219results about How to "Fast forming" patented technology

The utility model relates to the technical field of injection molds, and provides a small household appliance display panel injection mold which comprises a production assembly, the production assembly comprises a base, guide rods, a supporting plate, a hydraulic rod, a dismounting structure, a lower mold base and a demolding structure, the supporting plate is arranged above the base, the guide rods penetrate through the corners of the supporting plate, and the hydraulic rod is arranged on the lower mold base. A hydraulic rod is fixed to the middle of the top end of the supporting plate, and a dismounting structure is fixed to the bottom end of the supporting plate. The demoulding structure is arranged, the electric telescopic rod is started, the electric telescopic rod drives the push rod to move towards the interior of the sliding groove, when the push rod moves, the end, with the inclined face, of the push rod abuts against the inclined face of the bottom end of the ejector block, the ejector block can be ejected upwards, and the ejector block can drive the ejector plate to move upwards to drive a product at the top end of the ejector plate to be loosened; and a product can be conveniently taken out, so that the device has a function of conveniently demolding, and the convenience and the working efficiency of the display panel injection mold during use are improved.

The invention discloses a coated titanium anode and an embedding preparation method thereof, and belongs to the technical field of coated titanium anodes, metal salt powder, an organic additive and inert filler are fully mixed to form embedding agent powder, the mass fraction of metal salt is 45-59%, the mass fraction of the organic additive is 1-5%, and the mass fraction of the inert filler is 40-50%; the sintering treatment is as follows: the pretreated titanium substrate is completely immersed in the embedding agent powder, the sintering temperature is 400-600 DEG C, the sintering time is 1-3 hours, and the heating rate is 5-10 DEG C / min. According to the method, low-temperature sintering is realized by precisely regulating and controlling the components and the proportion of the embedding medium and combining process parameters such as low-temperature sintering, and the damage to a titanium substrate is avoided; and meanwhile, the coating binding force of the titanium anode is improved, the service life of the titanium anode is prolonged, and technical innovation and industrial value are achieved.

The invention discloses a foamed polypropylene bead capable of being quickly formed by microwaves, the foamed polypropylene bead has a core-shell structure, a core layer material comprises high-melting-point high-modulus polypropylene, a shell layer material comprises a low-melting-point propylene copolymer and / or a polypropylene blend and a certain amount of a microwave heating aid, and the interior or surface of the foamed bead shell layer also contains a surfactant. The microwave heating aid can be rapidly heated under relatively low microwave heating power, so that the low-melting-point polypropylene material on the surface layer is rapidly melted and is fused and sintered with other surrounding foamed polypropylene bead shell layers, and the surface active agent can further improve the heating efficiency; the interior of the foamed polypropylene bead does not contain a microwave heating aid and a surfactant, low-power microwaves cannot enable the internal temperature of the foamed bead to rise too much, an original independent closed-pore structure can be kept, an obtained molded part is high in curing degree and good in surface sintering, the whole molding process is short in time and low in energy consumption, a large amount of cost is saved, and the method is suitable for large-scale production. The environment is protected.

The utility model provides a wallboard forming die which comprises a platen, a conveying table installed on the platen and used for placing a wallboard and a slotting mechanism arranged on one side of the platen and used for machining the wallboard, and a conveying assembly is installed in the conveying table in a lifting mode. The conveying assembly is installed on the conveying table in a lifting mode, the hydraulic cylinder controls the conveying frame to ascend so that the conveying rollers can stretch out through the lifting grooves, and therefore wallboards on the conveying table top can be conveyed, conveying equipment is externally connected, and automatic feeding and discharging can be achieved. When the wallboards are machined, the conveying frame descends and is arranged in the conveying table, the wallboards abut against the upper end of the conveying table and are fixed through the clamping assemblies, and the stability of placement of the wallboards is improved. The grooving piece moves vertically and transversely through the first displacement assembly and the second displacement assembly, the lifting assembly controls the grooving piece to be adjusted in a lifting mode so that the cutter die can abut against the wallboard for machining, automatic machining operation of the wallboard is achieved, and the wallboard can be rapidly formed.

The invention relates to the technical field of artificial stone processing, in particular to a forming press for artificial stone manufacturing, which comprises a mold main body and an equipment main body, the top of the mold main body is slidably connected with a clamping heat dissipation mechanism, the mold main body is used for forming artificial stones, the inner wall of the mold main body is provided with a fixing groove, and the inner wall of the fixing groove is fixedly connected with a limiting mechanism; in consideration of the situation that only a small number of small artificial stones need to be used in a construction site, too much waste is caused when large artificial stones are cut if special shapes are needed, the sizes of the artificial stones are usually difficult to control when the artificial stones are formed in the prior art, and if forming of specific sizes is needed, appropriate molds and pressing plates need to be selected firstly; in the artificial stone production process, complete forming can be achieved by waiting for solidification, equipment can conduct heat to the artificial stone in the forming process, the temperature of the artificial stone is increased, the forming speed of the artificial stone is slowed down due to temperature increase, and damage caused by excessive accumulated heat of the equipment can be possibly caused.

The utility model discloses a novel Guibi machine table mold, and relates to the technical field of sole mold processing. The forming mold comprises a bottom mold and a sole assembly, a mold groove is formed in the bottom mold, a head wrapping mold assembly is arranged at the top of the bottom mold, a side mold is arranged above the outer side of the bottom mold, a Guibi machine table mold frame is arranged at the top of the side mold, the head wrapping mold assembly comprises a movable insert and a clamp, and the movable insert and the clamp are arranged on the bottom mold. A reverse concave wrapping die groove is formed in the movable insert, a limiting die is arranged on one side of the top face of the bottom die, and the shape of a reverse concave wrapping die can be accurately formed through the wrapping die assembly and the common limiting effect of the reverse concave wrapping die groove and the limiting die. According to the design, it is ensured that the reverse concave wrapping head part in the shoe sole assembly can be accurately and rapidly formed, due to the detachability of the movable insert, the Guibi machine mold can meet the production requirements of molds with wrapping heads and molds without wrapping heads at the same time, and the universality and production efficiency of the mold are improved.

The invention discloses a method for manufacturing nickel-based superalloy by regulating and controlling laser additive materials through portable ultrasonic impact equipment, a nickel-based superalloy structure is obtained on a substrate according to the following steps on the substrate for at least one time, and the step comprises the steps that nickel-based superalloy powder is subjected to N times of laser melting deposition on the substrate to form N deposition layers, wherein N is equal to 1-10; and performing primary ultrasonic peening on the deposition layer on the substrate. The microhardness of the nickel-based superalloy prepared through the method is remarkably improved, the improvement rate ranges from 15% to 40%, and the method has the advantages of being convenient to use, low in cost, rapid in forming, easy to operate, capable of conducting machining treatment according to requirements, wide in application range and the like.

The invention relates to the technical field of costume fabric embossing, and discloses a costume fabric embossing device and an embossing method.The costume fabric embossing device comprises a bottom plate, a pressing table is fixedly installed at the top of the bottom plate, roller frames are fixedly installed at the four ends of the bottom of the bottom plate, and a driven roller and a driving roller are rotatably installed on the inner sides of the roller frames; a lifting device is fixedly installed on the rear side of the middle of the top of the bottom plate, a lifting block is slidably installed in the middle of the lifting device, two third moving blocks are far away from each other, at the moment, a pair of suction cups on the two sides suck the fabric to move in the direction away from each other, the fabric is vertically straightened, and after the fabric is vertically straightened, the fabric is fixed to the bottom of the bottom plate. Then, a fourth motor is started to drive two fourth lead screws to rotate, then fourth moving blocks on the two sides are controlled to drive suction cups at the bottoms to move away from each other so as to transversely straighten the fabric, the fabric straightened vertically and then transversely is stretched at the moment, and therefore the situation that the fabric is rolled up in an embossing area is effectively relieved; therefore, the embossing quality is improved.

The present invention discloses a multi-layer structure high temperature resistant heat insulating composite material and a preparation method thereof, belonging to the technical field of thermal protection materials. The multi-layer structure high temperature resistant heat insulating composite material includes, from top to bottom, a high-density ceramic composite material layer, a fiber felt reinforced ceramic composite material layer, an aerogel heat insulating composite material layer and a resin-based composite material layer. The upper panel of the multi-layer structure high temperature resistant heat insulating composite material has excellent high temperature resistance and ablation resistance, and the lower panel has excellent bonding performance. Each layer structure can give full play to its own performance advantages, and has broad application prospects in the fields of aerospace and the like. In addition, its preparation process is simple, the cycle is short, and the cost is low, which is conducive to mass production.

The utility model discloses an integrated guide rail type die special for an upper cover plate and a lower cover plate. Comprising a handle support, an upper pressing plate arranged at the bottom of the handle support and connected with the handle support, a grooving device arranged at the bottom of the upper pressing plate, an elastic pressing plate arranged on one side of the grooving device through an elastic device, and a mold pressing plate arranged on a fixed base corresponding to the grooving device. The multifunctional cover plate mold machining device is formed, the working efficiency is improved, and the use cost is reduced.

The utility model relates to the technical field of smelting equipment, in particular to a sintering kiln which comprises a base. The kiln main body is installed on the base, an exhaust assembly is arranged at the top of the kiln main body, and the exhaust assembly is used for exhausting waste gas exhausted when the kiln works; the cooling assembly is installed on the base, the air inlet end of the cooling assembly is connected with the exhaust assembly, and the cooling assembly is used for cooling the waste gas; the filtering assembly is installed at the top of the cooling assembly, and the filtering assembly is connected with the air outlet end of the cooling assembly; the air inlet end and the air outlet end of the cooling assembly are each provided with a sealing assembly. The glass melting furnace has the beneficial effects that the forming speed of glass melting liquid is increased, meanwhile, high-temperature waste gas can be cooled, and the utilization of heat is improved.

The invention discloses a casting forming mold for planetary flange casting machining, and belongs to the technical field of flange casting molds, the casting forming mold comprises a working plate and a cooling water pipe, the upper surface of the working plate is fixedly connected with a lower mold, and the upper surface of the lower mold is movably provided with an upper mold; the cooling device further comprises a connecting pipe, the connecting pipe is fixedly connected into the cooling box, and the connecting pipe can be connected with the tail end of the cooling water pipe by being connected with an external hose in a threaded mode; and the limiting rod is fixedly connected to the inner wall of the lower die. When the casting forming mold for machining the planetary flange casting is used, molten metal is poured into the lower mold, the upper mold is covered for forming, after forming, the upper mold is taken down, the long pin rotates at the moment, then the movable plate drives the knocking rod to do reciprocating rectilinear motion in the horizontal direction, the knocking rod can knock the outer wall of the lower mold again and again, the lower mold is made to vibrate, and the casting forming mold is used for machining the planetary flange casting. And an auxiliary discharging effect is achieved, an operator can take out the workpiece conveniently, and the working efficiency is improved.

The invention belongs to the technical field of biology, and particularly relates to a small molecule peptide composition and method for regulating natural calculus bovis production. The small molecule peptide aiming at a key target spot is designed by deeply researching secretion and metabolism of ox bile. The action mechanism covers biliary secretion stimulation, component optimization, bezoar key enzyme activity promotion and immune response regulation. A chemical synthesis or biotechnology means is adopted for preparation, and the dosage is determined according to cattle conditions during application. The safety is strictly evaluated, the yield of the natural calculus bovis can be obviously improved by 65%, the quality is also greatly improved, the effective components are increased, the impurities are reduced, the drug effect is enhanced, a new efficient and safe way is opened up for the production of the natural calculus bovis, and the method has a wide application prospect.

The invention provides a novel resin-based silicon carbide / graphite / nickel composite wave-absorbing material and a preparation method thereof. The silicon carbide / graphite / nickel composite wave-absorbing material is prepared. The preparation method comprises the following steps: firstly, weighing graphite powder, silicon carbide powder, mullite powder and phenolic resin liquid in proportion, putting into a powder mixer in batches, uniformly mixing, taking out, drying, crushing and sieving to obtain mixed powder; secondly, preparing a graphite prototype model by using a selective laser sintering molding technology, and carrying out secondary curing to obtain a porous graphite preform; and impregnating epoxy resin liquid containing high-purity nickel powder into the porous graphite prefabricated body by using a vacuum pressure impregnation technology, and taking out the porous graphite prefabricated body for cross-linking and curing to obtain the novel resin-based silicon carbide / graphite / nickel composite wave-absorbing material. The preparation method of the resin-based silicon carbide / graphite / nickel composite wave-absorbing material is short in technological process and low in cost, controllable compounding of multiple wave-absorbing agents can be rapidly achieved, and the wave-absorbing agents are assembled into a three-dimensional micro-network structure; the method can be applied to the field of high-frequency electromagnetic wave absorption.

The invention belongs to the technical field of pipe fitting processing and forming, particularly relates to pipe fitting casting and forming equipment and a casting and forming method, and provides the following scheme aiming at the problems that a mold cannot be fully and uniformly filled with existing slurry, the efficiency of manual coating of a release agent is low, the phenomenon of coating leakage exists, and meanwhile pipe fitting forming consumes time. Comprising a base, a U-shaped frame is fixed to the top of the base, a rotating column is rotationally connected between the top of the base and the inner wall of the top of the U-shaped frame, the outer wall of the rotating column is fixedly sleeved with a rotating base rotationally arranged at the top of the base, a plurality of round holes are formed in the top of the rotating base, and a first motor is fixed in the base. The inner mold rotates relative to the outer mold, then slurry can be evenly poured into the pouring cavity, the hollow phenomenon is avoided, the slurry in the pouring cavity is heated through the inclined holes in the later period, and the forming speed of the slurry is increased.

The invention provides a laser wire powder cooperation and electric arc composite additive manufacturing device and method.The laser wire powder cooperation and electric arc composite additive manufacturing device comprises a plurality of printing areas, connecting areas and a printing module, the multiple printing areas are continuously arranged, each connecting area is arranged between every two adjacent printing areas, and each connecting area is provided with a plurality of first connecting areas and second connecting areas; the corresponding first connecting areas and second connecting areas are arranged in an overlapping manner; the printing modules and the printing area are oppositely arranged, the printing modules move along a preset printing path and print and form the metal component, the preset printing path passes through the printing area and the first connecting area or the printing area and the second connecting area, one-time forming of the metal structural component is achieved, additive connection and performance weak areas are avoided, and the product quality is improved. The connecting strength of the metal component is enhanced, and the forming efficiency is improved.

A straw seedling raising board production line relates to the technical field of seedling raising board equipment. It solves the problem that the existing seedling raising materials have poor water retention and fertilizer retention, which leads to soil compaction and sewage discharge. The present invention is composed of straw feeding and conveying, spiral-driven horizontal constant steaming, straw fiber grinding, drying, straw fiber and auxiliary material metering, stirring, paving, board loading, hot pressing, board unloading, seedling raising board and pad separation stacking, seedling raising board vertical and horizontal cutting counting stacking and packaging equipment. The present invention adopts a PLC full-automatic control system, which has the advantages of ingenious design, fast product molding, reduced manpower consumption, large production capacity, high production efficiency, and the product is beneficial to the fertilizer and water retention during the seedling raising period, and can cultivate excellent seedlings.

The device comprises a base, a lower test mold, a mounting rack, a fixing plate, a hydraulic cylinder, a connecting piece and an upper test mold, the lower test mold is fixedly mounted on the upper surface of the base, the mounting rack is fixedly mounted on the upper surface of the base, the fixing plate is fixedly mounted on the top of the mounting rack, the hydraulic cylinder is fixedly mounted in the middle of the fixing plate, and the connecting piece is fixedly mounted on the upper surface of the fixing plate. The connecting piece is fixedly installed on an output shaft of the hydraulic cylinder, the upper test mold is fixedly installed at the bottom of the connecting piece, the lower test mold and the upper test mold are provided with a fullness measuring assembly, the base and the lower test mold are internally provided with a temperature change assembly, and the mounting frame is provided with a vibration assembly. By means of the fullness measuring assembly, bubbles in a grouting area formed by the outer steel ring and the inner steel ring can be avoided, pressure in grout can be increased, air in the grout can be extruded out, a joint is more stable after the grout is solidified, and the problem that the test structure is not accurate enough due to the fact that the bubbles affect the joint strength is avoided.

The utility model relates to a liquid silica gel thinning machine which comprises a fixed table, a lifting plate is arranged above the fixed table, movable plates are symmetrically arranged at the bottom of the fixed table and the bottom of the lifting plate in a sliding mode, a lower silica gel mold is arranged on the fixed table, and an upper silica gel mold is arranged at the bottom of the lifting plate. A heat preservation box is fixedly arranged on the rear side of the fixed table, an electric heater is fixedly arranged on the side wall of the heat preservation box, a stirring rod is rotatably arranged in an inner cavity of the heat preservation box, a cooling water tank is fixedly arranged in an inner cavity of the fixed table, and the cooling water tank is connected with a fixed table top plate and a lifting plate through guide pipes. The silica gel mold can be positioned and fixed through the movable plate, different molds can be conveniently replaced, liquid silica gel is temporarily stored in the heat preservation box with the high temperature, the situation that the liquid silica gel is cooled is prevented, the silica gel can be rapidly cooled through cooling water after being formed, and the practicability of the silica gel mold is improved.

The invention provides an engine medicine baffle assembly and a preparation process, the engine medicine baffle assembly comprises a metal base, the metal base is provided with a medicine baffle buffer layer, and the medicine baffle buffer layer is prepared from the following raw materials: liquid silicone rubber, a flexibilizer, silica powder, zirconium boride, carbon fibers, quartz fibers and polyimide fibers. According to the process, integrated compression molding of the medicine baffle assembly of the engine is achieved through a special mold. The invention provides the silicone rubber-based explosive baffle assembly with good comprehensive performance and mold pressing fluidity, and reliable support for the explosive column and the ignition device can be realized. According to the engine medicine baffle assembly, the problems that in the prior art, when a medicine baffle buffer layer is made of organic materials such as polyurethane and ethylene propylene diene monomer or inorganic coatings such as silicate and zirconium oxide, the steps are tedious, the material performance cannot meet the requirement, or the cost is high are effectively solved.

The invention belongs to the technical field of plastic granulation, and in particular to an environmentally friendly flame-retardant nylon engineering plastic granulation device, comprising a plastic heating extruder, wherein a cutting and molding component is arranged at the discharge end of the plastic heating extruder, and the cutting and molding component comprises a shell cover arranged at the discharge end of the plastic heating extruder; the extruded plastic can be conveniently cut, and the cut plastic particles can be cooled and dissipated at the same time, so as to facilitate the rapid molding of the plastic particles, and the molded plastic particles can be quickly discharged in coordination with an inclined guide plate in an inclined and shaking state, so as to facilitate the rapid replacement of an extrusion mold of a required size according to actual use needs, adjust the size of the produced plastic particles, improve the use range of the equipment, facilitate the scraping of plastic residues attached to the surface of the cutter, and avoid the high-temperature extruded plastic from adhering to the surface of the cutter to affect the cutting quality of the cutter, thereby improving the quality of the product.

This application relates to the field of electrocatalytic carbon dioxide reduction and discloses a method for preparing a nickel hollow fiber membrane, comprising the following steps: S1, preparation of casting solution; S2, spinning and film formation: the casting solution is extruded into a tap water bath at a certain speed through spinning extrusion molding, while water is injected into the hollow fiber at a constant speed with gas, causing a phase change between the extruded fiber and water, and then the extruded fiber is soaked in tap water overnight; S3, sintering: oxygen or air is first introduced into a tube furnace for oxidation, and then reduction is carried out under a hydrogen atmosphere to obtain a complete metal hollow fiber membrane. By applying pure nickel hollow fiber to the field of electrocatalytic carbon dioxide reduction, compared with other gas diffusion electrodes, nickel hollow fiber, as a self-supporting gas diffusion electrode, does not require the use of binders such as Nafion solution, and compared with precious metals such as gold, silver, and copper, which are excellent for carbon dioxide reduction, nickel is inexpensive and suitable for large-scale use.

The utility model discloses a mobile phone middle plate die-casting die feeding sprue structure which comprises a lower fixing plate and a placing block, the placing block is installed at the top end of the lower fixing plate, a movable die sleeve plate is installed at the top end of the placing block, an upper fixing plate is arranged outside the movable die sleeve plate, a sprue sleeve is installed at the top end of the upper fixing plate, and a movable die sleeve is installed at the top end of the sprue sleeve. A sprue bush is installed on the upper fixing plate and extends out of the upper fixing plate, a clamping base is installed at the position, on one side of the sprue bush, of the top end of the upper fixing plate, first air cylinders are symmetrically and movably installed on the outer wall of the clamping base, telescopic rods are installed at the output ends of the first air cylinders correspondingly, and a supporting base is installed on the position, on one side of each first air cylinder, of the outer wall of the clamping base. According to the die-casting die, the feeding sprue structure can be conveniently shielded and protected by the die-casting die, the safety of the feeding sprue is improved, rapid forming and demolding of a product are facilitated, dirt is prevented from entering the die-casting die through the feeding sprue, and the probability of defective products is reduced.

The invention relates to the technical field of railway vehicles, and provides a bogie frame, a bogie and a railway vehicle. The truck frame includes a load bearing body and two leaf springs. The bearing main body comprises two oppositely arranged C-shaped beams and two oppositely arranged wing-shaped beams arranged between the two C-shaped beams, the two wing-shaped beams are respectively provided with a mounting channel, the two C-shaped beams and the two wing-shaped beams are respectively and integrally cast and molded, and the two C-shaped beams and the two wing-shaped beams are integrally cast and molded. The two C-shaped beams and the two wing-shaped beams are suitable for being connected in a welded mode, and the two C-shaped beams and the two wing-shaped beams jointly define a center pin channel used for installing a center pin. The two plate springs are installed on the two installation channels respectively, the plate springs extend in the longitudinal direction of the bearing body, and the two ends of each plate spring are provided with cushion blocks used for being connected with a wheel pair shaft sleeve respectively. A high strength-to-mass ratio is achieved, the welding seam proportion is reduced to a low level, and the welding seam is made to be away from a high-stress area.

The present invention discloses an electrically assisted preparation method for a space-bending thin-walled structural part with continuous large-area array micro-grooves of a difficult-to-deform material, and specifically relates to a micro-groove roll forming method for difficult-to-deform materials such as titanium alloy, high-strength aluminum alloy, and high-temperature alloy foil. The method comprises the following steps: passing a pulse current with variable electrical parameters into the difficult-to-deform metal foil, giving a micro-groove forming depth h, and maintaining the spatial difference distribution T of the temperature field on the surface of the sample through a temperature feedback adjustment system and a heat dissipation unit auxiliary means. 0 、T 1 ,…T i …T n‑1 、T n , so that the radius of curvature of the micro-grooves on the foil surface after rebound is differentially distributed along the width direction, and the motor-driven continuous rolling forming can obtain a spatially curved thin-walled structural part with a continuous large-area array of micro-grooves.

The utility model relates to a pipe extrusion die, which belongs to the technical field of extrusion dies and comprises an extrusion die body, a feed inlet fixedly communicated with the top of the extrusion die body and a base arranged at the bottom of the extrusion die body. The lower surface of the extrusion die body is provided with a core rod positioning mechanism which extends into the extrusion die body and is used for adjusting the position of the core rod assembly, and the outer portion of the extrusion die body is provided with a turnover mechanism used for conducting turnover adjustment on the extrusion die body. According to the pipe extrusion die, the reciprocating motor is started to work through the controller, the output shaft of the reciprocating motor rotates to drive the threaded rod to rotate, and the threaded block can stably and accurately move along the threaded rod, so that the position of the core rod is accurately adjusted, and the position of the core rod can be accurately controlled according to different stages of pipe production; and the stability of the production environment is ensured through accurate core rod positioning and uniform pipe forming, and the advantage of high extrusion precision is achieved.

This invention relates to a method for preparing an ultrafiltration membrane based on spray-deposited block copolymer nanofibers, comprising: dispersing block copolymer nanofibers with a diameter of 15-30 nm and a length of 500-2000 nm in a solvent to prepare a block copolymer nanofiber solution with a mass percentage concentration of 0.075-0.75%; uniformly spraying the obtained block copolymer nanofiber solution onto the surface of a microfiltration substrate membrane, controlling the spraying amount of the block copolymer nanofiber solution to be 0.025-0.08 mL / cm². 2 A composite ultrafiltration membrane is obtained. The membrane fabrication method provided by this invention is simple, easy to implement, clean, and efficient. Furthermore, the pore size and thickness of the separation layer of the obtained ultrafiltration membrane are adjustable, and the flux can be adjusted within a certain range.

The invention relates to the field of flux-cored wires, in particular to an electric-arc welding flux-cored wire based on C4 steel and a preparation method of the electric-arc welding flux-cored wire, and aims to solve the problems that an existing electric-arc welding flux-cored wire for the C4 steel is often unstable in welding quality, so that the strength of a welded joint is insufficient, and the corrosion resistance is poor. According to the preparation method, the fluorine-doped graphene aerogel serves as an important component of the arc welding flux-cored wire, so that the pore defect rate and the crack generation probability in the welding process can be effectively reduced, and the tensile strength and toughness of a welding area can be remarkably improved; according to the electric-arc welding flux-cored wire, the welded C4 steel part has more excellent mechanical performance and corrosion resistance, the overall quality of a welding area is improved, the overall fatigue life of the structure is prolonged, the damage resistance of the structure is improved, the electric-arc welding flux-cored wire is suitable for various welding technologies, the requirements under different welding conditions can be met, the technology is simple, operation is easy, and popularization is easy. The method is suitable for large-scale production.

The invention relates to the technical field of die design and application, in particular to a method for manufacturing a U-shaped part through an upper bearing arm forging and bending die, which comprises the following steps: S1, die design and forming: rough forming of the die and finish machining of the die, and S2, U-shaped part machining: raw material preparation, roll forging, bending and forging, and the U-shaped part is manufactured through the steps. According to the U-shaped part forming die, the two bending dies are arranged, and raw materials can be rapidly bent and forged twice through the two bending dies, so that a U-shaped part product can be rapidly formed, the production efficiency is improved, the product quality is guaranteed, and the large-scale production level is improved; according to the method, the structure design of the bending die is carried out by utilizing the difference value of the surface areas, the structure design of the bending die can be accurately carried out, the adaptability of the bending die and the U-shaped piece is improved, and the product quality is improved.

The W5Si3-WSi2 / WC composite material comprises the following components in parts by weight: a W5Si3 intermetallic compound and a WSi2 intermetallic compound are used as reinforcing and toughening phases; wC is used as a matrix; al2O3 powder; y2O3 powder; a phenolic resin binder; the spark plasma sintering preparation method comprises the following steps: step 1, preparing W-Si intermetallic compound powder A; secondly, the W-Si intermetallic compound powder A is subjected to heat treatment, and then W5Si3 intermetallic compound powder is obtained; step 3, preparing W-Si intermetallic compound powder B; 4, the W-Si intermetallic compound powder B is subjected to a heat treatment process, and WSi2 intermetallic compound powder is obtained; fifthly, W5Si3-WSi2 / WC composite powder is prepared; step 6, preparing a W5Si3-WSi2 / WC composite powder prefabricated blank wafer sample; step 7, putting the W5Si3-WSi2 / WC composite powder prefabricated blank wafer sample into a discharge plasma sintering furnace, and carrying out vacuum discharge plasma sintering on the W5Si3-WSi2 / WC composite powder prefabricated blank wafer sample; the W5Si3-WSi2 / WC composite material has the advantages of high preparation efficiency and simple process, and the W5Si3-WSi2 / WC composite material has high density and high mechanical properties.