2225results about "Work treatment devices" patented technology

This invention discloses a process for controlling the shape of A514GrQ extra-thick plates for offshore platforms. It uses 800-1000mm thick steel ingots, and after removing and cleaning the ingot risers, ensures uniform thickness of the ingot body, laying the foundation for obtaining steel plates with excellent flatness. The heating process is optimized to ensure uniform heating of the ingot head, middle, and tail, facilitating uniform deformation during rolling. Homogenized rolling is employed to reduce cooling water usage, limit the reduction per pass, and control the final rolling temperature, avoiding uneven internal stress and shape rebound in the steel plate. The final product is a 180-210mm thick steel plate with a maximum flatness ≤8mm and a lateral flatness ≤4mm within a length of 10000mm and a width of 2400mm, significantly reducing subsequent leveling tasks.

The invention relates to the technical field of advanced high-strength steel for automobiles. The invention relates to cold-rolled dual-phase steel DP780 with low cost and high surface. The cold-rolled dual-phase steel DP780 comprises the following chemical components in percentage by mass: 0.10 to 0.15 percent of C, 0.20 to 0.40 percent of Si, 1.60 to 1.80 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.004 percent of S, 0.015 to 0.035 percent of Al, 0.010 to 0.025 percent of Ti, 0.005 to 0.015 percent of Nb, less than or equal to 0.006 percent of N, less than or equal to 0.0003 percent of H and the balance of iron and inevitable trace impurities. The invention further provides a production method of the low-cost high-surface cold-rolled dual-phase steel DP780. The production method comprises the technological processes of smelting, continuous casting, casting blank reheating, rough rolling, finish rolling, cooling and coiling after rolling, hot coil acid continuous rolling and rolled hard coil continuous annealing. The 780MPa-grade cold-rolled dual-phase steel has the beneficial effects that the 780MPa-grade cold-rolled dual-phase steel which is small in alloy adding amount and easy to control steelmaking casting, hot rolling and continuous annealing can be stably obtained, and the use requirements of automobile parts are met.

The invention relates to the technical field of advanced high-strength steel for automobiles. The invention relates to cold-rolled dual-phase steel DP980 with low cost and high surface. The cold-rolled dual-phase steel DP980 comprises the following chemical components in percentage by mass: 0.07 to 0.10 percent of C, 0.30 to 0.60 percent of Si, 2.00 to 2.60 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.003 percent of S, 0.015 to 0.035 percent of Al, 0.010 to 0.040 percent of Nb, 0.010 to 0.040 percent of Ti, 0.10 to 0.30 percent of Cr, less than or equal to 0.006 percent of N, less than or equal to 0.0003 percent of H and the balance of iron and inevitable trace impurities. The invention provides a production method of low-cost high-surface cold-rolled dual-phase steel DP980. The production method comprises the technological processes of smelting, continuous casting, casting blank reheating, rough rolling, finish rolling, cooling and coiling after rolling, hot coil acid continuous rolling and rolled hard coil continuous annealing. The 980MPa-grade cold-rolled dual-phase steel has the beneficial effects that the 980MPa-grade cold-rolled dual-phase steel which is small in alloy adding amount and easy to control steelmaking casting, hot rolling and continuous annealing can be stably obtained, and the use requirements of automobile parts are met.

The present invention relates to the field of aluminum cold rolling technology, and specifically to an aluminum cold rolling production device and production method for can body materials, including a stable cold rolling device for rolling aluminum alloy strips, the stable cold rolling device including a driving platform, a cold rolling roller, an outer wall cleaning mechanism, a first ball screw slide, an identification detection device and a spare replacement installation platform; two cold rolling rollers are provided and installed on the driving platform; two outer wall cleaning mechanisms are provided, and an outer wall cleaning mechanism is provided on the side of each cold rolling roller; two first ball screw slides are provided, and a first ball screw slide is installed on the working end of each outer wall cleaning mechanism; two identification detection devices are provided, and an identification detection device is installed on the active end of each first ball screw slide; the spare replacement installation platform is provided on the side of the driving platform, and spare rollers to be replaced are stored on the spare replacement installation platform. The present invention can effectively ensure the stability of production and improve productivity at the same time.

The utility model relates to the technical field of strip steel rolling, in particular to galvanized strip steel production rolling equipment. According to the technical scheme, the device comprises an air outlet pipe, a fixing frame, rollers and an air cooler, the rollers are symmetrically and rotationally installed in the positions, close to the upper surface and the lower surface, of the interior of the fixing frame, cooling cavities are formed in the two rollers, and the two ends of each roller are fixedly connected with a rotary joint A and a rotary joint B correspondingly; connecting pipes A are fixedly connected to the outer sides of the two rotating joints A, the tail ends of the two connecting pipes A are fixedly connected to the outer surface of an air outlet pipe, and an air inlet pipe is fixedly connected to the tail end of the air cooler output pipe. In the hot rolling process of the galvanized strip steel, the temperature of the roller is reduced, the service life of the roller is prolonged, heat of the roller is converted into hot air, production raw materials needing to be heated can be preheated, meanwhile, the hot air drying device can be used for drying the galvanized strip steel after follow-up cleaning operation, and energy consumption is saved.

The invention discloses a V-B-Ti microalloyed 690 MPa grade steel for engineering machinery, and belongs to the field of metal processing. The steel comprises the following chemical components in percentage by weight: 0.13%-0.17% of C, 0.15%-0.25% of Si, 1.55%-1.7% of Mn, less than or equal to 0.02% of P, less than or equal to 0.015% of S, 0.017%-0.0250% of Ti, 0.1%-0.2% of Cr, 0.015%-0.045% of Als, 0.05%-0.08% of V, 0.0015%-0.0020% of B, 0.005%-0.0095% of N, 3.4%-3.8% of Ti / N and the balance of Fe and inevitable impurities, the total amount of other impurity elements is less than 0.05%, and the problems of low steel plate toughness and plate shape unevenness are solved.

The invention belongs to the technical field of titanium alloy machining, and relates to a preparation method and application of a titanium alloy disc round wire resistant to the high temperature of 650 DEG C. The method comprises the following steps: firstly, heating a prefabricated wire blank of which the chemical components and the microstructure are designed through combination of an induction heater and a tubular heating furnace, carrying out continuous rolling by utilizing a horizontally and vertically arranged continuous rolling mill, and obtaining a ten-square-section wire blank A of which the structure and the size meet requirements through hole pattern parameter design, induction heating and heat compensation between racks and control over pass deformation and accumulated deformation; then combined heating is conducted through an induction heater and a tubular heating furnace, hot drawing is conducted through a two-connection type roller die, and a round-section wire blank B is obtained; and heating by using an induction heater and a tubular heating furnace in a combined manner, controlling the heating temperature, peeling by using a peeling die to obtain a wire material with an accurate size, and finally polishing by using an abrasive belt polishing machine to obtain the target titanium alloy disc round wire material. The target titanium alloy disc round wire can be applied to high-temperature part fasteners of hypersonic aircrafts, aero-engines or airspace engines.

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 present invention relates to the technical field of seamless steel pipe production, and discloses a hot rolling production process for G115 seamless steel pipe, comprising the following steps: preparing a G115 steel hollow billet with a diameter smaller than that of a finished pipe; hot rolling, piercing and rolling the hollow billet to obtain a rough pipe; sizing the rough pipe to obtain a rough pipe; heat treating the rough pipe to form a semi-finished pipe; grinding and machining the semi-finished pipe to obtain a finished pipe. By adopting a production process of hollow billets with a diameter smaller than that of finished pipes + hot rolling, the production batch is flexible, the specification applicability is strong, and it is suitable for industrialized production of factories with complex specifications, the production efficiency and yield rate are significantly improved, the product surface quality is good, the metallographic structure and the longitudinal and transverse mechanical properties are uniform, the process is controllable, the quality is stable, the yield rate is high, and the economic benefits are significant.

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 high-impact-toughness Ti80 titanium alloy plate with the thickness larger than or equal to 50 mm and a preparation method. The preparation method comprises the steps that S1, a Ti80 plate blank with the thickness ranging from 200 mm to 500 mm is selected; (S2) plate blank rolling is conducted, specifically, after the plate blank is heated, the plate blank is subjected to 1-2 heating number rolling, a plate with the thickness ranging from 50 mm to 180 mm is obtained, the total rolling deformation ranges from 60% to 90%, and the finish rolling temperature is larger than or equal to T beta-250 DEG C, and (S3) plate straightening is conducted. According to the method, surface micro-hardening of the thick normalized intermediate-state plate blank is achieved through intermittent cooling, meanwhile, by controlling the rolling deformation amount and distribution of the deformation amount, deformation can permeate into the softened core portion more capacity, the core portion structure is refined, and the toughness of the core portion is improved; the problems that the surface and the core of the Ti80 titanium alloy thick plate (the thickness is larger than or equal to 50 mm) are inconsistent in structure, and the impact toughness of the core is insufficient are solved, and the prepared Ti80 titanium alloy thick plate can meet the requirement of ocean engineering equipment for thick plates.

The invention relates to the technical field of low-carbon microalloyed steel production, in particular to economical thin L450M pipeline steel and a method for controlling a banded structure, the steel comprises the following chemical components in percentage by weight: 0.07%-0.09% of C, 0.10%-0.25% of Si, 1.70%-1.80% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.01%-0.02% of Nb, 0.008%-0.015% of Ti, 0.015%-0.04% of Al, 0.05%-0.15% of Cr, 0.003%-0.006% of N and the balance of Fe and inevitable impurities, and the total amount of impurity elements is less than 0.05%; the steel plate produced by the invention has the advantages of low cost, high strength and toughness, low yield ratio and high straightness, and can ensure the service safety of the gas transmission pipeline.

The present invention provides a soluble cold rolling oil composition in which oil particles of approximately 0.1 μm or less are dispersed in water, and which has rolling properties (particularly anti-seizure properties) equal to or better than those of water-insoluble rolling oils and emulsion-type rolling oils, while enabling the gloss of products to be made uniform and enabling an improvement in unit consumption compared to emulsion-type rolling oils; and a cold rolling method using the composition. [Solution] A cold rolling oil composition containing (A) a base oil, (B) a specific fatty acid, (C) a specific sulfur-based extreme pressure agent, (D) a specific water-soluble polymer, and (E) a specific amine, and a cold rolling method using the same.

The utility model discloses a flattening device for cold-rolled strip steel processing, and relates to the field of cold-rolled strip steel processing equipment. The device comprises a device body, a lower pressing roller is arranged on the lower portion of the interior of the device body, a liquid feeding mechanism is arranged on one side of the lower pressing roller, and the liquid feeding mechanism comprises a motor. At the moment, a liquid pump in the liquid bin can be started through an external controller, the leveling liquid is guided into the liquid storage pool, then a motor is started, the motor drives a first gear and a second gear to rotate, then the first gear and the second gear drive an upper sucking roller and a lower sucking roller to rotate, and the leveling liquid is sucked into the liquid storage pool. And in the rolling process of the lower sucking roller, the leveling liquid can be effectively wrapped on the lower sucking roller, so that the liquid can be conveniently fed on the ground of the cold-rolled strip steel.

The invention discloses a steel rolling production line water circulation efficient cooling system which comprises a slag discharge channel and a filter tank, a filter mechanism is arranged in the filter tank, the slag discharge channel is communicated with the inlet end of the filter mechanism through a first communicating pipe, and a slag collecting tank is arranged below the outlet end of the filter mechanism. The bottom of the filter tank is connected with an oil-water separation tank through a second communicating pipe, an oil removal mechanism is arranged in the oil-water separation tank, an oil discharge port is formed in the upper part of the oil-water separation tank, the bottom of the oil-water separation tank is connected with a cooling tank through a third communicating pipe, and an air refrigerator is arranged above the cooling tank; an air cooling assembly communicated with the air refrigerator is arranged in the cooling pool, the upper portion of the cooling pool is connected with an adsorption tank through a fourth communicating pipe, and the adsorption tank is connected with a recovery tank through a fifth communicating pipe. The device not only can improve the impurity and oil removal effect of the turbid circulating water, but also can obviously improve the cooling speed of the turbid circulating water, and has the advantages of reasonable structural design and good environmental protection effect.

The invention relates to the technical field of metal plate rolling processing, and discloses a rolling strengthening method capable of reducing the rigidity of a metal plate, which comprises the following steps: applying an asymmetric rolling condition to an initial plate to enable the plate to generate a speed gradient in the thickness direction; the plate is subjected to one-pass large-rolling-reduction rolling, and a non-continuously-distributed shear band is formed; the rolled plate is heated to the dynamic recrystallization temperature interval of the plate, and multi-pass small-rolling-reduction warm rolling is conducted on the plate; and in the warm rolling process, dynamic recrystallization of a shear band is promoted to form a grain-refined continuous core layer, complete recrystallization of the surface structure of the plate is inhibited to keep the work hardening state of the plate, and therefore the metal plate with the rigidity lower than that of an initial plate is obtained. According to the invention, a soft core-hard shell heterostructure is constructed in the plate, high strength and low macroscopic rigidity are synergistically realized, the process controllability is strong, and the method is suitable for preparation of high-performance structural materials.

The invention discloses V-N-B microalloyed 550MPa-grade steel for engineering machinery and a preparation method of the V-N-B microalloyed 550MPa-grade steel, and belongs to the technical field of low-carbon microalloyed steel production. The steel comprises the following components in percentage by weight: 0.06%-0.15% of C, 0.2%-0.35% of Si, 1.35%-1.65% of Mn, less than or equal to 0.02% of P, less than or equal to 0.015% of S, 0.01%-0.03% of Nb, 0.015%-0.0250% of Ti, 0.15%-0.25% of Cr, 0.015%-0.045% of Als, 0.05%-0.08% of V, 0.0012%-0.0020% of B, 0.01%-0.025% of N, 0.005%-0.010% of Ca and the balance of Fe and inevitable impurities, the total amount of other impurity elements is less than 0.05%, and the problems of low toughness and plate shape unevenness are solved.

The invention discloses a rolling method of an R60705 zirconium alloy medium-thickness plate. The rolling method comprises the following steps: 1, carrying out four-fire forging on an R60705 zirconium alloy ingot to obtain a forged plate blank; secondly, the forged plate blank is heated and then subjected to first heating number rolling, and a first rolled plate blank is obtained; 3, cutting after polishing; 4, after heating, carrying out second heating number rolling to obtain a second rolled plate blank; 5, cutting after polishing; 6, heating the second intermediate plate blank, and rolling the second intermediate plate blank at a third heating number to obtain a third rolled plate blank; seventhly, the first rolled plate blank, the second rolled plate blank or the third rolled plate blank is subjected to annealing treatment and straightening; and 8, polishing, shearing and pickling a finished product. According to the method, the anisotropy of the mechanical property of the plate is reduced through reasonable distribution of the transverse deformation amount and the longitudinal deformation amount, the rolling temperature, the rolling heating number, the rolling deformation rate, the annealing temperature and other technological parameters are comprehensively controlled, and the R60705 medium-thickness plate which is suitable for the field of chemical engineering structures and good in strong plasticity matching is obtained.

The invention discloses a rolling forming process for an aluminum profile frame, and relates to the technical field of aluminum profile frame machining, the rolling forming process comprises two sets of supporting plates which are fixed to the two sides of the upper middle portion of a base correspondingly, a fourth driving motor is fixedly connected to one side of the outer portion of one supporting plate, and an upper rolling wheel is fixedly connected to the output end of the fourth driving motor; and a third driving motor is fixedly connected to the lower portion, where the fourth driving motor is fixed, of the supporting plate, a lower rolling wheel is fixedly connected to the output end of the third driving motor, and the device comprises a frame cleaning assembly which is arranged on the base and used for removing metal residues on the four faces of the rolling forming aluminum profile frame. Through the arrangement of the frame cleaning assembly, adjustment can be conducted according to the length, width and height of the aluminum profile frame, metal residues on the rolled surface of the aluminum profile frame can be removed, and therefore the effect of the rolling forming process of the aluminum profile frame after rolling forming is improved.

The invention relates to the technical field of low-carbon microalloyed steel production, in particular to a low-yield-ratio economical thin L450M pipeline steel plate and a manufacturing method thereof.The low-yield-ratio economical thin L450M pipeline steel plate comprises, by weight, 0.05%-0.07% of C, 0.10%-0.25% of Si, 1.50%-1.65% of Mn, smaller than or equal to 0.020% of P, smaller than or equal to 0.015% of S, 0.02%-0.04% of Nb, 0.008%-0.020% of Ti, 0.015%-0.04% of Al, 0.25%-0.30% of Cr, 0.003%-0.006% of N, 0.36%-0.40% of CEIIW = C + Mn / 6 + (Cr + V + Mo) / 5 + (Cu + Ni) / 15 and the balance Fe and The production process comprises the steps of molten steel smelting, external refining and degassing, continuous casting, casting blank heating, controlled rolling, relaxation, controlled cooling and air cooling to the room temperature. The method is used for manufacturing the high-strength L450M hot-rolled steel plate for the low-yield-ratio economical oil pipeline with the thickness specification of 9-17.5 mm and the pipe diameter phi of 914 mm or below, the problems that the rolling efficiency of the steel plate is low, the rolling resistance is large, the plate shape is not easy to control and the like are solved, and the steel plate is low in cost, high in strength and toughness, low in yield ratio and high in straightness.

The invention relates to the technical field of seamless steel tube manufacturing, and discloses a seamless steel tube skew rolling device and a seamless steel tube skew rolling process, the seamless steel tube skew rolling device comprises a base and a PLC controller; the skew rolling mechanism comprises a driving disc and an annular frame which are fixedly arranged on the upper surface of the base, six supporting frames are arranged on the inner wall of the annular frame in a circumferential array mode, and rollers are rotationally arranged on the inner walls of the six supporting frames; the skew rolling mechanism further comprises a driving motor arranged on the side face of the driving disc and used for driving the six rollers to rotate at the same time. By arranging the skew rolling mechanism, steel billets can be processed by adopting a mode of skew rolling of six rollers when the equipment is used for processing the steel billets for manufacturing seamless steel pipes, so that the production efficiency of the seamless steel pipes is effectively improved, the energy consumption is reduced, the occurrence of internal defects is reduced, and the quality and the stability of products are improved; meanwhile, production equipment is simplified, and the maintenance cost is reduced.

The utility model discloses a high-speed wire rod air cooling roller way roll shape adjusting device which comprises a bottom frame, a plurality of sets of roller seats are arranged at the top end of the bottom frame, a plurality of sets of roller shafts are arranged in the roller seats, driving motors are arranged at the bottom ends of the roller seats, one ends of the driving motors are in transmission connection with the roller shafts, and adjusting structures are arranged at the front ends of the driving motors. Adjusting devices are arranged on one sides of the roll shafts on the two sides, side edge fine adjusting devices are arranged on the two sides of the roll seat, driving can be conducted in the mounting frame by controlling the multiple sets of air rod structures, a baffle is driven to move up and down through a blocking head structure, the advancing direction of a wire rod is blocked and dredged, and the position distribution of the wire rod on the roll shafts can be changed; deviation caused by a spinning drop point and a conveying device during roller way transportation is reduced, the phenomenon that a roll type is prone to layer staggering after roll collection is avoided, the quality of finished products is improved, the position of the baffle can be adjusted at the top end of the roller shaft, the advancing direction of a wire rod is adjusted and changed in cooperation with an adjusting structure, and the effect of changing the drop point is achieved.

The invention relates to the field of seamless steel tube processing, and discloses a seamless steel tube production process and a seamless steel tube production line, a size changing process is added between a traditional heating process and a traditional punching process, and a square blank or a large-diameter circular blank (a first blank) is changed into a small-diameter circular blank (a second blank). The size changing procedure can be achieved through independent or combined rolling, push rolling and skew rolling processes, for example, push rolling is adopted for changing square billets into round billets, and a two-roller or three-roller skew rolling round billet machine is adopted for reducing the diameter. The first blanks in the heating furnace are arranged in double rows, meanwhile, the product outline is adjusted according to the capacity of a unit, and the front portion, the rear portion and the middle portion are subjected to optimized production, wherein double-row material distribution is achieved, the finished products are as long as 12 m, and cutting head loss is reduced. The matched production line is provided with size changing equipment (such as a section mill, a push mill and a skew mill combination) between a heating furnace and a perforating machine, square billets or round billets can be flexibly processed, the material distribution efficiency, the finished product length and the cost are balanced through the size changing technology, and the economical efficiency and flexibility of seamless steel pipe production are improved.

The utility model discloses a hot rolling dephosphorization device, which relates to the hot rolling dephosphorization field, and comprises a processing pedestal, the top of the processing pedestal is provided with a groove, the inside of the groove is rotatably connected with a transmission roller, the two sides of the processing pedestal are fixedly connected with water pipes, the water pipes are communicated with a high pressure nozzle, the processing pedestal is internally provided with a liquid storage cavity, and the liquid storage cavity is communicated with the high pressure nozzle. A cavity is formed in the machining table base, a motor is fixedly connected to the inner wall of the cavity, an output shaft of the motor is in transmission connection with a driving shaft, the outer ring of the driving shaft is fixedly sleeved with a first gear, the first gear is in transmission connection with a toothed plate, and the toothed plate is fixedly connected with the machining table base. The toothed plate is in meshed connection with the gear II; and a limiting movable assembly. Steel is vertically and stably conveyed through clamping of the two sets of correcting plates, the two faces of the steel are synchronously flushed and dephosphorized through the high-pressure nozzles, secondary flushing is not needed, and the dephosphorizing machining efficiency is guaranteed.

The invention provides aluminum foil blank processing and calendering equipment which comprises a box body, a calendering mechanism, two reversing rollers and a cleaning mechanism, and a cleaning agent is temporarily stored in the box body; the calendering mechanism comprises a compression roller assembly, a second compression roller, an oil supply assembly and two baffle rings, the compression roller assembly is arranged on the box body, the second compression roller is rotationally connected with the compression roller assembly, the two baffle rings symmetrically sleeve the outer side of the second compression roller, and the diameter of the baffle rings is larger than that of the second compression roller; the oil supply assembly is arranged on the box body, and the two ends of the oil supply assembly extend to the positions above the pressing roller assembly and the second pressing roller. The two reversing rollers are rotationally connected with the box body. According to the aluminum foil blank machining rolling equipment, the aluminum foil blank is coated with the rolling oil, so that the rolling oil is evenly distributed on the aluminum foil blank, the oil film is rapidly stripped in a soaking, pre-washing and active intruding mode during follow-up oil film cleaning, then residual oil on the surface of the aluminum foil is reduced, and the product quality is guaranteed.

The present invention discloses a rolling method for starting rolling of raw plates of non-oriented silicon steel with a silicon-aluminum content of 3.5-5% by threading the strip on a UCMW continuous rolling mill. The present invention adopts a method of starting rolling by pressing down in succession, which is different from the traditional method of starting rolling by pressing down in succession on 5 stands at the same time. It reasonably sets the appropriate rolling process for stands 1 to 5#, which can effectively improve the starting success rate of raw plates of non-oriented silicon steel with a silicon-aluminum content of 3.5-5%, and quickly resume production after the strip breaks during rolling. By using the method of the present invention to start rolling by threading the raw plates, the difficulty of non-steady-state rolling of each stand can be greatly reduced, the fluctuation of the rolling force and tension of each stand can be reduced, and the strip breaks during rolling can be avoided, providing the prerequisite for the UCMW cold continuous rolling mill to mass-produce high-grade non-oriented silicon steel with a silicon-aluminum alloy content of 3.5-5%.

The utility model discloses a rolling mill outlet guide plate which is arranged behind a roller of a rolling mill and comprises a driving assembly, a movable guide plate, a guide seat plate and a fixed guide plate, and the two ends of the fixed guide plate are fixedly connected to a rolling mill rack and located behind an outlet of the lower roller. The movable guide plate is arranged between the roller and the fixed guide plate, the two ends of the movable guide plate are connected to the guide seat plates in a guiding and sliding mode respectively, and the guide seat plates are fixedly connected to the inner side wall of the rolling mill rack. The driving assembly is installed on the rolling mill rack and can drive the movable guide plate to move front and back. By adopting the matching mode of the movable guide plate and the fixed guide plate, the threading difficulty is reduced, and the manpower is saved.

The invention discloses hot-rolled ultrahigh-strength automobile steel as well as a manufacturing method, a hot forming method and a cold forming method of the hot-rolled ultrahigh-strength automobile steel. Belongs to the technical field of steel for automobiles, and the steel for the automobiles comprises the following chemical components in percentage by weight: 0.22-0.27% of C, 1.2-1.8% of Si, 2.2-2.6% of Cr, 1.0-1.4% of Mn, 0.02-0.03% of Nb, 0.02-0.05% of Al, less than or equal to 0.020% of P, less than or equal to 0.010% of S, less than or equal to 0.0003% of H and the balance of Fe and inevitable impurities. The automobile steel can be directly subjected to cold forming or hot forming, the tensile strength of the automobile steel can reach 1500 MPa or above during cold forming, the tensile strength of the automobile steel can reach 1800 MPa or above after hot forming, meanwhile, precious metal is not added, and the production cost is low.

The utility model discloses a cold rolling mill for reinforcing steel bar machining, and belongs to the technical field of reinforcing steel bar machining. The machine body comprises a transverse plate, a row of feeding ports are formed in the front end of the machine body, a row of through holes are formed in the two sides of the machine body, a T-shaped groove is formed in the machine body, a motor mounting hole is formed in the back of the machine body, the motor mounting hole is communicated with the T-shaped groove, and the cleaning assembly comprises a cleaning brush. The cleaning brush is installed in the feeding port, first bearings are arranged in the pair of through holes close to the front end of the machine body in a matched mode, first impurity removal rollers are arranged in the two first bearings in a matched mode, two electric push rods are installed on the transverse plate, the telescopic ends of the two electric push rods point to the first impurity removal rollers, and the servo motor is installed in the motor installation hole. The cleaning brush and the impurity removal roller are arranged to clean the surface of steel, meanwhile, the cutting assembly is arranged to cut rolled steel, and the problem of cleaning oxidation impurities on the surface of the steel is solved.

The invention discloses an efficient and low-cost high-strength steel plate for a 1300MPa-grade low-temperature engineering structure and a manufacturing method of the high-strength steel plate, and belongs to the technical field of low-carbon microalloyed steel production. Optimized steelmaking, heating, rolling, pre-straightening, relaxation, controlled cooling, hot straightening and tempering processes are adopted, an ultra-fast cooling and laminar cooling mode is adopted for controlled cooling, chemical components of the steel plate contain Ce, and finally the problems that the 1300MPa-level hot-rolled steel plate with the thickness of 10-50 mm produced through an online cooling process is low in toughness, high in yield ratio, low in flaw detection qualification rate and uneven in plate shape are solved.