Polymeric, fiber matrix delivery systems for bioactive compounds

SHEARING-CRUSHING SPONGE TITANIUM AND PROPER EQUIPMENT THEREOF

Tension control method of roller box type compact rolling mill for producing rod iron of large diameter

The invention relates to a tension control method in the metallurgical field, in particular to a rolling mill tension control method for producing a major-diameter coil rod by using a roll box-shaped compact type rolling mill. The control method comprises the following steps: adjusting rolling tension of rough and middle rolling mill units to the optimal state; recording a rolling current I1 of the rolling mill when a rolled piece passes through a No. 9 rolling mill and a No. 11 rolling mill of the middle rolling mill unit; recording a rolling current I2 of the No. 9 rolling mill or the No. 11 rolling mill again when the rolled piece is gripped into a No. 16 rolling mill of a CCR unit; comparing the rolling current I1 with the rolling current I2; improving the rotational speed of the No. 9 rolling mill or the No. 11 rolling mill to balance the tension when the rolling current I2 is less than the rolling current I1; and adjusting the telescoping amount of a loop according to the load current ...

BOF steelmaking flue intelligence belt cleaning device

The utility model relates to a BOF steelmaking flue intelligence belt cleaning device belongs to metallurgical industry flue cleaning equipment technical field. Technical scheme is: containing the flue and wasing and to wash and wash with pneumatic cut -off valve (3), converter gas cleaning system (4), add the pencil and say one (5) and add the pencil and say and add two (four to six -tenehss) the pencil and say that one (5) one end and flue wash with the entry intercommunication that adds liquid medicine pump (2) with adding liquid medicine pump (2), flue with adding liquid medicine case (1), flue, the other end and flue wash with adding liquid medicine case (1) intercommunication, and the flue washs says and add two (four to six -tenehss) and converter gas cleaning system (4) intercommunication the pencil and say that it washs with pneumatic cut -off valve (3) to be equipped with the flue on two (the four to six -tenehss) through adding the pencil with the export that adds liquid medicine ...

Fast centering method of water-cooled line workpieces in high-speed wire rod production line

The invention relates to a fast centering method of workpieces in the field of metallurgy, which is a fast centering method of water-cooled line workpieces in a high-speed wire rod production line and comprises the following steps of: respectively manufacturing model rods with the inner diameters 0.5 mm smaller than those of a finished product stand outlet guide, a misroll tank guide slot, a water cooling nozzle and a soaking guide slot; processing one end or both ends of each manufactured model rod into a needle point shape, wherein the diameter of the point is smaller than 1 mm; and respectively placing the model rods with the inner diameters 0.5 mm smaller than those of the inspected workpieces into inner holes thereof during centering inspection. When the head needle point parts of the model rods are superposed, the centering condition of adjacent workpieces is good. The fast centering method can effectively and fast realize centering between the finished product stand outlet guide ...

High-strength, corrosion-resistant and high-temperature creep-resistant magnesium alloy and preparation method thereof

The invention relates to a magnesium alloy technology and particularly relates to a high-strength, corrosion-resistant and high-temperature creep-resistant magnesium alloy and a preparation method thereof and is used for solving the problem of relatively poor mechanical properties of the existing magnesium alloy in a high-temperature state. The high-strength, corrosion-resistant and high-temperature creep-resistant magnesium alloy is prepared from the following raw materials in percentage by mass: 1%-1.5% of zinc, 8%-10% of gadolinium, 3%-5% of yttrium, 0.5%-1.0% of zirconium, and the balance of magnesium ingots and impurities. By adopting reasonable process steps and the formula, in the high-temperature state of 200 DEG C-350 DEG C, the tensile strength reaches 350MPa-390MPa, the yield strength reaches 250MPa-290MPa, the mechanical properties are substantially increased and the preparation method has the advantages of simple process and low cost and is convenient to operate.

Production method for improving large dimension wire size precision and surface quality

The invention discloses a production method for improving large dimension wire size precision and surface quality. The method is implemented by using the existing finishing mill set to modify the dummied frame in the finishing mill set used in producing large dimension wire into a regular round frame on the high speed wire production line for non-reducing sizing machine set, performing primary regular round rolling to the wires rolled by a finished product frame, thus improving large dimension wire size precision and surface quality, and simultaneously reducing head and tail cutting quantity of finished product wire and enhancing yield.

Technique for producing rod iron with large diameter for mechanical manufacture

The invention relates to a coil rod production process, in particular to a production process of a major-diameter coil rod for machine manufacturing. The heating time lasts 2.25 hours to 3 hours, and the heating speed ranges from 9 min/cm to 12 min/cm during the heating of a steel billet; the inlet temperature of a No. 0 rolling mill is controlled within the scope ranging from 950 DEG C to 1000 DEG C in a rough rolling procedure; the outlet temperature of a No. 11 rolling mill is controlled within the scope ranging from 1000 DEG C to 1050 DEG C in the medium rolling procedure; the outlet temperature of a No. 13 rolling mill is controlled within the scope ranging from 1050 DEG C to 1100 DEG C in the pre-finish rolling procedure; before the CCR rolling procedure, a rolled piece is led out from the pre-finish rolling procedure and enters a CCR rolling machine after being cooled in No. 4 and No. 5 water tanks, and the inlet temperature of the rolled piece in the CCR rolling machine is lower ...

Fast centering method of water-cooled line workpieces in high-speed wire rod production line

The invention relates to a fast centering method of workpieces in the field of metallurgy, which is a fast centering method of water-cooled line workpieces in a high-speed wire rod production line and comprises the following steps of: respectively manufacturing model rods with the inner diameters 0.5 mm smaller than those of a finished product stand outlet guide, a misroll tank guide slot, a water cooling nozzle and a soaking guide slot; processing one end or both ends of each manufactured model rod into a needle point shape, wherein the diameter of the point is smaller than 1 mm; and respectively placing the model rods with the inner diameters 0.5 mm smaller than those of the inspected workpieces into inner holes thereof during centering inspection. When the head needle point parts of the model rods are superposed, the centering condition of adjacent workpieces is good. The fast centering method can effectively and fast realize centering between the finished product stand outlet guide ...

Current and carrying capacity online monitoring and fault diagnosing and locating method for cable protection layer

The invention relates to a current and carrying capacity online monitoring and fault diagnosing and locating method for a cable protection layer, and belongs to the technical field of online monitoring and fault diagnosing and locating for power cables. According to the technical scheme, current data are collected by protection layer current sensors and a carrying capacity sensor synchronously and are uploaded to a data management platform through a communication network; state monitoring data are collected regularly, automatically processed and temporarily or permanently stored by the data management platform and are displayed on a monitoring center screen in real time, and various data reporting functions are provided; real-time protection layer current data in a database management platform are extracted and compared with an expected value by a fault diagnosing system; warning information is provided to cable operation maintaining personnel through an alarm unit once a fault in the cables ...

Installation method for feeding pipe guide of coiler

The invention relates to an installation method for a guide in the metallurgy field, in particular to an installation method for a feeding pipe guide of a coiler. The installation method comprises the following steps: arc radius of a guide wheel is set to be ranged from 10 mm to 30 mm, transition fillet radius of the guide wheel is set to be ranged from 3 mm to 8 mm, an access oil hole for oil-air lubrication is arranged on a pin shaft, a rolled piece sequentially penetrates through circular holes of three guides after the three guides are installed, and a sample bar with the diameter of 20 mm is used for detecting the contact position of the rolled piece and each guide wheel when the rolled piece penetrates through the circular hole of each guide entering each guide. The rolled piece is ensured to be always contacted with the arc surface of the guide wheel, and cannot be in gap contact with the guide wheel, otherwise, the guides need rotation regulation until being regulated to a proper ...

Technique for producing rod iron with large diameter for mechanical manufacture

The invention relates to a coil rod production process, in particular to a production process of a major-diameter coil rod for machine manufacturing. The heating time lasts 2.25 hours to 3 hours, and the heating speed ranges from 9 min/cm to 12 min/cm during the heating of a steel billet; the inlet temperature of a No. 0 rolling mill is controlled within the scope ranging from 950 DEG C to 1000 DEG C in a rough rolling procedure; the outlet temperature of a No. 11 rolling mill is controlled within the scope ranging from 1000 DEG C to 1050 DEG C in the medium rolling procedure; the outlet temperature of a No. 13 rolling mill is controlled within the scope ranging from 1050 DEG C to 1100 DEG C in the pre-finish rolling procedure; before the CCR rolling procedure, a rolled piece is led out from the pre-finish rolling procedure and enters a CCR rolling machine after being cooled in No. 4 and No. 5 water tanks, and the inlet temperature of the rolled piece in the CCR rolling machine is lower ...

SHEARING-CRUSHING SPONGE TITANIUM AND THE PROPER EQUIPMENT THEREOF

Production method for improving large dimension wire size precision and surface quality

The invention discloses a production method for improving large dimension wire size precision and surface quality. The method is implemented by using the existing finishing mill set to modify the dummied frame in the finishing mill set used in producing large dimension wire into a regular round frame on the high speed wire production line for non-reducing sizing machine set, performing primary regular round rolling to the wires rolled by a finished product frame, thus improving large dimension wire size precision and surface quality, and simultaneously reducing head and tail cutting quantity of finished product wire and enhancing yield.

Epoxy dry -type sleeve pipe

The utility model relates to an epoxy dry -type sleeve pipe, be tubulose hollow insulator including the center, the outside of insulator is provided with metal installation base, and the upper end head is provided with the end plate, and the end plate top is provided with the sealed fixed end of copper, and the sealed fixed end of this copper with set up lead -out wire in tubulose hollow guide tube and connect the copper conductor and is connected, be provided with the ground of being connected with the skin on insulator internal capacitance polar plate layer on the metal installation base and shield the device. This kind of epoxy dry -type sleeve pipe adopts column mould and metal installation base to be the sleeve pipe skeleton, adopts epoxy to be main insulating material, utilizes vacuum pressure gel technique to form the insulating main part of hollow sheathed tube with the epoxy pouring on the mould, its simple structure, the raw and other materials kind is few, and manufacturing is ...

Installation method for feeding pipe guide of coiler

The invention relates to an installation method for a guide in the metallurgy field, in particular to an installation method for a feeding pipe guide of a coiler. The installation method comprises the following steps: arc radius of a guide wheel is set to be ranged from 10 mm to 30 mm, transition fillet radius of the guide wheel is set to be ranged from 3 mm to 8 mm, an access oil hole for oil-air lubrication is arranged on a pin shaft, a rolled piece sequentially penetrates through circular holes of three guides after the three guides are installed, and a sample bar with the diameter of 20 mm is used for detecting the contact position of the rolled piece and each guide wheel when the rolled piece penetrates through the circular hole of each guide entering each guide. The rolled piece is ensured to be always contacted with the arc surface of the guide wheel, and cannot be in gap contact with the guide wheel, otherwise, the guides need rotation regulation until being regulated to a proper ...

Polymeric, fiber matrix delivery systems for bioactive compounds

Multifunctional systems for delivery of bioactive compounds incorporated within or between polymeric fibers in a matrix are provided. Also provided are methods of delivering bioactive compounds via implementation, coating and/or wrapping of these systems and methods for modulating the rate of release of bioactive compounds from these delivery systems.

Insulating oil volume compensation device system for oil immersed electrical device

The invention discloses an insulating oil volume compensation device system for an oil immersed electrical device. The insulating oil volume compensation device system comprises an electrical device body filled with insulating oil. An oil volume compensation device is arranged in a low position on the side face of the electrical device and connected with the electrical device through an oil way system. The oil volume compensation device is a volume expansion heat dissipation device. An insulating oil inlet and an insulating oil outlet which are communicated with the oil way system are formed in the volume expansion heat dissipation device. The oil volume compensation device is composed of a plurality of elastic elements and a shell arranged outside the elastic elements. According to the insulating oil volume compensation device system for the oil immersed electrical device, the external structure of the electrical device is greatly simplified, and space is saved; real fuel tank tight welding ...

On-line water level monitoring method and system for underground high-voltage power tunnel

The invention relates to an on-line water level monitoring method and an on-line water level monitoring system for an underground high-voltage power tunnel, and belongs to the technical field of power monitoring equipment. According to the technical scheme, the on-line water level monitoring system comprises an upper computer (1), one or more than one monitoring host unit (2), water level monitoring devices (3) and water level probes (14), wherein each monitoring host unit is connected with more than one water level monitoring device; each water level monitoring device is connected with more than one water level probe; the upper computer is connected with each monitoring host unit through a TCP/IP (transmission control protocol/internet protocol) Ethernet interface; each monitoring host unit is connected with the water level monitoring devices through a pair of low-smoke halogen-free flame-retarding communication cables. The on-line water level monitoring system for the underground high-voltage ...

Intelligent temperature control device for transformer

The invention relates to an intelligent temperature control device for a transformer and belongs to the technical field of transformer control equipment in the metallurgy industry. According to the technical scheme, sealing materials are arranged between a stainless steel gate (6) and a transformer room; the stainless steel gate (6) is provided with a transformer room peep hole (1); the top of the stainless steel gate (6) is provided with a first air suction draught fan (3) and a second air suction draught fan (5); the bottom of the stainless steel gate (6) is provided with a first air exhaust draught fan (2) and a second air exhaust draught fan (4); the air suction draught fan (3) and the second air suction draught fan (5) are arranged in symmetry with the air exhaust draught fan (2) and the second air exhaust draught fan (4); transformer windings of the transformer (10) is provided with temperature detecting elements; the temperature detecting elements are connected with a controller.

Tension control method of roller box type compact rolling mill for producing rod iron of large diameter

The invention relates to a tension control method in the metallurgical field, in particular to a rolling mill tension control method for producing a major-diameter coil rod by using a roll box-shaped compact type rolling mill. The control method comprises the following steps: adjusting rolling tension of rough and middle rolling mill units to the optimal state; recording a rolling current I1 of the rolling mill when a rolled piece passes through a No. 9 rolling mill and a No. 11 rolling mill of the middle rolling mill unit; recording a rolling current I2 of the No. 9 rolling mill or the No. 11 rolling mill again when the rolled piece is gripped into a No. 16 rolling mill of a CCR unit; comparing the rolling current I1 with the rolling current I2; improving the rotational speed of the No. 9 rolling mill or the No. 11 rolling mill to balance the tension when the rolling current I2 is less than the rolling current I1; and adjusting the telescoping amount of a loop according to the load current ...

Protection device for high-speed wire rod bundling wire twisting head

The utility model discloses a protection device and a method for a twisting head of a high-speed wire rod bundling wire, the protection device comprises a protection soft plate, an elastic connectingpiece and a flexible protection pad, and two ends of the protection soft plate are connected through the elastic connecting piece to form an annular protection belt; the number of the flexible protection pads is four, and the flexible protection pads are arranged on the outer surface of the protection soft plate. When the protective device is applied to protection of binding wire twisting heads, the protective belt is arranged on the outer surface of a wire rod below the twisting heads in a sleeving mode, and the four flexible protective pads are wound around and wrap the four twisting heads respectively. The protective device can effectively prevent the twisting head from scratching the steel wire rod in the bundling, transporting and storing processes. According to practical statistics,the ...

Method for predicting population in area near nuclear facility

The invention discloses a nuclear facility nearby area population prediction method, which comprises the following steps: acquiring population data of a nuclear facility nearby area to obtain population growth rate data in multiple modes, and predicting population prediction data in corresponding time periods by different population prediction models according to different population growth rate modes. Comparing to obtain a verification result, and determining a population prediction model and a population growth rate mode which can be used for the areas nearby the nuclear facilities; according to environmental evaluation characteristics of the nuclear facilities, the population growth characteristics of areas near the nuclear facilities are highlighted, population data obtained after the influence factors of multiple children are added are constructed, the population prediction calculation method flow in the survey range of the nuclear plant site is constructed, the number of people in ...