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294results about "Auxillary arrangements" patented technology

Production process of hot-rolled coiled plate

The invention relates to the technical field of metal material hot working, and discloses a hot-rolled coiled plate production process which comprises the following steps: preparing a reaction type protective agent, the high-temperature-resistant coating is prepared from the following raw materials in parts by weight: 20 to 40 parts of tetraethoxysilane, 5 to 15 parts of triethyl phosphate, 1 to 5 parts of triethyl borate, 0.5 to 2.0 parts of cerous nitrate (III) hexahydrate, 0.1 to 1.0 part of lithium acetate and 0.01 to 0.05 part of vanadyl acetylacetonate (IV). Coating the surface of a hot-rolled plate blank with the protective agent; the coated plate blank is heated in a heating furnace, so that the protective agent forms a molten-state protective layer in situ; carrying out hot rolling on the plate blank with the molten protective layer; and cooling and coiling the hot-rolled steel strip. In the whole heating and hot rolling process, the molten protective layer isolates the contact between the steel and the oxidizing atmosphere, so that the generation of oxide scales is fundamentally inhibited, the production process is simplified, and the metal yield is increased.
Owner:SHANDONG IRON & STEEL GRP YONGFENG LINGANG CO LTD

High-thermal-conductivity titanium steel cold-rolled composite board and preparation method thereof

The invention relates to the technical field of titanium-steel composite plates, and particularly discloses a high-thermal-conductivity titanium-steel cold-rolled composite plate and a preparation method thereof.The preparation method comprises the steps that plasma etching treatment is conducted on a titanium plate, a TiB2-graphene heat conduction layer is arranged on the etched surface in a laser cladding mode, and an aluminum oxide whisker layer is deposited on a stainless steel plate through plasma electrolysis; the preparation method comprises the following steps: spraying nano-copper slurry on the surface of aluminum oxide whiskers, curing, carrying out composite rolling on a modified titanium plate and a stainless steel plate, and carrying out annealing and tempering treatment after rolling to obtain the high-thermal-conductivity titanium steel cold-rolled composite plate.
Owner:JIANGSU YONGJIN METAL TECHNOLOGY CO LTD

Production method of hot-rolled copper-steel bimetal composite plate

According to the production method of the hot-rolled copper-steel double-metal composite plate, copper is oxygen-free copper, and Cu is larger than or equal to 99.95%; the steel is low-alloy high-strength steel; the key process steps of the copper-steel composite plate comprise assembling, heating, rolling, cooling and finishing. By controlling the rolling temperature, the pass reduction rate, the cooling speed and other processes, the plate shape of the copper-steel rolled composite plate is obviously improved, the stability of the bonding surface is greatly improved, and therefore industrial production and application of the copper-steel bimetal rolled composite plate are achieved.
Owner:HUNAN VALIN XIANGTAN IRON & STEEL CO LTD

Method for single-pass rolling of thin gauge and ultra-wide TC4 titanium alloy plates

The present invention discloses a method for single-pass rolling of thin-gauge and ultra-wide TC4 titanium alloy plates. The method adopts EB flat ingots, explosive compounding, slab heating, single-pass rolling, straightening and annealing processes to obtain thin-gauge and ultra-wide TC4 titanium alloy plates. The plate width is 3500-4300 mm, the plate thickness is 20-30 mm, and the microstructure of the thin-gauge and ultra-wide TC4 titanium alloy plates is an α+β dual-state structure. The plate has the advantages of good plate surface quality, wide plate width, and small difference in longitudinal and transverse mechanical properties.
Owner:宝武特种冶金有限公司 +1

Method for rolling difficult-to-deform and easy-to-deform metal composite plate under assistance of composite energy field

The invention provides a method for rolling a difficult-to-deform and easy-to-deform metal composite plate under the assistance of a composite energy field, and belongs to the technical field of metal composite plate preparation. According to the method, a metal plate difficult to deform and a metal plate easy to deform are heated to different temperatures through electromagnetic induction, and then pulse current auxiliary rolling is conducted. The method comprises the following steps: step 1, carrying out surface treatment on a metal plate bonding surface; 2, fixing and aligning the two metal plates; thirdly, the metal plate is subjected to electromagnetic induction different-temperature heating; fourthly, pulse current auxiliary rolling is conducted; and step 5, carrying out pulse current annealing on the composite board. The electromagnetic induction different-temperature heating technology is used in the composite plate rolling process, then pulse current auxiliary rolling is carried out, a traditional heating mode is replaced, the heating efficiency is improved, energy consumption can be reduced, the production efficiency is improved, the production process is shortened, and various properties of a product are optimized.
Owner:YANSHAN UNIV

Preparation method of titanium-steel composite plate and titanium-steel composite plate

The invention discloses a preparation method of a titanium-steel composite plate and the titanium-steel composite plate, and belongs to the technical field of metal composite material preparation. The preparation method of the titanium-steel composite plate comprises the following steps: (1) carrying out titanizing treatment on the surface of a pretreated steel substrate to form a titanizing layer, so as to obtain a titanized steel substrate; (2) laminating the titanized steel substrate and the pure titanium plate, pre-pressing, and sequentially carrying out double-pass composite rolling and heat treatment to obtain a titanium steel composite plate; wherein asynchronous isothermal rolling is adopted for the first pass of double-pass composite rolling, and isothermal symmetric rolling is adopted for the second pass of double-pass composite rolling. The preparation method is simple, efficient and low in cost, a uniform and compact titanium layer is formed on the surface of the steel substrate through titanizing treatment, the binding force between the pure titanium plate and the steel substrate is enhanced, and generation of harmful metal compounds is avoided. Meanwhile, the composite rolling technology combining asynchronous isothermal rolling and isothermal symmetric rolling is adopted, and the internal organization structure and performance of the titanium steel composite plate are effectively improved by regulating and controlling rolling parameters.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Steel rail bending torsion on-line monitoring control method based on thermal-state 3D full-section contour scanner

The invention relates to the technical field of steel rolling production quality detection, in particular to a steel rail bending and torsion online monitoring control method based on a thermal-state 3D full-section contour scanner, which is applied to a finish rolling mill and comprises the following steps: acquiring data of a steel rail, including a bending angle, a torsion angle and temperature data; formulating a corresponding control strategy according to the data of the steel rail; dynamically optimizing a control strategy through a PID (Proportion Integration Differentiation) control algorithm in combination with the monitoring data and the state of the finish rolling mill; and a mapping relation between steel rail deformation and parameters is established, an anti-overregulation mechanism is set, and online monitoring and control of steel rail bending torsion are achieved. Three-dimensional point cloud and temperature data of a plurality of sheet layers of the steel rail are obtained in real time, bending and torsion parameters are calculated through an intelligent algorithm and then transmitted to a finish rolling mill control system in real time through the industrial Ethernet, parameters such as roller pressure and roller gaps are automatically adjusted based on a preset control model, a real-time closed loop of detection-calculation-adjustment is formed, and the real-time control of the steel rail is achieved. And ensuring that the steel rail geometric shape meets the standard in the tapping stage.
Owner:PANGANG GRP PANZHIHUA STEEL & VANADIUM

Rolling mill

A rolling mill of the present invention is a rolling mill including: a pair of upper and lower rolls disposed in a housing; and a roll chock that holds each of the upper and lower rolls. A liner having a vibration reducing function is provided on at least one of a housing counter surface of the roll chock and a housing surface corresponding to the housing counter surface.
Owner:JFE STEEL CORP

A method for ultrasonically assisted differential temperature rolling of aluminum / magnesium / aluminum three-layer composite plates

The present invention belongs to the technical field of metal composite material preparation, and relates to a method for ultrasonically assisted differential temperature rolling of an aluminum / magnesium / aluminum three-layer composite plate, comprising the following steps: pre-treating a magnesium plate and two pre-treated aluminum strips; heating the heat-treated magnesium plate in an induction coil heating furnace, welding and sealing the edges of the heat-treated magnesium plate to obtain two rolled composite aluminum strips; preparing an aluminum / magnesium / aluminum three-layer plate blank; applying ultrasonic waves to rollers, and rolling the aluminum / magnesium / aluminum three-layer plate blank using upper and lower rollers to obtain an aluminum / magnesium / aluminum three-layer composite plate. The present invention heats the magnesium plate by an induction coil while not heating the aluminum strip, thereby achieving differential temperature rolling between the magnesium plate and the aluminum plate, which can reduce the plasticity difference between the magnesium and aluminum materials caused by the performance difference between the two materials. Moreover, by applying ultrasonic waves to the rollers, the oxide layer on the surface of the metal to be bonded is broken, thereby achieving full bonding of dissimilar metals with large plasticity differences, and avoiding defects such as holes and cracks at the composite interface of the aluminum / magnesium / aluminum three-layer composite plate.
Owner:SHANXI TAIGONG HEAVY EQUIPMENT CO LTD

Device and method for preparing edge type copper-lithium composite belt

The invention relates to a preparation device and method of an edge type copper-lithium composite belt, and relates to the technical field of batteries. Comprising a mounting back plate, a rolling forming system, a rolling compounding system and a buffering system, the rolling forming system is mounted at the left part of the mounting back plate and is used for rolling the metal lithium strip into a convex lithium strip; the buffer system is mounted in the middle of the mounting back plate and used for caching the special-shaped lithium strip; and the rolling compound system is mounted at the right part of the mounting back plate and is used for rolling the lithium strip and the copper foil into a compound strip. Stepped compounding is achieved, full-roller rolling and compounding are changed into rolling and compounding at the step, the stress degree of the lithium strip and the composite strip is reduced, the conditions of edge wrinkling, edge cracking and the like are avoided, and the product quality and the production efficiency are improved.
Owner:FENGXIN GANFENG LITHIUM CO LTD

Preparation method of composite board with excellent interface bonding

The invention provides a preparation method of a composite plate with excellent interface bonding, which comprises the steps of blank surface treatment, blank assembly and plate sealing, welding, vacuumizing, heating, rolling, cooling, heat treatment and plate splitting, in the blank assembly and plate sealing steps, blanks are placed according to the sequence of base material, covering material, covering material and base material to obtain a composite blank; in the rolling step, if tcp / tsp is larger than or equal to 4, the rough rolling single-pass rolling reduction is larger than or equal to 30 mm, and the rough rolling pass is larger than or equal to 1; the single-pass rolling reduction of the first three passes of finish rolling is larger than or equal to 25 mm, and the pass of finish rolling is smaller than or equal to 7; if tcp / tsp is smaller than 4, the rough rolling single-pass rolling reduction is larger than or equal to 35 mm, and the rough rolling pass is larger than or equal to 3; the finish rolling single-pass rolling reduction is smaller than or equal to 25 mm, the finish rolling pass is smaller than or equal to 7, and the total compression ratio CR is larger than or equal to 7; tcp is the target thickness of the base material in the composite board, tsp is the target thickness of the covering material in the composite board, and the unit is mm. The rolling reduction is controlled through the target proportion of the base material and the covering material in the composite board, and combination at different thickness ratios is promoted.
Owner:INST OF RES OF IRON & STEEL JIANGSU PROVINCE +3

Composite processing methods for metal materials

A method for composite processing of metal materials includes: bringing a first surface (31) of a first plate (3) into contact with a second surface (41) of a second plate (4); placing the first plate and the second plate in a circumferential groove (13) of a first roller (1), with the third surface (42) of the second plate in contact with the bottom wall of the groove, the third surface being opposite to the second surface, and the hardness of the first plate being greater than that of the second plate; controlling the rotation of the first roller and the second roller (2) to roll-press the first plate and the second plate into a composite plate (5), wherein during the rolling process, the fourth surface (32) of the first plate is in contact with the surface of the second roller, the fourth surface being opposite to the first surface. This method for composite processing of metal materials avoids the generation of burrs and flash on the sides of the composite plate by placing the first plate and the second plate in a groove for processing.
Owner:JIANGYIN KANGRUI MOLDING TECH CO LTD

Method for preparing clad plate strip by adopting hot continuous rolling process and clad plate strip

The invention discloses a method for preparing a clad plate strip by adopting a hot continuous rolling process and the clad plate strip. The method sequentially comprises the steps of plate blank heating, rough rolling, clad blank preparation, clad rolling, controlled cooling and coiling, wherein a plate blank is subjected to surface polishing after being subjected to rough rolling and dephosphorization, then is subjected to preliminary covering and welding with a to-be-covered plate strip to form a covering blank, and then enters a finishing mill group to be subjected to covering rolling; the surface polishing of the plate blank, the preliminary covering of the to-be-covered coil and the welding are all carried out in an atmosphere protection cover, and N2, CO2 or a mixed gas of N2 and CO2 is introduced into the atmosphere protection cover; the plate blank is made of carbon steel; and the plate strip to be covered comprises titanium, copper or stainless steel. According to the invention, the hot continuous rolling process is adopted to produce the clad plate strip on line, the clad plate strip integrates the excellent characteristics of corrosion resistance, electric conduction, heat dissipation and beauty of the clad layer and high strength of the substrate, and the cost is lower and the application range is wider to the greatest extent; the product has the characteristics of corrosion resistance, good heat dissipation performance, easiness in cold forming processing, attractive appearance and no coating.
Owner:BAOSHAN IRON & STEEL CO LTD

Rolling equipment machine deterioration diagnosing device

A deterioration diagnosing device of a rolling equipment machine includes an input / output data obtaining unit, a model identifying unit, a monitoring parameter calculating unit, a monitoring parameter usage determining unit, a representative value calculating unit, a representative value storage unit, and a deterioration diagnosing unit. The monitoring parameter usage determining unit includes a categorized monitoring parameter acquiring function for acquiring the monitoring parameters, so as to be classified according to categories designated depending on a rolling condition. The representative value calculating unit calculates a representative value of monitoring parameters from a predetermined time period corresponding to each of the categories. The representative value storage unit accumulates, with respect to each of the categories, the representative values over a learning period designated from a start of a monitoring process. The deterioration diagnosing unit includes a categorized deterioration determining function that determines presence / absence of deterioration with respect to each of the categories.
Owner:TMEIC CORP

Preparation method of aluminum-lithium alloy plate and aluminum-lithium alloy plate

The invention relates to the technical field of aluminum-lithium alloys, in particular to a preparation method of an aluminum-lithium alloy plate and an aluminum-lithium alloy. The preparation method of the aluminum-lithium alloy plate comprises the following steps that a cast ingot structure is pretreated, specifically, a flat cast ingot with the side edge in a concave shape serves as a raw material, and sand blasting treatment is conducted on the side edge of the flat cast ingot at the pressure of 0.7-1.0 MPa; arranging a thermal insulation coating on the side edge of the flat cast ingot; the ingot casting structure is processed, specifically, the pretreated ingot casting structure is heated and then subjected to heat preservation; then rolling is conducted, and when single-pass small-deformation rolling is conducted till the total deformation reaches 25%-35%, conventional rolling is recovered; and after rolling is completed, solid solution quenching, pre-stretching and aging treatment are conducted in sequence. The aluminum-lithium alloy plate product prepared through the method is free of edge cracking, high in yield and excellent in comprehensive performance, and the requirement of aerospace for the aluminum-lithium alloy plate can be better met.
Owner:HUNAN ZHONGCHUANG AEROSPACE NEW MATERIAL CO LTD

A method of controlling segregation in platinum-rhodium alloys

The application provides a method for controlling segregation of platinum-rhodium alloy, and steps are as follows: (1) vacuum medium-frequency induction melting and stirring: platinum-rhodium alloy is melted and stirred; (2) controlling pouring temperature: alloy melt temperature is reduced to 30-50 DEG C above melting point, and is kept warm; (3) rapid solidification: alloy melt is poured into water-cooled red copper mould and solidified; (4) homogenizing annealing: cast ingot is put into high-temperature furnace and homogenized annealing; (5) rolling strip: cast ingot is rolled into thin strip; (6) laminated thermal diffusion: thin strip is cut, washed and laminated to required thickness, and is hot-diffused and kept pressure, and is pressed into block-shaped alloy ingot; (7) rolling plate: block-shaped alloy ingot is rolled into plate.The method for controlling segregation of platinum-rhodium alloy reduces component segregation through low-temperature pouring and rapid solidification, eliminates intracrystalline segregation by homogenizing annealing, eliminates regional segregation by rolling strip and laminated thermal diffusion, and finally obtains platinum-rhodium alloy plate with uniform microstructure.
Owner:ITP CO LTD(CN)

High-strength high-toughness hydrogen embrittlement resistant composite steel and method for manufacturing the same

The application provides a high-strength and high-toughness hydrogen embrittlement resistant composite steel and a preparation method thereof. The preparation method of the composite steel comprises the following steps: obtaining a composite steel material by vacuum hot rolling of a martensitic steel and an austenitic steel in a sheath, the top layer and the bottom layer are both the martensitic steel, the middle part is the alternately stacked martensitic steel and austenitic steel, and the upper surface of the martensitic steel of the top layer and the lower surface of the martensitic steel of the bottom layer are hydrogen embrittlement resistant austenitic stainless steel. The preparation method of the application realizes a material system with high strength, high toughness and excellent hydrogen embrittlement resistance in a hydrogen-rich environment by constructing a multi-layer composite steel structure and optimizing the preparation process. The core part is high-strength martensitic hot forming steel and high-plasticity austenitic steel which are alternately compounded to form a strength and toughness synergistic structure; the upper and lower surfaces are made of low-cost hydrogen embrittlement resistant austenitic stainless steel, which effectively prevents hydrogen atoms from penetrating and inhibits crack propagation, and overcomes the mutual restriction among strength, toughness and hydrogen embrittlement resistance of single metal material.
Owner:NORTHEASTERN UNIV CHINA

A multiple silver-copper lateral composite strip for high-voltage fuse and its preparation method

The present invention discloses a plurality of silver-copper lateral composite strips for high-voltage fuses and a preparation method thereof. The method comprises: regulating the properties of the pure copper and pure silver composite components through microalloying to improve the oxidation resistance of the pure copper and to make the deformation properties of the silver and copper components more similar; preparing the microalloyed copper and pure silver into copper bars and silver bars through continuous casting, vacuum melting, and rolling; then slotting the copper bars and coating the composite interface with the silver alloy bars with an organic additive to prepare a composite blank; initial rolling on a two-roll mill to bring the bonding interface into close contact; then sintering in a protective atmosphere to form an interface layer; and finally, subjecting the sintered composite blank to intermediate rolling, diffusion annealing, rolling, pre-finish heat treatment, and finish rolling to prepare a plurality of silver-copper lateral composite strips; and slotting the copper bars along their length. The method employs an organic additive to treat the silver-copper composite interface, thereby resolving the problem of easy oxidation at the composite interface. The silver-copper composite interface is securely bonded, while requiring minimal equipment and being suitable for mass production.
Owner:YUNNAN PRECIOUS METALS LAB CO LTD

Roller state monitoring device

The roll condition monitoring device is provided with: a rolling load detecting mechanism configured to detect a rolling load signal of a monitoring object roll selected from among an upper roll set including at least one roll and a lower roll set including at least one roll, in a case where a roll material is rolled between the upper roll set and the lower roll set; a signal extracting mechanism configured to extract a rolling load high frequency signal having a frequency of a predetermined prescribed frequency or more from the rolling load signal; and a roll condition determining mechanism configured to determine a condition of the monitoring object roll based on a test result of a statistical test method for a plurality of rolling load values included in the rolling load high frequency signal.
Owner:TMEIC CORP (100 00)

Rolling cassette for rolling a metal wire and corresponding method

A rolling cassette (10) for rolling a metal wire (100) comprises a body (11) equipped with a structural frame (12) and defining a cavity inside it to house a plurality of rolling rolls cooperating with each other to deform the metal wire (100). The rolling cassette (10) comprises a lubrication system to lubricate both the metal wire (100) and also the mechanical members on which the rolling rolls are mounted with a lubricating agent.
Owner:EUROLLS SPA

Blow evaporator aluminum plate blow pipe graphite cover board equipment

The application discloses a graphite cladding device for an inflation evaporator aluminum plate inflation pipeline, which comprises an oven, a clamping assembly, a turnover assembly, a pushing assembly, a rotating assembly, a positioning assembly and a cladding assembly. The oven is used for drying and transmitting the first and second raw aluminum plates in sequence to the rotating assembly. The rotating assembly comprises a rotating roller, one side of the rotating roller is provided with a follow-up roller, and the two ends of the rotating roller are fixedly connected with inclined baffles. The follow-up roller rotates around the rotating roller as an axis to form state one and state two. The side of the rotating roller away from the oven is provided with a driving roller. The follow-up roller and the driving roller are on the same vertical line when in state one. The pushing assembly is arranged on the lower side of the rotating assembly. The first raw aluminum plate after drying first contacts the inclined surface of the inclined baffle in state one and moves to fall on the pushing assembly. The application realizes the automatic cladding function conveniently and efficiently.
Owner:CHANGZHOU CHANGZHENG EVAPORATOR CO LTD

Auto-calibration and real-time communication of data, problems, damage, maneuvers, and errors from a network of battery-powered smart guide nodes within the rolling mill

A system for use in a rolling mill is disclosed that includes (a) a roll holder housing a plurality of rollers, and (b) a smart module coupled to the roll holder that includes (1) a power source for powering the smart module, (2) a microcontroller, (3) a motor for moving the roll holder and thereby controlling the position of the plurality of rollers based on instructions from the microcontroller, (4) one or more position sensors for detecting the position of the roll holder, and (5) a communications module that communicates with a central control computer to (i) communicate the position of the roll holder and other sensor data to the central control computer and (ii) receive instructions from the central control computer for controlling the position of the roll holder.
Owner:PRIMETALS TECHNOLOGIES USA LLC

Manufacturing method for metal products

The present invention provides a method for manufacturing metal products that can produce metal products that can ensure the desired performance. [Solution] A method for manufacturing a metal product includes a groove forming step of forming a plurality of grooves 3 by cutting the electrode material 2 in a metal body 10 having a resistive material 1 and an electrode material 2 laminated on the resistive material 1; a rolling step of rolling the metal body 10 with shape-retaining members 4 provided in each of the plurality of grooves 3; and a shape-retaining member removal step of removing the shape-retaining members 4 after the rolling step.
Owner:JCM CO LTD(JP) +1

Method for providing inserts for backup rolls and / or work rolls of a roll stand and system having an apparatus for providing inserts for backup rolls and / or work rolls of a roll stand

The present invention relates to a method for providing backup rolls and / or inserts (1) for work rolls of a roll stand required during roll change. In order to simplify the logistics during the replacement of the rolls of the roll stand, particularly the backup rolls, and to shorten the replacement time, the method comprises: a) assembling at least one insert (1), preferably at least two or three inserts (1), into an insert pack (2) at a first position remote from the roll stand; b) moving the insert pack (2) to a carrier element (3) at the first position; c) transporting the carrier element (3) together with the insert pack (2) from the first position to a position near the roll stand; d) removing the insert pack (2) from the carrier element (3) at the position near the roll stand; and e) using the insert (1) during roll change. Furthermore, the present invention relates to an apparatus therefor.
Owner:SMS GROUP GMBH

Skew rolling assembly and method suitable for large-size superalloy bars

Disclosed is a skew rolling assembly suitable for large-size superalloy bars, including four rollers with completely identical shape and size, where the four rollers are all active rollers. In the production process, the four rollers play a role in promoting the forward flow of blank metal in a rolling direction, thus avoiding a rolling jamming phenomenon caused by the obstruction of guide plates to the forward flow of the blank in the rolling process of the prior art. The providing of the four rollers improves the rolling speed and increases the degree of deformation. Disclosed is a skew rolling method suitable for large-size superalloy bars. By utilizing the skew rolling assembly suitable for the large-size superalloy bars, and utilizing four rotating active rollers for the skew-rolling forming of bars, the rolling speed is improved, the problem that the cooperative rolling of two rollers and guide plates in the prior art is prone to the phenomenon of rolling jamming is avoided, the forming quality is guaranteed, the rolling production efficiency is improved, and the degree of deformation is increased.
Owner:ANHUI HANGON PRECISE ROLLING CO LTD

A method for preparing a copper-based composite material with uniform diamond particle reinforcement

This invention relates to the technical field of composite material preparation, specifically to a method for preparing a diamond particle uniformly reinforced copper-based composite material. The steps are as follows: diamond particles are uniformly coated onto the surface of a pure copper sheet, and uncoated pure copper sheets are stacked and rolled; after each rolling pass, the copper sheet is folded in half and then rolled again; the resulting sample is hydraulically compressed to a certain deformation, wherein the hydraulic compression direction is perpendicular to the rolling direction; the resulting sample is hot-rolled at a certain temperature, then cooled to room temperature, and the above steps are repeated multiple times. The sample after the final cooling is taken, and surface impurities are removed to obtain the diamond particle uniformly reinforced copper-based composite material. The diamond particle uniformly reinforced copper-based composite material prepared by this invention is dense, has good interfacial bonding, and the diamond particles are uniformly distributed in the matrix. It exhibits good thermal conductivity and a low coefficient of thermal expansion, showing promising application prospects in the field of electronic packaging materials.
Owner:WUHAN UNIV

Ultrasonic-assisted interface micro-melting warm rolling method for magnesium / titanium composite plate with large thickness ratio

The application belongs to the field of rolling of composite plates, and particularly relates to a large-thickness-ratio magnesium / titanium composite plate ultrasonic-assisted interface micro-melt warm rolling composite method, which comprises the following steps: S3, installing an upper roller heating device above the upper roller and a lower roller heating device below the lower roller, starting the upper roller heating device and the lower roller heating device to respectively rotate and heat the upper roller and the lower roller, starting a rolling mill to make the upper roller and the lower roller rotate at a speed of 1.8-2.4 r / s, making the upper roller and the lower roller have uniform temperature in the circumferential direction, and starting the rolling of the composite plate blank after the upper roller and the lower roller are heated to the specified temperature respectively; the upper roller heating device and the lower roller heating device are used to heat the upper roller and the lower roller respectively, so that the upper roller and the lower roller have a certain temperature, and the temperature of the composite plate blank is prevented from being reduced due to heat dissipation of the upper roller and the lower roller in the rolling deformation area during the rolling of the composite plate, so that the composite forming of the composite plate blank is affected.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY +1

Stainless steel clad steel sheet for bridge structures and method for manufacturing the same

This invention discloses a stainless steel clad steel plate for bridge structures and a method for manufacturing the same. In the above method, the plate is assembled using an upper carbon steel material A, a lower carbon steel material B, at least two stainless steel clad materials as an intermediate layer, and four sealing materials surrounding the four sides of the intermediate layer. Circular through holes are provided in the sealing materials, and steel pipes are welded into the through holes. A cavity is left around the steel pipes during build-up welding. After vacuum drawing, the steel pipes are folded into the remaining cavity, and then welded to seal the steel pipes within the cavity. The first n passes in the entire rolling process are widthwise rolling, followed by longitudinal rolling. After the nth pass and after the n+2th pass, the material is water-cooled once in a reciprocating motion using six sets of headers.
Owner:INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2

Preparation method of composite board with excellent interface bonding

The invention provides a preparation method of a composite board with excellent interface bonding, which comprises the following steps: if the processing and using temperature of the composite board is less than or equal to 200 DEG C, polishing one side surface of a base material blank until the roughness is 0.02 T + 0.05 t + 0.5 CR <-5 >-0.02 T + 0.05 t + 0.5 CR, T is a preset heat treatment temperature unit of DEG C, t is a total heat treatment time unit of min, CR is a preset total compression ratio, and if multiple heat treatments are needed, T is a maximum value; if the processing and using temperature of the composite board is higher than 200 DEG C, the surface of one side of the base material blank is polished into a wave shape, the vertical distance between the wave crests and the wave troughs is 0.1 T-85-0.1 T-80, the unit is mm, the horizontal distance between the wave crests is 100-12.5 lnT-110-12.5 lnT, and the unit is cm. The surface of the base material blank is subjected to different treatments through different processing use temperatures, so that the bonding strength of the base material and the covering material is guaranteed.
Owner:INST OF RES OF IRON & STEEL JIANGSU PROVINCE +3

Production method of 625 / X65 / 625 double-sided nickel base alloy layered composite plate

The invention relates to a production method of a 625 / X65 / 625 double-sided nickel base alloy layered composite plate. The production method comprises the following steps: (1) selecting an assembly raw material; (2) polishing the surface to be contacted; (3) forming a 625 / X65 / 625 composite blank; (4) end face coping; (5) carrying out lap-joint seal welding and vacuumizing; (6) heating for the first time; (7) rolling for the first time; (8) heating for the second time; (9) carrying out a second round of rolling; and (10) trimming to obtain the 625 / X65 / 625 nickel base alloy layered composite plate with the target specification. According to the 625 / X65 / 625 double-sided nickel base alloy layered composite plate produced through the method, the synchronous deformation rate of base layer metal and composite layer metal is high, the plate shape is flat, the composite interface performance is high, stability is good, compared with a 625 alloy plate, the economic cost is obviously reduced, the production process is simple, and the method is suitable for industrial large-scale production of flat plates and rolled plates.
Owner:ANSTEEL BEIJING RES INST CO LTD +1