373results about "Auxillary arrangements" patented technology

The invention discloses a rolling and annealing treatment process for a copper-steel composite strip, and relates to the technical field of material rolling, the process comprises the following steps: selecting a high-purity copper plate and a stainless steel plate, and depositing a nano nickel / graphene composite transition layer through a magnetron sputtering technology; the stainless steel layer is promoted to deform through front-section low-speed high-pressure rolling, and the copper layer interface bonding force is improved through rear-section high-speed low-pressure rolling; performing short-time local annealing by using a high-frequency induction coil; honeycomb-shaped micro-pits are formed in the stainless steel surface through the laser micro-texture technology, and the interface bonding force is improved in combination with the nano-nickel / graphene layer. Copper layer hardening is eliminated through low-temperature annealing, stainless steel recrystallization is promoted through medium-temperature annealing, and a nanometer precipitated phase is fixed through rapid water cooling; the heating rate is controlled, and nitrogen-hydrogen mixed gas is used for preventing oxidation; the rolling process and the annealing process are seamlessly connected, and the temperature, the stress and the atmosphere are detected in real time through an online monitoring system. The mechanical property, the corrosion resistance and the machining stability of the copper-steel composite strip are remarkably improved.

The invention discloses a method for rolling a thin-gauge ultra-wide TC4 titanium alloy plate through one heating number, the thin-gauge ultra-wide TC4 titanium alloy plate is obtained through the processes of EB slab ingot, explosive cladding, plate blank heating, one heating number rolling, straightening and annealing, the plate width of the thin-gauge ultra-wide TC4 titanium alloy plate is 3500-4300 mm, the plate thickness of the thin-gauge ultra-wide TC4 titanium alloy plate is 20-30 mm, the microstructure of the thin-gauge ultra-wide TC4 titanium alloy plate is an alpha + beta double-state structure, and the thickness of the thin-gauge ultra-wide TC4 titanium alloy plate is 20-30 mm. The method has the advantages of good plate surface quality, wide plate breadth, small longitudinal and transverse mechanical property difference and the like.

The invention relates to the technical field of metal composite material rolling, and discloses equipment and a process for hot-warm wave flat rolling of a titanium steel composite plate. The rolling assembly comprises a first rolling piece and a second rolling piece, and a plate is firstly subjected to corrugated rolling through the first rolling piece and then subjected to flat rolling through the second rolling piece; the straightening part is used for straightening the plate subjected to corrugated rolling; the conveying part is arranged on the rack, located above the first rolling part and used for stably conveying the heated plate; and the heating assembly comprises a heat preservation piece and two heating pieces, the two heating pieces are arranged on the first rolled piece and the second rolled piece correspondingly and used for heating the plate materials before rolling, and the heat preservation piece is arranged on the conveying piece and used for conducting heat preservation on the conveyed plate materials. According to the invention, the bonding strength of the composite plate is improved, the residual stress of the rolled plate is reduced, the phenomena of tail slippage, tail cracking, oxidation and the like of the plate are avoided, and the phenomenon of surface cracking caused by poor metal plasticity is avoided.

The invention discloses a method for predicting the thickness of a composite layer of a composite board and related equipment, and relates to the technical field of composite board rolling, and the method comprises the following steps: obtaining assembly thickness data and target hot rolling process parameters of a to-be-measured composite board; inputting the assembly thickness data and the target hot rolling process parameters into a prediction model, and predicting the thickness of the composite plate to obtain a total thickness prediction value after cooling after hot rolling is finished; and based on the total thickness predicted value, calculating to obtain a composite layer thickness predicted value of the composite board. By fusing the assembly data, the hot rolling process parameters and the machine learning algorithm, online prediction and dynamic regulation and control of the thickness of the multi-layer are achieved.

The invention discloses a high-strength copper-steel double-metal composite material and a preparation method of the high-strength copper-steel double-metal composite material. Copper and steel base materials for preparing the high-strength copper and steel double-metal composite material are selected; the copper base material and the steel base material are welded through the electron beam additive manufacturing technology; scanning a welding seam of the copper-steel bimetallic composite material by using an ultrasonic detection system; analyzing and processing the scanned image through a computer; carrying out secondary treatment on the copper-steel double-metal composite material by adopting a rolling compounding method; carrying out quenching treatment on the copper-steel double-metal composite material; inspecting the performance of the high-strength copper-steel bimetallic composite material; and storing the prepared data to a cloud end through a computer. According to the method, the electron beam additive manufacturing technology and the rolling composite method are combined, the strength of the copper-steel composite material can be improved in the preparation process, the composite material is detected through an ultrasonic detection system, the percent of pass of the composite material can be screened, and the performance of the composite material can be further enhanced through annealing treatment.

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.

The invention belongs to the technical field of titanium-steel composite plates, and particularly relates to a production process for preventing grain growth of a titanium-steel composite plate, which comprises the following steps: roughening the lower side surface of a titanium plate and the upper side surface of a steel plate by adopting a sand blasting process; an additive is sprayed to the upper side face of the steel plate and the lower side face of the titanium plate, the additive comprises boron powder and a binding agent, graphite foil is laid on the upper side face of the steel plate sprayed with the additive, the titanium plate sprayed with the additive is stacked on the steel plate, and the graphite foil is clamped by the upper side face of the steel plate and the lower side face of the titanium plate to prepare a composite plate blank; sealing the edge part of the composite plate blank by using a sealing material; the production process comprises the following steps: heating a composite plate blank through a heating furnace, rolling and cooling the heated composite plate blank, straightening the composite plate blank through a straightening machine, and trimming the straightened composite plate blank to obtain the titanium-steel composite plate. And the bonding strength and the shearing strength of the titanium steel composite plate are improved.

The invention discloses a production method of a T2+Q355B copper steel rolled composite plate. The technological process comprises the steps of assembling, heating, rolling, stack cooling, finishing, flaw detection and warehousing. A T2 + Q355B copper steel rolled composite plate with excellent bonding strength, mechanical property and conductivity is obtained by adopting a vacuum rolling composite technology, a symmetric assembly technology and a low-speed deformation technology and utilizing wide and thick plate production line equipment and technical advantages, the thickness of a base material ranges from 5 mm to 40 mm, the thickness of a composite layer ranges from 1 mm to 20 mm, the width is smaller than or equal to 3600 mm, the yield strength is larger than or equal to 250 Mpa, the tensile strength ranges from 350 Mpa to 600 Mpa, the shear strength is larger than or equal to 120 Mpa, and the composite layer T2 copper conductivity IACS is larger than or equal to 85%. The intergranular corrosion crack rate is 0. The product can be widely applied to the fields of high-voltage electric appliances, ship manufacturing, new energy equipment and the like, and has the potential of replacing traditional products.

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.

The invention discloses a preparation method of a clad steel plate, the clad steel plate prepared by the preparation method and application of the clad steel plate. The composite steel plate comprises a base plate layer and a covering layer, a single face of the covering layer is composited on the base plate layer, the base plate layer is made of weathering resistant steel, and the covering layer is made of stainless steel. The preparation method comprises the first step of pretreatment, the second step of assembly, the third step of seal welding, the fourth step of hot rolling, the fifth step of cooling and coiling treatment and the sixth step of heat treatment, vacuum electron beam welding is adopted in the third step, and differential multi-pass rough rolling and multi-pass finish rolling are adopted in the fourth step. The interface bonding rate of the composite steel plate provided by the invention reaches 100%, and the strength, the elongation, the impact property and the bending property are uniform and stable and are all higher than the standard requirements of steel for the truck body.

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.

The invention aims at disclosing a forming process and a hot rolling device of a high-thermal-conductivity titanium-aluminum composite plate, and relates to the technical field of titanium-aluminum composites.The forming process comprises the following steps that S1, laser texturing is conducted on the surface of a TC4 alloy titanium plate so as to remove an oxide layer on the surface of the TC4 alloy titanium plate, and the roughness of the surface of the TC4 alloy titanium plate is textured to Ra2.0 micrometers to Ra3.0 micrometers through laser; s2, the TC4 alloy titanium plate and the high-strength aluminum plate are prepared into a composite plate through a hot rolling composite technology, and the titanium face of the composite plate faces the ground; s3, the hot-rolled composite plate passes through a guide roller in an upward inclined mode and then is discharged in an inclined downward mode; s4, the discharged composite plate is cut into a plurality of plates with the same size according to the set size, and the plates are arched; the method has the beneficial effects that oxides on the surface of the TC4 alloy titanium plate are removed through laser texturing, new titanium alloy is exposed, metal bonding and mechanical meshing of a titanium-aluminum interface are remarkably enhanced, and the heat conduction performance and bonding strength of the composite plate are fundamentally improved.

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.

The invention provides a dissimilar metal compounding method for rolling separation of a corrugated roller and a flat roller, and relates to the technical field of metal composite plate preparation. The method comprises the steps that firstly, a corrugated roller is used for rolling a base material, and the corrugation morphology is accurately transferred; then pollutants and oxide layers on the surfaces of the corrugated plate and the covering plate are removed; oppositely assembling the corrugated characteristic surface of the base plate and the flat and straight surface of the covering plate after surface treatment to form a to-be-compounded blank; and finally, the composite blank is rolled through a flat roller in a one-pass or multi-pass mode, and the dissimilar metal composite plate is obtained. According to the method, the surface corrugation characteristics of the base material are prefabricated through the roller, flat roller composite rolling is conducted after dissimilar metal assembly, and the phenomena that deformation and impermeability are caused by the thickness and hardness influence of a covering material when the corrugation form is conducted to a composite interface through direct corrugation rolling of the combined blank, and the interface corrugation characteristics are not obvious are avoided; and the interface bonding area and the bonding strength can be obviously increased.

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.

The invention relates to a hot rolling composite process for improving the strength of a low-alloy high-strength steel / nickel-based alloy bimetal composite plate, and belongs to the technical field of materials. Firstly, a welded assembly is subjected to heat preservation for 2-4 h at the temperature of 1250 DEG C, large-deformation rolling is adopted at the temperature higher than 1000 DEG C after discharging, the rolling reduction of each pass is larger than or equal to 20%, and in the stage, a composite plate is rolled to be 70% or above of the target thickness; and when the temperature is 900-1000 DEG C, rolling to a target thickness by adopting small deformation, and then cooling to room temperature in air. Effective metallurgical compounding of the bimetallic material can be realized by using the hot rolling compounding process, the obtained bimetallic compound interface is flat and straight and has no metallurgical defects such as pores and cracks, the interface of a sample subjected to three-point bending is still well compounded, and cracks are not generated macroscopically and microcosmically. According to the hot rolling composite technology, the back stress strengthening effect of a composite interface can be fully exerted, meanwhile, the proportion of dynamic recrystallization grains in the nickel-based alloy is reduced, and the strength of a nickel-based alloy layer is improved.

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.

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.

The invention relates to the technical field of rolling equipment, in particular to non-ferrous metal composite plate strip rolling equipment which comprises a shell, a plurality of supports are installed on the inner wall of one side of the shell, and round rollers are rotationally arranged on the inner walls of the supports. The rolling mechanism is arranged in the shell; the rolling mechanism comprises a first gear and a second gear which are rotationally arranged on the outer wall of the shell, rolling rollers are fixedly connected to the inner walls of the first gear and the second gear, and a collecting frame is fixedly connected to the outer wall of the other side of the bottom of the shell. Stress generated in the rolling process can be evenly distributed through continuous pressing, the stress concentration phenomenon is reduced, continuous pressing is continuously carried out and is synchronous with the rolling process, rolling of the positioning frame and the positioning belt is stable and even, deviation of materials during rolling is avoided, the quality and consistency of finished products are improved, the service life of equipment is prolonged, and the production cost is reduced. And the rolling efficiency of the non-ferrous metal composite plate and strip rolling equipment is improved.

The invention discloses a laminate processing method and a production line, and relates to the technical field of laminate processing, and the method comprises the following steps: matching unwinding control parameters of corresponding unwinding equipment based on material parameters and processing attributes of metal sheets so as to convey the metal sheets into a polishing machine; corresponding polishing information is determined on the basis of roughness analysis and polishing influence analysis of the metal sheets, and the polishing machine polishes the metal sheets on the basis of the polishing information; the first heating device preheats the polished metal sheets on the basis of a first self-adaptive controller; calendaring the preheated metal sheets by a calendaring device to obtain an initial laminate; the second heating device reheats the initial laminate based on the second self-adaptive controller; the shearing mechanism is used for shearing the initial laminate subjected to reheating treatment to obtain a target laminate, and the winding machine is used for winding the target laminate. According to the invention, a complete process of laminate processing is formed, so that the quality of the obtained target laminate is more reliable.

The invention discloses a processing method for improving the performance of an aluminum alloy based on accumulative pack rolling, which successfully prepares an ultra-fine grain material as high as 7 passes through an accumulative pack rolling process in severe plastic deformation, while along with the increase of the passes, the strength of a sample is continuously improved, the plasticity is continuously reduced, and although in a higher pass, the strength of the sample is continuously improved, and the plasticity is continuously reduced. Due to the fine grain strengthening effect, plasticity slowly rises, but the industrial requirements cannot be met. In order to better improve the comprehensive performance of the rolled product, two different heat treatment modes of aging and solid solution-aging are further developed, after heat treatment, the strength and plasticity of the obtained product are improved, the overall performance of the product is superior to that of an original plate, and a new thought is provided for improving the performance of the AA6061 aluminum alloy.

The invention discloses a preparation method of an electric heating short-distance type copper-aluminum composite board, which comprises the following steps of: preparing a protection tunnel, arranging a feed port and a discharge port at the front end and the rear end of the protection tunnel, pulling an aluminum plate strip and a copper plate strip into the protection tunnel, and enabling the aluminum plate strip to be in sliding contact with a high potential in the protection tunnel, an aluminum plate strip is used as a base strip to be overlapped with a copper plate strip in a deviation rectifying mode to form a pre-rolled plate strip, a roller of a rolling mill makes contact with a low potential, then inert gas and hydrogen are continuously introduced into a protection tunnel, the pre-rolled plate strip is electrified through the high potential and the low potential, and the pre-rolled plate strip is heated through low voltage and large current; and sealing at the feed port and the discharge port through continuous flame, rolling the pre-rolled plate strip into a composite plate strip under the traction of a rolling mill, annealing the composite plate strip, and performing cold rolling to obtain the copper-aluminum composite board. Compared with the prior art, oxide generation can be effectively reduced, the plate strip heating efficiency is improved, and the quality stability of the copper-aluminum composite plate obtained through hot rolling compounding is high.

The present invention relates to the technical field of metal composite materials, and particularly relates to a titanium-aluminum-titanium laminated metal composite plate and its processing method and application. The titanium-aluminum-titanium laminated metal composite plate includes a metal composite plate body, and the metal composite plate body includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer; a first interface transition layer is formed between the first titanium metal layer and the aluminum metal layer, and a second interface transition layer is formed between the second titanium metal layer and the aluminum metal layer; the thickness of the metal composite plate body is 0.05 - 0.2 mm. The metal composite plate body is formed by pouring molten aluminum liquid between two solid titanium sheets after thinning treatment, and after solidification, it is successively subjected to diffusion heat treatment and rolling. The thickness of the present invention can be controlled between 0.05 - 0.2 mm, and the ultra-thin thickness makes the composite plate have light weight, high flexibility and excellent mechanical properties, and is suitable for fields with strict requirements on weight and volume. This metal composite plate not only has high strength and good electrical conductivity, but also has excellent corrosion resistance.

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.

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.

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.

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.

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.