397 results about "Titanium powder" patented technology

The invention discloses a high-wear-resistance tungsten carbide alloy and a preparation method thereof, and belongs to the technical field of tungsten carbide alloys. According to the high-wear-resistance tungsten carbide alloy, spherical hard particles are evenly distributed in a matrix, the mass percent of the hard particles is 80 wt.%-90 wt.%, and the mass percent of the matrix is 10 wt.%-20 wt.%; the hard particles comprise the following components in percentage by mass: 75 to 80 weight percent of composite tungsten carbide particles, 5 to 10 weight percent of cobalt powder, 2 to 3 weight percent of titanium powder, 2 to 3 weight percent of zirconium powder, 0.5 to 1 weight percent of rare earth oxide and 5 to 10 weight percent of nano carbon black. By adopting the wear-resistant tungsten carbide alloy and the preparation method thereof, the problem that the wear resistance of the tungsten carbide alloy is affected due to the fact that the hardness and the toughness of the existing tungsten carbide alloy cannot be synergistically enhanced can be solved.

The invention relates to the technical field of metal materials, and discloses a composite metal material based on micro-nano porous copper powder, which is composed of the following components: a matrix is micro-nano porous copper powder with the particle size of 50-500 nanometers, the porosity is 30-80%, and the pore diameter is 20-200 nanometers; the metal additive comprises 5-20 wt% of aluminum powder and 3-15 wt% of nickel powder; the functional additive comprises 1 to 8 weight percent of titanium powder, 0.5 to 5 weight percent of graphene and 0.3 to 3 weight percent of a carbon nano tube; a nickel-titanium alloy coating with the thickness of 50-500 nanometers is formed on the surface of the micro-nano porous copper powder through electrochemical deposition. Through the graded hole design of the micro-nano porous copper powder, a main hole channel provides a rapid electron transmission path, the powder gap stress is eliminated in the low-temperature pre-pressing stage, and atom diffusion and densification are promoted in the high-temperature and high-pressure stage, so that the resistance can be effectively reduced, the loss of energy in the transmission process is reduced, and the energy transmission efficiency of the whole system is improved.

The invention provides a high-wear-resistance and low-dilution gas shielded welding wire and a preparation method thereof, and belongs to the technical field of welding wire manufacturing. The welding wire consists of the following raw materials in parts by weight: 45-52 parts of iron; 18-22 parts by weight of an electrolytic nickel plate; 6-8 parts by weight of high-purity molybdenum powder; 4-6 parts by weight of nano tungsten powder; 3-4.5 parts by weight of a vanadium nitride alloy; 1.2 to 1.8 parts by weight of a niobium-iron alloy; 0.8-1.5 parts by weight of aluminum magnesium alloy powder; 0.3 to 0.6 part by weight of lanthanum cerium mixed rare earth; 0.15 to 0.25 part by weight of ferroboron alloy; 0.5 to 0.8 part by weight of metal silicon powder; 0.2 to 0.4 part by weight of a magnesium-calcium alloy; and 0.1-0.3 part by weight of titanium hydride powder. The hard framework is formed through gradient distribution of carbides such as molybdenum, tungsten and vanadium, the wear-resisting life is remarkably prolonged, melting mixing of base metal is reduced through the nickel-based alloy, the consistency of deposited metal components is ensured, free hydrogen is fixed through hydrogen trap phases such as titanium and niobium, and a moisture absorption path is blocked in combination with a surface passivation film.

The invention discloses high-strength stainless steel for a wheel hub cover and a machining process of the high-strength stainless steel, and relates to the technical field of stainless steel machining. The specific processing technology comprises the following steps: weighing a stainless steel raw material, smelting under nitrogen pressurization, carrying out protective pouring to obtain a cast ingot, carrying out hot forging and hot rolling to obtain a hot-rolled plate, carrying out solution treatment and water quenching, sequentially carrying out multi-pass cold rolling and single-pass liquid nitrogen heat preservation cold rolling, annealing and aging treatment to obtain a stainless steel base material, and sequentially carrying out grinding, polishing, oil removal and acid activation to obtain the stainless steel plate. And then placing in an electroplating solution for electro-deposition of an alloy plating layer, cleaning after electro-deposition is finished, then carrying out laser cladding, finally carrying out heat treatment, and cutting a thin layer to obtain the high-strength stainless steel. Wherein cladding powder adopted for laser cladding comprises cobalt powder, chromium powder, nickel powder, aluminum powder, molybdenum powder, titanium powder, zirconium powder, nano carbon-nitrogen metal and tungsten carbide.

The invention discloses a copper-based friction plate of a wind power high-speed shaft brake and a manufacturing method, the friction plate comprises a friction material, the friction material comprises a friction layer and a friction layer, the friction layer comprises the following raw materials in percentage by weight: 65-72% of copper powder, 1-6% of iron powder, 3-10% of high-carbon ferrochrome powder, 8-15% of copper-tin-titanium powder and 15-20% of graphite powder; 1 to 5% of TiB2; and the transition layer comprises the following raw materials in percentage by weight: 70-75.4% of iron powder, 23-28% of copper powder, 1-3% of graphite powder and 0.6-1.2% of copper welding powder. The friction plate in the technical scheme is low in cost, does not contain harmful elements such as lead, meets the environmental protection requirement, integrates the advantages of a copper-based friction plate and an iron-based friction plate, has a stable friction factor and good wear resistance, and has the friction performance superior to that of an imported friction plate.

The invention discloses a titanium fibrofelt composite material and a PEM electrolytic tank containing the titanium fibrofelt composite material, and relates to the technical field of PEM electrolytic tanks. The titanium powder mixture is filled in the titanium fibrofelt base material on one side of the second surface of the titanium fibrofelt base material, and the particle size of the first titanium powder, the particle size of the second titanium powder, the mass ratio of the first titanium powder to the second titanium powder, and the porosity and the average pore size of the titanium fibrofelt base material are controlled to be within a proper range; the titanium fibrofelt composite material has the advantages that the titanium fibrofelt base material can be well filled with the titanium powder, and a pore structure with proper pore diameter and pore diameter distribution can be formed in the titanium fibrofelt base material, so that when the titanium fibrofelt composite material is used as an anode gas diffusion layer of a PEM electrolytic tank, the cooperative transmission effect of water and oxygen is good, the mass transfer loss in the operation process of the electrolytic tank is low, and the service life of the electrolytic tank is prolonged. The internal temperature of the electrolytic tank is easy to control.

The invention discloses an anode porous transmission layer for PEM water electrolysis hydrogen production and a preparation method of the anode porous transmission layer. The preparation method comprises the steps that firstly, a porous titanium plate and a titanium mesh are washed and dried after being subjected to acid pickling; secondly, absolute ethyl alcohol, polyvinyl butyral and titanium powder are evenly mixed to be prepared into slurry, and the slurry is sprayed to the two sides of the dried titanium mesh; and 3, stacking the porous titanium plate and the titanium mesh sprayed with the slurry, and forming metallurgical bonding through vacuum diffusion welding to obtain the anode porous transmission layer. The porous titanium plate and the titanium mesh are metallurgically bonded to prepare the anode porous transmission layer, the platinum plating amount is effectively reduced and the catalyst utilization rate is improved by regulating and controlling the thickness and the pore structure of the porous titanium plate and the plate-mesh stacking mode, and the gas-liquid transmission efficiency of the anode porous transmission layer is improved; and the anode porous transmission layer with strong mechanical support and high gas-liquid transmission efficiency is obtained, is suitable for PEM water electrolysis hydrogen production, and meets the development requirements of high efficiency and low cost of hydrogen production through renewable energy source and PEM water electrolysis coupling.

The invention discloses a gas diffusion layer with a gradient pore structure and a preparation method of the gas diffusion layer. The preparation method comprises the following steps: 1, immersing a titanium diamond net into liquid paraffin; 2, absolute ethyl alcohol, tributyl phosphate, polyvinyl butyral and two kinds of spherical titanium powder with different granularities are evenly mixed to prepare second slurry containing coarse-grained spherical titanium powder and first slurry containing fine-grained spherical titanium powder, and the second slurry and the first slurry are sequentially sprayed to the surface of the titanium rhombus net filled with paraffin; and 3, degreasing and sintering the sprayed titanium diamond net for one-step forming to obtain the gas diffusion layer with the gradient pore structure. According to the method, the slurry containing the spherical titanium powder with the coarse granularity and the spherical titanium powder with the fine granularity is sequentially sprayed on the titanium diamond net and sintered, the gas diffusion layer with the gradient hole structure is obtained, it is guaranteed that the gas diffusion layer has the high catalyst utilization rate, high mechanical strength and good gas-liquid transmission, and the structure can be adjusted according to the actual working condition so as to regulate and control the performance of the gas diffusion layer; the method is suitable for the field of PEM electrolytic hydrogen production.

The invention relates to a preparation method of a titanium-based composite material based on high-entropy boride ceramic modification, and belongs to the technical field of titanium-based composite material powder metallurgy. The high-entropy boride ceramic is (ZrHfTaTi) B2 in an equal molar ratio. The preparation method comprises the following steps that firstly, high-entropy boride ceramic powder and pure titanium powder are evenly mixed through ball-milling mixing, then the mixed powder is subjected to rapid hot pressing sintering, a sintered block is subjected to hot rolling treatment, and finally the titanium-based composite material is obtained. The composite material has excellent room-temperature and high-temperature comprehensive mechanical properties, the performance is greatly improved compared with commercial pure titanium, and the composite material can be used for manufacturing high-performance parts in the fields of aerospace and the like.

The invention discloses a solder for a copper-clad ceramic substrate. The solder comprises mixed metal powder and an organic carrier, the mixed metal powder is composed of Cu powder, titanium powder, nickel powder and nano CeO2; the organic carrier is prepared from the following components in percentage by weight: 2 to 5 weight percent of organic thickening agent, 3 to 18 weight percent of organic mixed solvent and 0.2 to 3 weight percent of degreasing accelerant; the solder is formed by mixing mixed metal powder and an organic carrier according to the mass ratio of 85: 15-90: 10. An existing soldering paste formula is optimized, the degreasing accelerant is added, the degreasing capacity of the soldering paste is improved, and the porosity after brazing is reduced.

The invention provides a binder system for beryllium-titanium alloy powder injection molding and application, and relates to the technical field of metal powder injection molding. The adhesive system consists of the following components in percentage by weight: 76 to 84 percent of polyformaldehyde, 7 to 9 percent of high-density polyethylene, 5 to 7 percent of ethylene-vinyl acetate copolymer, 3 to 5 percent of paraffin, 0.1 to 0.5 percent of stearic acid, 0.1 to 1.5 percent of polyethylene glycol and 0.1 to 1 percent of BASF antioxidant. The feed preparation method based on the system comprises the steps of powder pretreatment, binder preparation, banburying mixing and cooling granulation, and uniform coating and dispersion of beryllium-titanium powder can be achieved. According to the system, the problems that in beryllium-titanium alloy injection molding, powder is prone to oxidation, poor in fluidity and low in size precision are solved, the viscosity of the prepared feed at 180 DEG C is 88-101 Pa.S, and the oxygen content is smaller than or equal to 0.24 wt%; the relative density of a finished product is larger than or equal to 96.5%, the size precision is + / -1% / in-+ / -2% / in, and the method is suitable for industrial production of beryllium-titanium alloy complex parts in the fields of spaceflight and nuclear energy.

The invention discloses an oxygen control process for injection-molded titanium alloy based on oxygen-free solvent degreasing, which belongs to the technical field of powder metallurgy materials and comprises the following steps of: banburying and cooling pre-alloyed titanium powder and a binder matrix, granulating and injection-molding, and degreasing, drying and sintering by using an oxygen-free solvent. According to the method, a full-process oxygen control process chain of vacuum pre-drying of pre-alloyed titanium powder, preparation of an oxygen-free binder, extraction and degreasing of an oxygen-free solvent, vacuum thermal degreasing and graphite furnace temperature control sintering is constructed, invasion of impurity elements such as carbon, oxygen and nitrogen is blocked from the source to a finished product, and the core bottleneck that the oxygen content of the powder metallurgy titanium alloy is difficult to control is solved; and the consistency of the strength and plasticity of the product is guaranteed through stable impurity control, and performance fluctuation caused by out-of-control of the oxygen content is avoided.

The invention relates to a high-heat-resistance PPS protective material and a preparation process thereof. The protection material is prepared from the following components in parts by weight: PPS resin, modified glass fiber, surface modified boron nitride, element doped modified silicon carbide, an ABS-g-MAH and POE-g-MAH compound, nano aluminum oxide, an antioxidant, an interface modifier and a synergistic stabilizer in a specific proportion. Wherein the modified glass fiber is prepared by reacting glass fiber with an ethanol solution, potassium hydroxide and the like; the surface modified boron nitride is obtained by treating nano boron nitride, a sodium hydroxide solution and the like; the element-doped modified silicon carbide is prepared by reacting silicon carbide powder with nano titanium powder and the like. The preparation process sequentially comprises the following steps: carrying out ultrasonic pretreatment and vacuum drying to obtain a mixture 1, mixing by a high-speed mixer to obtain a mixture 2, carrying out extrusion granulation and vacuum devolatilization by a twin-screw extruder, carrying out water-cooling granulation, drying to obtain granules, preparing a standard sample through injection molding, testing the performance and the like, wherein each step has corresponding specific parameters. The material has high heat resistance, the heat distortion temperature can reach 280 DEG C or above, and the material can be used as a protection material in the field needing high heat resistance.

The invention belongs to the technical field of proton exchange membrane electrolytic cells, and particularly relates to a microporous titanium-based diffusion layer for a proton exchange membrane electrolytic cell and a preparation method of the microporous titanium-based diffusion layer. The preparation method comprises the following steps: mixing titanium powder, a binder and a solvent, coating a titanium-based substrate with the mixture, and carrying out degumming and sintering to obtain the microporous titanium-based diffusion layer for the proton exchange membrane electrolytic cell. By adopting the method disclosed by the invention, the surface structure of the gas diffusion layer of the titanium-based substrate can be optimized in batches, so that the purposes of reducing roughness, increasing the contact area with a membrane electrode, reducing contact resistance, increasing mass transfer efficiency and improving the electrochemical performance of an electrolytic tank in an electrolytic bath are achieved; the technical defects of a gas diffusion layer obtained by a preparation method in the prior art are overcome.

The invention relates to a preparation method of a double-layer high-temperature adhesive for connecting brass and aluminum oxide, which comprises the following steps: reacting aluminum hydroxide, zirconium hydroxide and dilute phosphoric acid to prepare an aluminum zirconium phosphate adhesive base solution, and compounding silicon powder, boron carbide, titanium powder, nickel powder and the adhesive base solution to prepare a special adhesive for coating a brass surface. And compounding silicon powder, boron carbide, titanium powder, nickel powder, aluminum oxide and the gum base solution to prepare the special adhesive for aluminum oxide surface coating. The brass surface coating special glue is brushed on the brass surface and cured, then the aluminum oxide surface coating special glue is brushed on the aluminum oxide surface, the brass coated with the adhesive and the aluminum oxide coated with the adhesive are attached together in the mode that the bonding surfaces are opposite, and the brass / aluminum oxide double-layer bonding piece is obtained after pressing and curing and can serve in the high-temperature environment. The method has the advantages that the special glue for brass surface coating and the special glue for aluminum oxide surface coating have high thermal expansion coefficient matching with brass and aluminum oxide, and thermal stress can be relieved; the double-layer adhesive can provide the bonding strength which can reach 1.3 MPa at the temperature of 500 DEG C.

The invention relates to a preparation method of a molybdenum-titanium alloy target material, which comprises the following steps: mixing molybdenum powder and titanium powder in a protective gas atmosphere to obtain mixed powder; the mixed powder is subjected to cold isostatic pressing, sheath degassing, hot isostatic pressing and vacuum annealing in sequence, and then the molybdenum-titanium alloy target material is obtained; the average particle size of the molybdenum powder is 3-5 [mu] m, and the average particle size of the titanium powder is 100-150 [mu] m; according to the preparation method, the molybdenum-titanium alloy target material which only contains a pure molybdenum phase and a molybdenum-titanium alloy phase and is high in density and low in content of gas impurity elements is prepared by selecting raw materials with specific particle sizes and matching specific procedures; wherein the proportion of the molybdenum-titanium alloy phase is preferably as high as 50% or above, the density is preferably as high as 99.9% or above, the hydrogen content is preferably as low as 3 ppm or below, the oxygen content is preferably as low as 576 ppm or below, and the problem that the product yield is low due to the fact that an existing molybdenum-titanium target is likely to be abnormal in the sputtering process is effectively solved.

The invention discloses a welding wire for delta-TRIP steel and a tailored blank laser welding method, and belongs to the technical field of tailored blank laser welding. The welding wire comprises, by mass, 0.08%-0.2% of C, 0.4%-1.2% of Si, 0.8%-1.8% of Mn, 3%-10% of modified titanium powder, smaller than or equal to 0.005% of S, smaller than or equal to 0.02% of P and the balance Fe and inevitable impurities. Wherein the titanium element is added in the form of modified titanium powder, and the modified titanium powder is prepared by mixing titanium powder, rare earth oxide and boron powder and then performing high-energy ball milling. According to the tailored blank laser welding method, annular light spot welding is adopted, a composite induction preheating-post-heating process is matched, and compressed air is used as shielding gas. According to the method, the volume fraction of the Ti (C, N) strengthening phase in the weld joint can be remarkably increased to 5.5%-7.5%, the weld joint structure is effectively refined, generation of thick columnar crystal delta-ferrite is inhibited, and a welded joint has excellent strength, plasticity and forming performance.

The invention belongs to the field of vanadium-aluminum alloy smelting. The invention discloses a preparation method of a high-density low-defect vanadium-aluminum alloy. The method comprises the following steps: crushing raw materials; drying the raw materials; aluminum is prepared according to the amount of residual aluminum in the alloy accounting for 106%-108% of the theoretical amount of aluminum participating in the oxidation-reduction reaction, and the dried raw materials are evenly mixed; the mixed materials are put into a smelting furnace, and the composite flux is flatly laid on the materials; tiling titanium powder on the composite flux; igniting the titanium powder to carry out thermit reaction on the furnace charge in the furnace; gradient extreme cooling is conducted on the alloy, and sequential solidification from bottom to top is achieved at the temperature gradient of 50-100 DEG C / h; and after solidification, disassembling the furnace, carrying out water quenching, and cooling to obtain the vanadium-aluminum alloy. According to the method, the problems of surface oxidation, internal cracking, bottom loosening and the like of the vanadium-aluminum alloy can be synchronously solved, and the compactness and quality of the vanadium-aluminum alloy are remarkably improved.

The invention belongs to the technical field of coatings, and particularly relates to an anti-impact high-flexibility anticorrosive coating as well as a preparation method and application thereof. According to the anti-impact and high-flexibility anticorrosive paint provided by the invention, by introducing the expanded graphite compositely modified by the silane coupling agent and the titanate coupling agent and the phosphorus-titanium-silicon sol, the anti-impact performance and the flexibility of a coating formed by curing the anticorrosive paint are improved, the coating can generate a phosphate passive film with a metal substrate, electrochemical corrosion is inhibited, and the service life of the coating is prolonged. The coating is not easy to fall off, can effectively adsorb UV-A / B waveband ultraviolet rays, is expected to meet the requirements of corrosion resistance and weather resistance in a harsh environment, and can be used as a film-forming substance by compounding a self-emulsified waterborne polyester dispersion and a waterborne epoxy modified hydroxy acrylic dispersion, and inorganic fillers such as boron nitride nanosheets, composite iron-titanium powder, wet-process sericite, silica powder and the like, so that the corrosion resistance and weather resistance of the coating are greatly improved. The performance of the anticorrosive paint is further improved; therefore, the technical problem of lack of high-performance anticorrosive paint in the prior art is solved.

The invention provides a beryllium-titanium alloy injection molding feed and a preparation method thereof, and relates to the technical field of metal injection molding. The beryllium-titanium alloy injection molding feed is prepared by mixing composite beryllium-titanium alloy powder and a catalytic degreasing binder according to the mass ratio of (70-80): (20-30), the composite beryllium-titanium alloy powder is composed of, by mass, 40% of spherical beryllium powder, 30% of spherical titanium powder and 30% of irregular beryllium powder. The D90 of the spherical beryllium powder and the spherical titanium powder is 60-80 [mu] m, and the D90 of the irregular beryllium powder is 6-10 [mu] m; the catalytic degreasing binder is prepared from the following components in parts by mass: 76 to 84 parts of polyformaldehyde, 7 to 9 parts of high-density polyethylene, 5 to 7 parts of ethylene-vinyl acetate copolymer, 3 to 5 parts of paraffin, 0.1 to 1.5 parts of stearic acid, 0.1 to 1.5 parts of polyethylene glycol and 0.1 to 1 part of BASF antioxidant. The spherical powder and the irregular powder are reasonably proportioned, so that the powder stacking density and sintering compactness are improved, and meanwhile, the flowability is considered.

The invention relates to the technical field of material surface engineering and metallurgical equipment, in particular to a composite coating for prolonging the service life of a crystallizer copper plate and a plasma spraying preparation method thereof.The composite coating comprises, by mass, 35%-55% of chromium, 20%-55% of nickel, 5%-10% of titanium diboride, 0.1%-0.3% of niobium and the balance chromium carbide and inevitable trace impurity elements. According to the invention, titanium diboride and chromium carbide are used as main hard reinforcing phases, so that the coating shows excellent wear resistance at normal temperature and high temperature; a hollow graphite electrode is adopted in the spraying process, plasma arc is generated, and meanwhile an ablation product (carbon) provides a carbon source for formation of chromium carbide; the titanium powder and the boron powder are subjected to an in-situ reaction in a plasma arc to generate titanium diboride, and the in-situ synthesis technology enables hard phase particles to be fine and uniformly distributed, and forms a firm interface with a metal binding phase, so that the problems of interface pollution and weak combination caused by the addition of the hard phase are avoided.

The invention discloses an in-situ composite titanium carbide reinforced titanium-based alloy and a preparation method thereof. The in-situ composite titanium carbide reinforced titanium-based alloy comprises the following chemical components in percentage by mass: 0 < = N < = 0.010%, 0 < = H < = 0.015%, 0 < = O < = 0.2%, 0.10-0.40% of C and the balance of Ti and inevitable impurities. The preparation method comprises the following steps: mixing the titanium powder and the graphite powder, and carrying out metal laser powder bed fusion printing. According to the invention, through in-situ synthesis of nano TiC particles, the size and morphology of the TiC particles are regulated and controlled, so that the mechanical property of the titanium-based alloy is greatly improved. The titanium-based alloy with high strength and excellent elongation is obtained by using a trace interstitial element C, and is independent of solid solution strengthening, second-phase dispersion strengthening or work hardening ways of expensive rare metals such as V, Mo, Nb and the like, so that green and low-cost preparation of the titanium alloy is facilitated.

The method comprises the steps that beryllium powder and titanium powder in a preset mass ratio are subjected to ball milling and mixing, and beryllium-titanium mixed powder is obtained; mixing the beryllium-titanium mixed powder and a binder to obtain a feed; the feed is loaded into an injection machine for injection molding, and a first beryllium-titanium alloy ball blank is obtained; performing oxalic acid catalytic degreasing on the first beryllium-titanium alloy ball blank under the protection of inert gas to obtain a second beryllium-titanium alloy ball blank with the residual binder; the second beryllium-titanium alloy ball blank is subjected to three-stage continuous heating sintering, and after sintering is completed, cooling is conducted along with furnace cooling; according to the method, the feed is formed through pre-granulation, the first beryllium-titanium alloy ball blank is formed through injection molding, the second beryllium-titanium alloy ball blank is formed through oxalic acid degreasing, the final beryllium-titanium alloy ball is formed through staged sintering, the diameter of the ball can meet the level larger than 5 mm, and various physical and chemical indexes also meet the requirements of users.

This utility model relates to the field of aluminum ingot production technology, and provides an automatic release agent spraying device for an aluminum ingot production line. The device includes a base plate, a storage tank for storing release agent fixedly installed on the top of the base plate, and a mixing tank fixedly installed on the top of the storage tank. A water tank is fixedly installed on the top of the base plate, a bracket is fixedly installed on the water tank, and a discharge pipe is fixedly installed on the bracket. A solenoid valve is installed on the discharge pipe, and a hopper for dispensing aluminum-titanium powder is fixedly installed at the top of the discharge pipe. The bottom end of the discharge pipe extends into the interior of the mixing tank. This automatic release agent spraying device for an aluminum ingot production line solves the problem that existing release agent spraying equipment has a single function and cannot spray other substances that protect the mold, leading to easy damage to the mold during long-term use and affecting its service life.

This invention relates to the field of powder forging technology and discloses a high-precision forklift mast support processing method, including the following preparation steps: mixing iron powder, chromium powder, cobalt powder, titanium powder, manganese powder and reinforcing agent, drying and ball milling to obtain a mixture; pressing the mixture on a press to form a forklift mast support preform, then placing the preform in a sintering furnace for sintering to obtain a sintered blank; heating the sintered blank to the forging temperature, placing it in a forging die for forging, and then heat-treating to obtain a high-precision forklift mast support. The high-precision forklift mast support obtained by mixing iron powder, chromium powder, cobalt powder, titanium powder, manganese powder and reinforcing agent to form a uniform mixture, pressing and sintering the mixture to form a sintered blank, and placing the sintered blank in a forging die for forging has high mechanical strength and good interfacial bonding, making it less prone to cracking.

The application belongs to the technical field of target material production, and discloses a preparation method of titanium-aluminum target material, which comprises the following steps: first, titanium powder and aluminum powder are weighed according to a mass ratio of 4-5:5-6; then, the titanium powder, the aluminum powder and an antioxidant are put into a mixer to mix and obtain powder I, the antioxidant is at least one selected from stearic acid, sodium phytate and tea polyphenol, and the adding amount of the antioxidant is 0.1-0.5% of the total mass of the titanium powder and the aluminum powder; then, the powder I is ball milled under the atmosphere of nitrogen or argon to obtain powder II, and the ball milling time is 6-12 hours; finally, the powder II is subjected to hot isostatic pressing sintering, and then cooled and discharged from the furnace to obtain the titanium-aluminum target material; through the preparation method, the titanium-aluminum target material with low oxygen content, high density and excellent mechanical properties is obtained; in addition, the application further discloses a titanium-aluminum target material prepared by the preparation method of the titanium-aluminum target material.

The invention discloses a preparation method and application of a graphite flake diamond complex. The preparation method comprises the following steps: mixing diamond micro-powder, crystalline flake graphite, copper powder, sodium chloride, potassium chloride and titanium powder according to a certain proportion, co-firing at 880-1050 DEG C for 30-60 minutes, cooling, taking out a mixed co-fired sample, and fully cleaning with deionized water to obtain the graphite flake diamond complex (GD); mixing GD, a silane coupling agent and absolute ethyl alcohol according to a certain proportion, magnetically stirring for 60-120 minutes at the temperature of 60-80 DEG C, and preserving heat for 6-12 hours at the temperature of 100-200 DEG C to obtain a silane coupling agent surface modified graphite flake diamond complex (GDSM); and then, uniformly mixing the GDSM and dimethyl silicone oil according to a certain proportion, putting the mixture into a vacuum drying oven, carrying out vacuum-pumping heat preservation at 80-120 DEG C for 120-360 minutes, cooling to room temperature, and taking out to obtain the graphite flake diamond composite heat-conducting silicone grease which can be applied to the field of interface heat management of high-power devices.

The invention discloses a diamond-impregnated bit matrix material for a superhard compact weak-abrasiveness stratum as well as a preparation method and application of the diamond-impregnated bit matrix material, and belongs to the technical field of metal products. In order to solve the problems that a superhard compact weak-abrasiveness stratum drill bit is prone to slipping, polishing and the like, the diamond-impregnated drill bit matrix material is provided, and the diamond-impregnated drill bit matrix material is prepared from 4%-6% of WC powder, 50%-55% of Fe pre-alloyed powder, 30%-35% of 660 copper powder, 2.7%-4% of nickel powder, 2.7%-4% of cobalt powder and 2.7%-4% of titanium powder. WC powder is used as a framework phase material, iron pre-alloy powder and 660 copper powder are used as a main body, and strengthening elements nickel, cobalt and titanium are added, so that the bending strength of the matrix is more than 600MPa, the Rockwell hardness is about 20HRC, the wear resistance of the matrix is highly matched with the wear characteristic of a superhard compact weak abrasive stratum, the strength meets the requirement of a special-shaped lip surface impregnated diamond bit, and the wear resistance of the matrix is greatly improved. The problem that a drill bit is prone to slipping and polishing is solved.

The invention discloses a surface treatment process for improving the high-temperature wear resistance of a stirring head. The surface treatment process comprises the following steps: 1) cleaning a stirring needle and the bottom of a shaft shoulder for three times by using distilled water, and blow-drying for plating; (2) dipping a plating pen in the composite brush plating solution to carry out electroplating brush treatment on the stirring needle and the bottom surface of the shaft shoulder, wherein the thickness of a plating layer is not less than 80 microns; the composite brush plating solution comprises a nickel-cobalt plating solution, tungsten nitride, chromium nitride and composite powder, wherein the composite powder comprises metal titanium powder, tin powder and chromium powder; by adopting the composite brush plating technology, the stirring needle and the shaft shoulder bottom of the stirring head are subjected to local surface treatment, the hardness of the stirring needle and the shaft shoulder bottom subjected to brush plating is obviously improved, the room-temperature and high-temperature wear resistance is obviously improved, the service life of the stirring head is prolonged, and the production cost of an enterprise is reduced.

The utility model discloses a filter device of a vacuum system for producing zirconium sponge, which relates to the technical field of zirconium sponge production and comprises a tank body and a filter component, a top cover is arranged at the top of the tank body, an air inlet pipe is connected to the lower end of one side of the tank body, and an air outlet pipe is arranged at the upper end of the other side of the tank body. And a dust collecting cavity is formed in the lower end of the tank body. According to the filtering device of the vacuum system for producing the sponge zirconium, through the arrangement of the filtering assembly, in the filtering process, due to the fact that a filter element of a first filtering plate is made of zirconium oxide foamed ceramic, the air hole density is 40-60 ppi, a filter element of a second filtering plate is made of porous activated carbon balls, and a filter element of a third filtering plate is made of a titanium powder sintering filtering material, the filtering efficiency is greatly improved; therefore, the overall corrosion resistance of the filtering assembly can be effectively improved, the filtering effect of the device can be kept, the connecting sleeve can be pulled out through the handle only by opening the top cover during replacement, and the filtering assembly is very convenient to replace and maintain.