98 results about "Hot working" patented technology

This application relates to a production mold and method for irregularly shaped frame mounting edges, belonging to the technical field of forging and hot working. It includes a base, a lower mold, a left mold, a right mold, and an upper mold. The lower mold is disposed on the base. The left and right molds slide horizontally at the ends of the lower mold away from the base. When the left and right molds are closed, the cavity formed matches the shape of the forging. The left and right molds cooperate to forge and shape the shape of the forging. The upper mold slides vertically and has an expanding mold and a shaping mold facing upwards. The expanding mold includes an expanding section and a forming section. The size of the expanding section decreases sequentially away from the forming section. The shape of the forming section matches the inner shape of the forging. The expanding mold forges and shapes the inner shape of the forging. The shaping mold is used to press and shape the upper surface of the forging, thus forming the forging. This application has the effect of reducing the number of forging passes for irregularly shaped frame mounting edges while improving the product qualification rate after die forging.

This utility model relates to the field of dust removal technology and discloses a dust removal device for hot working of aluminum materials. It includes a base, with a protective cover and a housing fixedly connected to the outer wall of the base. A dust removal assembly is provided on the inner wall of the base. The dust removal assembly includes a first motor, which is fixedly connected to the inner wall of the base. A lead screw is fixedly connected to the output end of the first motor. A slider is threadedly connected to the outer wall of the lead screw. A suction head is fixedly connected to the outer wall of the slider. A limit rod is slidably connected to the inner wall of the suction head. A gear is fixedly connected to the outer wall of the suction head, and a rack is meshed with the teeth of the gear. A vibration assembly is provided on the inner wall of the housing. In this utility model, the interaction between the first motor, lead screw, and slider expands the dust removal range, improves the dust removal effect, cools the dust, and prevents the dust temperature from becoming too high and causing disasters.

The present disclosure relates to a manufacture for manufacturing an Al—Zn alloy plated steel sheet having high hot workability and corrosion resistance.

The application discloses a method for improving the creep performance of a manganese-containing titanium-aluminum alloy and the manganese-containing titanium-aluminum alloy, and belongs to the technical field of the manganese-containing titanium-aluminum alloy. The application overcomes the problem that the beta to alpha transformation cannot completely occur in the high-temperature and cooling process of the alloy due to the addition of the manganese element, and the residual beta phase is orderly transformed into beta o (B2) phase during further cooling, thereby damaging the high-temperature creep performance of the alloy, and realizes the improvement of the high-temperature creep performance of the alloy on the basis of the hot working deformation of the alloy without a can. o The application provides an effective scheme for solving the bottleneck problem of the creep performance of the manganese-containing titanium-aluminum alloy caused by the residual beta (B2) phase, and meanwhile, the good formability of the manganese-containing titanium-aluminum alloy in the hot working without a can is maintained, and the engineering application prospect of the low-cost high-performance manganese-containing titanium-aluminum alloy in the field of aviation and aerospace is effectively promoted.

The present application belongs to the field of hot working of metal materials, and discloses a forging forming method for 11.5-ton GH4169 alloy super-large turbine disc forgings; comprising: blanking and chamfering; three-fire upsetting of the blank, the first fire heating at 1030 DEG C with a deformation of 15-18%, the second fire heating at 1020 DEG C with a deformation of 25-28%, and the third fire heating at 1015 DEG C with a deformation of 20-25%; processing positioning holes; final forging heating at 1010 DEG C, and three-stage control of the pressing speed according to "slow-fast-slow". The present application is aimed at the 11.5-ton, φ2200*420 super-large turbine disc forgings produced in China for the first time, and through stepwise cooling, medium-high-medium deformation distribution, differentiated ultra-long holding and special pressing speed curve, qualified forgings are successfully prepared on an 800MN die forging press, filling the blank of the forging forming process of the GH4169 turbine disc of the specification.

The present application belongs to the technical field of metal plastic working, and relates to a method for identifying surface cracking of a blank during hot working of steel. The specific steps are as follows: obtaining an infrared image of the surface of the blank; identifying a contour region of the surface of the blank; calculating the median value of the temperature values or infrared radiation intensity values of all pixel points in the contour region of the surface of the blank, and performing noise reduction processing on the infrared image by using the median value; identifying and calibrating the bare metal surface and the oxide scale covered surface in the contour region of the surface of the blank; calculating the temperature or infrared radiation intensity gradient of each pixel point in the contour region of the surface of the blank; for each identified crack, performing fractal calculation to determine the morphology of the crack, and classifying the possible causes of the crack. The present application solves the problem of online automatic identification of surface cracking of high-temperature metal during hot working, avoids false positives and false negatives caused by manual monitoring, and can output crack morphology data to provide data for detailed technical analysis.

The application relates to the technical field of copper alloy conductive materials, and particularly discloses a novel high-strength copper alloy wire rod and a preparation method thereof. The novel high-strength copper alloy wire rod comprises a wire body, a shielding layer, an anti-oxidation coating, a fireproof layer, a wear-resistant layer and a skin layer which are sequentially coated on the outer periphery of the wire body from inside to outside. The preparation method comprises the following steps: S1, melting and casting an ingot, and then performing hot working to obtain a rod blank; S2, performing multi-pass stretching on the rod blank, and performing pickling and refining to obtain a copper alloy wire core; S3, spirally twisting six copper alloy wire cores to form a wire body in the shape of a twisted wire; S4, forming the shielding layer on the outer surface of the wire body; S5, coating anti-oxidation paint on the outer surface of the shielding layer; S6, coating the fireproof layer on the outer surface of the anti-oxidation coating; and S7, forming the wear-resistant layer on the outer surface of the fireproof layer, and then extruding the skin layer. The high-strength copper alloy wire rod can be used for new energy automobile motor windings and precision electronic connectors, and has the advantages of high strength and high conductivity, excellent electromagnetic shielding, flexibility, wear resistance and environmental protection.

This invention discloses an environmentally friendly copper alloy with excellent comprehensive performance. Its composition includes: Sn: 3-5 wt%, Ni: 0.3-1.5 wt%, P: 0.03-0.3 wt%, S: 0.2-0.6 wt%, Al: 0.005-0.3 wt%, with the balance being Cu and unavoidable impurities. The microstructure of this copper alloy comprises Cu₂S phase and Ni₃S₂ phase, with the Cu₂S and Ni₃S₂ phases accounting for 1-6% of the total area. In the sulfides of the copper alloy microstructure, the Ni₂S phase accounts for more than 10% of the total area. This copper alloy is lead-free and possesses good machinability, mechanical properties, hot working properties, and corrosion resistance. This invention also discloses the preparation method and applications of this copper alloy.

The utility model belongs to the field of mechanical manufacturing and hot processing technology, and specifically relates to an automatic material pouring device for hot die forging production, the turnover frame top is provided with two transmission rollers, all are rotationally provided with rotary rods on the two transmission rollers, all are provided with toothed driven wheels on the two rotary rods, both sides of the turnover frame are provided with a motor support, and transmission motors are installed on the two motor supports, when the transmission block drives the turnover gear on the rotary rod to move upwards to a certain position, the turnover gear and the turnover rack are meshed to drive, automatic turnover of the hopper box is realized, the design does not need an additional power device to drive the turnover of the hopper box, the structure of the equipment is simplified, the manufacturing cost and the maintenance difficulty of the equipment are reduced, the turnover angle of the hopper box can be accurately controlled through reasonable design of the parameters of the turnover gear and the turnover rack, the turnover angle can be adjusted according to different hot die forging production requirements, and it is ensured that the materials can be completely poured out.

This invention relates to the field of metallic materials technology and discloses a method for improving the performance utilization rate of metallic materials based on multi-directional forging. This method first performs homogenization annealing pretreatment and initial microstructure quantitative characterization on the target metal billet to determine the critical deformation parameters and hot working window of the material. Then, the multi-directional forging is divided into three consecutive stages: pre-forging, main forging, and final forging. Process parameters for each stage are customized, and a differentiated progressive reversing forging path is adopted to collaboratively control the deformation uniformity and metal flow line orientation in each direction. After final forging, gradient temperature-controlled cooling is used to achieve microstructure transition regulation, and combined with microstructure-matching heat treatment, the performance of the forging is homogenized across the entire cross-section. Finally, the machining allowance is optimized based on the differentiated performance distribution of the forging. This invention solves the problems of mixed-grain microstructure, large performance anisotropy, and low utilization rate in traditional multi-directional forging.

This invention provides a steel with excellent machinability, capable of suppressing cracks during hot working and melt cracks during high-frequency quenching, and exhibiting excellent fatigue strength when used as a component in mechanical structures. The steel contains, by mass percent, C: 0.20–0.50%, Si: 0.01–0.80%, Mn: 0.50–2.00%, P: less than 0.030%, S: 0.010–0.095%, Cr: 0.01–1.30%, V: greater than 0.200% and less than or equal to 0.300%, Bi: 0.0051–0.1500%, and N: 0.0030–0.0200%, and satisfies the following formula (1). In the steel, the number density of fine Bi particles is 80–8000 particles / mm. 2 The number density of coarse Bi particles is 10 particles / mm. 2 Below. 0.80≤C+(Si / 10)+(Mn / 5)-(5S / 7)+(5Cr / 22)+1.65V≤1.50(1).

The application relates to a preparation method of high-strength TC10 titanium alloy wire for fasteners and relates to the technical field of titanium alloys, and aims to solve at least one of the problems that the existing TC10 titanium alloy wire is affected by heat processing technology, heat treatment technology and the like during preparation, the strength and plasticity are difficult to match, and the wire is prone to the "wire breaking" phenomenon. The method considers the processing characteristics of the TC10 titanium alloy wire, adopts high-temperature deformation heat treatment to perform blank hot drawing and circle processing + roll die cold drawing + low-temperature deformation heat treatment to perform wire sizing processing, and then performs solid solution aging process treatment, so that the TC10 titanium alloy wire with matched strength and plasticity and not prone to wire breaking is prepared.

The present application relates to the technical field of metal material heat treatment, in particular to a kind of multiphase Dievar hot working die steel and its heat treatment method, the method includes the following steps: S1 to be handled Dievar steel is austenitized;S2 after austenitizing Dievar steel is with first isothermal temperature T1 is salt bath isothermal quenching, and keeps t1 time, T1 lower than the martensite transition start temperature of Dievar steel M s Point;S3 with second heating rate fast heating to second isothermal temperature T2, and keeps t2 time, T2 higher than the M s Point;S4 after processing Dievar steel is cooled to room temperature, and multiphase Dievar hot working die steel is obtained.The present application obtains the multiphase structure of martensite+ bainite+ residual austenite by multiphase heat treatment technology, hardness is kept at higher level while impact toughness is significantly improved.Multiphase structure processing technology expands the application range of Dievar steel, and can be applied to more complex die.

The utility model discloses a kind of heat processing device for recycling PET plastic, it is related to PET plastic technical field.The utility model includes dryer and pipeline being set on dryer, the top of pipeline is provided with fan, further includes: pollution collection part, the pollution collection part is set on pipeline;Oscillating filter part, the oscillating filter part is installed on fan;The pollution collection part includes pollution collection subassembly, and the pollution collection subassembly is set on pipeline;And quick assembly and disassembly component, the quick assembly and disassembly component is set on dryer;The pollution collection subassembly includes support plate fixedly connected on the outer wall of pipeline.The utility model is set by setting pollution collection part, solved the impurity of inconvenience to handle wind net filtration, impurity is cleaned down after four places drift, not only difficult to clean, still can enter device internal damage device, inconvenient to keep the clean and normal operation of device.

[Problem] To provide a hot-worked magnet with less chipping. [Solution] Provided is a hot-worked magnet that contains an aggregate of a plurality of magnetic powders, wherein: the magnet comprises a first surface that extends in the radial direction, a second surface that extends in the axial direction, and a ridge line that is formed by the intersection of the first surface and the second surface; and the surface roughness of the ridge line is within the range of 32–150 um. The hot-worked magnet exhibits little chipping.

The application discloses layered multi-scale TiB2 and TiB w The application discloses a preparation method of a hybrid aluminum matrix composite material. The method relates to the technical field of high-strength and high-toughness aluminum matrix composite material preparation. The method comprises the following steps: ball-milling Ti powder and TiB2 powder to uniformly mix the powders; adding deionized water, a dispersing agent and a binder into the mixed powders, uniformly mixing the powders, and preparing uniformly dispersed slurry; pouring the slurry into a mold, placing the mold on a cold source, and performing directional solidification; placing the solidified slurry in a vacuum drying machine, performing freeze drying, and preparing a ceramic green body preform; placing the ceramic green body preform in a furnace, performing sintering, and preparing a ceramic preform; placing the ceramic preform in a hot working mold, performing heating and heat preservation, pouring prepared aluminum melt into the hot working mold, performing pressure infiltration, and preparing an ingot; and performing solid solution and aging treatment on the ingot. The aluminum matrix composite material has high-strength and high-toughness mechanical performance characteristics, and can be used for manufacturing load-bearing structural parts in various fields.

The invention discloses a high-oxygen high-carbon titanium alloy wire rod and a preparation method thereof, and belongs to the field of nonferrous metal materials. In the aspect of components, on the basis of industrial pure titanium, the room-temperature tensile strength of the industrial pure titanium is improved to 680 MPa or above by remarkably improving the C content in the industrial pure titanium; meanwhile, by means of the promoting effect of C on dynamic recrystallization in the titanium alloy hot working process, the deformation uniformity of the material is improved, and the relative brightness difference from the center to the edge of the material does not exceed 1%. According to the preparation method, in the production mixing stage, the surface of the sponge titanium is sequentially sprayed with the base coating liquid and the mixed fluid of oxygen, carbon and iron, and the adding uniformity of carbon, oxygen and iron is improved; surface cracking prevention measures are adopted in the deformation process, and the surface cracking prevention measures include optimization of the forging ratio and the forging temperature in the cogging forging stage and surface flame oxidation of an isolation layer in the rolling stage. And industrial production of the high-strength titanium alloy wire rod with the good surface is successfully achieved.

The application discloses a high-thermal-conductivity flame-retardant wrought magnesium alloy material and a preparation method thereof, and the magnesium alloy material comprises the following components in percentage by weight: 2-6% of Al, 1.5-5% of Ca, 0.3-1% of Zn, 0.3-0.8% of Mn, 0.3-1.5% of RE, and the balance of Mg and other inevitable impurities, wherein Al / Ca is less than or equal to 2, and RE is one to three elements selected from Ce, La, Y, Nd, Gd and Sm. The magnesium alloy material has good room-temperature mechanical properties, flame-retardant properties and excellent thermal conductivity, the material has a room-temperature thermal conductivity of greater than or equal to 123 W / m*K, a yield strength of greater than or equal to 200 MPa, a tensile strength of greater than or equal to 250 MPa, an elongation of greater than or equal to 8%, and a burning point of greater than or equal to 850 DEG C; and the material can be prepared into a rod, a pipe, a plate, a complex profile or a structural member and the like by using a hot working method, and the process applicability is wide, so the material can be popularized on a large scale.

The application discloses a laminated heterostructure VCoNiAlTi alloy rod material and a preparation method thereof. The preparation method comprises the following steps: after raw materials of a multi-main-element alloy are mixed, the raw materials are subjected to first smelting to prepare an alloy mother ingot; the alloy mother ingot is subjected to second smelting to prepare a first large-size alloy rod material; the first large-size alloy rod material is subjected to first annealing to obtain a second large-size alloy rod material; and the second large-size alloy rod material is subjected to hot extrusion to obtain a first laminated heterostructure VCoNiAlTi alloy rod material. The application can effectively improve the uniformity of the alloy rod material and the forming stability of the rod material, and reduce the hot working cracks and the uneven organization phenomenon. The alloy rod material can realize continuous adjustment of the organization and the performance after subsequent annealing, so that the yield strength, the tensile strength and the ductility can be matched and optimized according to the service requirements. The application can ensure a high performance level while meeting the engineering requirements such as simple preparation process, controllable cost and scalable size.

The application relates to the technical field of submerged-arc welding, and particularly discloses a submerged-arc welding process, welding wire and application for manufacturing an induction heating elbow mother pipe, wherein the welding wire comprises the following components in mass ratio: C 0.05-0.09%, Si 0.20-0.25%, Mn 1.55-1.75%, P 0.0010%, S 0.005-0.007%, Al 0.01%, Ni 2.0-4.5%, Cr 0.35-0.45%, Cu 0.45-0.75%, V 0.03%, Nb 0.025%, Mo 0.15-0.3%, Ti 0.01%, and B 0.0005%, wherein Ceq of the alloy is 0.4-0.95%, and Pcm of the alloy is 0.27-0.31%. The welding seam welded by the welding wire and the welding process exhibits strong heat-resistant processing performance and can withstand various types of heat treatment.

This invention belongs to the field of aluminum alloy hot working and heat treatment technology, specifically disclosing a heat-resistant Al-Cu-Mg-Mn aluminum alloy, its preparation method, and its applications. The aluminum alloy composition of this invention includes Cu, Mg, Mn, Zn, Cr, Zr, and Ti, with the balance being Al, targeting medium-temperature load-bearing applications at 250–300℃. The process of this invention does not rely on adding high-cost elements or rapid solidification and additive manufacturing as the main technical route. Instead, it introduces a pre-forging process after the alloy casting billet is completed and before homogenization treatment. This process breaks down and reconstructs the continuous coarse second-phase skeleton in the casting state, forming dislocations, subgrain boundaries, and local high-strain zones in the matrix. Subsequently, through graded homogenization, hot extrusion, two-stage solution treatment, and artificial aging, high-density, fine, and uniform precipitation of the T-phase is induced. This method can be integrated with conventional casting, forging, extrusion, and heat treatment equipment, and is suitable for medium-temperature heat-resistant load-bearing components in aerospace and transportation equipment.

This invention relates to the field of alloy heat treatment and bearing manufacturing technology, specifically a wind turbine main shaft bearing raceway and its heat treatment method. The heat treatment method includes smelting, forging, quenching and tempering, precision machining, and raceway surface quenching. The quenching structure includes two sets of heaters on the left and right sides, and two sets of water spray boxes on the left and right sides. This invention uses eight heating heads and four independent cooling water boxes to quench the raceway surface of the bearing raceway after smelting, forging, quenching and tempering, and precision machining. By strictly controlling the distance between each component, the heating power and quenching speed in different areas are coordinated and adjusted. After heat treatment, the annular raceway of the bearing raceway achieves high surface hardness, uniform hardened layer depth, fine microstructure, and grain size, solving the problems of soft bands and areas, and unqualified microstructure and grain size on the raceway surface of bearing raceways after traditional surface quenching techniques.

The present application belongs to the technical field of steel processing, and particularly relates to a method for improving fatigue life of bearing steel by using a hot working process. After hot rolling or other deformation processing of the steel material is completed, the steel material is placed into a closed heating furnace, and the steel material is subjected to 1100-1200 DEG C hot working treatment. At the same time, argon is filled into the heating furnace, so that the argon pressure in the heating furnace reaches 900-1100 atm. After 250-280 min, the pressure is released and the heating is stopped, and the steel material is cooled with the furnace. Then the steel material cannot be subjected to further deformation processing, but can be subjected to non-deformation processing. By using the hot working process, the microscopic pores between the inclusions and the steel matrix caused by the hot rolling or other deformation processing of the steel material can be eliminated, so that the fatigue life of the bearing steel is greatly improved.

The application discloses a forging method for improving the structure uniformity of GH4720Li alloy and belongs to the technical field of high-temperature alloy hot working, which comprises the following steps: firstly, performing multi-cycle axial upsetting and drawing on a cast ingot to preliminarily break the structure; secondly, performing axial upsetting and drawing combined with chamfering to round the blank and promote stress penetration; thirdly, performing multi-fire lengthening to further refine and homogenize the structure; and fourthly, completing the forming of finished rod materials through lengthening and rounding. The application combines different forging forms, homogenizes the internal stress field and recrystallization behavior of the blank, and thus obtains the GH4720Li alloy rod material with uniform structure and stable performance.