160 results about "Backup roll" patented technology

The invention provides an evaluation method for surfacing repair of a supporting roller, and belongs to the technical field of surfacing repair, and the evaluation method comprises the following steps: S1, preprocessing: constructing a digital twinborn model according to size data; s2, defect detection: analyzing the flaw detection data in combination with a convolutional neural network, generating defect data, and feeding back the defect data to the digital twinborn model in real time; s3, process design: inputting the optimized process parameters and material component information into a digital twinborn model; s4, surfacing repair: collecting data of temperature, stress and welding parameters in real time, and associating the data with the digital twinborn model in real time; and S5, post-welding treatment is conducted, specifically, detected data are fed back to the digital twinborn model, and the effect of the whole surfacing repair process is evaluated. According to the evaluation method for surfacing repair of the supporting roller, accurate evaluation and optimization of the surfacing repair process of the supporting roller are achieved, the repair quality and efficiency are improved, the production cost is reduced, and a powerful guarantee is provided for stable operation of steel rolling production.

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 invention discloses a supporting roller and a preparation method thereof, belongs to the technical field of preparation of supporting rollers, and solves the problems that an existing preparation method of the supporting roller is long in production period, and high toughness of the interior cannot be ensured while high hardness of a roller surface is ensured. The preparation method comprises the following steps: thermally transferring a forged supporting roller forge piece into a heating furnace at 661-680 DEG C, and preserving heat; raising the temperature to 900-960 DEG C and keeping the temperature; air cooling: cooling the roller body to 400 + / -50 DEG C, and putting the roller body into a furnace with the temperature of 400 DEG C; reducing the furnace temperature to 300-350 DEG C and preserving heat; raising the temperature below a phase change point Ac1 and preserving heat; rapidly raising the temperature to 960-1000 DEG C and keeping the temperature; oil-cooling quenching is carried out, and oil can be discharged when the surface temperature of the supporting roller reaches 200 + / -20 DEG C; keeping the temperature at 250-300 DEG C; raising the temperature to 550-630 DEG C and keeping the temperature; cooling to 400 + / -20 DEG C; continuously cooling to 200 DEG C or below, discharging from the furnace, and air-cooling to room temperature; rough machining; and then the supporting roller is subjected to differential temperature heat treatment, and a supporting roller product is obtained. The method is simple, and the prepared supporting roller completely meets the technical requirements.

The invention relates to the technical field of forged steel supporting roller quenching, in particular to an induction type quenching device for forged steel supporting roller production, which comprises a base, a lifting plate is arranged on one side of the top of the base, a rotating plate is rotatably connected to the lifting plate through a rotating shaft, a clamping assembly is arranged on the rotating plate, and a water storage tank is fixedly connected to the top of the base; according to the forged steel supporting roller clamping device, the arranged clamping assembly is combined with the self-adaptive clamp, the forged steel supporting roller is firstly positioned and pre-clamped so as to ensure that the forged steel supporting roller can be stably clamped through the upper tip and the lower tip, then the trapezoidal guide block is promoted to move in combination with the hoisting operation, secondary reinforced clamping is conducted on the forged steel supporting roller, and the clamping efficiency is improved. And the position of the clamping base is synchronously locked, the anti-disengaging type stable clamping effect in the hoisting and feeding process is achieved, through the arranged quenching assembly, instant water spraying quenching treatment after induction heating is achieved, and the quenching efficiency and quality of the large forged steel supporting roller are improved.

The invention discloses steel for a supporting roller and a preparation method of the steel, belongs to the technical field of preparation of steel for supporting rollers, and solves the problems that an existing preparation method of the steel for the supporting roller is long in production period, and high toughness of the interior cannot be ensured while high hardness of a roller surface is ensured. The preparation method comprises the following steps: thermally transferring a forged steel forge piece for the supporting roller into a heating furnace at 661-680 DEG C, and preserving heat; raising the temperature to 900-960 DEG C and keeping the temperature; air cooling: cooling the roller body to 400 + / -50 DEG C, and putting the roller body into a furnace with the temperature of 400 DEG C; reducing the furnace temperature to 300-350 DEG C and preserving heat; raising the temperature below a phase change point Ac1 and preserving heat; rapidly raising the temperature to 960-1000 DEG C and keeping the temperature; oil quenching: discharging oil when the surface temperature of the supporting roller reaches 200 + / -20 DEG C; keeping the temperature at 250-300 DEG C; raising the temperature to 550-630 DEG C and keeping the temperature; cooling to 400 + / -20 DEG C; and continuously cooling to 200 DEG C or below. The method is simple, and the prepared steel for the supporting roller can meet the technical requirements.

The utility model provides an upper supporting roll balancing device of a finishing machine. The upper supporting roll balancing device comprises a rack, the driving mechanism is used for simultaneously outputting two groups of horizontal forces in opposite directions; the force conversion mechanism is used for correspondingly converting each group of horizontal force into a group of force in the vertical direction at the same time; each group of vertical force has the same direction; the first end of the pull rod mechanism is connected with the force conversion mechanism, and the second end of the pull rod mechanism is matched with the T-shaped groove in the top of the upper supporting roller bearing seat. Therefore, the acting force in the horizontal direction and the acting force in the vertical direction are synchronously converted through a single driving source, the problem of poor synchronism caused by independent work of multiple traditional hydraulic cylinders is solved, the inclination risk in the lifting process of the upper supporting roller is prevented, and potential safety hazards of equipment are eliminated; meanwhile, complex detection elements such as a displacement sensor are omitted, the system structure is simplified, the equipment cost and the failure rate are reduced, and stable lifting of the upper supporting roller under the two working conditions of pushing-in and pushing-out is achieved.

The utility model relates to the technical field of heat treatment, in particular to an induction quenching device for a large forged steel supporting roller, which reduces solid impurities in cooling liquid, facilitates recycling of the cooling liquid, and is convenient to use and high in practicability. Comprising a bottom plate, a support and an electromagnetic induction heating coil, and the electromagnetic induction heating coil is fixedly installed at the upper end of the bottom plate through the support; the inner supporting chuck is installed on the bottom plate through the moving mechanism, the moving mechanism is used for moving the inner supporting chuck, the water tank is fixedly installed on the bottom plate through the supporting frame, a cavity is formed in the water tank, an opening is formed in the upper end of the water tank, and the spraying mechanism is installed on the water tank; the spraying mechanism has a spraying function, the filtering mechanism is installed in a cavity of the water tank and has a filtering function, and cooling liquid is arranged in the cavity of the water tank.

The utility model discloses a rotary driving mechanism for induction heating integral quenching of a bearing ring, which is characterized in that a horizontal support frame is arranged on diagonal lines of four corners of a quenching tank in a cross manner, and a worm and gear transmission mechanism is arranged at the cross center position of the horizontal support frame; the worm and gear transmission mechanism inputs power by a torque motor through a worm gear speed reducer, a gear is arranged on a worm gear shaft, the gear is meshed with a rack, a rotary positioning roller is movably supported and positioned on the annular surface of a workpiece, and the workpiece can be driven to rotate when a driving supporting roller rotates; the structure is compact and reasonable in design, accurate and stable control over overall rotating operation of the induction quenching workpiece can be achieved, the rotating positioning rollers make contact with the annular face of the workpiece all the time in the heating and quenching process, the device adapts to workpiece size and stress changes caused by thermal expansion when the workpiece is heated and cold contraction when quenching cooling is conducted, swinging of the workpiece during high-speed rotating is avoided, and the workpiece quality is improved. Quenching heating and cooling are more uniform, and the product quality of induction heating whole quenching workpieces is improved.

The invention discloses a high-performance cast cold roll evaluation method based on stress of a working layer and a bonding layer, and belongs to the technical field of metallurgical mechanical equipment design and life evaluation, and the method comprises the following steps: calculating the maximum contact pressure between a working roll and a supporting roll and the flattening width of a contact surface; further determining the maximum shear stress in the working roll and the depth position corresponding to the shear stress; according to radius changes of the working roller in different wear stages, the maximum contact pressure and the contact surface flattening width in different wear stages are calculated for multiple times, and then normal stress at the position of a bonding layer in each stage and shear stress derived from the normal stress are calculated; performing simulation verification on calculation data based on a stress field of finite element simulation; comparing the shear stress of the bonding layer obtained after calculation with the total stress level after the residual stress is considered, and the allowable shear stress of the same material; and the risk is judged. The service life of the roller can be prolonged, and the equipment loss cost of cold-rolled strip steel production is reduced.

The utility model discloses an automatic adjusting device of a core rod supporting roller for a cold rolling seamless steel pipe production line, relates to the technical field of automatic adjusting device structures of supporting rollers, and aims to solve the problems that the supporting effect is influenced and the processing of the core rod is influenced because the conventional supporting roller cannot be automatically adjusted conveniently when supporting the core rod. Mounting supporting frames are installed on the two sides of the upper portion of the stable base, limiting sliding grooves are formed in the mounting supporting frames, mounting supporting bases are installed on the upper portions of the mounting supporting frames, fixing bases are arranged at the upper ends of the mounting supporting bases, and hydraulic devices are installed on the upper portions of the mounting supporting bases. A hydraulic device is installed on the upper portion of the installation supporting frame, a telescopic rod is installed below the hydraulic device, a limiting installation base is arranged at the lower end of the telescopic rod, a supporting roller is installed between the two installation supporting frames, installation shafts are arranged at the two ends of the supporting roller, movable sliding bases are installed on the two sides of the supporting roller, and limiting clamping bases are arranged at the upper ends of the movable sliding bases.

The invention relates to the technical field of bearing seat cleaning, in particular to supporting roller bearing seat surface oil, rust and scale removing equipment and method.The supporting roller bearing seat surface oil, rust and scale removing equipment comprises a box body, the box body is arranged in a pit formed in the ground, a high-pressure flushing pump, a cleaning oil tank and an oil cleaning pump are fixedly arranged above the ground, and the output end of the high-pressure flushing pump communicates with a hard pipe and a hose; one end of the hose is communicated with a high-pressure water gun, one end of the hard pipe is communicated with a purging pipe structure, a roller saddle is fixed at the bottom end of the box body, a liquid collecting box is arranged below the box body and close to one side, a grating plate covers the liquid collecting box, and a sewage pump is arranged above the grating plate; the purging pipe structure comprises an inner side face nozzle set, a bottom face nozzle set and an outer side face nozzle set, and the roller saddles are located on the two sides of the bottom face nozzle set. The problems that dirt on the outer side of an existing back-up roll bearing seat is very difficult to clean manually, cleaning is not thorough through a conventional method, and great safety risks exist during manual cleaning are solved.

The invention belongs to the field of hot continuous rolling strip steel production processes, and particularly relates to a process lubricating method for a hot continuous rolling unit in the rolling process, which comprises the following steps of: determining a process lubricating oil proportion of each rack; collecting a head and tail cutting signal of a flying shear and an on-load signal of a rolling mill, and preparing an oil-water mixture based on the proportion of process lubricating oil; after an on-load signal of the F1 is triggered, an oil-water mixture is sprayed to a supporting roller of the F1, and the rotating supporting roller transmits the oil-water mixture to a working roller in contact with the supporting roller; after the on-load signals of F2, F3 and F4 are triggered, delaying for first preset time, and spraying an oil-water mixture onto a working roller of a rack; after an on-load signal of the F5 is triggered, delaying a second preset time and spraying an oil-water mixture onto a working roller of the F5; and when a tail cutting signal of the flying shear is triggered, the hot rolling oil valve is closed, and the oil-water mixture injection valve is closed after a third preset time is delayed after the tail cutting signal is triggered. The problem of slipping of the first rolling mill is completely eradicated.

The invention discloses a convexity adjusting device for a working roll of a straightening machine and the straightening machine, relates to the technical field of straightening machines, and aims to solve the problems of how to flexibly and dynamically adjust each supporting roll on the straightening machine and improve the straightening precision and the surface quality of a plate. The convexity adjusting device for the working roll of the straightening machine is applied to the straightening machine, and the straightening machine comprises a rack and the working roll rotationally arranged on the rack. The convexity adjusting device for the working roll of the straightening machine comprises a supporting roll structure, a supporting roll structure and an adjusting device, the supporting roller structures are sequentially arranged in the axial direction of the working roller. The lifting structures are correspondingly and fixedly connected with the supporting roller structures, and the supporting roller structures are located between the lifting structures and the working rollers; the lifting structure is used for driving the supporting roll structure to press or be away from the area of the working roll corresponding to the supporting roll structure; the first mounting plate is fixed on the rack; the end, away from the supporting roller structure, of the lifting structure is fixedly connected with the first mounting plate.

The invention discloses a temper mill and finishing mill system for a pickling galvanizing unit, and relates to the technical field of strip steel leveling in steel production equipment, the temper mill and finishing mill system comprises an uncoiler, a pickling section, a temper mill, a galvanizing section, a finishing mill and a coiler which are arranged along the direction of a production line, the temper mill is a four-roller temper mill, the temper mill adopts a dry-type leveling mode, and the recoiling machine is a four-roller temper mill. A working roller wiper and a supporting roller wiper are arranged, and a suction device is arranged to suck away dust generated in the leveling process; and the finishing machine is provided with a wet finishing spraying beam and a high-pressure water cleaning trolley, so that the real-time lubrication and cleaning of strip steel and rollers can be realized, and the quality of a galvanized sheet finished product is effectively ensured.

The utility model provides a kind of replacement device for rolling mill backup roll.The utility model includes replacement subassembly and the backup roll pin cooperation of replacement subassembly, the backup roll pin includes pin head, steel wire rope connecting part and arc lifting lug, pin head, steel wire rope connecting part and arc lifting lug are sequentially connected, replacement subassembly includes handle portion, lengthening rod portion and hooking portion, the handle portion, lengthening rod portion and hooking portion are sequentially connected, the main part of the hooking portion is S shape, the end of the hooking portion can be placed into arc lifting lug.The utility model directly expands the arm action range of operator by setting lengthening rod portion, so that it can reach the backup roll box area that needs to climb ladder originally on ground or safety platform, by setting S-shaped hooking portion, the arc lifting lug of backup roll pin can be reliably hooked / catched, the design of S shape makes it can pull pin, and also can stably push pin, effectively transmit the force applied by operator on ground to pin.

A coating device includes a backup roll configured to transport a workpiece; a coating die configured to discharge a coating liquid onto the workpiece; a drive section capable configured to drive the backup roll; and a heat dissipation section configured to dissipate heat generated in the drive section.

The application discloses a forging method of a wide and thick plate rolling mill supporting roller, belongs to the technical field of wide and thick plate rolling mill supporting roller manufacturing, and is used for solving at least one problem that in the prior art, the forging deformation and the surface quality of an oversized ingot are difficult to be considered, the excess metal at a bulging position is accumulated to the center to form deep layer folding, and the material yield rate and reliability of an oversized supporting roller are poor. The forging method comprises the following steps: providing a blank, pressing the blank, pre-drawing the blank after the blank is pressed, obtaining a square blank, upsetting the square blank in the height direction along the axial direction, obtaining an upset blank, compacting and drawing the upset blank, obtaining a compacted and drawn blank, drawing the compacted and drawn blank to the diameter of a forged roller body to obtain a basic blank, finally drawing the two ends of the basic blank to form a roller neck, and obtaining a final forged product. The application can be used for the forging of the wide and thick plate rolling mill supporting roller.

The present application relates to the technical field of hot continuous rolling low carbon steel, in particular to a method for controlling the surface pitted scale defects of hot continuous rolling low carbon steel. 1) The temperature of the low carbon steel heating furnace is controlled at 1160-1200 DEG C; 2) according to the change of the target thickness of the product, the entry temperature of the finishing mill is controlled: if the target thickness is less than or equal to 2.2 mm, the entry temperature of the finishing mill is controlled at 1035-1060 DEG C; if the target thickness is greater than 2.2 mm, the entry temperature of the finishing mill is controlled at 1015-1040 DEG C; 3) the first rolling mill of the finishing mill is F1, and the Nth rolling mill is FN in turn, and the roll gap cooling water of F1-F5 is put in; 4) the hot rolling oil manifold and nozzle are installed at the outlet of the backup roll of F1-F5; 5) the high speed steel work roll is used for the rolling mill; 6) the water pressure of F1-F7 is controlled at 0.5-1.2 MPa; 7) the target value of the finish rolling temperature is controlled at 750-900 DEG C; 8) the cycle of the high speed steel work roll is controlled within 2-6 cycles; 9) the same batch of high speed steel work roll is avoided to be at the end period. The surface pitted scale defects of hot continuous rolling low carbon steel can be effectively controlled, and the surface quality of the strip steel is improved.

The invention relates to the technical field of steel rolling equipment, and provides a method for stably shearing cold-rolled thin strip steel, which comprises the following steps: enabling the lower surface of the strip steel to be in a horizontal state through a support roller and a free roller, and controlling a press roller which is arranged opposite to the support roller in the vertical direction to horizontally contact with the upper surface of the strip steel, the strip steel is horizontally gripped between the pressing roller and the supporting roller, and the strip steel is sheared through the cutter head. The invention further provides a control device for stable shearing of the cold-rolled thin strip steel to execute the method. According to the method and the control device, the cutterheads on the two sides of the strip steel can stably shear the strip steel clamped between the pressing roller and the supporting roller, and the technical problem that in the prior art, the middle of the strip steel slightly arches, and consequently edge cutting is poor is solved.

The present application relates to the technical field of steel plate rolling, in particular to a kind of plate mill calibration method, comprising the following calibration steps: after completing mill equipment zero adjustment, open main drive to rotate at preset speed;When hydraulic press-down pressurization, stop when pressurizing each step pressure value n, after supporting roller complete rotation one week, continue pressurization again, until pressurization to maximum stiffness test pressure value m, pause pressurization;According to the roll gap and pressure data under constant pressure value obtained according to the above calibration steps, the duration under constant pressure value specifically refers to the duration when stopping pressurizing each step pressure value n and waiting for supporting roller complete rotation one week.The present application pressurizes according to step pressure during calibration process, and after stopping and waiting for supporting roller complete rotation one week, continue pressurization, the average roll gap and average pressure of mill under each step pressure can be obtained, using these data, model can regress more accurate mill stiffness curve under current supporting roller state.

This invention relates to a method for producing support roll steel, belonging to the field of metallurgical industry, and solves the problems of high cost and severe shrinkage porosity in existing support roll steel. The method for producing support roll steel includes: smelting, deoxidizing, desulfurizing, and refining the support roll steel ingot raw material, adjusting the alloy composition to obtain a first portion of support roll steel molten steel, tapping the steel, vacuum casting, and solidifying to obtain a solidified billet shell and liquid steel inside the billet shell; smelting, deoxidizing, desulfurizing, and refining the support roll steel ingot raw material, adjusting the alloy composition to obtain a second portion of support roll steel molten steel, tapping the steel, mixing the second portion of support roll steel molten steel with the liquid steel inside the billet shell within the solidified billet shell of the first portion of support roll steel, vacuum casting, solidifying to obtain a complete support roll steel ingot, demolding, removing the sprue, forging, removing the riser, heat treating, and machining to obtain the support roll steel; the composition of the first portion of support roll steel and the second portion of support roll steel molten steel differs.

The utility model discloses an abrasive paper compounding device, it includes loading subassembly, coating subassembly and compounding subassembly, the coating subassembly includes backup roll, coating roll and gluing groove, backup roll is located just below coating roll, gluing groove is used for receiving adhesive, the bottom wall of gluing groove is equipped with heating element, and the heating element is equipped with heating element. One end of the gluing groove is open and abuts against the peripheral wall of the coating roller, and a gap is reserved between the gluing groove and the coating roller. The composite device has the advantages that the structure of the coating roller is simplified, meanwhile, the heating piece is arranged outside the gluing groove for receiving the adhesive, and when the heating piece is aged, the heating piece can be directly maintained outside the coating roller, so that the composite device is more convenient and quicker to maintain and repair as a whole.

The invention discloses an oil film bearing supporting roll R-angle arc crack depth detection and repair method, and belongs to the field of roll flaw detection and repair, and the method comprises the following steps: placing a K1 angle probe on the surface of a calibration block; sound velocity and reference sensitivity are set for the K1 angle probe; gridding detection is carried out on the roller body of the oil film bearing supporting roller; adjusting the position of the K1 angle probe to determine the circumferential crack depth and the maximum value; and repairing by adopting a V-shaped groove surfacing method according to the maximum value of the crack depth. The method can accurately determine the crack depth and the slotting size, saves the repair cost, maximizes the use value of the roller, and improves the production rate of a steel production line.

An automatic plugging device for oil return of a metal foil rolling supporting roll is characterized in that an oil return socket with a steel structure and a quick connector fixedly connected with the oil return socket are arranged on the automatic plugging device in an up-down moving manner, and an oil return pipe is connected with the quick connector; when a metal foil rolling supporting roller is replaced, the supporting roller moves in the axial direction of the roller replacing rail, the oil return plug at the end of the transmission side of the supporting roller can be automatically inserted into or pulled out of the oil return socket of a steel structure, and therefore automatic insertion and pulling of an oil return pipe in the roller replacing process of the supporting roller are achieved. The oil return socket is movably arranged up and down, so that automatic following of the oil return pipe can be realized when the supporting roll is adjusted up and down in the working process; in the process of replacing the supporting roller, the oil return pipe is connected without manual operation, and the problems that the oil return pipe is inconvenient to plug and unplug and the operation time is long in the previous roller replacing process are thoroughly solved.

The invention provides a special tool for mounting a base plate at the bottom of a lower supporting roll bearing seat, which relates to the technical field of rolling mill roll system assembly and comprises a supporting base, universal wheels arranged at the bottom of the supporting base, a hydraulic telescopic mechanism arranged at the upper part of the supporting base and an elastic supporting mechanism arranged at the upper part of the hydraulic telescopic mechanism, an internal spring is arranged in the elastic supporting mechanism, a limiting mechanism for preventing the base plate from displacing from the upper portion of the elastic supporting mechanism is arranged on the upper portion of the elastic supporting mechanism, and a fixing mechanism for fixing the lowest moving position of the limiting mechanism is arranged on the side portion of the elastic supporting mechanism. The cushion block can move in the horizontal direction and the vertical direction, whether the cushion plate is installed in place or not is determined through the elastic supporting mechanism, the situation that the cushion plate to be installed is pressed and damaged is prevented while the installation quality is guaranteed, and the installation efficiency of the cushion block and the safety of the installation process are further improved by arranging the limiting mechanism.

The utility model relates to the technical field of supporting rollers, and discloses a forged steel supporting roller convenient to disassemble and maintain, which comprises a base, the inner wall of the base is connected with a sliding mounting plate in a sliding manner, the inner wall of the base is fixedly provided with a guide rail, the outer wall of the base is fixedly provided with a motor I, and the motor I is fixedly provided with a motor II. A first double-end lead screw is fixedly mounted on an output shaft of the first motor, a supporting roller body is movably connected to the inner wall of the sliding mounting plate, a threaded rod is rotatably connected to the inner wall of the sliding mounting plate, and a limiting rod is slidably connected to the inner wall of the sliding mounting plate. A threaded rod is rotated to drive a threaded sleeve to move upwards, then the threaded sleeve drives a pressing piece at the bottom to move upwards, at the moment, the fixing relation of a supporting roller body disappears, a first motor is started to drive a first double-end lead screw to rotate, the first double-end lead screw drives two sliding mounting plates to move towards the two sides, and then the supporting roller body is fixed. The sliding mounting plate is separated from the supporting roller body, and the supporting roller body can be taken out at the moment.

The utility model discloses an adjustable high-speed wire rod mill spare roller storage rack which comprises two bottom frames which are divided into a front structure and a rear structure, a bottom plate is welded to the upper ends of the bottom frames, a first fixing frame is welded to the left side of the upper end of the bottom plate, and a second fixing frame welded to the right side of the upper end of the bottom plate is the same as the first fixing frame in structure. A base is welded between the first fixing frame and the second fixing frame, and the bottom end of the base is connected to the bottom plate. The fixing frames are arranged on the two sides of the upper end of the bottom plate, the containing bases are arranged on the inner sides of the two fixing frames, the roller shafts can be placed on the containing bases, and the movable adjusting device is arranged between the two fixing frames and can be adjusted according to the widths of the roller shafts so as to adapt to placement of the roller shafts with different widths; the reinforcing plates are welded to the outer sides of the two fixing frames, and the reinforcing plates are welded to the bottom plate, so that the safety of the fixing frames is improved, and meanwhile the overall attractiveness of roll shaft storage is guaranteed.

The invention provides a stainless steel cold continuous rolling unit, which relates to the technical field of rolling equipment and comprises a rolling mill section, the rolling mill section comprises a plurality of rolling mills arranged in sequence, and each rolling mill comprises a working roll, a middle roll and a supporting roll. The symmetrical center line of the cross section projection of the supporting roller in the direction perpendicular to the extension direction of the supporting roller is deviated by a first preset distance relative to the symmetrical center line of the cross section projection of the middle roller in the direction perpendicular to the extension direction of the middle roller; the symmetrical center line of the cross section projection of the working roller in the direction perpendicular to the extension direction deviates by a second preset distance relative to the symmetrical center line of the cross section projection of the middle roller in the direction perpendicular to the extension direction, and the first preset distance is larger than the second preset distance. The roll system of the rolling mill adopts a double-eccentric design, and roll system stability and rolling mill service life can be both considered.

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