VERFAHREN ZUR HERSTELLUNG VON GIESSEREIFORMEN UND -KERNEN UND DEREN VERWENDUNG ZUM LEICHTMETALLGUSS

IMPROVED POLYURETHANE BINDER COMPOSITIONS

Kernbindemittel

Improvements in or relating to moulding sand-synthetic resin compositions

A moulding sand containing a hydrophilic thermosetting urea or phenolic resinous binder is treated by adding thereto a halogenated hydrocarbon containing at least 5 carbon atoms. More particularly the moulding-sand composition comprises a major proportion of silica foundry sand, a hydrophilic thermosetting urea or phenolic resinous binder in amount sufficient when set by heat to bind the sand together, not more than 1 per cent by weight of a straight-chained monohalogenated paraffin containing 5 to 30 carbon atoms, a farinaceous binder and not more than 10 per cent by weight of water. Resins specified are urea- and phenol-formaldehyde resins preferably condensed to a stage just short of insolubility in water; cereal binders specified are corn flour and wheat flour, and these may be replaced for example by wood flour. Other optional additives are silica flour, ferric oxide and butonite. In examples the halogenated hydrocarbon is (1) lauryl bromide, (2,5) a kerosene solution of lauryl bromide ...

COMPOSITIONS FOR MAKING MOULDED REFRACTORY ARTICLES

... 1372221 Refractory mixtures PRECISION METALSMITHS Inc 2 Dec 1971 [2 Dec 1970 22 Feb 1971] 56011/71 Heading C1J [Also in Division C3] A refractory mixture consists of (a) a comminuted refractory material as the major component; (b) a sublimable binder which is a solid at 20‹ C., can be melted and resolidified, and has a vapour pressure of at least 0À1 mm. of Hg at its triple point and (c) at least 0À8% by wt. based on the total weight of the mixture, of a second binder which is a solid at 20‹ C., is miscible with the sublimable binder when the latter is in the liquid state, can be hardened to impart strength to articles formed from the mixture, has a vapour pressure lower than that of the sublimable binder so that the second binder will hold articles moulded from the mixture intact during sublimation of the sublimable binder, which second binder comprises from 4À5 to 100%, by wt. based on the weight of the second binder, of ethyl cellulose, the ethyl cellulose being present in an amount ...

Self-hardening compound for casting moulds and cores

A self-hardening compound for casting moulds and cores comprises a refractory filler and an acid, that acid being an organic acid with a dissociation constant of 10s to 10s at the following rate of the components in parts by weight: refractory filler 95-99% organic acid 1-5%.

Foundry sand compositions

... 1,029,057. Mould and core materials. FULLER'S EARTH UNION Ltd. Sept. 8, 1964 [June 24, 1963; Nov. 18, 1963], Nos. 25042/63 and 45445/63. Heading B3F. A self-hardening foundry mix comprises sand, 3-7% by weight of sand of an aqueous metal silicate solution having a solids content of between 25-55% and molar ratio SiO 2 : alkali metal oxide of 1À5-3À5 and up to 2% by weight of sand of glycerol triacetate or glycol diacetate or both, the mixing being conducted in the substantial absence of organic solvents. Up to 1À5% of dextrin or up to 0À5% of an emulsifier may be included. In a modification an amount, preferably below 10%, of a silicofluoride, e.g. sodium silicofluoride, is added. Many examples are given. The hardening may be assisted by blowing a gas such as CO 2 through the shaped mould or core.

MODIFIER FOR WAESSRIGE BASIC LOESUNGEN OF PHENOLIC RESOLHARZEN.

COLD-HARDENING PLASTIC MATERIAL BONDING AGENT AND ITS USE.

PROCEDURE FOR BINDING MIXTURES USING A POLYMERIZE-CASH BINDER.

LUBRICANT ADDITIVE AND PROCEDURE FOR THE PRODUCTION

BETA HYDROXYALKYLCARBAMYLMETHYLIERTE AMINOTRIAZINE AND THESE CONTAINING HAERTBARE COMPOSITIONS.

Procedure for the production of shell moulds and mask cores with pre-determined wall thickness

COMPOSITION WITH RE+USED SAND FROM PRODUCTION OF MOLDS AND GIESSKERNEN, THEIR MANUFACTURING PROCESSES, MANUFACTURING PROCESSES OF MOLDS AND GIESSKERNEN

Method of forming mold and core for metal casting

Method of forming mold and core for metal casting

POLYURETHANE BINDER COMPOSITIONS AND POLYISOCYANATE COMPOSITIONS USEFUL FOR POLYURETHANE BINDERS

FOUNDRY PROCESSES AND COMPOSITIONS

OF THE DISCLOSURE A foundry mould or core is made by forming a fluid mix of sand and a foamed aqueous phase containing binder and curing agent, pouring this into a mould or core box and allowing it to set. The foam is stable and does not break before setting starts. In one embodiment the total amount of water in the mix is 0.9 to 1.5% while in another embodiment a fluid mix of the sand and the binder is formed and the curing agent is then added to this.

BINDERS FOR FOUNDRY CORES AND MOULDS

ABSTRACT OF THE DISCLOSURE A binder for a foundry core or mould consists of an alkali metal salt of a polybasic organic acid or of a polymerised monobasic organic acid, for example sodium polyacrylate, an alkaline earth metal hydroxide such as calcium hydroxide, one or more polyvalent metal oxides, preferably magnesium oxide, and calcium citrate, together with water. The mixture may also include another polyvalent metal oxide, for example zinc oxide. The inclusion of calcium citrate in the binder composition, particularly in the presence of magnesium oxide, has been found to reduce the problem of 'softening back' in which the strength of the core or mould interior deteriorates over storage periods of a few days due to the continued absorption of carbon dioxide from the atmosphere in damp conditions.

PROCESS OF FORMING FOUNDRY CORES AND MOLDS UTILIZING BINDER CURABLE BY FREE RADICAL POLYMERIZATION

PROCESS OF FORMING FOUNDRY CORES AND MOLDS UTILIZING BINDER CURABLE BY FREE RADICAL POLYMERIZATION A binder is formed by polymerizing or hardening a binding material or composition, an unsaturated polymer or unsaturated monomer or mixtures thereof (polymer solution), wherein at least part of the unsaturation is ethylenic, preferably of vinyl or acrylic type, by free radical polymerization. The free radical polymerization is caused by contacting the unsaturated binding material with a free radical initiator comprising a peroxide and catalytic agent. In the preferred embodiment the binding material is a solution of an ethylenically unsaturated polymer in a solvent of unsaturated monomeric compound or compounds, in which vinyl or acrylic unsaturation is present. The binder is formed upon polymerization which occurs when the unsaturated monomer, polymer or polymer solution is exposed to the free radical initiator. Subjection of the unsaturated monomer, polymer or polymer solution to the initiator ...

VISCOSITY INDEX IMPROVER COMPOSITION

A composition suitable as a V.I. improver additive for lubricants comprising from 1 to 15% of a vinyl aromatic sequential block copolymer having an Mn in the range 25,000 to 125,000 and containing from 10 to 40% b.w. of the vinyl aromatic component, from 5 to 45% of a polybutene having an Mn in the range 5,000 to 60,000 and the remainder of the composition comprising a solvent neutral base oil, all percentages being by weight.

CERTAIN-SHAPED JOINT MATERIAL FOR HOT INSTALLATION

The objective of the present invention is to retain the hot sealing properties of a shaped joint material while suppressing igniting or smoke generation from the combustible material in the shaped joint material. The shaped joint material is obtained by adding a ratio of 26-50% by mass of an organic material additive into 100% by mass of a mixture including 50-90% by mass of a gibbsite aluminum hydroxide raw material, 1-9% by mass of clay, 9-23% by mass of graphite, and the balance mostly other refractory raw material, and kneading, shaping, and drying the result.

TWO-COMPONENT BINDER SYSTEM FOR THE POLYURETHANE COLD-BOX PROCESS

A description is given of a two-component binder system, in particular for use in the polyurethane cold-box process, a mixture for curing by contact with a tertiary amine, a method for producing a feeder, a foundry mould or a foundry core and feeders, foundry moulds and foundry cores that can be produced by this method, and the use of a two-component binder system according to the invention or a mixture according to the invention for binding a basic moulding compound or a mixture of basic moulding compounds, in particular in the polyurethane cold-box process.

A METHOD OF IMPROVING THE PROPERTIES OF RECLAIMED SAND USED FOR THE PRODUCTION OF FOUNDRY MOULDS AND CORES

Particulate refractory aggregate aggregate elutab1e alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered f rom spent foundry moulds and cores produced from alkalin e binders can be treated to reduce its elutable alkali content and then recycl ed for further foundry use.

Formmasse zur Herstellung schalenförmiger Formen für Giessereizwecke

Sand casting moulds and cores contg carbohydrate polymer - soln latex or clay binder

Moulds and cores for foundry use are produced by (i) mixing, in amts. such that mixture is sufficiently fluid to flow under gravity when stirred, sand with a soln. or dispersion of at least one binder capable of hardening by solvent removal (ii) pouring mixture in a mould frame contg. the mould pattern, or into a corebox; (iii) removing excess soln. or dispersion and drying the mixture to obtain mould or core. Pref. binder is organic, and pref. consists of (a) a carbohydrate, more pref. starch, flour, natural resins or a cellulose deriv., or pref. (b) a sol. synthetic polymer, partic. polyvinyl alcohol, polyacrylic acid, polyacrylamide or polyoxyethylene glycol, or pref. (c) a polymer latex, partic. a polybutadiene-styren latex; or pref. nd) a clay material. Pref. binder is used as an aqs. soln. in 0.1 - 5 wt.% concn., and pref. excess liquid is removed by filtration, or pref. decantation, or evaporation.

Verfahren zur Herstellung von Maskenformen und Maskenkernen mit vorbestimmter Wandstärke

Verfahren zur Herstellung von Sandformen

Sand mixture for producing moulds and cores

The sand mixture, the main constituents of which are sand and binder, contains an addition of esters and/or anhydrides. The amounts of the latter are 0.01 to 2.0 per cent by weight, relative to the amount of sand, and/or 3 to 50 per cent by weight, relative to the amount of binder. This addition reduces the water sensitivity of the binder to such an extend that water layers can be used for the moulds and cores.

Method for manufacturing a foundry mould or core

The object of this method is to provide a mixture having a better fluidity, so that it flows easily into the mould or the core and matches its shape more exactly. To foundry sand are added approximately 1.8 % of a hardenable formaldehyde resin in an aqueous solution, 0.2 % of an organosiloxane, and 1 % of a surfactant in aqueous solution, in order to obtain a mixture containing approximately 1.5 % of water. By mixing, the liquid phase of the mixture is made to foam, after which an acid hardener of the resin is added, the mixture is poured into a mould or core box, without tucking (settling) and the mixture is left to set. The hardener must be added after the other ingredients, otherwise the mixture is only half as fluid.

MOLDING MATERIAL FOR FOUNDRY CORES AND - FORMS.

Process for preparing an acid-hardening binder solution for foundry moulding materials

The acid-hardening binder solutions prepared according to the process have a content of 5-70 % by weight of polyester, based on diols and dicarboxylic acids, dissolved in silane-containing furfuryl alcohol. These diols and dicarboxylic acids or anhydrides are preferably derived from ethanediol, diethylene glycol, propanediol or dipropylene glycol and phthalic anhydride or maleic anhydride.

PROCEDURE FOR CONNECTING AT LEAST TWO MATERIALS.

METHOD FOR PRODUCING REFRACTORY COMPOSITE PARTICLES AND FEEDER ELEMENTS FOR CASTING INDUSTRY, CORRESPONDING FEEDER ELEMENTS AND THEIR APPLICATION

Matter conditioning intended for the foundry

Sand foundry

THREE-DIMENSIONAL PRINTED METAL-CASTING MOLDS AND METHODS FOR MAKING THE SAME

COMPOSITIONS OF FOUNDRY SANDS PROPERTIES

Aglutinante de furano sem cozimento, mistura para fundição, processo para preparar uma forma de fundição, forma para fundição e método para a preparar um fundido de metal

FOERFARANDE FOER SAMMANBINDNING AV TVAA MATERIAL UNDER ANVAENDNING AV ETT POLYMERISERBART BINDEMEDEL

MATERIAL FOR MOLD AND PROCESS OF FORMING MOLD BY USING THIS MATERIAL

PCT No. PCT/JP89/00859 Sec. 371 Date Apr. 12, 1990 Sec. 102(e) Date Apr. 12, 1990 PCT Filed Aug. 23, 1989 PCT Pub. No. WO90/02007 PCT Pub. Date Mar. 8, 1990.A material for a mold which comprises, as main components, a refractory aggregate and a hardenable binder comprising a polyfunctional acrylamide having at least two ethylenically unsaturated groups in the molecule, has an excellent low-temperature rapid hardenability, disintegrability, and pot life and is especially suitable as a material for a mold for casting a low-melting-point metal such as an aluminum alloy.

Method for forming molds and core for casting metal

The present inventions provide a method for forming molds and a core which generates no gases with bad effects on the human bodies while the binders are heated. In particular, the present inventions provide a method for forming molds and a core comprising an aggregate material mixture consisting of granular aggregate materials, wherein the aqueous binders and water are foamed with stirring, filled into a space for forming molds, and caked with an evaporating water component. In an embodiment, molds can be further cured by adding cross linking agents before and after they are taken out from the space for forming. Further, an aggregate material mixture for forming molds used for the method for forming molds of the present inventions is provided.

ПРИМЕНЕНИЕ АМИНОВЫХ СМЕСЕЙ ДЛЯ СТЕРЖНЕЙ, ФОРМОВАННЫХ ЛИТЬЕМ, И ЛИТЕЙНЫХ МЕТАЛЛОВ

FIELD: process engineering. ^ SUBSTANCE: invention relates to metallurgy. Sand mix with binder and filler is fed to casting pattern and brought in contact with hardening catalyst. Said mix is cured and hardened casting pattern is removed. Hardening catalyst is made up of mix of three basic nitriles. Each of the latter features differing hardening reactivity and/or smell intensity. ^ EFFECT: safe transfer and adjustment of hardening kinetic properties. ^ 16 cl, 2 tbl, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 432 222 (13) C2 (51) МПК B22C B22C 1/22 9/00 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009131704/02, 22.01.2008 (24) Дата начала отсчета срока действия патента: 22.01.2008 (43) Дата публикации заявки: 27.02.2011 Бюл. № 6 (73) Патентообладатель(и): АРКЕМА ФРАНС (FR) 2 4 3 2 2 2 2 (45) Опубликовано: 27.10.2011 Бюл. № 30 2 4 3 2 2 2 2 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 24.08.2009 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: US 5981622 A, 09.11.1999. SU 400401 A, 05.11.1974. SU 1256845 A1, 15.09.1986. SU 482477 A, 02.12.1975. US 20040051078 A1, 18.03.2004. EP 0854159 A1, 22.07.1998. EP 0177871 A2, 16.04.1986. (86) Заявка PCT: EP 2008/050722 (22.01.2008) (87) Публикация заявки РСТ: WO 2008/090161 (31.07.2008) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) ПРИМЕНЕНИЕ АМИНОВЫХ СМЕСЕЙ ДЛЯ СТЕРЖНЕЙ, ФОРМОВАННЫХ ЛИТЬЕМ, И ЛИТЕЙНЫХ МЕТАЛЛОВ (57) Реферат: Изобретение относится к литейному производству. Формовочную смесь со связующим и заполнителем подают на модель и приводят в контакт с катализатором отверждения, смесь отверждают и удаляют затвердевшую литейную форму. Катализатор отверждения представляет собой смесь двух третичных аминов, каждый из которых имеет реакционную способность затвердевания и/или ...

Органическое связующее для изготовления керамических трехмерных изделий по аддитивной технологии

Изобретение относится к органическим синтетическим материалам, в частности к связующим для применения в аддитивном производстве при изготовлении керамических трехмерных изделий посредством 3D-печати. Органическое связующее для изготовления керамических трехмерных изделий по аддитивной технологии содержит 99,40 - 99,81 мас.% этилового спирта с концентрацией 95%, 0,11 - 0,33 мас.% поливинилбутираля, 0,04 - 0,07 мас.% масла касторового, 0,02 - 0,035 мас.% канифоли и фенолформальдегидную смолу в смеси с дибутилфталатом в соотношении 1:1 - остальное. Обеспечивается возможность длительного хранения без риска полимеризации при одновременном сохранении прочностных свойств. 1 табл., 8 пр.

Bindemittelsystem für Formstoff-Mischungen zur Herstellung von Formen und Kernen

Beschrieben wird ein Zweikomponenten-Bindemittelsystem, das aus einer Phenolharz-Komponente und einer Polyisocyanat-Komponente besteht. Die Phenolharz-Komponente umfaßt ein Phenolharz mit mindestens zwei OH-Gruppen pro Molekül und die Polyisocyanat-Komponente umfaßt ein Polyisocyanat mit mindestens zwei Isocyanat-Gruppen pro Molekül. Zumindest die Phenolharz-Komponente enthält ein Lösungsmittel. Bei dem neuen Bindemittelsystem umfaßt das Lösungsmittel für das Phenolharz ein Alkylsilikat oder ein Gemisch mehrerer Alkylsilikate und/oder die Polyisocyanat-Komponente enthält ein Lösungsmittel, welches ein Alkylsilikat oder ein Gemisch mehrerer Alkylsilikate umfaßt. DOLLAR A Das bevorzugte Alkylsilikat ist dabei Tetraethylsilikat.

Profilverbindung

Die Erfindung betrifft eine Profilverbindung, umfassend einen ersten Profilstab (1) mit mindestens einer sich in Richtung der Längserstreckung des ersten Profilstabs (1) erstreckenden, hinterschnittenen ersten Profilnut (2) und eine in die erste Profilnut (2) verschraubte Gewindehülse (5, 9), aufweisend ein Außengewinde (6), eine sich parallel zu der ersten Profilnut (2) erstreckende Durchgangsöffnung (25) mit Innengewinde (24) sowie Antriebsmittel (7) zum Verdrehen der Gewindehülse (5, 9), wobei in der Gewindehülse (5, 9), eine ein Schraubengewinde (18) aufweisende Verbindungsschraube (17) aufgenommen ist. Erfindungsgemäß ist vorgesehen, dass die Antriebsmittel (7) sich bis zu beiden, voneinander abgewandten axialen Enden der Gewindehülse (5, 9), erstrecken, dass das Außengewinde (6) als spanabhebendes, selbstschneidendes Gewinde zur Ausbildung eines Gewindes in der ersten Profilnut (2) zum Halten der Gewindehülse (5, 9), ausgebildet ist.

BINDERS FOR FOUNDRY CORES AND MOULDS

FIREPROOF PREPARATION, FINISHED FOR HARDENING AND PREPARATION

VERFAHREN ZUR HERSTELLUNG EINER FORM ODER EINES KERNES FUER GIESSEREIZWECKE

VERFAHREN ZUR HERSTELLUNG VON GIESSEREIFORMEN UND -KERNEN

CHEMICALLY HAERTBARE RESINS FROM 1-OXA-3-AZA-TETRALIN GROUPS of CONTAINING CONNECTIONS AND CYCLO-ALIPHATIC EPOXY RESINS, PROCEDURES FOR THEIR PRODUCTION AND HAERTUNG AS WELL AS the USE of SUCH RESINS.

SAND MIXTURE FUR MANUFACTURING FORMS AND CORES AND PROCEDURE FOR THE AUSHARTEN OF THIS SAND MIXTURE

BINDER SYSTEM FOR PLASTIC MATERIAL MIXTURES FOR THE PRODUCTION OF FORMS AND CORES

SAND MIXTURE FUR MANUFACTURING FORMS AND CORES AND PROCEDURE FOR THE AUSHARTEN OF THIS SAND MIXTURE

PROCEDURE FOR THE EMPLOYMENT IN THE GIESSEREITECHNIK

Solventless polyurethane no-bake foundry binder

POLYOL CROSSLINKED BY HETEROCYCLIC COMPOUND

Furan no-bake foundry binders binders and their use

COLD SETTING BINDING AGENT FOR MOULD MATERIALS AND APPLICATION THEREOF

FORMING FOUNDRY CORES & MOLDS USING A BINDER CURABLE BY FREE RADICAL POLYMERIZATION

REFRACTORY CORES AND METHODS OF MAKING THE SAME

METHOD OF MANUFACTURING A FOUNDRY MOULD

TITLE A METHOD OF MANUFACTURING A FOUNDRY MOULD INVENTOR E.I. Szabo ABSTRACT A foundry mould is made by mixing a binder and and foundry sand in the range 15 to 150 grams of binder per kilogram of sand, the binder consisting of at least one acid selected from the group glycolic acid, lactic acid, .alpha.-hydroxy butyric acid, valerolactic acid, c-hydroxy-caproic acid, tartronic acid, tartaric acid, malic acid, mucic acid, citric acid, gluconic acid, and glyceric acid; calcium carbonate as a precipitant for the acid, the amount of calcium carbonate present in the binder components being equivalent to at least 50% of the stoichiometric requirement of the total acid content of the binder components and water in an amount no greater than 2 times the weight of the total acid content calculated on the acid content being in a water free state, and, while the binder components are reacting together and evolving CO2, shaping the mix in to a foundry mould and then shortening the setting time of the binder by continuously removing CO2, as it is being evolved, from the shaped mix. The CO2 may be removed by vacuum or a purging gas (air or nitrogen) or both from the shaped mix.

METHOD OF MANUFACTURING A BONDED PARTICULATE ARTICLE BY REACTING A POLYOL AND A HETEROCYCLIC COMPOUND

METHOD OF MANUFACTURING A BONDED PARTICLUATE ARTICLE BY REACTING A POLYOL AND A HETEROCYCLIC COMPOUND Disclosed herein is a method of manufacturing a bonded particulate article by admixing particulate material with a binder system, the binder system being formed by admixing a polyol selected from the group comprising a saccharide, a saccharide polymer, and a glyco protein with a heterocyclic compound of the formula wherein R1 and R2 are, independently, aryl of from 6 to 12 carbon atoms, alkyl of from 1 to 6 carbon atoms or substituted alkyl of from 1 to 6 carbon atoms wherein the substituting group is hydroxy, alkoxy of from 1 to 6 carbon atoms, hydroxyalkoxy of from 1 to 6 carbon atoms, cyano, carboxy, carbalkoxy of from 1 to 7 carbon atoms or carbamoyl, or when R1 is -CxH2x-, R2 is -CxH2xO-, x being from 1 to 6, X is oxygen, sulfur or imino and z is a divalent bridging radical, with a solvent, and an acid effective to control the rate of crosslinking between said polyol and said ...

FOUNDRY BINDER COMPOSITION

A foundry binder which contains certain fulvenes and/or prepolymers thereof, and an acid catalyst.

PROCESS FOR THE MANUFACTURE OF A FOUNDRY CORE OR MOULD

TWO-COMPONENT BINDING SYSTEM FOR PROCESS OF PUR-AND-THE COLD-AND-THE BOX

TWO-COMPONENT BINDING SYSTEM FOR PROCESS OF PUR-AND-THE COLD-AND-THE BOX

Dependent particulate matter for moulds and moulding cores

METHOD OF FORMING MOLD AND CORE FOR METAL CASTING

Sistema ligante de dois componentes e seu uso

METHOD OF FORMING MOLD AND CORE FOR METAL CASTING

Member for producing castings

A part for casting obtained by converting base paper for paper tubing into a tube and containing an organic fiber, an inorganic fiber, and a binder. The part is preferably obtained by winding the base paper into tubing. The part preferably contains 10 to 70 parts by weight of the organic fiber, 1 to 80 parts by weight of the inorganic fiber, 10 to 85 parts by weight of the binder. The organic fiber is preferably pulp fiber.

USE OF AMINE BLENDS FOR FOUNDRY SHAPED CORES AND CASTING METALS

The present invention relates to an improved process for preparing foundry shapes by the cold box process, a process for making cores and moulds and a process for casting metals, carrying out as curing catalyst system a blend comprising at least two tertiary amines. 1. A catalyst for curing a composite resin composition comprising a blend of at least two tertiary amines.2. Catalyst of claim 1 , wherein each amine is present in the blend in an amount of not less than 10% by weight claim 1 , and not more than 90% by weight.3. Catalyst of wherein the blend comprises at least one tertiary amine having 3 to 5 carbon atoms with at least one tertiary amine having 6 to 10 carbons.4. Catalyst of claim 1 , wherein the amines are chosen from trimethylamine claim 1 , N-methylaziridine claim 1 , dimethylethylamine (DMEA) claim 1 , N-methylazetidine claim 1 , N-ethylaziridine claim 1 , diethylmethylamine (DEMA) claim 1 , dimethylisopropylamine (DMIPA) claim 1 , dimethyl-n-propylamine (DMPA) claim 1 , N-n-propylaziridine claim 1 , N-iso-propylaziridine claim 1 , N-ethylazetidine claim 1 , N-methylpyrrolidine claim 1 , N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetramethyl diamino methane claim 1 , triethylamine (TEA) claim 1 , methylethyl-n-propylamine claim 1 , methylethyl-iso-propylamine claim 1 , dimethyl-n-butylamine claim 1 , dimethyl-sec-butylamine claim 1 , dimethyl-iso-butylamine claim 1 , dimethyl-tert-butylamine claim 1 , N-ethylpyrrolidine claim 1 , N-methylpiperidine claim 1 , hexamethylene tetramine claim 1 , dimethyl piperazine claim 1 , N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetramethyl diamino ethane claim 1 , dimethylpentylamines claim 1 , methylethylbutylamines claim 1 , diethylpropylamines claim 1 , dipropylmethylamines claim 1 , N-propylpyrrolidines claim 1 , N-ethylpiperidine claim 1 , dimethyl hexylamines claim 1 , methylethylpentylamines claim 1 , diethylbutylamines claim 1 , dipropylethylamines claim 1 , N-butylpyrrolidines claim 1 , N-propylpiperidines claim 1 , ...

PHOTOPOLYMERIZABLE COMPOSITION FOR ADDITIVE MANUFACTURING

Kernoel fuer Giessereizwecke

Gießkern für Gießformen sowie Verfahren zu dessen Herstellung

Die vorliegende Erfindung betrifft einen Gießkern für Gießformen, wobei der Gießkern eine Kernseele und einen um die Kernseele herum angeordneten Kernmantel umfasst. Der Kernmantel enthält mit einem Binder gebundene Keramik-Partikel oder besteht hieraus. Die Kernseele enthält mit einem Binder gebundene Keramik-Partikel sowie zusätzlich ein oder mehrere Platzhalterelement(e). Das/Die Platzhalterelement(e) ist/sind zumindest teilweise thermisch zersetzbar. Die vorliegende Erfindung betrifft zudem ein Verfahren zur Herstellung des erfindungsgemäßen Gießkerns sowie die Verwendung des erfindungsgemäßen Gießkerns.

KALTHAERTENDES FORMSTOFF-BINDEMITTEL UND DESSEN VERWENDUNG.

Binder comprises soln. of aldehyde-reactive phenolic material (I) and a gaseous acetal (II) as reaction partners and strong acid (III) as catalyst, (I) and (III) being present in the mould mixt. and (II) being passed into the shaped mould mixt. Claimed is prepn. of synthetic resin-bonded shaped articles, partic. foundry moulding parts, a mould mixt. being made from a mould base material, soln. of (I), and (III), and hardened by leading through it (II) by means of a carrier gas.

Crystal selector pattern

A pattern for forming a crystal selector in an investment casting mould, the pattern being formed from a water soluble organic composition. The water soluble organic composition may be a thermoplastic, which may comprise hydroxypropylcellulose and which may have a solubility of at least 900 g/l. The water soluble composition ideally comprises urea in a proportion of 70-90%, polyvinyl acetate in a proportion of 10-25% and 1 to 5% stearic acid. The crystal selector pattern may be formed in an injection moulding process.

IMPROVED BINDERS FOR FOUNDRY CORES AND MOULDS

Improvements relating to the bonding of sand for the making of cores and moulds

A core binder contains at least 5% of an acetylenic oil such as Boleko or Isano oil from the Ongokea nut, tariric acid oil from Picramnia Tariri or xymenynic acid from Ximenis Caffra, or oils containing acids of the stearolic series. Accelerators and/or driers may be added such as salts (e.g. naphthenates) of cobalt, manganese and lead or dithiocarbamates, zanthates or sulphides of thiourea, e.g. zinc diethyl dithiocarbamate. Sulphur or sulphur compounds or aniline may also be added. The ethelynic oils may be stand oils and may be processed by heating or blowing, isomerized p or vulcanized. The acetylenic oil is not heated prior to the core being baked. Other resins and oils, such as ethylenic oils may be added, and include linseed, tall, oiticica, colza, perilla or tung oil or rosin (and esters or salts thereof), petroleum pitches or resins, coal resin, or fish or animal oils. Solvents such as paraffin, white spirit, naphtha, xylene, toluene or shale oil may be added or water-containing ...

A METHOD OF IMPROVING THE PROPERTIES OF RECLAIMED SAND USED FOR THE PRODUCTION OF FOUNDRY MOULDS AND CORES

Improvements in or relating to foundry sand compositions and agglomerants therefor

An agglomerating composition, particularly for use with foundry sand in the manufacture of casting moulds, comprises an emulsion of linseed oil in a starchy product obtained by subjecting an amylaceous material to hydrolysis with oxalic acid so as to produce a mixture of soluble starch, dextrin and glucose, which mixture is concentrated under reduced pressure. The composition may also contain a resin. The amylaceous material specified comprises domestic starch, industrial starch or cereal flour. The casting mould compositions may then be prepared by mixing the above agglomerating compositions in small proportions with siliceous sand.ALSO:An agglomerating composition, particularly for use with foundry sand in the manufacture of casting moulds, comprises an emulsion of linseed oil in a starchy product obtained by subjecting an amylaceous material to hydrolysis with oxalic acid so as to produce a mixture of soluble starch, dextrin and glucose, which mixture is concentrated under reduced pressure ...

BONDING AGENT ON BASIS OF AQUEOUS ALKALI METAL SILICATE SOLUTIONS AND THEIR USE.

PROCEDURE FOR THE PRODUCTION OF A FORM OR A CORE FOR FOUNDRY PURPOSES

LUBRICANT ADDITIVE AND PROCEDURE FOR THE PRODUCTION

PROCEDURE FOR THE PRODUCTION OF A GIESSKERNS OR A MOLD.

FORMMASSE FUER GIESSEREIKERNE UND -FORMEN

SANDMISCHUNG FUR DAS HERSTELLEN VON FORMEN UND KERNEN UND VERFAHREN ZUM AUSHARTEN DIESER SANDMISCHUNG

MANUFACTURE OF FOUNDARY CORE OR MOULD

FOUNDRY MOULD MIX AND BINDER THEREFOR

BINDER FOR FOUNDRY CORES AND MOULDS

PREPARATION OF HIGH TEMPERATURE SHELL MOLDS

POLYMERIC RESINS DERIVED FROM 1-OXA-3-AZA-TETRALINE GROUP-CONTAINING COMPOUNDS AND CYCLOALIPHATIC EPOXIDES

Title: POLYMERIC RESINS DERIVED FROM 1-OXA-3-AZA- TETRALINE GROUP-CONTAINING COMPOUNDS AND CYCLOALIPHATIC EPOXIDES A composition comprising a polymeric resin derived from (A) at least one compound containing an average of more than one 1-oxa-3-aza-tetraline group per molecule with (B) at least one cycloaliphatic epoxide containing at least two epoxide groups, at least one of said epoxide groups being part of said ring, the mole ratio of (B) to (A) being in the range of about 0.2 to about 2. The polymeric resins so derived are characterized by particularly outstanding heat stabilities in combination with good mechanical properties.

COLD-SETTING MOULDING BINDERS AND THEIR USE

Cold-setting moulding binders and their use The binder serves to produce foundry moulds and comprises a solution (preferably an aqueous solution) of aldehyde reactive phenol substances and gaseous acetals (preferably dimethyl formal) as reaction partners and strong acids, e.g. sulphuric acid and/sulphonic acids as a catalyst. The acetal is in this system hydrolysed by the acid, the basic aldehyde being formed, which will react with the aldehyde reactive phenol substance accompanied by cross-linking. The acid serves thereby simultaneously as a cross-linking catalyst. In principle, it is possible to regard as "aldehyde reactive phenol substances" any phenolic compounds which can in the acid range cross-link more or less spontaneously with aldehydes. Preferably, these are resorcinol or resorcinol products, e.g. resorcinol pitch or precondensates formed with a shortfall of aldehyde, e.g. based on resorcinol formaldehyde, phenol resorcinol formaldehyde or resorcinol melamine formaldehyde. To ...

PHENOLIC RESIN-POLYISOCYANATE BINDER SYSTEMS CONTAINING AN ORGANOHALOPHOSPHATE AND USE THEREOF

PHENOLIC RESIN-POLYISCYANATE BINDER SYSTEMS CONTAINING A ORGANOHALOPHOSOHATE AND USE THEREOF A binder containing a phenolic resin, a polyisocyanate, and an organohalophosphate and use thereof.

Anti-Veining Additive for Silica Sand Mold

This invention relates generally to a composition for silica sand cores and molds suitable for in the casting of metals. The sand core composition contains a hinder and a uniformly dispersed anti-veining additive. The mixed metal oxides collapse into a visco-plastic state when the foundry mold/core is heated by the molten metal during casting. A change in state of the MMOx from solid to a visco-plastic at the casting high temperatures provides space and lubricity within the foundry shape sufficient to compensate for the thermally-induced physical expansion of the silica grains. Thereby avoiding the mechanical forces which cause cracks and fissures in the mold or core that produce veins and other surface imperfections associated with the high coefficient of thermal expansion of silica sand. 1. A bonded silica sand mold for use in manufacturing metal castings , the metal castings produced with said bonded silica sand mold are substantially free of surface veins , said mold comprising:an additive of mixed metal oxides.2. A bonded silica sand mold as claimed in claim 1 , wherein said additive mixed metal oxides comprise less than 6.0% by weight of said bonded silica sand mold.3. A bonded silica sand mold as claimed in claim 1 , wherein said additive of mixed metal oxides comprises at least five metals selected from the group consisting of Na claim 1 , Al claim 1 , Si claim 1 , Ca claim 1 , Mg claim 1 , K claim 1 , Fe.4. A bonded silica sand mold as claimed in claim 1 , wherein said additive of mixed metal oxides comprises of at least 40% by weight of Silicon.5. A bonded silica sand mold as claimed in claim 3 , wherein said additive of mixed metal oxides comprises of at least 40% by weight of Silicon.6. A bonded silica sand mold as claimed in claim 1 , wherein said additive of mixed metal oxides combined have a softening temperature of above at least 1 claim 1 ,000° F. (540° C.).8. A bonded silica sand mold as claimed in claim 1 , wherein said mold further comprising:an ...

BINDER SYSTEM FOR REDUCED METAL MOLD REACTION

A binder system for refractory materials used in sand casting processes, especially two-part polyurethane-based binder systems used in the cold box or no bake process, has less metal-mold reaction when a separate third part is used. The third part is an alkyl silicate, such as tetraethyl orthosilicate (“TEOS”), an alkyl orthoformate, such as trimethyl orthoformate (TMOF) or triethyl orthoformate (TEOF), or combinations thereof. 1. A method for reducing metal-mold reaction in a metal casting process , comprising the steps of:providing an organic binder system and a refractory molding material, the organic binder system provided as three components that are not combined until the time of use, the third component comprising at least one of: an alkyl silicate and an alkyl orthoformate;mixing at least the first two components of the organic binder system with the refractory molding material to provide a shapeable foundry mix;forming the shapeable foundry mix into a mold or core; andcuring the mold or core formed.2. The method of claim 1 , wherein all three components of the organic binder system are combined prior to being mixed with the refractory molding material.3. The method of claim 1 , wherein only the first and second components of the organic binder system are combined prior to being mixed with the refractory molding material.4. The method of claim 3 , wherein the third component of the organic binder system is applied to the formed mold or core.5. The method of claim 4 , wherein the third component is applied by spraying the third component only onto surfaces of the mold or core that will be exposed to molten metal during the metal casting process.6. The method of claim 1 , wherein:the first component is a polyol component, comprising a phenolic base resin with at least 2 hydroxy groups per molecule, the polyol component being devoid of polyisocyanates; andthe second component is a polyisocyanate component, comprising a polyisocyanate compound with at least 2 ...

STABILIZER FOR GREEN SAND MOLD

A stabilizer for green sand mold includes a binding agent and an additive. Therein, the binding agent is a derivative of phenol, bonding with a variety of functional groups substituting hydrogen atoms, and present in an amount of 75 wt % to 85 wt % of the stabilizer. The additive contains a variety of trace elements. The binding agent and the additive are added in a weight ratio of 4:1, thereby improving the physical properties of the green sand mold and thus acquiring a reference for sand blending, molding and defects analyzing of castings. 1. A stabilizer for green sand molda binding agent, which is a derivative of phenol, bonding with a variety of functional groups substituting hydrogen atoms, and present in an amount of 75 wt % to 85 wt % of the stabilizer; andan additive, comprising a plurality of trace elements;wherein the binding agent and the additive are present in a weight ratio of 4:1.2. The stabilizer of claim 1 , wherein the trace elements comprises sulfur (S) claim 1 , magnesium (Mg) claim 1 , sodium (Na) claim 1 , and calcium (Ca).3. The stabilizer of claim 1 , wherein the functional groups comprises ketone group claim 1 , aldehyde group claim 1 , alicyclic group claim 1 , primary alcohol group claim 1 , secondary alcohol group claim 1 , and alkenyl group.4. The stabilizer of claim 1 , wherein the binding agent is present in an amount of 81 wt % of the stabilizer.5. The stabilizer of claim 1 , wherein the additive is present in an amount of 19 wt % of the stabilizer.6. The stabilizer of claim 1 , wherein the binding agent and the additive are mixed and present as a solute of brown powder.7. The stabilizer of claim 6 , wherein the solute has a volume density ranging from 25 g/cmto 30 g/cm.8. The stabilizer of claim 6 , wherein the solute has a pH value ranging from 5 to 6.9. The stabilizer of claim 6 , wherein the solute has a solubility of 92% in cold water 1. Field of the InventionThe present invention relates to stabilizers, and particularly to a ...

CASTING GREEN SAND MOLD FOR FORMING CAST STEEL ARTICLE AND ITS PRODUCTION METHOD, AND METHOD FOR PRODUCING CAST STEEL ARTICLE USING SUCH GREEN SAND MOLD

A green sand mold for producing a cast steel article, which is formed by casting sand comprising sand, a binder, and 3 parts or less by mass of a carbonaceous component per 100 parts by mass of sand, and provided with a coating layer of a thermosetting resin formed at least on a recess including a cavity for forming the cast steel article, the coating layer having average hardness (measured by a self-hardening hardness meter) of 50-95 and a thickness of 0.5-2.5 mm. 1. A green sand mold for producing a cast steel article , which is formed by casting sand comprising sand , a binder , and 3 parts or less by mass of a carbonaceous component per 100 parts by mass of sand;at least a recess including a cavity for forming said cast steel article being provided with a coating layer of a thermosetting resin; andsaid coating layer having average hardness (measured by a self-hardening hardness meter) of 50-95 and a thickness of 0.5-2.5 mm.2. The green sand mold according to claim 1 , wherein the amount of the thermosetting resin forming said coating layer is 100-500 g/mon a solid basis.3. The green sand mold according to claim 1 , wherein the amount of carbon remaining in a unit volume of said coating layer is 20-200 mg/cmafter heated to 800° C. at a speed of 10° C./minute in the air.4. A method for producing the green sand mold recited in claim 1 , comprisingforming casting sand comprising sand, a binder, and 3 parts or less by mass of a carbonaceous component per 100 parts by mass of sand, into at least a pair of green sand mold parts comprising a recess including a cavity for forming said cast steel article;coating at least said recess with a coating solution comprising a thermosetting resin and an organic solvent; andthermally curing said thermosetting resin coated on said recess to form a coating layer having average hardness (measured by a self-hardening hardness meter) of 50-95.5. The method for producing a green sand mold according to claim 4 , wherein said ...

CASTING CORE FOR CASTING MOULDS, AND METHOD FOR THE PRODUCTION THEREOF

The present invention relates to a casting core for casting moulds, the casting core comprising an inner core and an outer core arranged around the inner core. The outer core contains or consists of ceramic particles bound with a binder. The inner core contains ceramic particles bound with a binder and additionally one or more placeholder elements. The placeholder element(s) is/are at least partially thermally decomposable. The present invention also relates to a method for producing the casting core according to the invention and to the use of the casting core according to the invention. 2. The casting core according to claim 1 , wherein at least one of the ceramic particles of the core or the ceramic particles of the core heart are at least one of: quartz sand particles claim 1 , zirconium sand particles claim 1 , aluminosilicate particles claim 1 , mullite particles claim 1 , inorganic hollow balls claim 1 , aluminum oxide particles claim 1 , or a mixture thereof.3. The casting core according to claim 1 , wherein at least one of the ceramic particles of the core sheath or the ceramic particles of the core heart have an average particle diameter of between 0.5 μm and 500 μm inclusive.4. The casting core according to claim 1 , wherein at least one of the binder of the core sheath or the binder of the core heart are at least one of: an inorganic binder or a phosphate binder claim 1 , plaster claim 1 , cement claim 1 , an organic binder or a mixture thereof.5. The casting core according to claim 1 , wherein the placeholder element is at least partially thermally decomposable from a temperature in a range between 300° C. and 1 claim 1 ,500° C. inclusive.6. The casting core according to claim 1 , wherein the placeholder element is combustible.7. The casting core according to claim 1 , wherein the placeholder element is at least one of: a wood foam element claim 1 , a polymer foam element claim 1 , polystyrene balls claim 1 , polymer granulates claim 1 , or mixtures ...

FOUNDRY MIX INCLUDING RESORCINOL

A foundry mix includes a major amount of a foundry aggregate and an effective binding amount of a binder system. The binder system cures in the presence of sulfur dioxide and a free radical initiator. The binder system may include (1) 10 to 70 parts by weight of an epoxy novolac resin; (2) 0.5 to 10 parts by weight of resorcinol; (3) 20 to 70 parts by weight of a monomeric or polymeric acrylate; and (4) an effective amount of a free radical initiator. Notably, (1), (2), (3) and (4) are separate components or mixed with another of said components, provided (4) is not mixed with (3), where said parts by weight are based upon 100 parts of the binder system. 1. A foundry binder system including:an aggregate;a first portion (Part One), wherein Part One includes an epoxy resin in a range from 25 to 70 parts by weight, and cumene hydroperoxide in a range from 10 to 40 parts by weight;a second portion (Part Two), wherein Part Two includes an epoxy novolac resin in a range from 10 to 40 parts by weight, polyhydroxy benzene in a range from 0.5 to 10 parts by weight, an acrylate in a range from 20 to 70 parts by weight; andwherein the aggregate, Part One, and Part Two are mixed together and exposed to sulfur dioxide to cure the aggregate into a foundry mold.2. The foundry binder system of claim 1 , wherein the polyhydroxy benzene is one of a resorcinol claim 1 , a non-functionalized resorcinol compound claim 1 , and a functionalized resorcinol compound.3. The foundry binder system of claim 2 , wherein the epoxy resin in Part One includes at least 65 parts by weight of bisphenol F and less than 5 parts by weight of bisphenol A.4. The foundry binder system of claim 3 , wherein the epoxy resin in Part One has about 1 parts by weight of bisphenol A and about 69 parts by weight bisphenol F.5. The foundry binder system of claim 2 , wherein Part Two further includes dibasic ester in a range from 2 to 10 parts by weight.6. The foundry binder system of claim 2 , wherein Part Two ...

FOUNDRY MIX INCLUDING RESORCINOL

A foundry mix includes a major amount of a foundry aggregate and an effective binding amount of a binder system. The binder system cures in the presence of sulfur dioxide and a free radical initiator. The binder system may include (1) 10 to 70 parts by weight of an epoxy novolac resin; (2) 0.5 to 10 parts by weight of resorcinol; (3) 20 to 70 parts by weight of a monomeric or polymeric acrylate; and (4) an effective amount of a free radical initiator. Notably, (1), (2), (3) and (4) are separate components or mixed with another of said components, provided (4) is not mixed with (3), where said parts by weight are based upon 100 parts of the binder system. 1. A method of casting a metal article comprising: wherein the foundry mix includes:', 'a first portion (Part One), wherein Part One includes an epoxy resin in a range from 25 to 70 parts by weight and a free radical initiator;', 'a second portion (Part Two), wherein Part Two includes an epoxy novolac resin in a range from 10 to 40 parts by weight, a polyhydroxy benezene in a range from 0.5 to 10 parts by weight, an acrylate in a range from 20 to 70 parts by weight and a diabasic ester in a range of 2 to 10 parts by weight;, 'fabricating a foundry shape by introducing a foundry mix into a pattern to form the foundry shape;'}provided Part One is not mixed with Part Two prior to or simultaneous to fabricating the foundry shape the foundry mix, and where said parts by weight are based upon 100 parts of the foundry mix;curing the shape with gaseous sulfur dioxide;pouring metal while in a liquid state into the foundry shape;allowing the metal to cool and solidify; andseparating the fabricated shape from the pattern.2. The method of claim 1 , wherein the amount of free radical initiator is between 10-40 parts by weight.3. The method of claim 2 , wherein the free radical initiator is cumene hydroperoxide.4. The method of claim 1 , wherein the epoxy resin of Part One is a Bisphenol F epoxy resin.5. The method of claim 4 , ...

Use of amine blends for foundry shaped cores and casting metals

Provided is a catalyst suitable for curing a composite resin composition that includes comprising a blend of at least two tertiary amines selected from dimethylethylamine (DMEA), diethylmethylamine (DEMA), dimethylisopropylamine (DMIPA), and dimethyl-n-propylamine (DMPA), where each of the at least two tertiary amines is present in the blend in an amount of not less than 10% by weight and not more than 90% by weight.

CASTING SLURRY

A casting slurry for the manufacture of shell molds, including powder particles and a binder, further including a surfactant. Use of such a casting slurry for the manufacture of a shell mold. 1. A casting slurry for manufacturing shell molds , comprising powder particles , a binder and a hiding power stabilizing surfactant , the mass content of said surfactant in the slurry being less than 0.1%.2. The casting slurry as claimed in claim 1 , wherein the surfactant has a carbon chain comprising at most four thousand eight hundred carbon atoms.3. The casting slurry as claimed in claim 1 , wherein the surfactant leaves the pH of the slurry unchanged to within 5%.4. The casting slurry as claimed in claim 1 , wherein the surfactant is Tiron CHNaOS.5. The casting slurry as claimed in claim 1 , wherein the surfactant is sodium polyacrylate.6. The casting slurry as claimed in claim 1 , wherein the binder is selected from: ethyl silicate claim 1 , sodium silicate or colloids.7. The casting slurry as claimed in claim 1 , wherein the mass content of the surfactant in the slurry is less than or equal to 0.05%.8. The casting slurry as claimed in claim 1 , the slurry being a contact slurry configured to come in contact with a part pattern.9. The casting slurry as claimed in claim 1 , wherein the powder particles comprise at least one of alumina claim 1 , mullite claim 1 , zirconia claim 1 , mullite-zirconia composites.10. A method of manufacturing a shell mold claim 1 , comprising using a casting slurry as claimed in .11. The casting slurry as claimed in claim 6 , wherein the colloids include colloidal silica claim 6 , colloidal alumina claim 6 , colloidal yttria or colloidal zirconia. The present disclosure relates to the field of the casting, in particular the lost-wax casting processes, and more particularly the slurries used in such processes, especially for the manufacture of casting shell molds.Casting processes known as lost-wax or lost-pattern casting have been known, in ...

METHOD OF PRODUCING MOLDS AND CORES SUITABLE FOR PRODUCING FIBER COMPOSITE BODIES OR CAST PARTS IN METAL OR PLASTIC, MOLD BASE MATERIAL AND BINDER USED IN THE METHOD AND MOLDS AND CORES PRODUCED ACCORDING TO THE METHOD

A method of manufacturing molds and cores suitable for producing fiber composite bodies or cast parts of metal or plastic from a mold base material and a multicomponent binder by 3D printing includes pretreating the particulate mold base material with at least one silicon-organic compound having a polar hydrophilic end and a nonpolar hydrophobic end, forming a layer of the pretreated particulate mold base material, and applying the binder or at least one component of the binder in liquid form to the layer, wherein b. and c. are repeated. 113-. (canceled)15. The method as claimed in claim 14 , further comprising at least one of:the mold base material comprises a particulate material to whose surface the hydrophilic end of the silicon-organic compound is able to attach.the mold base material comprises at least one water-insoluble, inorganic material,the at least one water-insoluble inorganic material is selected from the group consisting of sand, glass, oxidic, ceramic and glass-ceramic materials, and mixtures thereof,the mold base material comprises at least one water-soluble, inorganic material,the at least one water-soluble inorganic material is a water-soluble salt,the mold base material comprises at least one water-soluble, organic material,the at least one water-soluble organic material is a water-soluble polymer or a salt of an organic acid, or a mixture thereof,the particulate mold base material has a mean particle diameter (d50) of 10 μm to 800 μm, and{'sup': 2', '2, 'the particulate mold base material has a surface area as determined to DIN-ISO 9277 of 50 cm/g to 500 cm/g.'}17. The method as claimed in claim 14 , further comprising:for the pretreatment, the silicon-organic compound is added to the particulate mold base material in the pretreatment in an amount such that it is present in the pretreated mold base material in a weight fraction of at least 0.01 wt % and of at most 0.2 wt % based on the dry weight of the pretreated mold base material.18. The ...

Proceso para obtener una arcilla industrial

La invención se refiere a un proceso para obtener arcillas con características mejoradas que comprende incorporar una matriz inorgánica a una matriz orgánica, en proporciones determinadas. La arcilla industrial obtenida es maleable y con alta resistencia a la compresión y deformación, con gran utilidad en el sector industrial en la elaboración de prototipos.

Silica-metal oxide co-gels

1356248 Silica-metal oxide cogels; metal silicate gels ZIRCONAL PROCESSES Ltd 21 Oct 1971 [5 Nov 1970] 52694/70 Headings C1A and C1J An acid hydrolysate of an organic silicate is prepared by hydrolysing the organic silicate with an acidic aqueous solution of a soluble salt (e.g. chloride) of the alkaline earth metals, zinc, aluminium, zirconium or chromium, no metallic compounds being precipitated during hydrolysis. The hydrolysate may be gelled by the action of an alkaline medium or by leaving to stand (Examples 3 and 6). The gel may be a silicametal oxide cogel or a metal silicate gel. The silicates may be C 1 -C 6 alkyl orthosilicates, polysilicates or ethyl silicate (a mixture of ethyl orthosilicate and ethyl polysilicate). The gelling may be carried out by the action of aqueous ammonia (Example 1), an aqueous suspension of alkaline earth metal oxide, e.g. MgO (Example 2) an aqueous solution of ammonium acetate (Examples 6, 7, 8 and 9) or the same solution containing NH 3 (Examples 4 and 5). The aqueous solvent may contain a water miscible monohydric alcohol and a strong non-oxidizing acid. In Example I MgCl 2 (10 g) was dissolved in N-hydrochloric acid (40 ml.) then ethyl alcohol (220 ml.) and ethyl silicate (160 ml.) were added. The mixture was gelled by aqueous ammonia. In Example IX hydrated magnesium acetate is used for preparing the mixed silica and magnesia gel. Examples II, III, IV, V, VI and VII illustrate the preparation of gels formed from silica and alumina, silica and zirconia, silica and calcium oxide, silica and chromium oxide, silica and zinc oxide using the respective metal chlorides (oxychloride in the case of zirconium). Refractory compositions, wherein the silica gel is used as a binder may be made from aluminium oxide or silicate, zirconium oxide, zircon, crystalline silicon oxide, silicon carbide, spinel, magnesite, or chrome magnesite. Examples I and VIII exemplify the preparation of sillimanite compositions, Examples VI an alumina ...

有機鋳物砂の硬化時間の遅延方法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method for preparing casting mold with high strength using ternary inorganic binder

본 발명은 삼성분계 무기 바인더를 이용한 고강도 주조 주형의 제조방법에 관한 것으로, 더욱 상세하게는 실리카 전구체, 산화알루미늄 전구체 및 산화소듐 전구체를 이용하여 융점을 낮춤으로써 유리화 효율이 상승되어 고강도의 주형을 제조할 수 있고 냉각 시 용융 금속과의 반응을 억제할 수 있는 결정상을 형성하여 열처리와 주조가 용이한, 삼성분계 무기 바인더를 이용한 고강도 주조 주형의 제조방법에 관한 것이다. 본 발명의 제조방법은 실리카 전구체, 산화알루미늄 전구체 및 산화소듐 전구체의 삼성분계 무기 바인더 전구체를 이용함으로써 융점을 낮추어 유리화 효율을 높였고 이에 따라 강도가 현저히 증가된 주조 주형을 제조할 수 있다. 또한 상기의 삼성분계 무기 바인더 조성은 용융 금속과의 반응을 억제할 수 있는 결정상을 형성시켜서 열처리 및 주조가 용이한 주조 주형을 제조할 수 있다. The present invention relates to a method of manufacturing a high strength casting mold using a ternary inorganic binder, and more particularly, to a method for manufacturing a high strength casting mold using a tin oxide inorganic binder, The present invention relates to a method for manufacturing a high strength casting mold using a ternary inorganic binder which is easy to be heat treated and cast by forming a crystalline phase capable of suppressing the reaction with molten metal during cooling. The manufacturing method of the present invention improves the vitrification efficiency by lowering the melting point by using the silica precursor, the aluminum oxide precursor, and the tin oxide inorganic precursor of the tin oxide precursor, so that the casting mold having a remarkably increased strength can be manufactured. In addition, the ternary inorganic binder composition can form a crystal phase capable of inhibiting the reaction with the molten metal to produce a casting mold which can be easily heat-treated and cast.

Mixed gels composed of silicon dioxide and metal oxides and methods of making them

Foam-concrete mixture

1436522 Cementitious compositions BAYER AG 1 March 1974 [2 March 1973] 9320/74 Heading C1H [Also in Division C3] Foam concrete is produced from a mixture comprising 10-80% by weight of aqueous alkali metal or ammonium silicate solution, 10-80% of organic polyisocyanate and 10-80% of a water-binding substance such as Portland cement, lime, blast furnace cement, pozzolana cement, gypsum, synthetic anhydrite, or quick setting cement. Extensive lists are given of suitable polyisocyanates, surfactants, foam stabilizers, set retarders, volatile liquids or metals as blowing agents, organic and inorganic phosphates as flame retardants. In examples the polyisocyanates used are sulphonated polyphenyl - polymethylene - polyisocyanate and a residue from the distillation of tolylene diisocyanate; triethylamine and N,N,N-(#-dimethylamino-n-propyl) hexahydrotriazine can be used as catalysts; other components included in the compositions listed in the examples are trichloromethane as blowing agent, sodium salt of sulphochlorinated C 10-14 paraffin mixture as emulsifier, perchlorinated paraffin, potassium sulphate, glass fibres, tris-(chloro-ethyl)phosphate and aqueous sodium silicate.

Three-dimensional printed metal-casting molds and methods for making the same

揭示了通过三维打印过程来制造金属铸造模具和其构件的方法，其中未经处理的砂用作构建材料并且聚合物用作打印到构建材料上的粘结剂的组分。

profile connection

Profilverbindung, umfassend einen ersten Profilstab (1) mit mindestens einer sich in Richtung der Längserstreckung des ersten Profilstabs (1) erstreckenden, hinterschnittenen ersten Profilnut (2) und eine in die erste Profilnut (2) verschraubte Gewindehülse (5, 9), aufweisend ein Außengewinde (6), eine sich parallel zu der ersten Profilnut (2) erstreckende Durchgangsöffnung (25) mit Innengewinde (24) sowie Antriebsmittel (7) zum Verdrehen der Gewindehülse (5, 9), wobei in der Gewindehülse (5, 9) eine ein Schraubengewinde (18) aufweisende Verbindungsschraube (17) aufgenommen ist, dadurch gekennzeichnet, dass die Antriebsmittel (7) sich bis zu beiden, voneinander abgewandten axialen Enden der Gewindehülse (5, 9) erstrecken, dass das Außengewinde (6) als spanabhebendes, selbstschneidendes Gewinde zur Ausbildung eines Gewindes in der ersten Profilnut (2) zum Halten der Gewindehülse (5, 9) ausgebildet ist. Profile connection, comprising a first profiled bar (1) with at least one in the direction of the longitudinal extent of the first profiled bar (1) extending, undercut first profiled groove (2) and in the first profiled groove (2) screwed threaded sleeve (5, 9), comprising a External thread (6), a parallel to the first profile groove (2) extending through hole (25) with internal thread (24) and drive means (7) for rotating the threaded sleeve (5, 9), wherein in the threaded sleeve (5, 9) a a screw thread (18) having connecting screw (17) is added, characterized in that the drive means (7) extend to both, opposite axial ends of the threaded sleeve (5, 9) that the external thread (6) as a cutting, self-tapping Thread for forming a thread in the first profile groove (2) for holding the threaded sleeve (5, 9) is formed.

Modified benzylic ether resole resins and process for their preparation

내용 없음 No content

Hot-core box precoated sand casting technology of motor end cover

本发明公开了一种电机端盖热芯盒覆膜砂铸造工艺。该工艺包括：将模具安装在射芯机上，安装到位；将覆膜砂装入射芯机热芯盒内，制作覆膜砂砂芯，控制砂芯温度，其中覆膜砂的原砂由石英砂和铬铁矿砂混合而成；将制好的砂芯取出，热芯盒砂芯组装成型并用压铁压好，然后进行浇铸，浇铸温度控制在1300℃‑1500℃；自然冷却，冷却时间为1‑2小时，分模取出铸件。本发明的工艺衔接有序，从芯砂制作方面着手，通过改进覆膜砂的组成，可以降低砂芯因容易变形、缩孔、开裂引起的不良，同时本发明配制的芯砂在两周内使用强度都满足要求，延长了芯砂的使用周期，提高了铸件的强度；有本发明铸造得到的电机端盖，壁厚及强度完全达到使用要求。

Method for producing a casting molds and cores suitable for the manufacture of fiber composite materials or molded parts made of metal or polymer material, molding material and binder used in the method as well as molds and cores made by this method

FIELD: foundry. SUBSTANCE: invention relates to the field of foundry. A method for the manufacture of casting molds and cores suitable for the manufacture of products from fibrous composite materials or cast parts from metal or polymer material by means of 3D printing includes forming a layer of pre-treated granular molding material, applying a binder or at least one component to this layer a binder in liquid form; and multiple repetition of the steps of forming a layer of granular molding material and applying a binder thereon. The particulate molding material is pretreated with at least one organosilicon compound that contains a polar hydrophilic end and a non-polar hydrophobic end. EFFECT: dimensional accuracy of the manufactured forms and cores is ensured by eliminating the migration of the binder during their manufacture. 13 cl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 762 467 C1 (51) МПК B22C 1/02 (2006.01) B22C 9/00 (2006.01) B33Y 70/10 (2020.01) B33Y 40/10 (2020.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B22C 1/02 (2021.05); B22C 9/00 (2021.05); B33Y 70/10 (2021.05); B33Y 40/10 (2021.05) (21)(22) Заявка: 2020126251, 07.01.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): РАЙНЗИХТ ГМБХ (DE) Дата регистрации: 21.12.2021 Приоритет(ы): (30) Конвенционный приоритет: 15.01.2018 DE 10 2018 200 607.5 (45) Опубликовано: 21.12.2021 Бюл. № 36 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.08.2020 (86) Заявка PCT: 2 7 6 2 4 6 7 R U (87) Публикация заявки PCT: WO 2019/137871 (18.07.2019) C 1 C 1 EP 2019/050233 (07.01.2019) 2 7 6 2 4 6 7 (56) Список документов, цитированных в отчете о поиске: US 20050276976 A1, 15.12.2005. EP 1594679 A2, 16.11.2005. DE 102007063552 A1, 25.06.2009. SU 835596 A1, 07.06.1981. SU 1172146 A1, 30.11.1987. RU 2214314 C1, 20.10.2003. R U 07.01.2019 (72) Автор(ы): ГЕРЦОГ, Ифо (DE) Адрес для переписки: 197101, Санкт-Петербург, а/я 128, ...

Alkaline benzylic ether phenolic resin binders

Modified benzylic ether resole resins and process for their preparation. The resins are prepared by treating a phenol with a molar excess of aldehyde in the presence of a divalent metal ion catalyst at a pH below 7 followed by further reaction at a pH above 8 in the presence of an alkaline catalyst. Alkaline solutions of the resins are used as foundry binders in an ester cure process.

Mold making method

A Mold and A Mold Manufacturing Method

본 발명은 주형 및 주형 제조 방법에 관한 것으로, 본 발명에 의한 주형 제조 방법은, 규산염 또는 폴리실록산 화합물 중 어느 하나 이상을 전구체로 하는 제 1단계와, 알콜용제를 이용하여 상기 전구체를 금속 알콕사이드 화합물과 혼합하는 제 2단계와, 상기 혼합물을 모재에 침지하는 제 3단계; 그리고, 건조시키는 제 4단계를 포함하여 구성되는 것을 특징으로 할 수 있다. The present invention relates to a mold and a method for producing a mold, the method for producing a mold according to the present invention, the first step using any one or more of a silicate or polysiloxane compound as a precursor, and using the alcohol solvent to the precursor with a metal alkoxide compound A second step of mixing and a third step of immersing the mixture in a base material; And, it may be characterized by comprising a fourth step of drying. 주형, 규산염, 폴리실록산 Template, silicate, polysiloxane

Phenolic resin binder for shell mold

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Beta-hydroxyalkylcarbamyl-methylated aminotrizines and curable compositions containing the same

Novel beta-hydroxyalkylcarbamylmethyl aminotriazines function in self-condensation and as crosslinkers for amino resins and also compounds containing active hydrogen groups. The compositions cure to coatings with excellent properties, and they can be used as binders for fillers such as insulating glass and foundry sand.

Process for making molds

본 발명은, 예컨대 주조용 코어를 이용하여 용탕을 주탕할 때에, 바인더가 분해되더라도 유독가스를 발생하지 않으며, 또한 주조후의 붕괴특성도 우수한 주형을 조형하는 방법을 개시한다. 이러한 방법에서는, 먼저 입자형상 골재, 1종류 또는 복수 종료의 수용성 바인더, 계면활성제, 가교제 및 물을 혼합하면서 교반하여 발포시킴으로써, 발포성 골재혼합물을 조정한다. 이어서, 상기 발포성 골재혼합물을 주형조형용 공간에 충전한다. 충전된 발포성 골재혼합물중의 수분을 증발시킴으로써 발포성 골재혼합물을 고화시켜 주형을 조형한다. 조형된 주형을 주형조형용 공간으로부터 취출한다. The present invention discloses a method of molding a mold which, for example, when pouring a molten metal by using a casting core, does not generate toxic gas even when the binder is decomposed, and also has excellent collapse characteristics after casting. In such a method, a foamable aggregate mixture is adjusted by first mixing a particulate aggregate, one or more types of water-soluble binders, a surfactant, a crosslinking agent, and water while mixing with foaming. Subsequently, the foam aggregate mixture is filled into a space for molding. The effervescent aggregate mixture is solidified by evaporating the moisture in the filled expandable aggregate mixture to mold the mold. The molded mold is taken out from the mold molding space.

Production technology for casting lost foam

一种铸造消失模的生产工艺，涉及消失模生产技术领域，其特征在于：依次包括以下步骤，EPS珠粒、预发泡、制模、熟化存放、组装粘合、上涂料和烘干,所述的组装粘合时的粘合剂由以下重量份组分制成，聚醋酸乙烯乳液40～60份、骨胶5～8份、石蜡10～20份、马来酸酐3～5份和二甲基乙醇胺2～6份。本发明消失模在工件铸造时，粘结剂的粘结性高，污染小，沸点低，无残渣，涂料粘结性高，污染小，无残渣，透气性好。<!-- 2 -->

Modifiers for aqueous basic solutions of phenolic resoles

Beta-hydroxyalkylcarbamylmethylated aminotriazines and curable compositions containing the same

30,120 BETA-HYDROXYALKYLCARBAMYLMETHYLATED AMINOTRIAZINES AND CURABLE COMPOSITIONS CONTAINING THE SAME ABSTRACT Novel beta-hydroxyalkylcarbamylmethyl aminotri-azines function in self-condensation and as cross-linkers for amino resins and also compounds containing active hydrogen groups. The compositions cure to coatings with excellent properties, and they can be used as binders for fillers such as insulating glass and foundry sand.

A kind of precoated sand and preparation method thereof for 3D printing

本发明涉及一种覆膜砂及其制备方法，尤其涉及一种用于3D打印的覆膜砂及其制备方法。本发明的用于3D打印的覆膜砂包括以下重量份的原料组分：石英砂180‑220份、钢纤维15‑20份、酚醛树脂25‑30份、己二酸二酰肼10‑15份、黏土30‑40份、胶黏剂8‑12份、润滑剂8‑12份、聚氯乙烯增塑剂8‑12份、羧甲基纤维素钠8‑12份。本发明的用于3D打印的覆膜砂，利用钢纤维提高了覆膜砂的韧性及抗拉强度；利用己二酸二酰肼降低了酚醛树脂反应过程中产生的臭气，避免大气污染，保护环境；利用聚氯乙烯增塑剂降低了覆膜砂的热膨胀性，从而降低了3D打印时产生的裂纹的量，提高了成品质量和寿命。

Process for making molds

The invention disclose a process for making molds which do not generate toxic gas in pouring a molten metal into the molds equipped with casting cores or the like even when the binder contained therein decomposes and which are excellent in the disintegration characteristics after casting. The process comprises mixing a particulate aggregate with one or more water-soluble binders, a surfactant, a crosslinking agent and water under stirring and foaming to prepare a foamed aggregate mixture, charging the foamed aggregate mixture into a mold-foaming cavity, solidifying the charged mixture by evaporating the water contained in the mixture to form a mold, and taking the mold out of the cavity.

Resin-sand mixture moulding

A resin-sand mixture which contains a synthetic or natural binding agent and a surface active material is foamed into a liquid state and poured into a mould pre-heated to 100-300 degrees C. Specifically, the moulding sand has 0-10% of the binding agent weight of a hardener.

PROCESS FOR THE PREPARATION OF CERAMIC FOUNDRY CORES

La présente invention concerne un procédé de fabrication d'un noyau céramique comprenant les étapes successives suivantes : -a) coulée ou injection basse pression dans un moule sacrificiel ou permanent imprimé 3D d'une suspension comprenant une poudre céramique, un solvant, un dispersant et un système gélifiant constitué par soit un mélange monomère/réticulant/catalyseur soit un polymère gélifiable ; -b) gélification de la suspension de l'étape a); -c) séchage du gel de céramique obtenu à l'étape b) ; -d) démoulage ou élimination du moule de façon à obtenir un noyau cru compact ; -e) déliantage du noyau cru compact obtenu à l'étape d) ; -f) frittage de la pièce obtenue à l'étape e) -g) récupération du noyau céramique. Elle concerne en outre une suspension pour la fabrication d'un noyau céramique par coulée ou injection basse pression, comprenant une poudre céramique, un solvant, un dispersant et un système gélifiant constitué par soit un mélange monomère/réticulant/catalyseur soit un polymère gélifiable. The present invention relates to a method of manufacturing a ceramic core comprising the following successive steps: a) low pressure casting or injection in a 3D printed sacrificial or permanent mold of a suspension comprising a ceramic powder, a solvent, a dispersant and a gelling system consisting of either a monomer / crosslinking / catalyst mixture or a gellable polymer; -b) gelation of the suspension from step a); -c) drying the ceramic gel obtained in step b); -d) demoulding or removal from the mold so as to obtain a compact green core; -e) debinding of the compact raw core obtained in step d); -f) sintering of the part obtained in step e) -g) recovery of the ceramic core. It further relates to a suspension for the manufacture of a ceramic core by casting or low pressure injection, comprising a ceramic powder, a solvent, a dispersant and a gelling system consisting of either a monomer / crosslinking / catalyst mixture or a gellable ...

Inorganic-organic composition

BINDERS CONTAINING TITANIC ACID ESTERS FOR COATING MASSES AND REFRACTORY PRODUCTS, AND PROCESS FOR PREPARING SUCH BINDERS

BINDER FOR CERAMIC MOLD SHELLS FOR PRECISION CASTING

Silica sol binder - from ethyl silicate and silica sol for binding refractory aggregates

A binder is made by acidifying ethyl silicate, rendering water compatible therewith, then completing hydrolysis by adding a basic silica sol. The binder, used for refractor aggregates, may be formed from ethyl silicate forming >=28% wt. and 6-50% vol. of the binder; a mixt. of water and a water-miscible solvent, the mixt. forming 20-50% vol. of the binder; a mineral acid sufficient to confer on the binder a final pH 5; and a basic aq. silica sol. contg. 15-45% wt. silica and forming 10-75% vol. of the binder.

Self-curing foundry moulding sand - contg. phenol-aldehyde binder, acid, and phenoxy-alkyl-alkoxy-silane curing agent

Self-curing moulding sand for the prodn. of foundry moulds and cores consists of a foundry sand, a phenol-alde: hyde resin binder, and acid catalyst, and a phenoxy-alkyl-alkoxy-silane curing agent of formula: (where X is H, alkyl, alkoxy or O(CH2)nSi(OR)3 n is 2 or 3; and R is 1-4 C alkyl). The sand cures rapidly, has good mechanical strength in both initial and final stages of curing, and is non-toxic.

COMPOSITION BASED ON A COPOLYMER SEQUENCE INTENDED TO IMPROVE THE VISCOSITY INDEX OF A LUBRICATING OIL AND ITS APPLICATIONS

Precision casting mold

COMPOSITION TO BE MOLDED AND METHOD OF ITS USE

L'invention concerne une composition à mouler et un procédé de son utilisation. On obtient les compositions à mouler de l'invention par mélange des composants d'une résine de polyuréthanne et d'un granulat (sable), d'un silane et d'oxyde de fer, on moule le mélange sous la forme désirée et on le durcit L'invention s'applique en particulier à la préparation de noyaux et de moules de fonderie. The invention relates to a molding composition and a method of its use. The molding compositions of the invention are obtained by mixing the components of a polyurethane resin and an aggregate (sand), a silane and iron oxide, the mixture is molded into the desired shape and the mixture is formed. hardening The invention applies in particular to the preparation of foundry cores and molds.

Furan no-bake foundry binders and their use

This invention relates to furan no-bake foundry binders comprising (a) furfuryl alcohol and/or a reactive furan resin; (b) an activator selected from the group consisting of resorcinol, resorcino l pitch, and bisphenol A tar; (c) a bisphenol compound; (d) a polyol selected from the group consisting of polyester polyols, polyether polyols, and mixtures thereof, and preferably (e) a silane. The binders are cured in the presence of the furan curing catalyst. The invention also relates to foundry mixes prepared with the binder, foundry shapes prepared with the foundry mix, and metal castings prepared with the foundry shapes.

Patent FR2640965B1

APPLICATION OF AMINE MIXTURES FOR BARS FORMED BY CASTING AND CASTING METALS

1. Катализатор затвердевания композиции композиционной смолы, представляющий собой смесь, по меньшей мере, двух третичных аминов. ! 2. Катализатор по п.1 для затвердевания литейной формы способом изготовления стержней в холодных ящиках. ! 3. Катализатор по п.1 или 2, в котором каждый амин присутствует в смеси в количестве не менее чем 10 мас.% и не более чем 90 мас.%. ! 4. Катализатор по п.1 или 2, в котором смесь содержит, по меньшей мере, один третичный амин, содержащий 3-5 атомов углерода, по меньшей мере, с одним третичным амином, содержащим 6-10 атомов углерода. ! 5. Катализатор по п.1 или 2, в котором амины выбирают из триметиламина, N-метилазиридина, диметилэтиламина (DMEA), N-метилазетидина, N-этилазиридина, диэтилметиламина (DEMA), диметилизопропиламина (DMIPA), диметил-н-пропиламина (DMPA), N-пропилазиридина, N-изопропилазиридина, N-этилазетидина, N-метилпирролидина, N,N,N',N'-тетраметилдиаминметана, триэтиламина (TEA), метилэтил-н-пропиламина, метилэтилизопропиламина, диметил-н-бутиламина, диметил-втор-бутиламина, диметилизобутиламина, диметил-трет-бутиламина, N-этилпирролидина, N-метилпиперидина, гексаметилентетрамина, диметилпиперазина, N,N,N',N'-тетраметилдиаминоэтана, диметилпентиламинов, метилэтилбутиламинов, диэтилпропиламинов, дипропилметиламинов, N-пропилпирролидинов, N-этилпиперидина, диметилгексиламинов, метилэтилпентиламинов, диэтилбутиламинов, дипропилэтиламинов, N-бутилпирролидинов, N-пропилпиперидинов, диэтилпиперазина, диметилгептиламинов, метилэтилгексиламинов, диэтилпентиламинов, трипропиламинов, N-пентилпирролидинов, N-бутилпиперидинов, диметилоктиламинов, метилэтилгептиламинов, диэтилгексиламинов, этилпропилпенти� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 131 704 (13) A (51) МПК B22C 1/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2009131704/02, 22.01.2008 (71) Заявитель(и): АРКЕМА ФРАНС (FR) Приоритет(ы): (30) Конвенционный ...

REFRACTORY BINDER COMPOSITION AND PROCESS FOR PRODUCING THE SAME

Refractory binder composition and method for obtaining it

L'INVENTION CONCERNE UNE COMPOSITION DE LIANT REFRACTAIRE DESTINEE A LA CONFECTION DE MOULES OU AUTRES DISPOSITIFS REFRACTAIRES. LADITE COMPOSITION COMPREND DE LA SILICE COLLOIDALE, UNE MATIERE LIQUIDE CONTENANT DES GROUPES SI-OH, UN SOLVANT APTE A SOLUBILISER LA MATIERE LIQUIDE ET LA SILICE COLLOIDALE, ET AU MOINS UN COMPOSE ORGANIQUE NON METALLIQUE, NON IONIQUE, APROTIQUE QUI CONTIENT AU MOINS UN ELEMENT CHOISI PARMI A, S, B ET N ET QUI STABILISE LA COMPOSITION A L'ENCONTRE D'UNE AUTO-GELIFICATION, LA COMPOSITION POUVANT ETRE GELIFIEE A LA DEMANDE EN UNE SEULE PHASE. APPLICATION EN PARTICULIER A L'OBTENTION DE PIECES METALLIQUES COULEES.

Patent FR2244583B1

Manufacturing process of a foundry mold resistant to metallurgical reactions

Bonding agent for inorganic oxidizable material

COMPOSITION AND PROCESS FOR THE MANUFACTURE OF MOLDS AND CORES FOR FOUNDRIES

Material composition and method for its manufacture

A material composition for play or modelling purposes comprises a particulate material (2) and a binder (3) which is disposed as thin layers on the particles. The binder includes a hydroxy-terminated polymer cross-linked by a boron compound, in particular a silicon oil. According to the present invention, the concentration of particles (2) is 90-98 vol% of the finished composition. A method for producing the material composition comprises the steps that the particles (2) are placed in a mixer, that the hydroxyl-terminated polymer, in particular silicon oil, is added and distributed as thin layers on the surfaces of the particles and that thereafter a boron-containing cross-linking agent is added in solution and mixed so that a cross-linking of the polymer takes place and the viscosity increases.

Molding material for producing shell molds for casting purposes

Modifier for aqueous base solution of phenolic resole resin

Process for use in foundry practice

Organic silicates

Mfr. of moulds for casting high melting metals - by forming a graphite compsn. around a water-soluble model

Mfr. comprises (a) mixing graphite particles, ethyl silicate binder mixer or hydrolysed with the equiv. amount of water, and a hardener to a flowable material, which is (b) formed into a mould, (c) dipped into water when semigelled to achieve further hardening, and (d) dried and baked. Method is used esp. for casting of Ti and its alloys, No erosion or gas evolution occurs in contact with the molten metal. The mould has high strength and can simply and cheaply made, with high accuracy. Parts with deep holes and complex shape, which are difficult to make by the lost wax process can be produced.

Process for making molds

The invention discloses a process for making molds which do not generate toxic gas in pouring a molten metal into the molds equipped with casting cores or the like even when the binder contained therein decomposes and which are excellent in the disintegration characteristics after casting. The process comprises mixing a particulate aggregate with one or more water-soluble binders, a surfactant, a crosslinking agent and water under stirring and foaming to prepare a foamed aggregate mixture, charging the foamed aggregate mixture into a mold-forming cavity, solidifying the charged mixture by evaporating the water contained in the mixture to form a mold, and taking the mold out of the cavity.

Organic titanate materials

High-breathability moulding sand using thermoplastic oxidized-starch modified gelatin as adhesive and preparation method thereof

本发明公开了一种以热塑性氧化淀粉改性动物胶作为粘接剂的高透气性型砂，该型砂利用热塑性氧化淀粉对动物胶进行改性处理，制备得到一种新型的型砂粘接剂，这种粘接剂先将动物胶溶液醚化处理，随后将其与经聚丙烯酰胺塑化处理的氧化淀粉糊化液混合交联，得到了具有良好粘结强度和高环保性的粘接剂；原料中的海藻酸钠与氯化钙可交联杂化，形成高透气的微孔通道，提高了复合型砂的透气性。本发明制备的型砂环保安全，铸件质量好，生产成本低，在铸造领域具有广阔的应用前景。

PROCEDURE FOR THE MANUFACTURE OF NUCLEAR PIPE OF METALS WITH HIGH MELTING POINT

Adhesive for casting and preparation method thereof

本发明公开了一种铸造用酸性乳胶及其制备方法，主要针对钛、锆即其合金铸造领域中的二醋酸锆粘接剂的杂化改性，尤其是针对二醋酸锆粘接剂的回溶性改进，在二醋酸锆粘接剂中加入酸性乳胶、丙烯酸乳液、醋酸乙烯酯乳液对其进行杂化改性，从而提高粘接剂的抗回溶性，消除了在型壳制造过程中的回溶问题，减少了由于型壳回溶造成的表面涂层脱落和表面析出物产生的夹杂缺陷。

Two part binding agent system, useful for the production of casting molds and cores, containing a solvent consisting of an alkylsilicate and/or an alkylsilicate oligomer

Zweikomponenten-Bindemittelsystem, bestehend aus einer Phenolharz-Komponente und einer Polyisocyanat-Komponente, wobei die Phenolharz-Komponente ein Phenolharz mit mindestens zwei OH-Gruppen pro Molekül und die Polyisocyanat-Komponente ein Polyisocyanat mit mindestens zwei Isocyanat-Gruppen pro Molekül umfaßt, und wobei zumindest die Phenolharz-Komponente ein Lösungsmittel enthält, dadurch gekennzeichnet, daß das Lösungsmittel für das Phenolharz eine Substanz umfaßt, die aus der Gruppe ausgewählt ist, die Alkylsilikate, Alkylsilikat-Oligomere und deren Gemische umfaßt und/oder die Polyisocyanat-Komponente ein Lösungsmittel enthält, welches eine Substanz umfaßt, die aus der Gruppe ausgewählt ist, die Alkylsilikate, Alkylsilikat-Oligomere und deren Gemische umfaßt.

Production of casting mold

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Model processing

Beta-hydroxyalkylcarbamylmethylated aminotriazines and curable compositions containing the same

Novel beta-hydroxyalkylcarbamylmethyl aminotri­azines function in self-condensation and as cross-linkers for amino resins and also compounds containing active hydrogen groups. The compositions cure to coatings with excellent properties, and they can be used as binders for fillers such as insulating glass and foundry sand.

BINDING COMPOSITION, MOLDING COMPOSITION, FOUNDRY FORM MANUFACTURING PROCESS, METAL FOUNDRY PROCESS AND PROCESS OF OBTAINING A BINDING COMPOSITION

Process for use in foundry practice

在用升温固化模塑料制作铸模(6)的方法中，铸模(6)和/或芯(20)的制作采用的是通过电磁辐射的作用对模塑料各层实施分层选择性固化的方法，而不必预先制作模组件。

Aggregate for casting

Processes for use in foundry technology

SAND MIXTURES FOR THE PREPARATION OF MOLDS AND CORES, AND PROCESS FOR HARDENING SUCH A MIXTURE

Process for preparing refractory molded articles and binders therefor

This invention provides a process for preparing a refractory molded article comprising the steps of (a) forming a molded article matrix from an aggregate and the first binder, (b) impregnating the molded article matrix formed in step (a) with the second binder consisting of an alcoholic solution of one kind or two or more kinds of metal alkoxides selected from alkoxides of metals of Group 4A or Group 4B (excepting carbon) and Group 3A or Group 3B of the periodic table and their partial hydrolysates and an alkaline compound of alkali metal or alkaline earth metal (one kind or a mixture of two or more kinds selected from alkoxides, hydroxides and salts of the metal) and (c) drying and firing the molded article matrix at high temperature and also provides a binder for the preparation of such refractory molded article. The invention provides a process for preparing a refractory molded article and a binder with advantages such as casting of a molten metal without generation of gases and prevention of such defects as blow holes, good flow of a molten metal enabling thin-wall casting of steel, reduced requirement of riser in steel casting compared with cold casting, good dimensional precision, wide applicability to materials ranging from light alloy to steel, and an inner part for adjustment of strength and improvement of crumbling characteristics.

Patent FR2219962A1

COLD-BOX CONNECTING SYSTEMS AND MIXTURES FOR APPLICATION AS ADDITION FOR SUCH CONNECTING SYSTEMS

Описана смесь, получаемая преобразованием предварительной смеси (av) метансульфоновой кислоты (bv) одного или нескольких сложных эфиров одной или нескольких кислородных кислот фосфора и (cv) одного или нескольких силанов. Кроме того, изобретение относится к применению упомянутой смеси в качестве добавки для полиизоцианатного компонента двухкомпонентной системы связующих веществ для получения полиуретановой смолы. Далее, данное изобретение относится к содержащему полиизоцианат раствору для применения в качестве компонента системы формовочных и связующих веществ, а также применению содержащего полиизоцианат раствора в качестве полиизоцианатного компонента двухкомпонентной системы связующих веществ для получения полиуретановой смолы и к соответствующей двухкомпонентной системе связующих веществ для получения полиуретановой смолы. A mixture obtained by converting a preliminary mixture (av) of methanesulfonic acid (bv) of one or several esters of one or several oxygen acids of phosphorus and (cv) of one or several silanes is described. In addition, the invention relates to the use of the above mixture as an additive for the polyisocyanate component of a two-component binder system for the preparation of a polyurethane resin. Further, this invention relates to a solution containing a polyisocyanate for use as a component of a molding and binder system, as well as a solution containing a polyisocyanate as a polyisocyanate component of a two-component binder system for producing a polyurethane resin and to a corresponding two-component binder system for producing a polyurethane resin.

PROCEDURE FOR THE FORMATION OF CASTLE CORNES AND FORMS WHEN USING A BINDING MATERIAL HARDENABLE BY FRERADICAL POLYMERIZATION

Inorganic-organic plastics

Foundry binder systems which contain a silane-modified polyisocyanate

The invention relates to phenolic-urethane foundry binder systems containing a silane-modified polyisocyanate. The silane-modified polyisocyanates are prepared by reacting a polyisocyanate with an organosilane. The foundry binders are used to make foundry shapes, which are used to cast metal parts.

Patent FR2455934B1

Precision casting mould binder - based on silica organosol diluted with aq. phosphate soln. for increased stability

A precision casting mould based on refractory aggregates is made using a binder which is prepd. by mixing a silica hydrosol, contg. 3-6% SiO2, with an organic liq., and, after separating, recovering an organosol contg. 16-30% SiO2. The organosol is diluted up to approx. 20 vol.% with water contg. is approx. 4% phosphates. The refractory aggregates are bonded by colloidal silicic acid as well as by a phosphate bond during melting of the metal to be cast. A low cost mould with a strong SiO2 organosol bond is mfrd. The mechanical properties and stability are improved. Conventional appts. is used in the prepdn. of the organosol and the mould. It is not necessary to supply any energy nor is there any evolution of pollutants. The sols. are compatible with all the usual refractory materials used in precision casting moulds. Heavier parts can also be cast.

Molding agent for mold and core production.

Bir fenolik reçine bileseninden ve bir poliisosiyanat bileseninden olusan iki bilesenli bir baglayici madde sistemi tarif edilmektedir. Fenolik recine bileseni molekül basina asgari iki OH-gruplu bir fenolik reçineyi ve poliisosiyanat bileseni molekül basina asgari iki isosiyanat grubu bulunan bir poliisosiyanati kapsamaktadir. Bu yeni baglayici madde sisteminde, fenolik reçinenin çözücü maddesi alkilsilikatlari, alkilsilikat oligomerleri ve bunlarin karisimlari seklindeki bir gruptan seçilmis olan bir maddeyi ve/veya poliisosiyanat bileseni de bu türdeki bir maddeyi kapsayan bir çözücü maddeyi içerir. Burada tercih edilen alkilsilikat, tetraetilsilikattir. A two-component binder system comprising a phenolic resin component and a polyisocyanate component is described. The phenolic resin component includes a phenolic resin with at least two OH-groups per molecule and a polyisocyanate component with at least two isocyanate groups per molecule. In this new binder system, the solvent of the phenolic resin includes a substance selected from a group, such as alkylsilicates, alkylsilicate oligomers and mixtures thereof, and / or a polyisocyanate component, including a solvent. Preferred alkylsilicate here is tetraethyl silicate.

Manufacturing process for molding shells and shell-cores

Process for preparing refractory molded articles and binders therefor

본 발명은, (a) 골재와 제1바인더를 결합하여 성형품 소체를 형성하는 공정 ; (b) 주기율표 4A족 또는 탄소를 제외한 4B족 및 3A족 또는 3B족의 금속알콕시드 및 그들의 부분 가수분해물 중에서 선택된 1종 또는 2종 이상의 금속알콕시드류와, 알칼리금속 또는 알칼리도금속의 알칼리화합물을 함유하는 알코올 용액으로 이루어지는 제2바인더를, 전기 공정 (a)에 의해 성형된 성형품 소체에 함침시켜 가수분해시키는 공정 ; (c) 성형품 소체를 건조시켜 고온에서 소성하는 공정으로 이루어짐을 특징으로 하는 내화물 성형품의 제조방법이고, 또 이와 같은 내화물 성형품을 제조하는데 사용되는 내화물 성형룸 바인더이다. The present invention, (a) a step of combining the aggregate and the first binder to form a molded article body; (b) contains one or two or more metal alkoxides selected from metal alkoxides of Groups 4B and 3A or 3B other than Group 4A or carbon of the periodic table and their partial hydrolysates, and alkali compounds of alkali metals or alkali metals A step of impregnating and hydrolyzing a second binder composed of an alcohol solution to be formed into the molded article body formed by the electrical step (a); (c) A method for producing a refractory molded article, which comprises a step of drying a molded article body and firing at high temperature, and a refractory molding room binder used for producing such a refractory molded article. 본 발명에 의하면, 주탕시에 기체 발생이 없고, 기포등의 주조결함을 방지할 수 있고, 또 탕의 흐름이 원활하며, 주강품 등의 살을 얇게 만들 수 있고, 더욱이 상온주조와 비교하여 적은 라이저(riser)로 주강등 등의 주조가 가능하다는 잇점이 있고, 또 양호한 치수정밀도를 얻을 수 있고, 경합금으로부터 주강품에 이르기까지의 주조에 이용할 수 있고, 내심부에 강도를 조절할 수 있고, 붕괴성을 향상시킬 수 있는 내화물 성형품의 제조방법 및 내화물 성형품용 바인더를 제공할 수 있다. According to the present invention, there is no gas generation at the time of pouring, it is possible to prevent casting defects such as bubbles, the flow of the water is smooth, the thickness of cast steel products can be made thin, and the riser is less than that at room temperature casting. (riser) has the advantage that casting such as cast steel can be obtained, and good dimensional accuracy can be obtained, it can be used for casting from light alloy to cast steel, strength can be adjusted to the inner core, The manufacturing method of the refractory molded article which can be improved, and the binder for refractory ...

Binding agent compositions.

Binding agent compositions for inorganic fillers or oxides containing a curable binder such as a hardenable resin, and a ureido-functional organosiiicon compound as described. Foundry sand compositions including binding agent compositions as described, sand and a catalyst for the hardenable resin. Shaped products comprising inorganic oxide particles, e.g., sand, a binding agent composition as described and catalyst for the hardenabie resin wherein the hardenable resin is in its hardened form. Novel ureido-functional organosilicon compounds having two hydrolyzable or hydroxy groups to the molecule and at least one ureido-functionai group in which the ureido group is connected to silicon by means of a group containing at least five carbon atoms.

LAMINATED REFRACTORY COMPOSITION AND METHOD FOR FORMING SAME

L'INVENTION CONCERNE UN PROCEDE DE FORMATION D'UNE COMPOSITION REFRACTAIRE STRATIFIEE SUR UNE SURFACE. LE PROCEDE CONSISTE A APPLIQUER EN ALTERNANCE SUR LA SURFACE UNE COMPOSITION A BASE DE SOL DE SILICE COLLOIDALE BASIQUE ET UNE COMPOSITION A BASE DE LIANT HYBRIDE ACIDE, DE SORTE QUE CHAQUE COUCHE DE L'UNE DES COMPOSITIONS SOIT AU CONTACT D'UNE COUCHE DE L'AUTRE COMPOSITION, ET A SECHER CHAQUE COUCHE APPLIQUEE JUSQU'A CE QU'ELLE ATTEIGNE UNE DURETE SUFFISANTE POUR QUE LES COUCHES APPLIQUEES NE SE SOULEVENT PAS DE LA SURFACE LORS DE L'APPLICATION D'UNE COUCHE SUIVANTE. APPLICATION A LA FABRICATION DE MOULES-CARAPACES POUR LE MOULAGE A MODELE PERDU. THE INVENTION RELATES TO A PROCESS FOR FORMING A REFRACTORY COMPOSITION LAMINATED ON A SURFACE. THE PROCESS CONSISTS OF APPLYING ALTERNATIVELY TO THE SURFACE A COMPOSITION BASED ON BASIC COLLOIDAL SILICA SOL AND A COMPOSITION BASED ON ACIDIC HYBRID BINDER, SO THAT EACH LAYER OF ONE OF THE COMPOSITIONS IS IN CONTACT WITH A LAYER. 'OTHER COMPOSITION, AND DRY EACH COAT APPLIED UNTIL IT REACHES SUFFICIENT HARDNESS SO THAT THE APPLIED COATS DO NOT LIFT FROM THE SURFACE WHEN APPLYING A NEXT COAT. APPLICATION TO THE MANUFACTURE OF SHELL MOLDS FOR LOST MODEL MOLDING.

Resin coated sand for shell mold

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Bonding agent for use in 3d printing process and preparation method and application thereof

A bonding agent for use in a 3D printing process comprises the following components: 15-60 parts by weight of a furan resin, 42-68 parts by weight of furfuryl alcohol, 1-12 parts by weight of an accelerator, and 0.1-5 parts by weight of an additive, wherein the said furan resin is prepared by the reaction of phenolic resin and furfuryl alcohol. Also disclosed are a preparation method and application of a bonding agent for use in a 3D printing process. The above bonding agent for use in a 3D printing process has an extremely low viscosity at room temperature, and its viscosity is lower than 10 mPa.s at 20 °C, thus meeting the resin requirements of the print head in 3D printing equipment, such that the print head is not easily blocked, thereby facilitating the maintenance of the machine. The bonding agent has good performance for wrapping sand particles in the process of sand applying, and the printed sand mold has higher mechanical strength and faster curing speed, thus facilitating sand dropping and cleaning and improving the operational performance.

Alkaline benzylic ether phenolic resin binders

PROCEDURE AND FORMATION OF CASTLE CORNES AND FORMS WHEN USING A BINDING MATERIAL HARDENABLE BY FRERADICAL POLYMERIZATION

Binders

Storage-stable preparations based on aqueous silicic acid solutions

Use of amine blends for foundry shaped cores and casting metals

Compositions of matter containing organic silicates

Masses based on hydrocarbon ether polysihcat

Furan No-bake Foundry Binders and Their Use

본 발명은 (a) 푸르푸릴 알코올 및(또는) 반응성 푸란 수지, (b) 레조르시놀, 레조르시놀 피치 및 비스페놀 A 타르로 이루어진 군으로부터 선택된 활성제, (c) 비스페놀 화합물, (d) 폴리에스테르 폴리올, 폴리에테르 폴리올 및 이들의 혼합물로 이루어진 군으로부터 선택된 폴리올, 및 바람직하게는 (e) 실란을 포함하는 푸란 자경성 주형 결합제에 관한 것이다. 상기 결합제는 푸란 경화 촉매의 존재하에 경화된다. 본 발명은 또한 상기 결합제로 제조된 주형 믹스, 상기 주형 믹스로 제조된 주형 형상, 및 상기 주형 형상으로 제조된 금속 주물에 관한 것이다.

BLANDNING LAEMPLIG FOER ANVAENDNING SOM SMOERJMEDELSTILLSATS