Resin sand pyrolysis product observation simulation test device and operation method

The invention discloses a resin sand pyrolysis product observation simulation test device and an operation method, relates to an observation simulation test device and an operation method, and provides equipment and an operation method for detecting pyrolysis products of a magnesium alloy sand mold under a high-temperature condition after the magnesium alloy sand mold is pyrolyzed. Various gas components generated after pyrolysis of different sand molds at high temperature can be detected. The invention discloses a resin sand pyrolysis product observation simulation test device. A pipeline and a control system are mounted on an integrated treatment reaction chamber; the resin heating reaction chamber is installed at the top end of the resistance furnace, the feeding assembly is installed on the side wall of the resin heating reaction chamber, the thermocouple is inserted into the resin heating reaction chamber, the infrared spectrum detector is communicated with the resin heating reaction ...

Magnesium alloy sand mold casting pyrolysis atmosphere detection device and detection method

The invention discloses a magnesium alloy sand mold casting pyrolysis atmosphere detection device and a detection method, relates to a pyrolysis atmosphere detection device and a detection method, and aims to solve the problems that after resin sand is pyrolyzed at high temperature, the pressure in a mold cavity is increased, the oxidation reaction rate of a casting is increased, and a severe oxidation reaction possibly causes melt combustion in the mold cavity; the gas outlet end of a first gas tank is communicated with the gas inlet end of a thermogravimetric analyzer, the thermogravimetric analyzer is communicated with a pyrolysis gas bypass and a Fourier transform infrared spectrometer, the gas outlet end of a second gas tank is communicated with the other gas inlet end of the Fourier transform infrared spectrometer, and the gas outlet end of the second gas tank is communicated with the other gas inlet end of the Fourier transform infrared spectrometer. And the control system is connected ...

Automatic scanning atomizer suitable for spray forming

The invention provides an automatic scanning atomizer applicable to spray forming, which relates to an atomizer. The invention solves the problems of the atomizers in the prior art that the scope of application is narrow and the spray forming process is difficult to control, etc. Two symmetrical oscillatory gas chambers (3) are arranged at the two ends of an atomizer body (11); two oscillatory gas inlet pipes (4) are respectively communicated with the two oscillatory gas chambers (3); a circular atomized gas chamber (9) is arranged at the center of the bottom head face of the atomizer body (11); one end of an atomized gas inlet pipe (1) is communicated with the circular atomized gas chamber (9); a plurality of oscillatory gas outlet holes (8) are evenly and symmetrically distributed on the lateral wall of the lower part of the two oscillatory gas chambers (3); a conical atomized gas outlet hole (10) are arranged between a circular gas chamber bottom cover (12) and a cylindrical lateral ...

Assisted densification ultrasonic vibration and deposition device for spray-formed deposition billet

The invention provides an assisted densification ultrasonic vibration and deposition device for a spray-formed deposition billet, and relates to an ultrasonic vibration and deposition device, which is used for solving the problem that the deposition billet with excellent properties can be obtained after densification treatment due to the wide freezing range, high viscosity, difficulty in spreading and high possibility of gap formation during the existing fogdrop deposition process. The assisted densification ultrasonic vibration and deposition device comprises a deposition disk (1) and a rotary motor (2), wherein, the deposition disk (1) is arranged on an output shaft of the rotary motor (2); and the device further comprises a flange (3), a piezoelectric ceramic (4) and a support disk (5) which are sequentially and fixedly connected together and sheathed on the rotary motor (2) from the top to bottom. The assisted densification ultrasonic vibration and deposition device is suitable for ...

Amorphous composite material electrolyzed water catalyst and preparation method thereof

The invention relates to an amorphous composite material water electrolysis catalyst and a preparation method thereof, and aims to solve the problems that an existing OER catalyst contains noble metal, the cost is high, and the catalytic activity needs to be improved. The preparation method comprises the following steps: 1, weighing simple substances of iron, nickel, molybdenum and boron as raw materials according to the chemical formula of Fe < 38-42 > Ni < 36-40 > Mo < 0-5 > B < 16-20 >, and smelting the raw materials to obtain a master alloy ingot; 2, carrying out suction casting on the master alloy ingot by adopting a water-cooling copper mold suction casting method; 3, putting the alloy bar into a crucible, preheating a copper wheel by utilizing a baking lamp, starting the copper wheel to rotate, and treating the alloy bar by adopting a melt drawing method; and 4, dealloying treatment. The microstructure of the amorphous composite water electrolysis catalyst is that nanocrystals are ...

Preparation method and application of high-entropy alloy electro-catalysis electrode with core-shell structure

The invention discloses a preparation method and application of a high-entropy alloy electro-catalysis electrode with a core-shell structure, and aims to solve the problems that an existing electro-catalysis oxygen evolution/full water electrolysis electrode is low in applicable current density and cannot stably work under the industrial-grade current density. The preparation method comprises the following steps: 1, weighing all elementary metal raw materials according to the atomic percentage content; 2, smelting the mixed metal raw materials into a metal cast ingot by adopting a high-vacuum electric arc smelting furnace, and then melting and suction casting the metal cast ingot into a rod-shaped master alloy; and thirdly, a mechanical pump and a molecular pump are used for conducting vacuum pumping on melt rotary quenching equipment, oxygen is introduced, a copper wheel is started to rotate, an induction coil power source is started to heat and melt the rod-shaped mother alloy, molten ...

Multi-physics-field auxiliary sheet metal cup drawing test device

The invention discloses a multi-physics-field auxiliary sheet metal cup drawing test device, and relates to a sheet metal cup drawing test device. The device aims to solve the problem that an existing cup drawing test device cannot perform cup drawing test on a metal plate under multiple complex conditions such as a magnetic field and an ultrasonic field. The device is composed of a support, an electromagnetic coil fixing box, an ultrasonic generator fixing plate, a first ultrasonic vibrator, a liquid coupling agent filling pipe, a multifunctional punch, a second ultrasonic vibrator, a connecting block, a hydraulic cylinder, a sample fixing pressing plate and a sample fixing base. The cup drawing test can be carried out under the composite working condition of an ultrasonic field, a magnetic field and an electric field, and the relation between the physical field intensity and the material stamping deformation capacity can be quantitatively obtained by controlling the ultrasonic intensity ...

Method for preventing 5XXX aluminum alloy cast ingot from surface ruffle

A method for preventing a 5XXX aluminum alloy cast ingot from surface ruffle belongs to the aluminum alloy cast ingot processing technology; the additive amount of the trace element Ti of the aluminum alloy is controlled to range from 0.055 to 0.1/% of the gross weight of the aluminum alloy solution; Ti/B ranges from 12 to 15; the cross-section temperature gradient in a cast ingot temperature field is less than 0.05 DEG C/mm, and the casting speed is 100-120 mm/min. The method eliminates the generation of the surface ruffle of the aluminum alloy cast ingot, and is characterized by neat cast ingot surface, high smooth finish, uncracked rolling, stable mechanical property, high yield and simple processing technique.

Magnesium alloy U-shaped body flame-retardant forming structure and operation method

The invention discloses a magnesium alloy U-shaped body flame-retardant forming structure and an operation method, relates to an alloy forming structure and an operation method, and aims to solve the problems that the oxidative combustion speed on the surface of a U-shaped casting is higher than that of other casting parts due to casting positions and mold materials when the U-shaped casting is cast, and the production cost is low. And after casting and cooling, black oxide skin is formed, and severe combustion is caused. The invention further provides a magnesium alloy U-shaped body flame-retardant forming structure and an operation method. The bottom end of the U-shaped body is communicated with the top end of the pouring inlet pipe, the U-shaped body is arranged on the cooling box body, the supporting frame is arranged above the cooling box body, the U-shaped body is supported by the supporting frame, the riser pipe body is arranged at one end of the U-shaped body, and the exhaust system ...

Ultrahigh-strength aluminum alloy material and preparation method of pipe blank for preparing internal cylinder of separator

The invention relates to an ultrahigh-strength aluminum alloy material and a preparation method of a pipe blank for preparing an internal cylinder of a separator, belonging to the technical field of material processing and solving the problems that the traditional aluminum alloy material has lower tensile strength and the internal cylinder of the separator, which is prepared by using the traditional aluminum alloy material, can not meet the requirements on the separator for working for a long time at high rotating speed. The invention puts a technical emphasis on that the ultrahigh-strength aluminum alloy material comprises the following components in percentage by weight: 10.5-13.0wt% of Zn, 2.3-3.2wt% of Mg, 1.2-1.8wt% of Cu, 0.2-0.3wt% of Mn, 0.2-0.3wt% of Cr, 0.1-0.2wt% of Zr, 0.1-0.2wt% of Sc, less than 0.05wt% of Fe, less than 0.05wt% of Si and the balance of Al. The preparation method of the pipe blank comprises the following steps of: melting alloys, and casting into an alloy ingot ...

FeNi (Mo/Co) BP amorphous alloy oxygen evolution catalyst and preparation method thereof

The invention discloses a FeNi (Mo/Co) BP amorphous alloy oxygen evolution catalyst and a preparation method thereof, and aims to solve the problem of low catalytic activity of the existing amorphous alloy oxygen evolution catalyst. The FeNi (Mo/Co) BP amorphous alloy oxygen evolution catalyst is composed of iron, nickel, (molybdenum/cobalt), boron and/or phosphorus according to the atomic number ratio of (38-42): (36-40): (3-5): x: y, x + y = 16-20, and the amorphous alloy oxygen evolution catalyst is prepared into a thin strip, a microwire or a powder form by adopting three methods. According to the method, the amorphous alloy is subjected to proton irradiation treatment, the atomic disorder degree and free energy of the amorphous alloy are improved, the large enough atomic size difference is guaranteed by adding the B element and the P element, and then the amorphous forming ability of a system is improved. For example, the overpotential of the Fe40Ni38Mo4P18 amorphous alloy microwire ...

Mechanical swinging type atomizing liquid-leading system suitable for preparing large-size jet-diposition blank ingot

Atomizer for spray forming of high-melting-point alloy deposit billets

The invention discloses an atomizer for spray forming of high-melting-point alloy deposit billets, and relates to an atomizer. The invention solves the problem that deposit billets prepared by the atomizer have large grains and low compactness, and cannot be subjected to spray forming to form the high-melting-point alloy deposit billets. A thermal insulating crucible and an atomizing cone are fixedly connected through an atomization plant; the upper part of an upper atomizer is provided with a 35-degree inner taper hole, while the lower part is provided with a step hole communicated with the inner taper hole; the outer wall of the upper atomizer is provided with first external threads; the center of a lower atomizer is provided with first internal threads, a first cylindrical hole and a second cylindrical hole in turn from top to bottom; the side wall of the first cylindrical hole is provided with a second internal threaded hole; the first external threads are screwed in the first internal ...

Rapid forced cooling suitable for thick and large section casting parts

The invention discloses a rapid and forced cooling system which is suitable to castings with thick and big cross-sections, and the invention relates to a cooling system. The invention has a purpose for solving problems that existing spherical iron with the thick and big cross-sections has defects of spheroidalization decaying, spherical graphite deformation, graphite floatation, element inducing, abstraction, contraction cavity and the like and performance of the spherical iron with the thick and big cross-sections will be decreased rapidly after being cooled and eutectic-frozen for a comparatively long time. A delivery end of liquid nitrogen tank of the invention is connected with one end of a low-temperature shutoff valve, the other end of the low-temperature shutoff valve is connected with an entering end of a liquid nitrogen quench cooler, the other end of the liquid nitrogen quench cooler is arranged in a cavity of a cooling core pipe, and a jet is arranged on the liquid nitrogen quench ...

Nodularizer for nodular iron with thick section

The invention discloses a nodularizer for nodular iron with a thick section, and belongs to casting alloys. The nodularizer consists of elements of magnesium, silicon, barium, calcium, rare earth, antimony and iron, wherein the rare earth consists of cerium and yttrium; the nodularizer comprises 6 to 10 weight percent of magnesium, 40 to 48 weight percent of silicon, 5 to 6 weight percent of barium and calcium, 3 to 5 weight percent of rare earth, 0.4 to 0.7 weight percent of antimony and the balance of iron; the ratio of antimony to the rare earth is (8-14): 100; the 3 to 5 percent of rare earth contains 1.5 to 2.5 percent of cerium and 1.5 to 2.5 percent of yttrium; and the ratio of antimony to the cerium is (20-40): 100. After the nodularizer is applied, the nodular iron with the thick section can achieve satisfactory nodulizing effect within the curing time of 240 minutes, and the nodularizer particularly can inhibit graphite distortion in the nodular iron with the thick section.

Method for preventing residual magnesium alloy liquid in low-pressure pouring crucible from burning

The invention discloses a method for preventing residual magnesium alloy liquid in a low-pressure pouring crucible from burning, relates to a method for preventing pouring magnesium liquid from burning, and aims to solve the problem that the residual magnesium liquid in the crucible is easy to burn due to the burning of pouring cast magnesium, so that a tank body explodes. The method for preventing the residual magnesium alloy liquid in the low-pressure pouring crucible from burning comprises the steps that firstly, a liquid rising pipe flange on a liquid rising pipe is placed on a casting mold of low-pressure pouring equipment; secondly, the pressure in a casting mold of low-pressure pouring equipment is equal to the pressure in a working tank before low-pressure pouring; thirdly, gas is inflated into the working tank when pouring work begins; and 4, after the technical parameters and indexes of casting of the casting mold of the low-pressure casting equipment are completed, a lower pressure ...