11473 results about "Rolling mill" patented technology

The invention discloses a method for controlling the planeness of cold-rolling strip steel, which comprises the following steps of: carrying out planeness feed-forward control, planeness feedback control and coordination control between both; detecting the cross-section shape and the planeness of a hot rolling incoming material, and actually-measured rolling technological parameters of each frame in real time based on a profiler configured on a No. 1 frame inlet, wherein the parameters comprise rolling force actually-measured values and plate shape adjusting mechanism actually-measured values, and carrying out the feed-forward control on the planeness of each frame outlet; and actually measuring the planeness of the cold-rolling strip steel based on a plate shape roller configured on an outlet of a cold rolling mill, and intensively carrying out the feedback control on the planeness of a final frame outlet. The method can eliminate the influences of the cross-section shape and the planeness of the hot rolling incoming material and fluctuations of the rolling technological parameters on the planeness of the final frame outlet to improve the planeness quality of the cold-rolling strip steel on the one hand, and can automatically control the planeness of each frame outlet, reduce incidence of abnormal conditions, such as fracture surfaces, deviation and the like, and improve the stability in the production process of tandem cold strip rolling on the other hand.

The invention discloses an integrated control method of cold-rolling strip steel flatness and lateral thickness difference, comprising: moderately and mainly controlling the shape of the strip steel section on the upstream rack of a cold-rolling mill, and mainly controlling strip steel flatness on the downstream rack; based on a profiler configured on a No.1 rack inlet of the cold-rolling mill, actually measuring and hot rolling incoming material section shape and flatness and rolling technological parameter measured values of each rack, wherein the rolling technological parameter measured values comprise rolling force and a plate shape regulating mechanism measured value; actually measuring the cold-rolling strip steel flatness on the basis of a shape meter configured on the cold-rollingmill outlet; performing feed-forward control to the shape of the strip steel section by taking the upstream rack, in particular the No. 1 rack as a key point; and performing feedback control to the strip steel flatness by taking the downstream rack, in particular an end rack as a key point to realize integrated control to the cold-rolling strip steel flatness and lateral thickness difference. Theinvention performs integrated coordination control by the strip steel flatness and section shape and reduces cold-rolling strip steel lateral thickness difference on the basis of further improving cold-rolling strip steel flatness quality.

The invention provides a continuous casting machine sector section for deep pressing of the continuous casting blank solidification tail end and a deep pressing method of the continuous casting machine sector section. The continuous casting machine sector section comprises an upper frame, a lower frame, an upper driving roll, a lower driving roll, a left driven roll set, a right driven roll set, a pressing device and a clamping cylinder, wherein the upper frame, the lower frame, the upper driving roll, the lower driving roll, the left driven roll set, the right driven roll set, the pressing device and the clamping cylinder are arranged on the sector section; the clamping cylinder is used for clamping the upper frame and the lower frame to be kept in a certain set gap; the upper driving roll is connected with the pressing device and connected to the upper frame through a bearing base, the lower driving roll is connected to the lower frame through a bearing base, the left driven roll set and the right driven roll set are located on the two sides of the driving rolls respectively, the left driven roll set is used for clamping a casting blank before pressing, the right driven roll set is used for clamping the casting blank after pressing, and the radio of the diameter of each driving roll to the diameter of each driven roll is 1.1:1 to 2:1. According to the continuous casting machine sector section for deep pressing of the continuous casting solidification tail end and the deep pressing method of the continuous casting machine sector section, the deformation permeability is improved, deformation achieved through the continuous casting machine sector section is equivalent to that achieved by one rolling pass of a twin rolling mill with the large rolling diameter, and the improvement in loosening and segregating of a central zone of the casting blank is facilitated.

Disclosed is a method of either plugging or lining a wellbore or casing using a polymer member into which stored energy or shape memory has been introduced. The shape memory is introduced into the member by reducing its diameter, such as by compressing the member using a rolling mill machine or stretching the member axially. Next, the member is lowered into a desired location in the wellbore or casing and subjected to conditions causing at least partial recovery of the anelastic strain. The conditions causing recovery of the anelastic strain can include heat from the reservoir surrounding the wellbore, heat introduced into the wellbore, solvents, and combinations thereof. Recovery of the anelastic strain causes the member to expand in diameter, thus plugging or lining the wellbore or casing at the desired location.

The invention belongs to the rolling technical field. The thickness of a periodic longitudinal variable-thickness strip changes periodically, the periodic longitudinal variable-thickness strip has more than two kinds of thicknesses regions and transition regions within a change period, and is formed by rolling. The control procedure of the periodic longitudinal variable-thickness strip comprises the following steps: inputting original data; displaying and storing real-time data and a history curve; computing the rolling procedure; generating a change curve; tracking the position of a rolling piece; and controlling the thickness, the speed and the tension. A device comprises a rolling mill, a reeling machine and a thickness measurer which are arranged at two sides of the rolling mill, and a length measuring roll arranged between the reeling machine and the rolling mill, wherein a reel diameter measurer is arranged on the reeling machine; a rolling force sensor and a hydraulic cylinder are arranged on the rolling machine; a pulse coder and a tension meter are respectively arranged on and below the length measuring roll; and the thickness measurer and the like are connected with a computer control system. A longitudinal variable-thickness plate has two or more kinds of different thickness regions, transition regions are arranged among the thickness regions, and the plate is formed by the strip through the steps of annealing, unreeling by an unreeler, leveling by a leveler, and cutting by a cutting machine.

A rolling mill has roughing, intermediate and finishing roll stands on a first side of a billet reheating furnace, and a breakdown mill on an opposite second side of the furnace. Billets are heated to an elevated rolling temperature in the furnace and are then ejected to the second side of the furnace for rolling in the breakdown mill before being directed back through the furnace for continued rolling into finished products at the first side of the furnace in the roughing, intermediate and finishing roll stands.

The invention relates to a treatment method for obviously improving the deformability and the mechanical property of a high-strength aluminum alloy. The method comprises the following steps of: sequentially performing a solid solution treatment and a quenching or annealing treatment on a sheet material; performing low-temperature pre-cooling and rolling deformation on the sheet material; and recrystallizing and aging the sheet material, wherein in the low-temperature pre-cooling process, the low-temperature or ultralow-temperature cooling treatment is performed on the sheet material in a cooling medium with the temperature of 196 to -50 DEG C so that the temperature of the sheet material is equivalent to that of the cooling medium; and in the rolling process, the pre-cooling treatment can be firstly performed on a milling roller, wherein the reduction in pass can reach 5% to 30% and the total deformation can reach more than 90%. Compared with the conventional treatment process, the treatment method provided by the invention has the advantages that the temperature and the time of the recrystallization treatment and the aging treatment of the machined alloy sheet material are decreased and shortened obviously; and the rolling deformability and the strength of the high-strength aluminum alloy and other types of aluminum alloys are improved obviously. In addition, a two-high mill or a four-high mill for the existing industrial production can be applied to the alloy-machining treatment method provided by the invention, so that the alloy property is improved while the cost is lowered obviously. Therefore, the method provided by the invention has a great potential in industrial application.

The invention relates to a method for manufacturing pure titanium seamless tubes. The method is characterized by comprising the following steps of: preparing tube blank bars; machining the tube blank bars; diagonally rolling and punching holes: heating blank to 700 to 980 DEG C, punching holes once or twice by utilizing a two-roll diagonally rolling mill group, wherein molybdenum mandrels or water-cooled mandrels are utilized, the inclined angle of punching roll is 8 degrees, the number of revolutions of the roll is 40 to 90 basic speed to 195 r / min; preparing the pierced billet after punching hole, wherein the specifications of the pierced billet are that the outside diameter is phi 72 to phi 125mm,the wall thickness is 5 to 20mm, and the length is; carrying out cold rolling; and carrying out heat treatment on finished product, detecting performance and entering warehouse. The invention has the characteristics of high production efficiency, low production cost, high material yield, short production period, low device investment, better product quality, and the like. The produced pure titanium seamless tubes have good quality, the mechanical properties accord with state requirements, and the pure titanium seamless tubes can meet the need for large-scale industrial production.

A control method and a control system of tension in the process of rolling periodic variable-thickness strips belong to the technical field of rolling. The method comprises the following steps: dividing segments on the rolled pieces, setting front and back tension values in each zone, realizing tension open-loop control and tension closed-loop control based on maximum torque limit and adding a dynamic torque compensation link and a mechanical friction torque compensation link; controlling torques of an uncoiler and a coiling machine motor and setting speed. The system comprises a rolling mill; coiling machines are arranged at both sides of the rolling mill respectively; length-measuring rollers are arranged between the coiling machines and the rolling mill; thickness gauges are arranged at both sides of the rolling mill respectively; coil diameter gauges are arranged on the coiling machines; a rolling force sensor and a hydraulic cylinder are arranged on the rolling mill; tensiometers are arranged below the length-measuring rollers and pulse coders are arranged on the length-measuring rollers; the thickness gauge, the coil diameter gauge, the rolling force sensor, a displacement sensor of the hydraulic cylinder, the tensiometer and the pulse coder are respectively connected with a computer control system.

The invention relates to a cold-rolled sheet rolling emulsified oil containing a modified nano copper and preparation method thereof, which belong to the field of organic chemistry. The emulsified oil comprises the following components, in percentage by weight: 54-80% of a base oil, 15-32% of an oiliness agent, 0.1-1% of a modified nano copper particle, 2-4% of an extreme pressure agent, 0.5-2% of an anti-rusting agent, 2-6% of an emulsifier, 0.4-1% of an anti-oxidant, 0.03-0.1% of an anti-foaming agent, and 0.2-0.6% of an anti-mildew agent. The cold-rolled sheet rolling emulsified oil containing the modified nano copper is diluted with water into a 2-6 wt% emulsion, and the emulsion is directly used in the cold rolling process of the strip steel and has very good lubrication, cleaning property of the rolling mill and annealing cleaning property, after annealing, the steel plate not subjected to degreasing has a clean surface without pollutants, so as to satisfy rolling production requirement under high pressure at high speed.

The invention belongs to the technical field of lubricating materials and discloses a lubricating material for cold rolling and its preparation method and use. The lubricating material for cold rolling comprises, by mass, 20-60% of base oil, 0.3-1% of an anti-oxidant, 20-60% of a lubricant, 3-10% of an extreme pressure agent, 0-5% of an antirust agent, 1-3% of a purification dispersant, 3-9% of an emulsifier, and 2-6% of an anionic surfactant. The lubricating material is especially suitable for a four-roller four continuous rolling unit having the size of 650mm and high lubricity requirements, does not contain chlorinated paraffin, prevents stress corrosion on a cold-rolled finished product, and has excellent lubricity. Compared with the common emulsion on the current market, the lubricating material reduces a rolling force by 7-10%, prolongs a roller service life by 10-15%, reduces comprehensive energy consumption by 10-15% and effectively prolongs a rolling mill bearing service life.

The invention relate to a control technique of the rolling process of a rolling steel. The invention discloses a control method of a rough rolling intermediate billet camber. The control method combines a position control with a pressure control; in a multi-pass rolling of the positive-pass and reverse-pass of a roughing mill, the camber generation of the intermediate billet is restricted. The control method of the invention can reduce the additional value of the openness of a side guide plate, leads the flexible deformation of the intermediate billet between the inlet and the outlet of the roughing mill in the horizontal direction to be restricted by the side guide plate, reduces the camber of the intermediate billet, and prevents the severe abrasion which is caused by the long-term contact of the side guide plate and the intermediate billet.

The invention relates to a method for manufacturing a foamed aluminum sandwich plate, which belongs to the field of porous foam metal and laminar composite materials. The method comprises the following steps of: uniformly mixing aluminum-silicon alloy powder prepared by an atomization method, and foaming agent titanium hydride powder and metal magnesium powder in a certain ratio; filling the powder into a thin-wall steel (or aluminum alloy) tube with one sealed end; sealing the other end of the tube after powder filling and preparing a rolled blank; rolling and compounding at a slow speed on a cold rolling mill; trimming an obtained composite plate and cutting a foamed preformed blank according to the size of a foaming mold; foaming the preformed blank in a steel mold in a limited way; adjusting foaming temperature and foaming time as required; and foaming at a high temperature for a short period of time to obtain a high-quality foamed aluminum sandwich plate with a uniform foam structure in a core layer, good interface bonding, high thickness accuracy and excellent plate profile. The method has the outstanding characteristics of low equipment requirement, high plate profile accuracy of a product, high three-point bending strength and the like and is advantaged technology suitable for mass industrial production of foamed aluminum sandwich structural materials.

A method of using thin plate adobe continuous casting and rolling to producing thin band steel coil is provided, which belongs to rolling metal at once after continuous casting, in particular relating to thin standard band steel production method. The invention is characterized in that: a conticaster, a swing shear, a roller-hearth type heating furnace, a scale breaker, a vertical miller, 7 mill groups, laminar flow cooling device and reeling machine are connected to a CSP produce line, the produce line adopts reasonable temperature system, rolling equipment, rolling way and combining with cooling after rolling, the molten steel after continuous casting is a casting adobe of 50 to 70mm thick and 900 to 1300 wide, after cutting, heating, scale breaking, proceed continuous rolling to form a thin band of 1.2 to 1.5mm thick and 900 to 1300 wide, then after cooling to reel steel coil. The production flow is short, the equipment is few, the investment is less and the running expense is low; The technics and equipment is reasonable and high efficient, double locomotive and double flow casting, heating by two furnaces, seven rolling machines roll continuously, the production is smooth and saves energy with high production efficiency; the product performance is even and stable, the board shape is regular with high accuracy and good surface quality.

The invention relates to a rolling forming method of a ring with inner step section. The rolling forming method of a ring with inner step section is characterized in that it comprises the following steps: 1) blanking; 2) preforming: uniformly heating the material section from room temperature to a heat distortion temperature with high plasticity and low resistance, then upsetting, piercing and stamping the material section in thermal state to fabricate ring blank for rolling; 3) rolling by a ring rolling mill: heating the ring blank in a heating furnace, taking out when the temperature reaches the heat distortion temperature and putting the ring blank into the ring rolling mill to carry out rolling, during the rolling process, excellent lubrication is maintained between the ring blank and the rollers, and the ring forging is formed by multiple rolling the ring blank; 4) mechanical cutting processing the ring forging to form the ring with inner step section. Accordingly, the invention has advantages of low cost and high production efficiency.

The invention relates to an installation of metallurgy industry rolling mills, pinch pass mill, burnishing machines and the like large-scale mechanical equipment, especially to an installation method of a large-scale rolling mill, which is characterized in that the installation of a large-scale rolling mill is realized by the process steps of base preparation, rolling mills bearing plate installation, rolling mills motherboard transverse alignment, sling preparation, memorial archway transverse alignment, memorial archway check-up, roll-changer installation and rolling mill accessory installation. The invention satisfies all requirement of different construction sites, effectively resolves hanging difficult problem, saves work efficiency about 6-7 times, ensures installation quality, uses hydraulic bolt stretchers to avoid bolt up force moment from macrolesion bolt, and adopts small fastening force moment to allow rolling mills subbase to become flexible. Work difference bands are used to control the roll changing transmission device central line and the rolling mill central line to ensure installation quality. According to combination of calculation and on-site practicality, the invention not only can be used for rolling mills installation, but also can spread in mechanical equipment installation with common advising signification.

The invention relates to an Alpha+Beta type titanium alloy steel bar fabrication technology used on a rotor vane, which comprises the following steps: (1) a cast ingot is heated, and the temperature is risen to 40 to 60 DEG C above a Beta transformation point after entering in a furnace, and the temperature is kept for 10 to 20 hours; (2) the cast ingot is processed through cogging and smithing, each pier drawing deformation amount is controlled between 30 percent to 40 percent; the smithing is performed in a two phase region after the pier drawing, and the total deformation amount is more than or equals to 90 percent; (3) the cast ingot is heated until the temperature reaches 20 to 40 DEG C above the transformation point after returning to the furnace, the temperature is preserved, and then the water quench is performed; (4) after the water quench, stocks are returned to the furnace and heated, and then are heat-preserved in the two phase region; the two phase region smithing is performed in a radial forging machine after the stocks reach a certain temperature, and the lengthening coefficient is controlled between 1.2 to 1.3; (5) after the radial smithing, the stocks is returned to the furnace and heat continuously and then is heat-preserved in the two phase region, then the stocks is rolled on a rolling mill, and the rolling temperature ranges from 910 to 940 DEG C. The Alpha+Beta type titanium alloy steel bar fabrication technology eliminates the figures on a macrostructure and the Beta spots on a microstructure of the heat strong two-phase titanium alloy caused by the hot work, and obtains a small-size two-phase titanium alloy steel bar with a fine and uniform equiaxed two-state structure.

A high-speed steel roller ring for rolling wire or rod material contains C, W, Mo, V, Cr, Al, Ni, Co, Nb, Ti, Ce, Na, Mg, Si, Mn, S, P and Fe proportionally. It is prepared through smelting in electric furnace, centrifugal casting, and annealing, high-temp quenching and tempering twice. Its advantages are high hardness, tension strength and toughness for breaking, smooth surface and high size stability.

The invention belongs to the field of steel rolling manufacture, specifically is a high-speed steel composite roll for strip mill in steel rolling industry and casting method thereof. The outer layer of the composite roll is made of high-speed steel, the middle layer is made of ductile cast iron base iron or graphite semisteel, the core is made of ductile cast iron. The invention employs centrifugal compound foundry technique, the roll is moulded by three times of casting. Constant centrifugal rotating speed is kept in centrifuge, the metal material of the outer layer and the middle layer are mould cast, and then the metal of the roll core is statically cast to form the final product. Compared with former dual-layer or other three-layer composite high-speed steel rolling rolls, the three layers of metal of the high-speed steel composite roll of the invention are well combined and have high strength; the optimal selection of the material of the middle layer improves the strength of the bonding layer, the carbide affecting the binding performance in the middle layer is reduced, the spreading of alloy element in the outer layer high-speed steel to the core, which affects the core material performance, is also effectively avoided by the middle layer, cracking and dropping off of the working layer in hot processing and rolling process are prevented as well.

The invention provides a production method of a large caliber high steel-grade corrosion-resistant seamless steel tube with the diameter of phi 219.0-phi460.0mm, which comprises the steps of the techniques of: steel making, tube rolling, thermal treatment and processing of the steel tube, and the like, and produces the large caliber high steel-grade corrosion-resistant seamless steel tube with the diameter of phi 219.0-phi460.0mm. The method has the effects of solving the problem of extremely unfavorable influence of the harmful elements such as P, S, and the like on the corrosion resistance of a petroleum-special tube and obtaining a high-quality round billet, adopts the combination of phi 460 three-roller retained mandrel POF rolling mill with high-end thermal rolling control technique to obtain fine quality tube bodies with different sizes, and obtains pipeline tubes with eligible surface quality and combination property by reasonable thermal treatment technique and the control technique of the residual stress of the steel tube, which not only has high strength and excellent corrosion-resistant property but also has good toughness. The invention has the beneficial effects that the steel tube has good physical-chemical properties, high tube body size precision, and convenience for use as well as being beneficial for the safety of long-distance delivery ducts, and can be widely used for the acid oil-gas fields containing hydrogen sulfide.

The invention belongs to the metallurgy technical field and in particular relates to an intermediate blank cooling system and cooling control technology. The intermediate blank cooling system is characterized in that an aerial fog cooling device body is arranged between a rough mill and a finishing mill. The aerial fog cooling device body is composed of an upper cooling header and a lower coolingheader, and an aerial fog nozzle and a compression air pipe are arranged on the cooling water pipe of the upper cooling header and the lower cooling header; and the on / off control valve and flow control valve of the cooling water pipe and the compression air pipe are connected with a control valve station. The intermediate blank aerial fog cooling technology is controlled by the aerial fog controltechnology sprayed on the cooling header arranged near roller ways at the front and rear of the mills. The invention has fast cooling speed without changing metal performance, water yield regulatingrange is wide and the water yield can be regulated continuously, the cooling speed of the intermediate blank can be precisely controlled, and the invention can be widely applicable to middle and thickplate production line.

The invention relates to a centrifugal combined indefinite chill cast-iron roller and a preparation method thereof, pertaining to steel rolling technical field. The chemical composition of a roll barrel is (weight percent): 3.2-3.8 C, 3.8-4.5 Ni, 1.2-1.8 Cr, 0.2-0.4 Mo, 0.2-0.5Cu, 1.0-1.8 Si, <0.8Mn, 0.10-0.30 Nb, 0.05-0.20 V, 0.05-0.20 Ti, 0.04-0.07Mg, 0.02-0.05 Y, 0.01-0.03 Sb, and the rest are Fe and unavoidable microimpurity. The invention employs a electric stove to produce a roller, and the roller is moulded with centrifugal casting method; the roller is characterized by high strength and hardness, good toughness, hardness uniformity and hardenability, excellent wear resistance and oxidation resistance and the anti-cold shock and heat shock properties are also good; no phenomena like breaking, peeling, crazing and steel sticking are in the operation process; the service performance is apparently better than high nickel-chrome indefinite chill cast-iron roller; the processing technique is simple, high-heat treatment is not needed and the production cost is low. The invented roll has the advantages that: the rolling mill operating rate is significantly improved, the production cost of mill bar is reduced, the surface quality of the mill bar is improved and the economic and social benefits are good.

The invention provides a new method for controlling flying shears for bars and wires based on T400, which is an advanced electrical control method for start-stop type flying shears for bars and wires. The method comprises the steps of accurate shearing-blade position control, shearing length control and automatic shearing optimization, and the like; in the process of production, when an upstream rolling mill has an accident, or the quality of a section of a rolled piece is poor, a fragmentation function can be started on line so as to carry out partial fragmentation or complete fragmentation on the rolled piece, and the fragmentation and shearing speed is in step with the running speed of the rolled piece automatically; and when the fragmentation operation is stopped, a flying shear is automatically positioned to a start position and enters into a standby state of the normal shear mode. In the invention, the powerful computation function of the T400 is fully used, core control parts of the flying shear are completely integrated into the T400, and high-speed counters, shaft positioning modules and touch screens are not required, therefore, the cost is reduced, and high accuracy is obtained; and when the flying shear carries out double-length shearing at a speed of 21 m / s, the double-length error is basically within 75 mm, and partial double-length error can be within 30 mm.

A method for producing ferritic stainless steel bands with roughened surfaces through cold continuous rolling comprises that (1), a five-rack serial type cold continuous rolling is performed, a five-rack serial type cold continuous rolling unit is adopted, the diameter of a working roll of each rolling mill is 300-500mm, and endless rolling is performed; the roughness degrees of the rolls of the first rack to the fourth rack are in a range of 0.5-1.0mum and decrease sequentially; the working roll of the fifth rack is subjected to roughening and chromium plating treatment; an emulsion lubrication rolling mode is adopted, the temperature of an emulsion is 50-60DEG C, the emulsion is sprayed to roll gaps for cooling and lubricating, the temperature of cold-rolled band steel is controlled below 150DEG C; the accumulated reduction rate of the first rack to the fourth rack is larger than 60%, the reduction rate of the fifth rack is in a range of 4-10%, and the roughness of the cold-rolled band steel is controlled in a range of 0.5-1.0mum; (2), the cold-rolled band steel is subjected to annealing acid picking treatment, heating and annealing are performed in a continuous horizontal gas furnace, the annealing temperature is in a range of 800-1000DEG C, and recrystallization of the band steel is finished; finished surfaces are obtained finally through electrolytic picking by Na2SO4 and H2SO4 solutions and soaking picking by a nitric acid and hydrofluoric acid mixed acid solution sequentially after annealing.

The invention simultaneously solves building the contact organization, the performance is uneven question. The invention has provides a kind of gas spray cooling system and the method, namely after the spinning machine, style touches in front of the air blower a section of air cooled table place above, two sides symmetrical establishes the gas spray chiller, first builds above the contact from the coil, key to builds the contact to leave the atomization to cool, then style touches the forced-air cooling line again from the underneath forced-air cooling, and uses the' good spirit installment concentratly blowing the contact place. The intensity difference between the line material build contact through the gas spray cooling system and the no build contact is fall to 5~7MPa; The overall intensity of the line material may enhance 20~25MPa; Improves the surface quality; Simultaneously decreases the ambient temperature, improves the operating environment.

The invention discloses a cold rolling manufacture method of copper and aluminum composite plate strips. The cold rolling manufacture method comprises the following steps that: 1, a copper plate and an aluminum plate are subjected to homogenization annealing treatment; 2, surface treatment is carried out: firstly, the copper plate and the aluminum plate subjected to the homogenization annealing treatment are subjected to soaking degreasing, then, the copper plate and the aluminum plate subjected to the soaking degreasing are taken out for drying, and next, the composite surfaces to be rolled of the copper plate and the aluminum plate are ground by a stainless steel wire brush; 3, the copper plate and the aluminum plate are subjected to cold rolling compounding by a cold rolling mill, so copper and aluminum composite plate blanks are obtained; and 4, the copper and aluminum composite plate blanks subjected to the cold rolling are subjected to the diffusion annealing treatment. The cold rolling manufacture method has the advantages that through improving the cold rolling process operation and the process parameters, the copper plate and the aluminum plate are subjected to full diffusion and chemical reaction on the composite surfaces in the manufacture process, so the transition structure with excellent performance is obtained at the composite surfaces, and the bonding intensity of finished products is effectively improved.

The present invention discloses a post-processing method for steel-back aluminum-base semisolid composite plates and relates to the post-processing research field of interfacial mechanical characteristic of steel-back aluminum-base semisolid composite plates. At room temperature, a steel-back aluminum-base semisolid composite plate is rolled with the reduction rate of 0.5-1.6 percent on a precision rolling mill, and the difference between shrinkages of the aluminum-base coating and the steel base in the coagulating and cooling process of the composition is redeemed by the difference between the deformation of the aluminum-base coating and the steel base produced in the rolling process, thereby, reducing the additional interfacial stress of the composite plate, simply and conveniently improving the interfacial shear strength of the composite plate, and solving the technical problems of large energy consumption and small increase amplitude of interfacial shear strength in post-processing method of diffusion annealing of aluminum-base semisolid composite plates.

The invention relates to a preparation method of a composite steel plate, in particular to a preparation method of a titanium-steel composite plate. The preparation method comprises the following steps of: firstly selecting titanium plates and steel plates which have equal width and length and removing rusty layers and oxide layers; then making surfaces of the titanium plates and the steel plates opposite, and completely coinciding to form a combined blank; then sealing up the periphery of the combined blank by taking four titanium plates as side seal plates, and clamping the side seal plates and the combined blank by using a clamp and then putting the side seal plates and the combined blank into a vacuum chamber together; tightly welding all contact seams of the combined blank and the side seal plates, then conveying the combined blank and the side seal plates into a heating furnace together and heating to 600-1200 DEG C, and carrying out heat preservation for 0.1-2h; and finally, conveying the heated combined blank into a rolling mill for rolling to obtain the titanium-steel composite plate with the interface bonding strength of 350MPa. The invention well solves the problem that the interface of the titanium-steel composite plate is oxidized and improves the interface bonding strength of the composite plate, and moreover, argon or brazing filler metal does not need to be added, thereby saving the cost and simplifying the flow of the production process.

The invention relates to a sheet shape control method for strip rolling. A model self-adapting sheet shape prediction and control method comprises the following steps: a sheet shape decomposition method and a sheet shape control model are given, and the input signals of the sheet shape control model include a rolling force and a crown of incoming material; then a sheet shape model which includes executing mechanism characteristics is obtained according to history sheet shape actual output data, the model is dynamically corrected according to real-time rolling parameters and corresponding actual sheet shape values, a correction model is used for accurately predicting the sheet shape and determining the optimal control quantity, and a feedback path, which removes transmission time-delay of strip steel between a frame and a measuring system, is established, thus carrying out regulation of a feedback controller in real time and ensuring rapid and dynamical sheet shape control. As the sheet shape control model is corrected in real time according to actual data, constantly changing actual conditions of the sheet shape model of a rolling mill are satisfied, thus predicting the sheet shape more accurately to increase the control accuracy of the sheet shape.

A kind of low alloy high speed steel roller material and the method to produce it. The chemical components of it is( weight percent): C: 1.2-1.8%, Cr: 4.5-6.5%, W: 1.0-3.0%, Mo: 1.0- 3.0%, V: 3.0-5.0%, Al: 0.6-1.2%, Si: 0.8-1.2%, N: 0.05-0.15 %, B: 0.04-0.12%, Nb: 0.05-0.20%, Ti: 0.06-0.18%, Y: 0.04- 0.15%, Mn<0.5%, P<0.04%, S<0.04%, the other is Fe, and the actual content of carbon of it is: 0.033W+0.063Mo+0.060Cr+0.200V+(0.08-0.20). It is made by smelting with electric cooker, the roller is molded by centrifugal complex cast or continuous complex cast, the roller will be quenched and tempered after it has been processed rudely, and the regulated size and accuracy will fulfilled after a fine machining at last. Less Tungsten and Molybdenum element are contained in the low alloy high speed steel roller material, and it does not contain the expensive Cobalt, the production cost of it is lower, and it own high red-hardness, obdurability and abrasion resistance. This patent can improve the productivity of the rolling mill, and prolong the life of roller, and decrease the cost of rolled metal.