59results about How to "Uniform tissue" patented technology

The invention belongs to the technical field of bar production, and particularly relates to a production method of a steel bar for a heavy-load automobile half axle, and the steel bar comprises the following chemical components in percentage by mass: 0.39-0.42% of C, 0.25-0.35% of Si, 1.45-1.70% of Mn, less than or equal to 0.013% of P, less than or equal to 0.006% of S, less than or equal to 0.25% of Cr, less than or equal to 0.25% of Ni, 0.15-0.20% of Mo, 0.06-0.10% of V, less than or equal to 0.15% of Cu and the balance of Fe and inevitable impurities. The method has the advantages that high-performance, high-purity and low-cost production of the steel bar for the heavy-duty automobile half shaft is realized through green short-process production of'ecological electric furnace + LF + RH + continuous casting 'in combination with low-carbon component design and a controlled rolling and controlled cooling process. And macrostructures and non-metallic inclusions of the finished steel meet the requirements of high-end products.

The invention relates to the field of metal materials and petroleum machinery, in particular to VBRE low-carbon low-alloy steel for a pressure-bearing part of an ultra-deep well blowout preventer group and a preparation method of the VBRE low-carbon low-alloy steel. The steel comprises the following chemical components in percentage by weight: 0.05 to 0.15 percent of C, 0.05 to 0.35 percent of Si, 0.40 to 0.80 percent of Mn, 2.0 to 3.0 percent of Cr, 0.80 to 1.20 percent of Mo, 0.05 to 0.25 percent of V, 0.0005 to 0.0030 percent of B, 0.0020 to 0.030 percent of RE and the balance of Fe. A series of key technologies such as purification smelting, high-purity rare earth treatment, argon protection pouring, cast ingot high-temperature demolding, high-temperature diffusion annealing, homogeneous forging forming and thermal refining are adopted, and the defects of internal component segregation, shrinkage cavity and porosity, non-metallic inclusion, uneven tissue, unstable performance and the like of the ultra-deep well blowout preventer set pressure-bearing part are greatly reduced; the VBRE low-carbon low-alloy steel for the pressure-bearing part of the blowout preventer group of the ultra-deep well, which has the characteristics of purity, homogeneity, compactness, refinement and the like and excellent obdurability matching, is obtained, and the service performance requirements of high strength, high toughness, heat resistance, corrosion resistance, fatigue resistance and the like are met.

This invention relates to a method for preparing high-performance aluminum alloy radiator plates. The method involves controlling the iron-silicon ratio of the main impurity component in the melt to be no less than 1.9 to reduce internal cracks in the cast billet and decrease the machining deformation rate of the finished product. This is achieved by adding aluminum-titanium alloy and a grain refiner in the furnace and online runner, while ensuring that the titanium content in the aluminum alloy ingot is maintained within a reasonable range, resulting in an ingot grain size ≤1. This improves the mechanical properties, uniform microstructure, and refined grains of the aluminum alloy radiator plate. Simultaneously, a small amount of copper is added, and the final rolling temperature is controlled at 330-360℃, resulting in fully recrystallized grains within the aluminum alloy plate. This improves the strength of the aluminum alloy radiator plate while eliminating anisotropy in its internal mechanical properties and reducing internal stress, ultimately yielding a high-performance aluminum alloy radiator plate.

The application provides a kind of X80 grade high toughness high hydrogen-induced cracking resistance thick wall LNG receiving station seamless steel pipe steel and its heat treatment process, composition: C 0.03%~0.06%, Mn 1.30%~1.50%, Cr 0.20%~0.50%, Mo 0.40%~0.60%, Ni 0.20%~0.40%, V 0.080%~0.150%, Nb 0.010%~0.030%, Al 0.015%~0.025%, P≤0.012%, S≤0.008%, N 0.0060%~0.0100%, T.O≤0.0020%, the rest is Fe and other inevitable impurities, cooperate heat treatment process production, with good strength and toughness and hydrogen-induced cracking resistance performance.

The application provides a superfine diamond ceramic bond tool bit and a preparation method and application thereof, relates to the technical field of grinding tools, and comprises a base material and a functional additive; the base material comprises the following raw materials in parts by mass: 10-30 parts of a ceramic bond, 50-70 parts of diamond abrasive, 1-20 parts of a filler and 1-20 parts of a nano polishing agent; wherein the diamond abrasive is an irregularly shaped diamond aggregate; the functional additive comprises a temporary binder and a dispersing agent, the temporary binder accounts for 1-10% of the total mass of the base material, and the dispersing agent accounts for 1-10% of the total mass of the base material. The superfine diamond is not caused to agglomerate in the mixing process by changing the mixing mode of the diamond and introducing the diamond in the form of an irregularly shaped diamond aggregate, and the surface roughness of a workpiece is greatly improved by adding a spherical nano polishing agent, and the process is simple, controllable and stable.

The application discloses a high-nitrogen plastic mold steel, which comprises the following components: C with a mass percentage of 0.28-0.33%, Si with a mass percentage of 0.25-0.38%, Mn with a mass percentage of 0.4-0.8%, Cr with a mass percentage of 14.5-15.5%, Mo with a mass percentage of 0.9-1%, N with a mass percentage of 0.095-0.115%, P with a mass percentage of less than or equal to 0.02%, S with a mass percentage of less than or equal to 0.003%, and O with a mass percentage of less than or equal to 0.0025%. The method for protecting atmosphere electroslag remelting the high-nitrogen plastic mold steel can ensure the nitrogen content of the plastic mold steel and improve the comprehensive characteristics of the plastic mold steel, for example, the setting parameters of the slag system and the filling ratio can ensure that the crystallized steel ingot is dense, the material is uniform, and non-metallic inclusions can be removed well; the N charging flow rate in the remelting process can keep the balance between the furnace atmosphere and the N content in the molten steel, and can ensure that the N content deviation of the whole steel ingot is small and consistent with the parent material before remelting.

The application relates to the technical field of wire rod production, in particular to a production method of high-efficiency and energy-saving alloy tool steel wire rod, and production steps of the method comprise the following steps: (1) cogging; (2) heating; (3) rolling: adopting a finishing rolling unit to roll, the temperature of an intermediate blank entering the finishing rolling unit is 900-910 DEG C, the temperature of the intermediate blank leaving the finishing rolling unit is 900-920 DEG C, so that the difference between the temperature of the intermediate blank leaving the finishing rolling unit and the temperature of the intermediate blank entering the finishing rolling unit is less than or equal to 20 DEG C; (4) cooling; (5) packing, the temperature of entering and leaving the finishing rolling unit is controlled by the cooling water pressure between the finishing rolling unit racks, high-strain-rate large deformation rolling in a non-recrystallization zone increases the dislocation and substructure density in supercooled austenite, and the produced deformation storage energy.

This invention relates to the field of aluminum alloy smelting additives, and particularly to a coated aluminum-titanium-boron composite grain refiner, its preparation method, and its application. The coated aluminum-titanium-boron composite grain refiner comprises: a core and a shell covering the core; the core is a solid aluminum-titanium-boron alloy body made of aluminum-titanium-boron alloy powder; the shell is an alloy layer. The coated aluminum-titanium-boron composite grain refiner provided by this invention has superior grain refinement effect, a simple preparation process, and when used in aluminum alloy smelting, it results in ingots with higher grain refinement, more uniform microstructure, and superior quality.

This invention provides a rolling process for eliminating noise during flaw detection of high-strength aluminum alloy sheets with low alloy content. The process employs a three-stage homogenization heat treatment: heating at 40℃ / h to 400-405℃ and holding for 3 hours; heating at 40℃ / h to 445-460℃ and holding for 10-24 hours; heating at 10℃ / h to 492-496℃ and holding for 8-24 hours; and then rolling at 420℃. The rolling process uses 9-15 passes, with the first three passes being rapid rolling and the last three passes using a large reduction (greater than 17% reduction per pass) for rapid rolling. The middle passes use a large reduction for rapid rolling, while the remaining passes use a small reduction for slow rolling. The final rolling temperature is not lower than 410℃. The thick plates obtained by this rolling process have a uniform microstructure along the thickness direction, small grain size, pass non-destructive testing, and possess high strength, plasticity, and fracture toughness.

The invention belongs to the technical field of metal materials and powder metallurgy, and discloses a preparation method of a TiB2 enhanced AlCoCrFeNi high-entropy alloy, which comprises the following steps: S1, weighing raw materials: weighing Al, Co, Cr, Fe and Ni metal powder according to an equal atomic ratio, and weighing TiB2 powder which accounts for 5-20% of the total mass of the Al, Co, Cr, Fe and Ni metal powder; s2, mechanical alloying machining is conducted, specifically, Al, Co, Cr, Fe and Ni metal powder and TiB2 powder are mixed and then subjected to high-energy ball milling machining, and composite powder is obtained; s3, molding processing: drying and sieving the composite powder in the S2, and loading the composite powder into a mold for cold press molding to obtain a green body; and S4, atmosphere protection sintering is conducted, specifically, the green body is placed in sintering equipment under inert atmosphere protection to be sintered, and the TiB2 reinforced AlCoCrFeNi high-entropy alloy is obtained. According to the preparation method, high-dispersion distribution of TiB2 particles in alloy powder is achieved through high-energy ball milling, and a bulk material which is uniform in structure and high in density is obtained in cooperation with a sintering process.

The application discloses a high-end caliper stainless steel surface composite strengthening system and process, which comprises a quenching device, a tempering device, a rolling device, a high-current pulse electron beam irradiation device and an ultrasonic cleaning device. The process specifically comprises the following steps: S1, quenching treatment; S2, tempering treatment; S3, rolling treatment; S4, high-current pulse electron beam irradiation treatment; and S5, cleaning treatment. The system can perform three-blade rolling treatment on the heat-treated caliper through the rolling device, can homogenize the surface layer structure of the caliper while improving the machining efficiency, can reduce the surface roughness of the caliper, can effectively realize the overall straightening of the caliper, and can reduce the quenching deformation. After the surface modification of the caliper through the high-current pulse electron beam irradiation device, the caliper can form a surface layer with uniform composition and nanometer-sized grain refinement, can not have obvious interface between the caliper matrix and the nanometer structure surface layer, and can not easily fall off, so that the service life of the caliper is greatly prolonged.

This invention relates to the field of high-temperature alloy technology, specifically to a notch-free GH4141 high-temperature alloy forging bar and its preparation method. In the microstructure of this GH4141 high-temperature alloy forging bar, M6C carbides are distributed in spherical granular form at the grain boundaries; the forging bar exhibits a high-temperature notch creep rupture time ≥40h under 732℃ temperature and 603MPa stress conditions, and the fracture locations are all located in the smooth segment.

This invention discloses a hot riveting and welding forming device for automotive interior plastic panels, belonging to the field of automotive interior processing technology. It includes a clamp at the upper end of a housing, with first electric rods fixedly connected to both sides of the upper end of the housing. A moving component is located at the lower end of the first electric rods, and a support plate is fixedly connected to the lower end of the moving component. A welding and riveting component is located at the lower end of the support plate, and a welding and riveting component is located at the lower end of a first slide rail. The welding and riveting component includes a second electric rod fixedly connected inside the support plate, with the output end of the second electric rod fixedly connected to the moving plate. By setting up the welding and riveting component, and utilizing a constant force spring in conjunction with the meshing of gears and gear blocks, the pressure of the melting head on the plastic column is kept constant. Compared with existing technologies, this effectively avoids the problem of plastic column collapse due to excessive pressure or loosening of the riveting due to insufficient pressure, resulting in more perfect melting and forming of the plastic column and a more stable and reliable hot riveting effect.

This invention discloses a method for unsteady-state ultrasonic standing wave-assisted control of fusion welding. It utilizes dual ultrasonic transducers to perform dual-wave interference, forming an ultrasonic standing wave. This ultrasonic standing wave is introduced into the fusion welding process, and its action on the welding area allows for real-time control of the microstructure and properties of different parts of the weld joint. This forms a unsteady-state ultrasonic standing wave with controlled directional movement of the wave packet nodes, which is then used to regulate the microstructure and properties of the weld joint. This invention enables control over the direction and speed of movement of the unsteady-state ultrasonic standing wave wave packet nodes, allowing for regional control of the microstructure and properties of different parts of the weld joint, resulting in a more uniform joint composition and microstructure. It can solve problems such as undercut, burn-through, high residual stress, severe deformation, and columnar crystals that reduce joint performance during the welding of thin materials or fine wires, refining grains and improving joint performance. It can achieve controllable connections from the centimeter scale to the micrometer scale.

This invention discloses a high-temperature resistant aluminum alloy wire suitable for arc-fused-wire additive manufacturing and its preparation method. The alloy wire comprises: manganese (Mn): 0.3-0.5%, copper (Cu): 5.3-5.8%, titanium (Ti): 0.15-0.35%, boron (B): 0.0005-0.006%, vanadium (V): 0.05-0.3%, zirconium (Zr): 0.05-0.2%, cadmium (Cd): 0-0.4%, silicon carbide (SiC): 0.1-0.4%, iron (Fe): ≤0.15%, silicon (Si): ≤0.06%, magnesium (Mg): ≤0.05%, zinc (Zn): ≤0.1%, other individual impurity elements: ≤0.05%, total other impurity elements: ≤0.15%, and the balance being aluminum (Al). The wire of this invention exhibits a uniform microstructure and moderate strength. The deposit formed by the arc-fused-wire additive manufacturing process possesses excellent strength, toughness, and other mechanical properties, with significantly improved heat resistance.

This invention discloses a method for preparing diamond / W-Cu composite materials using binder jet 3D printing technology. The preparation method includes the following steps: (1) adding diamond / W-Cu mixed powder into a printing device and printing a diamond / W-Cu green blank using a binder jet 3D printing device; (2) placing the diamond / W-Cu green blank into a tube furnace, placing a Cu block for melting and infiltration below the green blank, and performing melting and infiltration under an argon atmosphere to obtain the diamond / W-Cu composite material. This invention adds diamond to the W-Cu composite material, utilizing the high thermal conductivity of diamond to improve the thermal conductivity of the W-Cu composite material. Simultaneously, the prepared diamond / W-Cu composite material exhibits low shrinkage and high dimensional accuracy, making it particularly suitable for near-net-shape forming of complex shapes. This improves the designability and processability of the diamond / W-Cu composite material, and the preparation process is simple with low production costs.

The invention discloses a preparation method of an aluminum foil blank for a high-strength 8021 battery soft package, and belongs to the technical field of aluminum alloy processing. According to the method, an 8021 alloy cast ingot serves as a raw material, hot rolling, segmented cold rolling, medium and low temperature intermediate annealing, finish rolling and other procedures are carried out, and the high-strength aluminum foil blank is prepared by optimizing rolling reduction distribution and roll surface roughness. The tensile strength of the obtained blank is larger than or equal to 170 MPa, the plasticity and the surface quality are excellent, the process energy consumption is lower, equipment does not need to be newly added, and the method is suitable for industrial production of the aluminum foil blank for the high-end soft package lithium battery aluminum-plastic film.

The application provides a soybean big cherry yoghourt production process, which comprises the following steps: preparing raw soybean milk and tartary buckwheat bud powder, stress treating big cherries and color protection to prepare fruit pulp, adding the tartary buckwheat bud powder into the raw soybean milk to carry out heat preservation and deodorization treatment, then adding skimmed milk powder, sucrose and glucose, uniformly mixing and sterilizing and cooling, adding the big cherry fruit pulp to homogenize, carrying out pasteurization and cooling, then inoculating bacteria powder, and carrying out fermentation and post-ripening to prepare the soybean big cherry yoghourt. The application adopts the tartary buckwheat bud powder to deodorize soybean, the soybean raw milk has rich soybean flavor, no fishy smell, delicate taste, no bitter and astringent taste, the yoghourt fermented from the big cherry fruit pulp treated by stress and color protection has the special soybean and cherry flavor, no fishy smell, pure lactic acid flavor, and the natural color of the big cherry is well preserved.

The application relates to the field of metal materials, and discloses a steel for small-size steel balls for mine grinding and a preparation method of the small-size steel balls. The steel for the steel balls comprises the following components: C: 0.4%-0.9%, Mn: 3.0%-5.0%, Si: 1.4%-1.8%, Cr: 0.8%-1.3%, Ni: 0.3%-0.6%, Mo: 0.2%-0.4%, V: 0.15%-0.25%, Nb: 0.02%-0.06%, the rest is Fe and inevitable impurities, and the contents of Mn, V and Nb need to be controlled in coordination. The small-size steel balls are forged and hot-rolled, and are subjected to non-heat-insulation grading quenching and deep cryogenic treatment. The steel ball components and the preparation process realize low-temperature martensite transformation, obtain fine and uniform martensite structure, and the steel ball has high hardness, high impact toughness and excellent impact fatigue resistance.

The present application belongs to the field of TiAl intermetallic compound, and relates to a TiAl alloy composition and a preparation method of high-performance TiAl alloy low-pressure turbine blade. Based on a TiAl alloy composition, the alloy is first made to have fine grain structure through reasonable extrusion + recrystallization annealing process, then the special molybdenum alloy die and the process method of vacuum isothermal die forging are adopted, so that the brittle material realizes the forming of blade structure at high temperature and low speed, and the technical bottleneck problems such as large blade machining allowance, serious material waste, uneven blade structure, unstable mechanical properties of parts and the like caused by the need of machining preform of TiAl alloy at high temperature and preheating at low temperature during the near isothermal forming in the conventional preparation method are solved, and the blade quality is significantly improved and the manufacturing cost is saved. The machining allowance of the TiAl blade die forging part of the present application is only 2mm, and the raw material consumption can be saved by about 30%.

The invention relates to the technical field of high-temperature alloy manufacturing, and discloses a GH4169 alloy small-specification bar and a preparation method thereof.The method comprises the steps that a GH4169 alloy cast ingot is subjected to two-stage homogenization treatment; performing forging cogging on the homogenized cast ingot by adopting a high-speed forging machine to obtain a rolled blank; and the rolled blank is fed into a continuous rolling unit to be rolled, and the GH4169 alloy small-specification bar is obtained. According to the method, the cast ingot is homogenized at high temperature for a long time, diffusion and migration of elements can be promoted, and the uniformity of internal components of the cast ingot is improved; the cast ingot is subjected to large-deformation forging cogging by a high-speed forging machine, and carbides and crystal grains can be obviously uniform and refined; and a continuous rolling unit is adopted for rolling into a material, so that uniform deformation can be further ensured, and uniform and fine grains and carbides are obtained.

The application relates to the field of metallurgical and plastic processing of biomaterials, and provides a biodegradable Zn-Mg binary alloy and a preparation method and application thereof. The biodegradable Zn-Mg binary alloy is prepared by adopting a method of smelting-semi-continuous casting-forging-rolling-reverse extrusion and taking metal Zn and Zn-Mg intermediate alloy as raw materials. The Zn-Mg binary alloy prepared by the application has good mechanical properties, and the strength and ductility can meet the requirements of medical implant devices. Meanwhile, the Mg is added in the form of Zn-Mg intermediate alloy, so that the burning loss of the Mg can be effectively controlled, and the uniformity of the alloy composition and structure is improved. Further, high-purity raw materials are selected, and high-purity graphite crucibles are adopted for smelting, so that the heavy metal content in the Zn-Mg binary alloy is effectively controlled, the contents of Pb, As and Cd reach the standard of drinking water, and the safety of the Zn-Mg binary alloy implant in the body is ensured.

This invention relates to an aluminum-based composite material, a robot arm, and a method for preparing the robot arm, belonging to the technical field of metal matrix composites and high-end equipment structural components. The aluminum-based composite material comprises an aluminum alloy matrix and silicon carbide particle reinforcement distributed within the aluminum alloy matrix. The chemical composition of the aluminum alloy matrix, by mass percentage, includes: Cu 3.0-6.0%, Mg 0.5-2.0%, Ag 0.1-1.0%, Zr 0.05-0.3%, Ti 0.01-0.2%, with the balance being Al and unavoidable impurities. The microstructure of the aluminum alloy matrix contains L12-Al3(Zr,Ti) nanophases and lath-like Al2Cu phases. The robot arm prepared using this aluminum-based composite material exhibits an axial tensile strength exceeding 320 MPa and an axial thermal conductivity exceeding 220 W / (m·K) at a high temperature of 300℃, achieving an integrated function of "load bearing and heat conduction." This invention effectively solves the problems of decreased accuracy and shortened lifespan of existing robot arms due to material softening and insufficient heat conduction at high temperatures, and has the advantages of lightweight, high reliability and low cost.

The application discloses a cooling mold device and a continuous casting method thereof. The cooling mold device comprises a crystallizer assembly and a mold die assembly. The mold die assembly is arranged in the interior of the crystallizer assembly, and the mold die assembly and the crystallizer assembly are conically fitted and installed. The mold die assembly comprises a mold core rod, a first fixed copper sleeve, a second fixed copper sleeve and a plurality of mold inner linings. The plurality of mold inner linings are distributed in a circular array in a circumferential direction. The mold core rod is arranged in a cavity formed between the plurality of mold inner linings. The upper and lower ends of the plurality of mold inner linings are fixed by the first fixed copper sleeve and the second fixed copper sleeve respectively. The cooling mold of the application is composed of multiple materials with different thermal conductivity coefficients arranged in the circumferential direction. The application weakens the problem that the heat exchange coefficient is strong at the lower part and weak at the upper part of the casting blank due to the gravity of the casting blank itself during the horizontal continuous casting process. The cooling during the horizontal continuous casting process is more uniform. Therefore, the casting blank with more uniform structure, composition and performance can be obtained, and the quality of the casting blank is improved.

This invention belongs to the field of LD steel preparation technology, and specifically relates to a method for preparing rare earth cerium-modified LD steel and its application. The method includes the following steps: S1, batching and smelting; S2, multi-directional forging; S3, spheroidizing annealing; S4, quenching treatment; S5, deep cryogenic treatment and tempering. This invention adds rare earth cerium in a specific form, utilizing its strong deoxidizing and desulfurizing capabilities to effectively reduce the content of gases and harmful impurities in the molten steel. Simultaneously, cerium can form a stable composite phase with inclusions in the steel, modifying the originally angular harmful inclusions into spherical or near-spherical shapes, significantly reducing the cutting effect of inclusions on the matrix, reducing stress concentration sources, refining grains, suppressing network carbides, and promoting dispersed carbide distribution. Ultimately, a well-matched LD steel with high hardness, high tensile strength, and high impact toughness is obtained, improving wear resistance and extending tool life.

This invention discloses a complete process for preparing ultra-fine diameter tungsten-rhenium alloy wire with large deformation. The method includes: 1. Obtaining tungsten-rhenium mixed powder through spray drying and hydrogen reduction; 2. Pre-pressing and pre-sintering the tungsten-rhenium mixed powder to obtain a tungsten-rhenium alloy billet; 3. Performing hot isostatic pressing followed by heated forging to open the billet; 4. Performing heated rotary forging; 5. Performing high-temperature straightening, followed by surface polishing and cleaning; 6. Impregnating with a lubricant and heating to form a lubricating film; 7. Performing continuous wire drawing at high temperature using a single die in multiple passes and impregnating with graphite emulsion to obtain fine tungsten-rhenium alloy wires; 8. Performing alkaline washing, acid washing, and rinsing; 9. Performing high-temperature annealing. This invention enhances the lubrication effect of tungsten-rhenium alloy during high-temperature wire drawing by strictly controlling the wire drawing lubrication conditions, ensuring continuous deformation wire drawing of tungsten-rhenium alloy, preparing high-performance ultra-fine diameter tungsten-rhenium alloy wire with uniform structure and excellent mechanical properties, reducing damage to the die, and lowering production costs.

This invention relates to the field of metal pipe manufacturing technology, and discloses a method for manufacturing large-diameter, thin-walled TA31 titanium alloy seamless pipes, comprising the following steps: mixing sponge titanium and an intermediate alloy and then melting to obtain a TA31 ingot; forging the ingot into a titanium billet and processing it into a bright rod; and detecting the β transformation temperature T of the bright rod. β Heat the light bar to T β A thick-walled tube blank is obtained by piercing once at 30-80 ℃; the thick-walled tube blank is then heated to T. β The thin-walled tube blank is obtained by extending and piercing at 20-50 °C. This invention combines a single β-region large-wall-thickness piercing with a single α-β two-phase region large-deformation extension piercing, which can produce tube blanks with superior microstructure and properties, providing good initial conditions for subsequent processing. It not only significantly improves product performance but also has high production efficiency and added value, resulting in good social and economic benefits.

The application belongs to the technical field of high-temperature alloy processing, and particularly relates to a nickel-based high-temperature alloy ultra-thin foil and a preparation method and application thereof. According to the application, the cold rolling deformation of each pass is limited to 10% to 30%, a 1050 DEG C to 1100 DEG C stress relief annealing cycle rolling mechanism is matched when the cumulative deformation reaches 65% to 70%, and a 1170 DEG C to 1230 DEG C solid solution treatment process is coupled to the 0.02 mm to 0.03 mm ultra-thin intermediate blank, so that the problems of strip breakage, poor plate shape precision, low thickness uniformity, large internal stress, insufficient room temperature and high-temperature tensile strength in the prior art can be solved, and thus the nickel-based ultra-thin foil with high mechanical properties can be stably prepared.

The application belongs to the field of metallurgy, and discloses a high-nitrogen austenitic gas valve steel wire rod and a manufacturing method thereof. The manufacturing method comprises the following steps: heating a 21-4N initial-rolled square billet after being ground; sequentially performing rough rolling, medium rolling, fine rolling and high-speed water-penetrating rolling on the heated 21-4N initial-rolled square billet to obtain a wire rod; and performing yarn laying and air cooling on the wire rod to obtain a disc round product. The application adopts a high-temperature soaking mode to heat the rolled steel billet, and reduces the temperature difference between the inside and outside of the rolled steel billet during rolling, thereby improving the hot working plasticity of the 21-4N, avoiding the generation of disc round surface cracks, and improving the disc round surface quality. The high-speed wire rod adopts water-penetrating temperature control rolling, and the yarn laying is followed by air cooling for rapid cooling, so as to ensure that the internal grain size and lamellar precipitates of the wire rod are qualified.

The application belongs to the technical field of metal material hot working, and particularly relates to a microstructure and performance regulation method for high-forging-ratio TA15 titanium alloy components. The method comprises the following steps: S1: blank heating, placing the blank in a heating furnace to heat to T1 temperature and heat penetration; S2: blank fast forging, taking the blank out of the furnace after heat penetration, performing multi-fire-time forging to prepare a blank on a fast forging machine to obtain an intermediate blank; S3: intermediate blank heating, placing the intermediate blank in the heating furnace to heat to T2 temperature and heat penetration; S4: die forging, taking the intermediate blank out of the furnace after heat penetration, performing die forging on a die forging press to obtain a final forging piece; and S5: post-forging treatment. The application effectively improves the internal microstructure uniformity and strength level of the high-forging-ratio TA15 titanium alloy forging piece by adjusting the forging heating temperature and deformation distribution in the blank preparation and die forging processes without increasing the remaining processes, so that the strength level is 30 MPa higher than the standard requirement.