243 results about "Work roll" patented technology

The invention relates to the technical field of laser cladding repair, and provides a positioning and clamping system and method for repairing the surface of a large working roll of a steel mill based on laser cladding, a three-field coupling prediction model of a temperature field, a stress field and a displacement field is established, and a partial least squares regression algorithm is combined with a Kalman filter to realize multi-step prospective prediction. According to the predicted thermal deformation, self-adaptive compensation control is implemented through a three-layer cascade compensation mechanism composed of a hydraulic drive, a piezoelectric ceramic driver and a laser head adjusting mechanism. The system adopts a time domain, frequency domain and time-frequency domain joint analysis method to extract vibration characteristics, vibration types are classified and identified through a support vector machine, and an active-passive hybrid suppression strategy is adopted for different vibration sources. High-precision positioning and stable clamping of the large working roller in the laser cladding repairing process are achieved, and the thickness uniformity and the surface quality of a cladding layer are remarkably improved.

The invention discloses equipment and a method for customizing front and back morphology structures of an invar alloy ultra-thin strip, and belongs to the field of invar alloy ultra-thin strip processing. The equipment comprises a working roller with differentiated surface topography, a first middle roller with a polyurethane-based organic material coating layer, an ultrasonic clamping device, an integrated tension weighting control system and a central control unit. By configuring different surface roughness of the upper working roll and the lower working roll and combining stable transverse pressure stress and axial ultrasonic vibration provided by the first middle roll, asymmetric plastic flow and shape copying of metal on the front face and the back face of the strip are achieved. In the rolling process, plate shape defects caused by friction differences are dynamically compensated by cooperatively adjusting the roll shifting amount of the first intermediate roll and the convexity of the backing roll saddle, finally, customized production of the 4J36 invar alloy ultra-thin strip with the thickness of 15 microns is achieved, the A face and the B face of the strip have different surface roughness, and the surface roughness of the strip is greatly improved. And the specific requirement of a fine metal mask plate pore-forming process on the surface state of the base material is met.

The invention discloses a method for improving the same-plate difference of non-oriented silicon steel through multi-process coordinated regulation and control. The method comprises the following steps: cooperatively controlling the following key process parameters: 1) hot continuous rolling process control: plate shape target control; width control; configuring and grinding a roller; a roller changing period; (2) five-rack acid continuous rolling procedure control: roller configuration; grinding the roller; and roll bending force control is conducted, specifically, the roll bending force of working rolls of all the racks is set to be 320 + / -20 kN for the rack S1, 330 + / -20 kN for the rack S2, 330 + / -20 kN for the rack S3, 330 + / -20 kN for the rack S4 and 330 + / -20 kN for the rack S5, an automatic mode is adopted, and dynamic adjustment is conducted according to feedback of a real-time strip shape instrument. According to the method, key process parameters in the whole hot rolling and cold rolling process are accurately controlled, the synergistic effect is formed, the transverse thickness uniformity of the strip steel is fundamentally improved, and therefore the high-quality non-oriented silicon steel product with the extremely small same-plate difference is obtained.

The utility model relates to the technical field of rolling mills, and discloses four-roller rolling mill equipment with a roller surface lubricating device, which comprises a transverse plate, two vertical plates are symmetrically and fixedly connected to the upper surface of the transverse plate, and two supporting rollers are rotatably connected between the two vertical plates in a penetrating manner from top to bottom. Two working rollers are rotatably connected between the two vertical plates and the two supporting rollers in a penetrating mode from top to bottom, and a damping mechanism is arranged outside the transverse plate. A lubricating mechanism is arranged in front of the two vertical plates on the upper surface of the transverse plate; by arranging the damping mechanism, looseness and fatigue damage of parts caused by vibration are remarkably reduced, so that the service life of equipment is prolonged, the lubricating mechanism realizes efficient and uniform coating on the surface of the working roller, rolling friction force is reduced, roller surface abrasion and workpiece surface scratches are reduced, and the service life of the equipment is prolonged. And the roller surface temperature is effectively controlled through the cooling effect of the lubricating oil, and roller surface damage caused by local overheating is avoided.

According to the off-line brush roll adjusting device and method, an upper working roll assembly and a lower working roll assembly are placed in a containing groove of an overturning frame body, then the overturning frame body and the working roll assemblies are driven by a driving device to rotate to adjust the angle, and a working roll is pressed against the position, close to a brush roll, of a working roll bearing seat under the action of gravity; and then the brush roll is driven by the hydraulic motor of the brush roll, the gap is eliminated, the brush roll does not need to be adjusted on line, the operation is simple, the adjusting time is shortened, the working efficiency is improved, and the labor burden of workers is greatly relieved. According to the invention, the real state of the working roll and the brush roll during working can be simulated in an off-line manner. When the overturning oil cylinder extends out, the overturning frame body is horizontal, and at the moment, the working roll device can be hoisted. After hoisting is completed, the overturning oil cylinder retracts, the working roller device is overturned by 20 degrees on the overturning frame, the working roller is completely attached to the bearing seat under the action of gravity, the bearing backlash is eliminated, and the real working condition is simulated.

The application discloses a kind of work roll box grinding full-automatic overturning and supporting system, belong to machine tool technical field, comprising: support seat first base is set on common base, sliding component is set on first base, support seat second base and sliding component sliding connection, second base drive component is set on support seat first base, bearing box support is set on support seat second base, support seat detection component is set on support seat first base;Lifting assembly is set on positioning support, roll support is set on lifting assembly, soft landing detection component is set on positioning support;Guide rail shell is set on common base, box turning drive component is set on guide rail shell, box turning support is set on arc-shaped overturning gear, box turning detection component is set on guide rail shell.The application can avoid the various interference that occurs during work roll box grinding action process overturning roll box.

This invention provides a fully automatic cold rolling equipment for producing copper strip, belonging to the technical field of fully automatic cold rolling equipment for producing copper strip. It includes: a main body, mounting plates, mounting frames, a cleaner, a waste trough, and an electric cylinder. Mounting plates are respectively installed on the upper and lower front sides of the main body. Mounting frames are installed on the inner sides of each mounting plate. Electric cylinders are installed on the front sides of each mounting frame. A cleaner is installed on the rear side of each mounting frame. The cleaner consists of a felt layer and a fiber cloth layer. A waste trough is installed on the inner side of each mounting frame. The cleaner, driven by the electric cylinder, presses against the roller surface from the side of the work roll end. The felt layer scrapes off large copper shavings, the fiber cloth layer cleans residual oil, and the waste trough collects the waste material. This system is interlocked with the main drive motor, achieving automatic online cleaning without stopping the machine. This effectively improves the surface quality of the copper strip and production efficiency. The structure is compact and easy to install and modify on existing equipment.

The utility model relates to the technical field of cold roll heat treatment, in particular to a novel cold-rolled working roll heat treatment device which comprises a tempering furnace, a furnace door, a heat exchanger and a heat exchanger, a mounting structure is mounted on the inner side of the tempering furnace, the mounting structure comprises a fixing column, the fixing column is fixedly mounted on the inner wall of the tempering furnace, a sliding block is slidably mounted on the fixing column, and a positioning groove is formed in the top surface of the sliding block; a collecting structure is installed on the front face of the tempering furnace and comprises a fixing frame, and the fixing frame is fixedly installed at the lower end of the front face of the tempering furnace. The positioning groove is formed in the top face of the sliding block, during use, a cold roller can be vertically placed into the positioning groove, convenient installation of the cold roller on the sliding block is achieved, the positioning groove is of a V-shaped structure, the installation requirements of the cold rollers with different diameters can be met, meanwhile, the cold roller can be prevented from shaking on the sliding block, and the service life of the cold roller is prolonged. And the use experience of the device is improved.

The utility model relates to the technical field of bearing box discloses a kind of finishing mill work roll bearing box end cover, including the end cover body of being movably installed on bearing box ontology, the end cover body is installed on bearing box ontology by bolt ontology, the side of the end cover body close to bearing box ontology is provided with alignment component and sealing rubber ring, the alignment component is evenly set on end cover body;In the utility model, by setting alignment component, in the process of end cover body installation to the side of bearing box ontology, it is convenient for staff to temporarily fix end cover body in the side of bearing box ontology, avoid needing staff to manually fix end cover body, simultaneously avoid the end cover body deviation leads to needing to adjust position again, speed up the efficiency of installation.

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 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 discloses a kind of eighteen roller thrust wheel state detection devices, belong to thrust wheel technical field, comprising: driven wheel, driven wheel and the thrust wheel rolling connection in the thrust structure for the axial limiting of work roll in eighteen roll mill;Vibration probe, vibration probe is connected with thrust structure, for detecting the vibration amplitude of thrust structure;And hall component, hall component includes: hall probe and magnet, magnet is located on the circumferential side wall of driven wheel, hall probe is spaced apart from driven wheel, and hall probe is used to detect the rotation from thrust wheel.In the case where not damaging thrust wheel, the real-time monitoring of thrust wheel state is realized, the problem of various benefit loss caused by rolling mill thrust wear is solved, the rolling mill thrust wear and ablation are prevented, personnel casualties and property losses caused by safety accidents are avoided due to equipment failure, the equipment is maintained in time, the product failure rate is reduced, the product quality is improved, and the production efficiency is improved.

The present application relates to a kind of hot galvanizing production line finishing machine roll replacement reduces the method of degraded product, belong to hot galvanizing continuous production process technical field.The technical scheme is: according to the following steps to operate: step one: reduce process section one and process section two strip speed;Step two: when strip weld reaches finishing machine outlet, process section two strip speed reduces to 0 m / min;Step three: replace finishing machine work roll, and flushing is carried out to the work roll after replacement;Step four: after finishing machine work roll flushing is completed, process section two speed strip starts to run with the minimum strip running speed specified by finishing machine, tension leveler and roll coater, when finishing machine, tension leveler and roll coater start finishing, tension leveling and roll coating, process section two strip speed is gradually increased, and intermediate looper is released, until process section one and process section two restore normal production speed.The beneficial effects of the present application are: it can reduce the degraded product of strip due to not finishing when finishing machine roll replacement.

The utility model provides a working roll capable of reducing transverse thickness difference of cold-rolled strip steel, which relates to the technical field of cold rolling process, a roll convexity is arranged in the middle of a roll body of the working roll, symmetrical strip steel edge thinning areas are arranged at positions of the roll body corresponding to two side parts of the strip steel, and small-diameter areas are formed. The diameter of the roller body corresponding to the strip steel edge thinning area is smaller than the diameter of the roller convexity in the middle of the roller body; wherein the strip steel edge thinning area is an extension area of the part of the strip steel width and the edge of the strip steel in the width direction and is used for counteracting the thickness difference caused by too high rolling pressure of the edge of the strip steel in the rolling process. Rolling mill equipment and rollers do not need to be modified, and roller consumption of the rollers is not increased. And the transverse thickness difference of the strip steel is less than 0.0068 mm.

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.

This invention discloses a process for producing 65Mn steel through continuous casting and rolling of thin slabs, belonging to the field of steel production. The method includes the following steps: steelmaking, casting and rolling, and slow cooling. The steel composition is controlled as follows: C: 0.62%-0.70%, Si: 0.17%-0.37%, Mn: 0.90%-1.20%, P≤0.035%, S≤0.030%, Cr≤0.20%, Ni≤0.30%, Cu≤0.25%, with the balance being Fe and impurities. In the continuous casting process, the slab thickness is 90mm-110mm, the casting speed is controlled at 4.0m / min-4.8m / min, and the temperature difference of the slab cross-section is controlled at 40℃-65℃. In the finishing rolling process, the F3 work roll uses high-speed steel rolls, and the F4 and F5 work rolls use high-nickel-chromium rolls. The crown of the F3 work roll is set to be 200µm larger than that of other steel grades, and the load distribution of each stand follows a decreasing principle. Compared with existing technologies, this method improves the yield rate of straight hair curls.

The application discloses a rolling device and a rolling system, relates to the rolling technical field, and aims to solve the problems of reducing strip defects such as edge wave and edge crack and improving the quality of composite strip. The rolling device comprises a straightening device, an auxiliary device and a rolling device. The straightening device is used for straightening a strip to obtain a straightened strip. The auxiliary device comprises a surrounding lining strip, and the surrounding lining strip has a first accommodating space. In the height direction of the rolling device, the rolling device comprises a first work roll and a second work roll which are oppositely and spacedly arranged, and at least part of the second work roll is located in the first accommodating space. When the rolling device works, the lining strip and the straightened strip are attached together and are located between the first work roll and the second work roll, and the straightened strip is located between the lining strip and the first work roll.

The invention relates to a four-roll or six-roll cold rolling mill (1) configured to roll a metal strip,-a roll stand (2) comprising a first pair of uprights on the front side and a second pair of uprights on the rear side,-an upper working roll (WRS) comprising a roll table configured to be in contact with the upper surface of the metal strip and two guide ends,-a lower working roll (WRI) comprising a first pair of uprights on the front side and a second pair of uprights on the rear side, the invention relates to a metal strip roller comprising a roller table configured to be in contact with a lower surface of a metal strip and two guide ends. A first left and right pushing mechanism (31g, 31d) and a second left and right pushing mechanism comprising all or part of the rotating screw pushing means to ensure lateral displacement between the working rolls and the roll bearings on the working rolls.

The invention relates to the technical field of slag flushing devices, in particular to a slag flushing device and method for a working roll of a rolling mill, the slag flushing device comprises a slag flushing water collecting pipe externally connected with a pressurized water source, and the slag flushing water collecting pipe is provided with collecting and spraying areas and plate blank spacing sections located between the collecting and spraying areas; wherein the collecting and spraying area is provided with a plurality of nozzles in the length direction of the slag flushing water collecting pipe, and the length of the collecting and spraying area is not smaller than the width of a steel billet to be subjected to slag flushing. According to the slag flushing device and method for the working roller of the rolling mill, on the premise that original slag flushing water pressure does not need to be changed, the number of the nozzles is reduced, the slag flushing water pressure of a single nozzle is improved, the slag flushing effect is improved, oxidizing slag accumulation on a roller protection plate can be effectively reduced, and the occurrence rate of pitted surfaces and pits of thick-specification products is greatly reduced; the method is suitable for slag flushing in the steel billet dephosphorization process.

The invention discloses a strip shape control method for ultrahigh-strength low-alloy high-strength steel. The production steps include smelting, continuous casting, hot rolling, acid rolling and continuous annealing. Aiming at the pain and difficulty problem that the shape of a low-alloy high-strength steel plate with the yield strength of 800MPa is not easy to control, structure property control is taken as a breakthrough, Nb + Ti is more than or equal to 0.085% and less than or equal to 0.110%, Cr is more than or equal to 0.15% and less than or equal to 0.50%, the in-roll strength difference is less than or equal to 50MPa, and the plate shape control difficulty in a flattening process is reduced; by taking reduction of wave heredity as a breakthrough, a combined measure of a coiling temperature of 550 + / -30 DEG C, a wedge mean value of + / -10 microns and an acid rolling reduction rate of 45-55% is innovatively provided, the acid rolling plate shape is stably controlled to be less than or equal to 20 IU, and the plate shape control difficulty of a leveling process is reduced; the plate shape control capability of the temper mill is remarkably improved through the matching design of the diameter of the working roll, the leveling elongation, the roll bending force distribution and the roll shifting rule by taking the exertion of the capacity of the temper mill as a breakthrough. The plate shape qualification rate of the low-alloy high-strength steel with the yield strength of 800 MPa is increased to 90% or above from 20% or below, and stable production is achieved.

The application discloses a kind of cleaning device of work roll for galvanized strip steel processing, including bearing base plate, rolling mill main body, roller conveyor, straightening machine main body, cutting machine main body and flattening machine main body, and the bottom end in rolling mill main body is connected with cleaning assembly by cleaning cavity, cleaning assembly can clean the work roll body in rolling mill main body, cleaning assembly includes horizontal mechanism, swing mechanism and reverse mechanism, swing mechanism can be moved and adjusted left and right, adapt to the work roll body of different positions, swing mechanism top is connected with reverse mechanism, can drive reverse mechanism to swing left and right, adapt to the arc structure of work roll body outside, reverse mechanism includes installation frame, cleaning wheel one and cleaning wheel two etc., under the cooperation of each other, by the reverse rotation of cleaning wheel one and cleaning wheel two, the cleaning effect of work roll body outside is strengthened, and the stripping effect of material on work roll body outside is improved, to realize more high-quality cleaning effect.

Provided is a high-precision metal mask plate low-expansion alloy foil high-surface quality control method, comprising: sequentially performing hot rolling, pickling to remove the oxide skin, first grinding treatment, first cold rolling treatment, second grinding treatment, and second cold rolling treatment on the alloy foil blank. In the first grinding treatment and the second grinding treatment, the grinding wheel rotates along its own axial direction and performs periodic reciprocating motion along the width direction of the plate / band, and the axial direction of the grinding wheel is perpendicular to the surface of the plate / band. In the second cold rolling treatment, the work roll is subjected to the work roll grinding treatment method for grinding treatment, and the polishing roll is first subjected to the work roll grinding treatment method for grinding treatment and then subjected to the polishing roll polishing treatment method for polishing treatment. Through the method, a high-precision metal mask plate low-expansion alloy foil with a thickness of not greater than 0.04 mm and a horizontal / vertical roughness difference rate of ≤25% is obtained, meeting the high-surface quality requirements of the OLED industry.

This application provides a composite roll profile curve for hot rolling work rolls and its design method. The composite roll profile curve is composed of a parabolic roll profile curve and a double circular arc roll profile curve superimposed on each side. The composite roll profile curve is symmetrically distributed on both sides, and each side includes a crown control section, an edge drop control section, and a deviation control section. The crown control section corresponds to the middle area of ​​the strip and adopts a parabolic design to control the crown of the hot-rolled strip. The edge drop control section corresponds to the edge of the strip and is smoothly connected to the crown control section. The positive circular arc curve design can reduce the roll profile change rate at the edge of the strip, improve the edge drop of the strip, and uniformize the wear at the edge of the roll. The deviation control section is connected to the edge drop control section and does not contact the strip. The reverse circular arc curve design can prevent the strip from deviating and losing the clamping of both sides of the roll, causing production accidents. This hot-rolled work roll profile can control the cross-sectional profile of the hot-rolled strip and has the ability to resist strip deviation.

The invention relates to a method for operating a rolling mill and to a corresponding rolling mill. The rolling mill comprises a plurality of rolling stands n, numbered n=1 to N, arranged one behind the other in a rolling direction R, each with two rotary-driven work rolls for rolling a metal strip. Furthermore, a strip tension control loop 120 is provided for controlling the actual strip tension of the metal strip 20 in a drawing section 110 between two rolling stands arranged one behind the other to a predetermined target strip tension. In order to reduce thickness deviations in the metal strip being rolled due to acceleration and / or deceleration phases within the framework of said strip tension control, the invention provides that the control variable is applied not only to a rolling stand limiting the drawing section 110 on the exit or entry side, but also to the rotary drives for other rolling stands or rolls upstream or downstream.According to the invention, at least one rotary drive is integrated into the active belt tension control both before and after the belt section.

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.

The invention discloses rolling equipment and a control method thereof.The rolling equipment comprises an uncoiler, a rolling mill unit, a hydraulic system, a detection device and a central controller, a base metal coil is arranged on the uncoiler, and the uncoiler is used for driving the base metal coil to unfold; the rolling mill unit is arranged at the downstream of the base metal coil and is provided with at least one group of paired working rollers; the hydraulic system is connected with at least one of each group of working rollers and is used for applying pressure to the working rollers, and the pressure applied to the working rollers by the hydraulic system is dynamically adjustable in the rolling process of the rolling mill unit; the central controller is in signal connection with the detection device and the hydraulic system, and after a preset curve of the coiled material is obtained, the hydraulic system is controlled to roll the coiled material in the rolling direction according to the preset curve. And based on the real-time deviation of the thickness of the coiled material at the actual outlet of the detection device and the target thickness curve, a thickness compensation instruction is generated, and the hydraulic system is controlled to dynamically adjust the roller gap and pressure between the working rollers according to the compensation instruction.

This invention discloses a method for controlling water ripple color difference defects on the surface of galvanized automotive exterior body panels. The method includes optimizing and controlling the hot rolling, pickling, and galvanizing processes in the production of galvanized automotive exterior body panels. In the hot rolling process, the heating temperature is controlled at 1200~1240℃, the final rolling temperature at 880~900℃, and the coiling temperature at 550±20℃. In the pickling process, the raw material coil temperature is controlled to ≤60℃, the total pickling reduction rate is 78~80%, the roughness of the F5 stand work rolls is 2.8~4.0μm, and the tensile elongation is 3.0~3.8%, resulting in a cold-hardened coil with a surface roughness of 1.0~1.6μm. The galvanizing process employs a double-leveling process. Using this method, galvanized automotive exterior body panels with good surface quality and uniform coating can be obtained, exhibiting uniform gloss after polishing and free from water ripple defects.

The utility model belongs to the technical field of instant noodle seasoning bag smashing, and particularly relates to an instant noodle seasoning powder raw material smashing machine with an anti-blocking function, which comprises a processing box and further comprises a fixing plate movably mounted on the surface of the processing box, and screws are mounted in the fixing plate in a penetrating manner. Roll shafts are movably installed at one ends of the fixing plates, motors are movably installed on the surfaces of the roll shafts, oil holes are formed in the tops of the roll shafts in a penetrating mode, the roll shafts can be fixed to the surface of the machining box through the fixing plates and then fixed through screws, and after the fixing plates are fixed, the roll shafts can be driven to rotate by starting the motors. During long-term use, when the roll shaft needs to be oiled, the screws are detached, the fixing plates are taken down, then the connection position of the roll shaft and the motor is oiled conveniently, lubricating oil can lubricate the interior of the roll shaft through the oil holes, the roll shaft can be used in cooperation, oiling work can be facilitated, the roll shaft cannot be clamped after long-term work, and ideal smashing can be achieved.

The present application relates to a kind of six-roller cold rolling mill prevents the control method of starting mark, comprising the following steps: (1) when adjusting rolling line of cold rolling mill, pad is placed between the work roll seat of the same side of upper and lower work roll, ensure that upper and lower work roll does not appear single-sided roll surface first press against;After completing adjustment rolling line, remove pad;(2) complete the calibration of work roll and warm roll operation;(3) roll gap press against process control: set the normal press against gradient of roll gap;When roll gap is greater than 5000um, press against gradient is normal press against gradient;When roll gap is between 3000 and 5000um, press against gradient is half of normal press against gradient;Roll gap is from 3000um to target value, and press against gradient is one third of normal press against gradient;(4) build tension starting process control.Reduce or eliminate starting mark, improve the surface quality of product.

The utility model relates to the technical field of work roll placing frames, in particular to a work roll placing frame which comprises a main frame, a plurality of roll placing frames are sequentially and fixedly installed in the main frame from top to bottom, and installation grooves are formed in the tops of the roll placing frames. Corresponding working roller shaft placing grooves are formed in the positions, located on the left side and the right side of the mounting groove, of the top of the roller placing frame, a plurality of working roller bodies are fixedly mounted in the mounting groove, two output shafts of the working roller bodies are located in the corresponding working roller shaft placing grooves, and a motor drives a two-way threaded rod to drive a sliding plate to slide; the working roll shaft clamping groove and the working roll shaft containing groove are precisely closed, the working roll shaft neck is tightly clamped in the axial direction, deviation and sliding during moving or storing are avoided, the roll surface damage risk is reduced, the working roll precision is guaranteed, meanwhile, the automatic clamping mechanism shortens the manual alignment and fixing operation time, and the working roll shaft neck clamping efficiency is improved. The method is matched with the requirement for rapidness of a full-automatic roll changing system of a finishing mill, and non-production time is indirectly shortened.