497results 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 relates to the technical field of metal composite materials, in particular to a titanium-aluminum-titanium layered metal composite plate and a machining method and application thereof. The titanium-aluminum-titanium layered metal composite plate comprises a metal composite plate body, wherein the metal composite plate body comprises 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 ranges from 0.05 mm to 0.2 mm. The metal composite plate body is formed by pouring molten aluminum between two solid titanium sheets subjected to thinning treatment, and after solidification, diffusion heat treatment and rolling are sequentially carried out. The thickness can be controlled between 0.05 mm and 0.2 mm, the ultrathin thickness enables the composite board to have light weight, high flexibility and excellent mechanical performance, and the ultra-thin composite board is suitable for the field with strict requirements for weight and size. The metal composite plate not only has high strength and good conductivity, but also has excellent corrosion resistance.

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 rolling method of a corrugated roller and a rolling system of the corrugated roller, relates to the field of bimetal laminated plate preparation, and aims to solve the problem that a metal laminated plate is easy to crack in the machining process. The rolling method comprises the steps that a plate blank is fed into two corrugated rollers arranged at an interval to be rolled, so that a first double-metal laminated plate is formed, and the upper surface and the lower surface of the first double-metal laminated plate and the bonding interface of the plate blank are all latticed wavy surfaces; the first double-metal laminated plate is fed into two flat rollers arranged at an interval to be rolled, so that a second double-metal laminated plate is formed, the upper surface and the lower surface of the second double-metal laminated plate are both planes, and the bonding interface is a latticed wavy surface; and carrying out annealing treatment on the second bimetal laminated plate. The corrugated structure on the corrugated roller is reflected to the bonding interface between the base plate and the compound plate, and then secondary rolling is performed through the flat roller, so that the bonding strength of the second double-metal laminated plate is improved, and the forming quality and the yield of the metal laminated plate are guaranteed.

The invention discloses a preparation method of a stainless steel layered composite plate, which comprises the following steps: (1) grinding the surfaces of a stainless steel plate and a carbon steel plate which need to be compounded, then forming air exhaust holes in the edges of the opposite positions of the same ends of the stainless steel plate and the carbon steel plate, and laminating the stainless steel plate and the carbon steel plate to form an initial layered plate; (2) sealing and welding the periphery of the initial laminated plate; (3) the initial layered plate is subjected to air exhaust treatment through the air exhaust holes, and a layered composite plate blank is obtained; and (4) carrying out hot isostatic pressing treatment on the layered composite plate blank, after the hot isostatic pressing treatment is finished, carrying out pressure relief, cooling, discharging and air cooling to room temperature, then carrying out heating and hot rolling treatment, and finally straightening. By means of the method, the stainless steel layered composite plate with the large-range thickness can be prepared, the plate shape is good, stainless steel and carbon steel form compact and inclusion-free metallurgical bonding, the bonding strength reaches 360 MPa or above, the tensile strength and impact toughness of the composite plate are good, and the stainless steel intergranular corrosion performance is qualified.

The invention provides a preparation method of a copper-aluminum composite board, which comprises the following steps: S1, carrying out rolling processing on a copper plate, and processing a plurality of embossments on the surface of the copper plate; s2, sequentially carrying out alkali washing, annealing treatment and acid washing on the rolled copper plate; s3, a hot-rolled aluminum plate is selected, and the surface of the aluminum plate is mechanically polished; s4, the floating convex face of the pickled copper plate and the mechanical polishing face of the aluminum plate are attached and assembled, mechanical combination of a copper-aluminum interface is achieved through single-pass large-rolling-reduction cold rolling, and a composite plate is obtained; and S5, the composite board is subjected to diffusion heat treatment, and the copper-aluminum composite board is prepared. According to the method, the copper-aluminum composite board with the high interface bonding strength can be manufactured through traditional equipment, and the method has the advantages of being low in production cost, simple in process and easy to industrially popularize.

The invention discloses a rolling method for a high-uniformity Ti650 high-temperature titanium alloy sheet. The rolling method comprises the steps that S1, a Ti650 alloy ingot is subjected to cogging forging and circulating forging; s2, after a pure titanium plate is welded to the surface of the obtained intermediate forging blank, heating and heat preservation are conducted, and a first semi-finished plate blank is obtained through first-fire rolling; s3, the first semi-finished plate blank is subjected to edge cutting, saw cutting, heating, heat preservation and secondary fire rolling, and a second semi-finished plate blank is obtained; s4, the second semi-finished plate blank is subjected to grinding, edge cutting and saw cutting, then heating and heat preservation are conducted, and third-fire rolling is conducted to obtain a third semi-finished plate blank; s5, the third semi-finished product plate blank is subjected to water cutting sizing and pre-oxidation annealing, and a ply rolling bag is manufactured; and S6, the ply rolling bag is heated, subjected to heat preservation and subjected to fourth fire rolling, and the Ti650 high-temperature titanium alloy plate is obtained after treatment. According to the rolling method of the high-uniformity Ti650 high-temperature titanium alloy sheet, the problems that Ti650 alloy is prone to being damaged, the structure performance is not uniform, and the process is complex are solved.

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 relates to a TA33 titanium alloy fine-grain plate and a preparation method thereof, relates to the technical field of titanium alloy materials, and aims at solving the problem of how to prepare a TA33 titanium alloy fine-grain plate with the thickness of 0.5-0.8 mm. The preparation method comprises the following steps that a TA33 titanium alloy cast ingot is subjected to forging treatment, and a plate blank for rolling is obtained; cogging rolling treatment is conducted on the plate blank for rolling, and a first plate blank with the thickness ranging from 18 mm to 22 mm is obtained; and the first plate blank is rolled, and a second plate blank with the thickness being 6-10 mm is obtained. And the second plate blank is subjected to water quenching treatment. And the plate blank subjected to water quenching treatment is rolled, and a third plate blank with the thickness being 3-4 mm is obtained. And carrying out cladding rolling treatment on the third plate blank. And annealing treatment and post-treatment are conducted on the plate obtained after cladding rolling treatment, and the TA33 titanium alloy fine-grain plate with the thickness ranging from 0.5 mm to 0.8 mm is obtained. The method is used for preparing the TA33 titanium alloy fine-grain plate with the highest use temperature of 600-650 DEG C and excellent comprehensive performance so as to meet the requirement for material selection of thin-wall components of high-sound-velocity aircrafts in the aerospace field.

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 belongs to the technical field of metal composite material preparation, and relates to an ultrasonic-assisted different-temperature aluminum / magnesium / aluminum three-layer composite plate rolling method which comprises the following steps: pretreating a magnesium plate and two pretreated aluminum strips; heating in an induction coil heating furnace to obtain a heated magnesium plate, and welding and sealing edges to obtain two coiled combined aluminum strips; preparing an aluminum / magnesium / aluminum three-layer plate blank; and ultrasonic waves are applied to the rollers, the aluminum / magnesium / aluminum three-layer plate blank is rolled through the upper roller and the lower roller, and the aluminum / magnesium / aluminum three-layer composite plate is obtained. The magnesium plate is heated through the induction coil, the aluminum strip is not heated, so that different-temperature rolling is achieved between the magnesium plate and the aluminum plate, the plasticity difference caused by performance difference of magnesium and aluminum materials can be reduced, an oxide layer on the surface of to-be-bonded metal is broken by applying ultrasonic waves to the roller, and the bonding quality of the to-be-bonded metal is improved. Therefore, dissimilar metals with large plasticity difference are fully combined, and the defects of holes, cracks and the like of the aluminum / magnesium / aluminum three-layer composite board on a composite interface are avoided.

The invention relates to the technical field of stainless steel composite plates, in particular to a stainless steel composite plate for a thick bridge and a preparation method of the stainless steel composite plate for the thick bridge, and the method comprises the following steps: carrying out single assembly treatment to obtain a composite blank, carrying out primary heating and rolling on the composite blank, carrying out secondary heating, controlled rolling and controlled cooling treatment to obtain the composite plate, tempering and straightening; wherein the single-time assembly treatment specifically comprises the steps that beveling and drilling are conducted on the four edges of the to-be-compounded side of the base material to form air exhaust holes, the to-be-compounded face of the clad stainless steel is attached to the base material, then welding sealing is conducted, and vacuumizing treatment is conducted. The problems that the stainless steel composite plate for the high-performance thick-specification bridge is difficult to produce through symmetric assembly rolling and rolling is difficult to achieve through a conventional single assembly are solved, the produced stainless steel composite plate for the bridge is excellent in interface bonding, the shear strength is larger than or equal to 380 MPa, the yield ratio is smaller than or equal to 0.83, the impact Akv of a base material at the temperature of-40 DEG C is larger than or equal to 250 J, and the intergranular corrosion resistance of a covering material is excellent; and the steel plate has good comprehensive performance and plate shape.

The invention provides a method for preparing an aluminum-titanium target by combining roll bonding and warm pressing of a waste aluminum-titanium target, and belongs to the technical field of powder metallurgy. The preparation method comprises the steps that the waste aluminum-titanium target is pretreated to obtain aluminum-titanium target semi-finished products, N pieces of aluminum-titanium target semi-finished products are taken, slurry containing aluminum powder is sprayed to the surfaces of the N pieces or N-1 pieces of aluminum-titanium target semi-finished products, and after spraying is completed, the aluminum-titanium target semi-finished products are obtained; and laminating the N aluminum-titanium target semi-finished products to obtain a composite plate, carrying out ply rolling on the composite plate to obtain a composite target material, and carrying out warm pressing on the composite target material to obtain the aluminum-titanium target material. According to the preparation method, the target materials can be fully diffused in the warm pressing process, the influence of the surface flatness on diffusion is reduced through the pre-pack rolling treatment, the aluminum powder serves as a soft middle layer, the good buffering and joint filling effects are achieved, diffusion is promoted, and the target material welding rate is gt in an optimal scheme; 95%. According to the preparation method, the utilization rate of the target material is increased, the production cost of the target material is reduced, and recycling of the target material is achieved.

The invention discloses a production method of a nickel-based composite pipeline steel plate. A base material comprises the following chemical components in percentage by mass: 0.02%-0.04% of C, 0.05%-0.25% of Si, 1.6%-1.65% of Mn, less than or equal to 0.010% of P, less than or equal to 0.0015% of S, 0.025%-0.050% of Alt, 0.03%-0.060% of Nb, 0.010%-0.020% of Ti, 0.20%-0.25% of Cu, 0.24%-27% of Cr, 0.09%-0.13% of Ni and 0.03%-0.04% of V; the composite material comprises the following chemical components in percentage by mass: less than or equal to 0.05% of C, 0.25%-0.50% of Si, 19.5%-23.5% of Cr, 38%-46% of Ni and 0.28%-0.30% of Co. The N08825 + X70 composite pipeline steel with excellent strength is obtained by adopting a vacuum rolling composite technology, a low-speed deformation technology and an ultra-fast cooling technology, the maximum wall thickness of a base material reaches 45mm, and the thickness of the N08825 is 3mm.

The invention provides a magnesium rolled plate with a layered heterogeneous structure and a preparation method of the magnesium rolled plate, and belongs to the technical field of magnesium alloy material processing. The preparation method comprises the following steps: providing a first magnesium plate; heating the first magnesium plate to form a second magnesium plate; treating the oxide layers on the surfaces of the first magnesium plate and the second magnesium plate; alternately overlapping the first magnesium plate and the second magnesium plate to form a composite plate; the two ends of the composite board are fixed respectively; and the fixed composite board is preheated and then rolled. The preparation method has the effects of improving the preparation efficiency of the lamellar isomeric magnesium rolled plate and reducing the preparation cost of the lamellar isomeric magnesium rolled plate.

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 provides a titanium alloy sheet with a lamellar tissue structure and a preparation method thereof, relates to the technical field of titanium alloys, and solves the technical problem of how to prepare the titanium alloy sheet with the lamellar tissue structure. According to the main technical scheme, the method comprises the steps that a titanium alloy cast ingot is forged, and a plate blank for rolling is obtained; the plate blank for rolling is subjected to heat preservation treatment and then is subjected to rolling treatment, and a first plate blank is obtained; the first plate blank is subjected to heat preservation treatment and then subjected to water quenching treatment, and a plate blank subjected to water quenching treatment is obtained; the plate blank subjected to water quenching treatment is subjected to heat preservation treatment at the beta phase transformation point + / -10 DEG C and then subjected to rolling treatment, and a second plate blank with the microscopic structure of a lamellar structure is obtained; after the second plate blank is made into a wrapping ply rolling bag, wrapping rolling treatment is conducted after heat preservation treatment is conducted at the beta phase transformation point + / -10 DEG C, and a third plate blank is obtained; and the third plate blank is subjected to annealing treatment and post-treatment, and the titanium alloy lamellar tissue structure plate is obtained. The titanium alloy plate with the lamellar tissue structure is mainly prepared, and the using temperature reaches up to 700-750 DEG C.

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.