5092results about "Solid state diffusion coating" patented technology

A hydrogen gas sensor with a substrate and a zinc oxide nanostructured thin film deposited on the substrate, wherein the zinc oxide nanostructured thin film has a lattice structure with a weight ratio of low binding energy O2− ions to medium binding energy oxygen vacancies in a range of 0.1 to 1.0, and a method of fabricating a gas sensor by thermally oxidizing a metal thin film under low oxygen partial pressure. Various combinations of embodiments of the hydrogen gas sensor and the method of fabricating the gas sensor are provided.

The invention provides a hydrogen induced crack resistant 2000MPa grade zinc-based coated steel plate, which comprises a base plate and a coating, the base plate comprises the following components in percentage by weight: 0.32%-0.40% of C, 0.15%-0.45% of Si, 1.30%-2.50% of Mn, less than or equal to 0.02% of P, less than or equal to 0.02% of S, 0.03%-1.80% of Al, 0.02%-0.10% of Nb, 0.02%-0.15% of Ti, 0.002%-0.005% of B, 0.15%-0.60% of Cr, and Fe and other inevitable impurities; and the plating layer comprises the following components in percentage by mass: 0.15%-3.50% of Al and the balance of Zn. The invention further provides a manufacturing method of the hydrogen induced crack resistant 2000 MPa grade zinc-based plated steel plate. The manufacturing method comprises the steps of smelting, casting, hot rolling and hot dipping. The invention further discloses a hot stamping method of the hydrogen induced crack resistant 2000MPa-grade zinc-based coating steel plate. The hot stamping method comprises the steps of steel plate heating, steel plate cooling and hot stamping. According to the hot stamping forming part produced through the method, the tensile strength of the steel plate is larger than 2000 MPa, the yield strength is larger than 1400 MPa, the elongation is larger than 5%, and the delayed fracture resistance is excellent.

The invention relates to the technical field of motor rotors, and discloses a motor rotor and a machining method thereof.The method comprises the steps that hot forging is conducted on an alloy steel base material based on the preset forging and pressing temperature, and multi-layer gradient cutting is conducted on a rotor initial blank; the method comprises the following steps: performing composite deposition treatment on a cylindrical blank based on a magnetic material, placing the magnetic composite blank in a vacuum environment for dynamic heat treatment, performing dynamic balance finishing on the heat treatment blank based on a preset alloy, performing surface strengthening treatment on a balance rotor in a nitrogen atmosphere, and coating the balance rotor subjected to surface strengthening with a preset coating, the motor rotor with the optimized surface is obtained; and dynamic balance trimming is combined with preset alloy characteristics for microstructure regulation and control, and it is ensured that the rotor has excellent operation stability in a high-rotation-speed environment. And finally, surface strengthening treatment is carried out in a nitrogen atmosphere, and a functional coating is used for covering, so that the wear resistance and corrosion resistance of the surface layer are remarkably improved, and the requirements of a motor system on a high-performance rotor under complex working conditions are met.

The invention belongs to the technical field of metal part surface modification, and relates to a composite strengthening method for a carburized surface of a high-bearing gear of an aero-engine. According to the method, high-hardness and high-density ceramic shots are adopted as media for high-energy mechanical shot peening strengthening, the advantage that the subsurface strain hardening effect of the contact strengthening technology is good and the barb-shaped distribution characteristic of mechanical shot peening residual compressive stress are utilized, extremely high residual compressive stress is introduced to the subsurface position, and the contact fatigue performance of the tooth surface of the gear is improved. High-frequency laser shot peening strengthening is used for secondary treatment, so that the surface layer of the material is subjected to plastic deformation, high-amplitude residual compressive stress is introduced into the surface layer of the material within the depth range of more than 500 microns by utilizing the advantage of large influence depth of laser-induced shock waves, and the residual compressive stress can inhibit fatigue crack initiation, has a certain depth and inhibits fatigue crack propagation; and the bending fatigue resistance of the root of the gear can be effectively improved. And an abrasive flow process is adopted, so that the roughness is reduced to be more than 0.4 mu m.

The invention relates to a modified current collector for a cathode-free metal battery and a preparation method and application thereof.The preparation method comprises the steps that an in-situ modification reaction is conducted on the surface of a copper current collector to obtain a current collector coated with a copper oxide nanometer material, and then selenium is introduced to the surface of the current collector coated with the copper oxide nanometer material through a partial in-situ substitution reaction to obtain the modified current collector coated with the copper oxide nanometer material. The preparation method comprises the following steps: preparing a copper selenide and copper oxide composite modified current collector, performing in-situ lithiation reaction through electrochemical deposition, and partially converting to generate corresponding lithiates, thereby obtaining the modified current collector for the non-anode metal battery. According to the invention, the functional artificial interface layer with lithium affinity, high stability and high ionic conductivity is constructed on the surface of the copper-based current collector in situ, so that the key problems of uneven metal deposition and unstable SEI layer on the surface of the negative electrode current collector in the current research of the metal secondary battery without the negative electrode are solved, the formation of dendritic crystals and the occurrence of side reactions are inhibited, and the service life of the metal secondary battery is prolonged. Therefore, the coulombic efficiency, the safety and the cycle life of the battery are improved.

The present invention belongs to the technical field of metal materials and their processing, and discloses a treatment method for double glow plasma nitriding on the inner wall surface of a titanium alloy round tube, and obtains a TC4 round tube with a nitriding layer on the inner wall, which significantly improves the hardness and wear resistance of the inner wall of the TC4 titanium alloy round tube, prolongs the service life of the parts, and meets the urgent needs of modern industry for high wear-resistant parts. After cleaning, drying, vacuuming, double glow plasma nitriding, furnace cooling, and precise control of parameters such as heating rate, gas ratio and nitriding time, the thickness and performance of the nitriding layer are precisely controlled, ensuring the stability and repeatability of the treatment effect. The obtained TC4 round tube sample was tested, and the metallographic structure of the nitriding layer on the inner wall was closely combined with the matrix, with a small risk of falling off and a relatively thick layer thickness of up to 17±1µm, and an average hardness of up to 713.04HV, which can reach 2.2 times the hardness of the matrix.

The invention discloses a carburizing and quenching process of a thin-wall gear and a clamping tool of the thin-wall gear. The carburizing and quenching process comprises process parameters of temperature, time, flow, carbon potential, cooling speed and the like in stages of pre-cleaning, pre-oxidation, preheating, strong carburizing, diffusion, cooling, quenching, tempering and the like. It needs to be explained that in the technical process, the purpose of reducing the heat treatment deformation quantity of the thin-wall gear is achieved by optimizing the hanging and clamping mode of the thin-wall gear and improving the temperature and time parameters during carburizing and quenching in the scheme. Besides, a clamping tool suitable for the process is designed in the scheme, so that the clamping stability of the thin-wall gear during carburizing and quenching treatment is improved, and the heat treatment deformation quantity of the thin-wall gear is further reduced.

The invention provides an online detection and compensation method for local decarburization of a high-strength spring steel band, which comprises the following steps: arranging an oxygen content sensor in a continuous annealing furnace to monitor oxygen concentration in real time, and marking a potential decarburization risk section; scanning the risk section steel strip by adopting infrared thermal imaging, and generating a carbon distribution map to position a decarburization area; pulse laser heating is conducted on the decarburization area, and methane-argon mixed gas is introduced to achieve in-situ carburization; and finally, local thermal stress is eliminated through high-frequency induction heating. According to the method, decarburization risk dynamic early warning, defect accurate positioning, local efficient carbon supplementation and stress homogenization control are achieved, and the surface quality and fatigue performance of the steel strip are remarkably improved.

The present invention relates to the technical field of double hardness hammer heads, specifically to a manufacturing process of double hardness hammer heads, comprising: pouring molten steel into a sand mold after refining treatment, taking out the casting after cooling, and obtaining a rough hammer head; hanging the rough hammer head on a hanger and moving it into an insulation shell for normalizing heat treatment, and air cooling to room temperature; adjusting the working part of the rough hammer head to be located at the position of the electromagnetic heater of group A, heating the working part, then moving the working part down to the quenching oil, cooling the oil to room temperature, repeating the above operation, and performing cyclic quenching; removing the rough hammer head from the hanger, and performing surface treatment on the working part; hanging the rough hammer head after surface treatment on the hanger again, moving the working part to the position of the electromagnetic heater of group A, performing tempering heat treatment, and then moving it out of the insulation shell, air cooling to room temperature, and obtaining a double hardness hammer head. The present invention improves the overall quality of the working part of the hammer head through the cooperation of cyclic quenching / rare earth nitriding / tempering stress relief process.

The present invention relates to a method for recovering carbonates by treating wastewater (E) and / or residual sludge (B) from an oxidation tank in an installation (10) for nitriding in a molten salt tank having a nitriding tank (11), an oxidation tank (12) and a stop tank (13). The method comprises the steps of: - Hydroxide ions and / or OH of the residual sludge (B) - Hydroxide ions CO 3 2- The process includes converting the carbonate salt to carbonate ions and separating the water and carbonate salt.

A spherical ball joint has an outer ring 2 of a nickel based material with a carbonitriding layer on a spherical inner surface 2a sliding on an inner ring 3 of a cobalt-based or nickel-based material

The invention provides a partitioned strengthening and toughening treatment method for an additive remanufacturing hot forging die, which comprises the following steps of: firstly, deeply cleaning a cavity of a failed forging die to remove impurities, residues and the like in the cavity, and creating a good basic condition for subsequent remanufacturing treatment; secondly, the repairing area of the forging die is subjected to remanufacturing treatment, so that the basic toughness requirement of the additive remanufacturing hot forging die is met, and cracking is prevented; afterwards, selective surface nitriding or carburizing strengthening treatment is conducted on the strengthening area of the additive remanufacturing hot forging die, so that the strength and hardness of the strengthening area are improved, the abrasion resistance is guaranteed, the strength and toughness partition of the surface of a cavity of the additive remanufacturing hot forging die is achieved, and then the comprehensive performance of the strengthened hot forging die is comprehensively improved; and finally, the service life of the reinforced hot forging die is prolonged.

The invention relates to the field of nitriding furnaces, in particular to an ammonia gas circulating system of a nitriding furnace, which comprises a furnace body, a furnace cover and a gas inlet mechanism, the furnace body is provided with a containing cavity, the furnace cover is connected to the furnace body and covers a cavity opening of the containing cavity, and the gas inlet mechanism comprises a gas inlet main pipe, an annular pipeline, an electromagnetic valve and a detection assembly, one end of the gas inlet main pipe is connected to the outer wall of the annular pipeline, the other end of the gas inlet main pipe is used for being connected with an external ammonia gas storage mechanism, the electromagnetic valves are connected to the annular pipeline, the other ends of the electromagnetic valves extend into the furnace body, the electromagnetic valves are circumferentially distributed around the axis of the annular pipeline at intervals, and the detection assembly is embedded in the containing cavity to control the electromagnetic valves to be opened and closed. External ammonia gas is conveyed to the annular pipeline through the gas inlet main pipe, then the ammonia gas is input into the furnace body through the multiple electromagnetic valves distributed around the axis of the annular pipeline in the circumferential direction at intervals, meanwhile, the detection assembly controls the electromagnetic valves to be opened and closed through the pressure intensity in the containing cavity, the ammonia gas introduced into the nitriding furnace is evenly distributed to all positions in the nitriding furnace, and the uniform nitriding effect is improved.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

A mechanical component (10) has a surface and is made of steel subjected to quenching and tempering. The mechanical component includes a nitrided layer (11) formed at the surface (10a, 10b, 10c, 10d). Steel contains at least 0.95 mass % and at most 1.10 mass % of carbon, less than 0.30 mass % of silicon, less than 0.50 mass % of manganese, less than 0.0080 mass % of sulfur, at least 1.3 mass % and at most 1.6 mass % of chromium, and a remainder composed of iron and an inevitable impurity. An average nitrogen concentration at the surface is equal to or more than 0.10 mass %. A hardness at the surface is equal to or more than 850 Hv. An amount of retained austenite at the surface is equal to or less than 20 volume %.

The invention discloses a tantalum-tungsten alloy surface layer thickness ratio gradient structure coating and a preparation method thereof, and belongs to the technical field of ultrahigh-temperature anti-oxidation coating preparation. A tantalum-tungsten alloy is used as a substrate, and the surface coating of the tantalum-tungsten alloy is prepared through the following steps: (1) solid-phase embedding boronizing; (2) a ZrB2-MoSi2-ZrSi2 layer is prepared through the combination of slurry fusion sintering and a solid infiltration method; and (3) the ZrB2-TaSi2-Zr6Ta2O17 composite coating slurry is prepared in a sintering mode. The total thickness of the prepared coating ranges from 120 micrometers to 200 micrometers, the thicknesses of all the layers are in an exponential gradient relation: tn = t1 * Kn-1 (t0 = 1, K = 1.2-1.3), the problems of uneven thermal stress distribution between the tantalum-tungsten alloy substrate and the coating and between the layers of the coating and ultra-high-temperature anti-oxidation protection of the tantalum-tungsten alloy are successfully solved, the prepared coating is good in binding force and free of defects such as holes and cracks, and the service life of the coating is prolonged. And the tantalum-tungsten alloy can keep a good anti-oxidation effect for a short time under the extreme high-temperature condition of 2000 DEG C.

The invention relates to a preparation method and system for an atomic gas chamber for sapphire coating, and the preparation method comprises the steps: S1, placing a cleaned atomic gas chamber on a heating base station of a reaction chamber, and filling the reaction chamber with replacement gas to discharge residual gas in the reaction chamber; s2, filling aluminum source gas into the reaction chamber, and carrying out chemical adsorption on the wall surface of the atomic gas chamber to form a first film layer; s3, filling replacement gas into the reaction chamber to discharge residual aluminum source gas in the reaction chamber; s4, filling oxide gas into the reaction chamber to oxidize the first film layer and convert the first film layer into an aluminum oxide film layer; s5, filling replacement gas into the reaction chamber to discharge residual oxide gas in the reaction chamber; and S6, repeating the steps S2 to S5 to form a preset number of aluminum oxide film layers with a preset thickness on the wall surface of the atomic gas chamber so as to form the atomic gas chamber with the sapphire coating film. The anti-shielding capability of the alkali metal atomic gas chamber can be enhanced, and the electromagnetic wave precision measurement performance of the atomic gas chamber is improved.

The invention discloses a regulation and control process for a nitridation gradient permeable layer of a die-casting special-shaped die, and belongs to the technical field of die nitridation, and the regulation and control process comprises the following steps: S1, carrying out three-dimensional quantitative analysis on the die to obtain three-dimensional information of the die, and dividing the surface of the die into regulation and control areas of four grades of A, B, C and D; s2, regulation and control area parameter mapping: calling a corresponding basic process parameter set from a preset process parameter mapping table according to different grades of the regulation and control area; s3, mold partition ion nitriding; s2, an ion nitriding furnace with multiple paths of independent control anodes and partitioned gas conveying nozzles is arranged, the mold is placed in the nitriding furnace, the process parameter sets, obtained in the S2, of all the regulation and control areas are distributed to a partitioned gas conveying control system and an anode power supply system to conduct permeation on the mold, and the mold is cooled to the room temperature; the industrial problems that due to the fact that geometrical characteristics of a special-shaped mold are complex, the infiltrated layer thickness is not uniform, and the structure property difference is large are solved, and the infiltrated layer with the enough thickness can be obtained in areas difficult to infiltrate such as deep cavities and narrow slits.

Provided is a laminated iron core including: a laminate of electromagnetic steel sheets and a granular oxide that contains magnetite and covers a side surface of the laminate, in which a contact angle of a water droplet until 20 minutes elapses after dropping the water droplet on the side surface covered with the granular oxide is 80° or more. When heights of peaks detected in ranges of 2θ of 41° to 42° and 38° to 39° in XRD measurement of the side surface covered with the granular oxide are represented by H1 and H2, respectively, H1 / (H1+H2) is 0.8 or more.

The invention discloses a preparation method of a laser-assisted titanium alloy ion nitriding wear-resistant coating. The method comprises the following steps: 1, treating a titanium alloy workpiece; secondly, the treated titanium alloy workpiece is subjected to ion nitriding, and a nitriding layer with a hard shell layer structure is formed; 3, performing laser remelting on the infiltrated layer to destroy a hard shell layer structure; and fourthly, the titanium alloy workpiece subjected to laser remelting is subjected to ion nitriding diffusion permeation, and the wear-resistant coating is formed. The wear-resistant coating is prepared on the surface of the titanium alloy workpiece through the laser-assisted ion nitriding method, the hard shell layer structure on the surface of the nitriding layer is eliminated through laser remelting, the thickness and quality of the wear-resistant coating are improved, phase change and workpiece deformation are avoided, and the preparation process is simple, high in reliability and suitable for application and popularization.

The invention discloses a titanium-aluminum alloy surface high-temperature protection composite coating and a preparation method thereof, and belongs to the technical field of metal material surface modification. The thickness of the composite coating is uniform and controllable within the range of 2-6 microns, the composite coating is composed of three phases of TiSi2, Ti5Si3 and Al2O3, TiSi2 / Ti5Si3 is a continuous phase, and Al2O3 is a dispersed phase; the continuous phase TiSi2 / Ti5Si3 is in contact with and combined with a titanium-aluminum alloy matrix, and the dispersed phase Al2O3 is not in contact with the matrix. The preparation method comprises the steps that the titanium-aluminum alloy is subjected to pretreatment of cutting, polishing and cleaning; embedding into Si powder and SiO2 powder, and carrying out high-temperature diffusion in a vacuum environment. Compared with the prior art, the preparation process is simple and efficient, and the high-temperature protective composite coatings with different thicknesses can be prepared by adjusting the high-temperature treatment time.

The invention discloses a preparation method of high-magnetic-induction oriented silicon steel, which comprises the following steps: sequentially heating, roughly rolling, finely rolling and coiling a plate blank obtained by continuously casting qualified molten steel to obtain a hot-rolled coil; the hot-rolled coil is sequentially subjected to normalizing treatment and cold rolling, and a cold-rolled sheet is obtained; the cold-rolled sheet is sequentially subjected to decarburization and nitriding, and the high-magnetic-induction oriented silicon steel is obtained; in the nitriding process, the nitriding temperature is 910-980 DEG C, and the dew point is 10-60 DEG C. A 910-980 DEG C high-temperature nitriding method is adopted, the diffusion efficiency of N atoms in the steel strip is improved, the uniformity of the N concentration in the thickness direction is improved, the secondary recrystallization quality and the thickness consistency of a magnesium silicate bottom layer can be improved, meanwhile, the heating rate can be properly increased during high-temperature annealing, and the high-temperature annealing time is shortened.

The invention relates to the technical field of lamps, in particular to a plating forming process of a lamp. The problems that the interface bonding force of the coating and the matrix is insufficient and the corrosion resistance of the coating is poor are solved. According to the method, micro-arc oxidation is carried out in the pretreatment stage, a compact Al-Si-O ceramic layer is generated on the surface of a high-aluminum matrix in situ, and in combination with deep diffusion of plasma siliconizing, a transition area with gradient Si distribution is constructed; the pitting corrosion resistance of the coating is optimized through the component gradient design of the inner-layer coating, the middle-layer coating and the outer-layer coating; the surface of the coating lamp is subjected to checkerboard scanning by using short pulse laser, so that the porosity and microdefects of the surface of the coating are improved, and the corrosion resistance of the coating is enhanced; a uniform oxynitride passivation film is generated on the surface of the coating in situ through low-temperature plasma post-oxidation-nitridation treatment, the defect that a film layer is easy to strip in a traditional passivation process is avoided, and the corrosion resistance of the material in long-term service can be stably maintained.

The invention provides salt-spray-resistant steel, a preparation method and application of the salt-spray-resistant steel. The salt-spray-resistant steel sequentially comprises an alloy matrix, a permeable layer and an anti-corrosion coating from inside to outside. The alloy matrix comprises an Fe element; the permeable layer comprises Fe, N and O elements; the anticorrosive coating covers at least the surface of the permeable layer. The steel has the characteristics of high strength and salt spray resistance, the binding force of the coating and a matrix is good, the thickness of the anti-corrosion coating is greatly reduced under the condition that the anti-corrosion requirement of the CX grade is met, the machinable performance of a workpiece is effectively improved, and the adverse effects that the workpiece meshing force is poor, and the surface is not uniform due to the thick coating are avoided.

The invention discloses a heat treatment process of an alloy drill bit, which belongs to the field of alloy and comprises the following steps: S1, after the alloy drill bit is primarily machined and formed, carrying out vacuum pretreatment, heat preservation and heating; s2, the drill bit is rapidly transferred into a sectional temperature control carburizing furnace to be subjected to main carburizing treatment, the temperature is controlled between 930 DEG C and 960 DEG C, the carburizing time ranges from 3 hours to 4 hours, and the carburizing depth is controlled between 0.3 mm and 0.6 mm; s3, after carburizing is completed, subarea multi-speed cooling is carried out, quenching is carried out for 20 seconds at the temperature of 850 DEG C or above, controlled cooling is carried out for 60 seconds within the range of 550 DEG C to 650 DEG C, slow cooling is carried out for 80 seconds at the temperature of 200 DEG C or below, and a refined martensite complex phase structure is obtained; s4, after cooling is completed, double-section tempering treatment is carried out; and S5, performing ultrahigh-pressure static boriding diffusion treatment. The method has the beneficial effects that the processing uniformity, the structure stability, the wear resistance and the corrosion resistance of the alloy drill bit are effectively improved and the service life of the alloy drill bit is effectively prolonged by adopting staged temperature control, different cooling media and a directional quenching technology.

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 relates to the field of metal coatings, and discloses a gradient composite high-toughness wear-resistant coating and application and a preparation method thereof, the gradient composite high-toughness wear-resistant coating comprises a substrate layer, a middle layer cladded on the substrate layer and a boriding layer on the surface; the base layer is made of a FeCoCrNiTi high-entropy alloy; the middle layer comprises a plurality of laminated composite material layers, and the composite material layers contain TiB2 and FeCoCrNiTi high-entropy alloy; in the direction from the substrate layer to the boriding layer, the content of TiB2 in the composite material layer is gradually increased, and in the composite material layer attached to the boriding layer, the content of TiB2 is 16-20 wt%. The gradient composite high-toughness wear-resistant coating is suitable for strengthening agricultural soil-touching parts, resisting operation impact and reducing the abrasive particle abrasion condition, so that the service life of the soil-touching parts is prolonged, and the operation cost is reduced.

The invention relates to the technical field of aluminum alloys, in particular to a high-strength wear-resistant aluminum alloy material and a preparation process thereof. Aluminum alloy raw materials are subjected to smelting, casting, high-temperature heat preservation, extrusion forming and stretching forming, and the aluminum alloy plate is obtained. And the surface of the aluminum alloy plate is subjected to thermal diffusion treatment, and the high-strength aluminum alloy plate is obtained. And then modified chitosan, paraffin, a vanillin solution, a sodium tartrate solution and the like are added to prepare the microcapsule corrosion inhibitor. The preparation method comprises the following steps: mixing isophorone diisocyanate, hydroxypropyl polydimethylsiloxane, a microcapsule corrosion inhibitor and dibutyltin dilaurate to obtain an organic silicon modified polyurethane resin prepolymer, and adding various assistants to obtain the high-performance coating. And the surface of the high-strength aluminum alloy plate is coated with the high-performance coating, and a finished product is obtained after drying.

The invention discloses a copper-molybdenum alloy component and a manufacturing method thereof, and belongs to the technical field of alloy manufacturing. Mo powder is sequentially subjected to vacuum drying treatment, oxidation-reduction treatment and coating treatment, so that the Mo powder has good flowability and powder laying uniformity; under the preset 3D printing condition, the porous Mo framework which is stably formed and complex in structure can be obtained, the problems that an existing rolling composite method is complex in technological process, strict in technological requirement and the like are solved, and the method is suitable for manufacturing parts with small sizes or complex shapes; the porous Mo framework is subjected to vacuum thermocuring and Cu infiltration treatment, and the obtained copper-molybdenum alloy component is excellent in compactness, high-temperature stability, interface bonding strength, heat conduction, electrical conductivity and the like. The problems that a copper-molybdenum alloy obtained in the prior art is poor in wettability and low in density and uniformity, and the mass content of copper is lower than 30%, so that the heat conductivity, the electric conductivity, the air tightness and other performance are low are solved.

The invention discloses a heat treatment process of a gear, which relates to the technical field of automobile gear heat treatment, and comprises the following steps: S1, blanking, S2, forging, S3, normalizing: preheating the gear in a preheating furnace by adopting a heating mode of combining infrared radiation and hot air circulation, S4, rough machining, S5, carburizing and quenching: carburizing and quenching, s6, induction heat quenching: performing induction heat quenching on an induction coil; S7, nitriding treatment; S8, low-temperature tempering; S9, finish machining; normalizing is combined with infrared radiation, hot air circulation preheating and induction heating, the effects of reducing energy consumption and machining cost and improving production efficiency are achieved, the forging force is reduced through isothermal forging, the energy consumption of equipment is greatly reduced, pulse type vacuum carburizing, high-pressure gas quenching and induction heat quenching are adopted to introduce a self-adaptive induction heating technology, and the energy consumption of equipment is greatly reduced. And a plasma nitriding technology and a composite nitriding technology are adopted, so that the surface hardness, wear resistance and fatigue strength are improved.