169results about "Work lubrication devices" patented technology

The invention discloses a self-speed-setting type metal pipe continuous cold rolling device, and relates to the technical field of metal pipe continuous rolling, the self-speed-setting type metal pipe continuous cold rolling device comprises a workbench, the workbench is fixedly connected with a connecting frame, one side of the connecting frame is provided with an inlet used for placing a blank pipe, and the other side of the connecting frame is provided with a metal pipe used for moving out the metal pipe formed by continuous cold rolling. The side, close to the inlet, of the connecting frame is rotationally connected with a rolling roller set, and the side, close to the outlet, of the connecting frame is rotationally connected with a shaping roller set. In the rolling process, when the load of the motor is large due to large resistance, the power of the middle forming roller is cut off, and only the power of the rolling rollers responsible for rolling and the power of the shaping rollers responsible for shaping are reserved, so that the rolling rollers and the shaping rollers on the two sides share the main working load, the overall pressure of equipment can be effectively relieved, and the service life of the equipment is prolonged. The service life of equipment is prolonged, abrasion of a transmission system and a motor is reduced, shutdown caused by too large pressure of the motor is avoided, and the production efficiency stability is guaranteed.

The invention relates to an upper and lower roller reducing independent transmission universal rolling mill and a control method thereof, and belongs to the technical field of metallurgy. The rolling mill comprises a universal rolling rough rolling unit, a middle rolling unit and a universal rolling finish rolling unit which are sequentially arranged along a rolling line, a horizontal roller set of each unit is of an upper and lower roller reducing structure and is provided with an independent transmission system, and a gearbox and a transmission shaft are driven by an independent motor to achieve roller separation control. The middle rolling unit is a reducing edging mill, and temperature control units are arranged in front of and behind the rough rolling unit and the finish rolling unit respectively. The rolling method comprises the steps of adjusting the roller diameter ratio, synchronously adjusting the dip angle of the universal spindle and the basic height of the rolling mill, conducting gradient deformation rolling, dynamically adapting to a rolling model and the like. Through cooperation of independent transmission and reducing, accurate matching of the speeds of the upper roller and the lower roller is achieved, deformation uniformity is improved, the total motor power is reduced, an adjustable cooling nozzle and intelligent model optimization are combined, a product has the surface layer ultra-fine grain structure and core toughness, and the yield and market competitiveness are remarkably improved.

The invention aims to provide a device and process for preparing a fine-grain magnesium alloy plate through turning arc-shaped roller rolling, and belongs to the technical field of light metal plastic forming, and the device comprises a special-shaped roller, a flat roller and a motor; the special-shaped rollers comprise the upper special-shaped roller and the lower special-shaped roller, the lower special-shaped roller is horizontally arranged, and the included angle between the axis of the upper special-shaped roller and the axis of the lower special-shaped roller is 20-45 degrees. The two ends of the upper special-shaped roller and the two ends of the lower special-shaped roller are connected with an upper bevel gear and a lower bevel gear through roller shafts respectively, the upper bevel gear and the lower bevel gear located at the same end are meshed with each other, and the lower bevel gear located at one end is connected with a motor through a coupler. The flat roller is located behind the discharging end of the special-shaped roller, the included angle between the axis of the flat roller and the axis of the lower special-shaped roller which is horizontally placed is 0-45 degrees, and the fine-grain magnesium alloy plate with the weak basal texture is finally manufactured through the method. The problem that a traditional magnesium alloy plate is prone to forming a strong basal texture is solved, and the performance of the magnesium alloy plate is effectively improved.

The present invention belongs to the technical field of non-oriented silicon steel production and discloses a method for improving the cold-rolled edge quality of high-grade non-oriented silicon steel burr coils. The method comprises: cold rolling using a multi-stand continuous rolling mill or a single-stand reversible rolling mill for 5 to 7 rolling passes, controlling the flatness of the plate after the first, second, and final rolling passes to meet a specific formula; in addition, the rolling speed of the first pass, the emulsion flow rate of the first and second passes, and the original roughness of the mill work rolls can be further controlled. The present invention achieves the purpose of controlling rolled edge cracks and reducing edge waves by adopting a large edge wave rolling mode and adjusting the rolling speed, emulsion flow rate, and the original roughness of the work rolls, thereby achieving optimal cold-rolled edge quality of the burr coils and improving production efficiency and product yield.

The invention discloses a 0.01 mm-thick aluminum foil special for an anti-counterfeit label and a preparation method of the 0.01 mm-thick aluminum foil, and relates to the field of aluminum foil processing.The preparation method comprises the steps that a 0.24 mm-H14 aluminum foil blank is subjected to four-pass rolling and shearing, and a 0.01 mm-H18 aluminum foil is obtained; and carrying out gradient annealing on the aluminum foil finished product rolled in the fourth pass to obtain the 0.01 mm-0 state thickness aluminum foil special for the anti-counterfeit label. Wherein the process conditions of gradient annealing are as follows: heating: the temperature is increased to 185 DEG C from room temperature within 20 hours; primary heat preservation: preserving heat at 185 DEG C for 25 hours; cooling: reducing the temperature from 185 DEG C to 120 DEG C within 3 hours; and secondary heat preservation: preserving heat at 120 DEG C for 10 hours. The optimized 1235 alloy raw material is selected to prepare the blank, and the specific four-pass rolling process and the gradient annealing process are combined, so that the obtained aluminum foil is few in pinholes, flat in plate shape and smooth in surface and has the good mechanical properties that the tensile strength ranges from 75 MPA to 95 MPA, the transverse elongation is larger than or equal to 1.4%, and the longitudinal elongation is larger than or equal to 2.0%; and the performance requirements of the aluminum foil for preparing the anti-counterfeit label can be met.

The invention relates to a method for eliminating color difference type defects of a stainless steel cold-rolled sheet, which comprises the following steps of: controlling the finish rolling temperature in finish rolling of a plate blank and the coiling temperature after finish rolling, so that the thickness of an oxide layer on the surface of the plate blank is within 8-12 microns; in the cold rolling process, the roller roughness of a last roller is adjusted according to the color difference value of the plate blank so as to reduce the edge color difference and the center color difference of the plate blank; and the annealing process after cold rolling is controlled so that the thickness fluctuation of the Cr2O3 film can be smaller than or equal to 5%. By means of the method for eliminating the color difference defects, the color difference defect rate of the 304 stainless steel cold-rolled sheet is reduced to 0.4% from 2.8%, the overall color difference is smaller than or equal to 0.7, the corrosion resistance of a passive film is improved by 40% (salt spray test is larger than or equal to 96 h), and the international leading level is achieved; and the requirement of a high-quality surface is met.

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 relates to the technical field of metal rolling, and discloses aluminum alloy plate strip rolling machining equipment which comprises a workbench and further comprises a support fixedly connected to the lower portion of the workbench and used for supporting the whole equipment. The two fixing plates are mounted on the workbench and used for fixing the rolling mechanism and the guide mechanism; the rolling mechanism is arranged on the fixing plate and used for rolling the aluminum alloy plate strip. The guide mechanism is arranged on one side of the rolling mechanism and used for guiding the feeding angle when the aluminum alloy plate strip is rolled. By arranging the guide mechanism and utilizing the cooperation of the guide roller and the third spring, an aluminum alloy plate strip can be accurately guided to enter the rolling rollers, it is ensured that the feeding angle is accurate, meanwhile, the distance between the rolling rollers can be adjusted in real time according to the thickness of the plate strip through the dynamic adjusting function of the arc-shaped connecting rod and the first spring, and the production efficiency is improved. And the stability of the rolling process is guaranteed, so that the rolling quality is improved, and the rejection rate caused by uneven thickness is reduced.

The invention relates to a continuous casting-continuous extrusion short-process forming process for a large-width copper plate strip, and belongs to the technical field of metal processing. The method comprises the following steps: preheating and drying high-purity cathode copper, melting in a smelting device, covering the surface of molten copper with charcoal and graphite flakes, carrying out on-line degassing, deoxidizing and stirring, upwards leading a copper rod by adopting a traction unit, and extruding between an extrusion wheel and a compaction wheel; a four-high rolling mill is used for rolling; cleaning and passivating the annealed copper plate strip, spraying a lanthanum (III)-containing silane-benzimidazole lubricant solution on the surface of the copper plate strip, and drying; slitting to obtain a large-width copper plate strip; the lanthanum (III)-silane-benzimidazole lubricant is prepared from vinyltriethoxysilane, deionized water, ethanol, benzimidazole and lanthanum nitrate hexahydrate (III), and the lanthanum (III)-silane-benzimidazole lubricant is prepared from the vinyltriethoxysilane, the deionized water, the ethanol, the benzimidazole and the lanthanum nitrate hexahydrate (III); the prepared copper plate strip is high in purity, low in oxygen content, high in conductivity and excellent in mechanical property, and the technical requirements of the high-end field for the high-purity high-conductivity oxygen-free copper plate strip are met.

This disclosure relates to a rolling mill, specifically a cold rolling mill, comprising: - cylinders or sets of rollers including at least one pair of working cylinders capable of defining the air gap of a strip to be rolled, - at least one spray bar (3a, 3b) for spraying a lubricating and / or cooling fluid, located near the plane of the strip to be rolled, - a stand (2) within which said cylinders are arranged, - at least one device for adjusting the inclination of said at least one spray bar including an actuator, such as a hydraulic cylinder configured to change the inclination of the spray bar about the pivot axis. According to this disclosure, said actuator of the inclination adjustment device is arranged on the second side (C2) of the stand, opposite the first side (C1) of the maintenance window.

Before a rolling pass (i), characterized by a parameter set (Λi), of a strip (100) in a roll stand (10), a minimum and maximum temperature (Tmin, Tmax) and a minimum and maximum coefficient of friction (µmin, µmax) are predefined and, from a setup model (200), limit values (Emin, Emax) for an emulsion actuator (21,..., 23') and setup values for the emulsion actuator (21,..., 23'), for a cooling actuator (41,..., 42') and for a lubricating actuator (31,..., 32') are predefined. During the rolling pass (i), the actuators are set to the setup values. An actual strip temperature (T') is identified by a temperature measuring device (51, 52), and an actual coefficient of friction (µ') is identified from measured manipulated-variable actual values (M'). These are taken as a basis to identify improved setup values either only for the cooling actuator (41,..., 42') and / or the lubricating actuator (31,..., 32'), or, if a change in the applied coolant rate or lubricant rate behaves synergistically with respect to the emulsion rate, additionally also for the emulsion actuator (21,..., 23'). The improved setup values are transferred from the setup model (200) to the parameter set (Λi).

A processing roller for a rolling mill for thinning a sheet of an alkali metal or its alloy into a film is disclosed. The processing roller has a cylindrical central portion defining a central axis and having an outer surface defining a thinning surface, and first and second frusto-conical portions extending from first and second ends of the central portion. When the central axis is straight, the angle between the outer surface of the central portion and the outer surfaces of each of the first and second frusto-conical portions is less than 0.05 degrees. The width of the central portion is greater than the width of each of the first and second frusto-conical portions. The width of the central portion is less than the sum of the widths of the first and second portions. A rolling mill having two such processing rollers is also disclosed.

A rolling cassette (10) for rolling a metal wire (100) comprises a body (11) equipped with a structural frame (12) and defining a cavity inside it to house a plurality of rolling rolls cooperating with each other to deform the metal wire (100). The rolling cassette (10) comprises a lubrication system to lubricate both the metal wire (100) and also the mechanical members on which the rolling rolls are mounted with a lubricating agent.

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 belongs to the technical field of non-ferrous metal processing, and relates to a production method of 4.5 [mu] m ultrathin battery aluminum foil, which comprises the following steps: adopting a 1235D alloy blank, and carrying out five-pass rolling (final-pass double rolling + 50% reduction rate) and tempering at 120 DEG C for 15 hours at a 9 [mu] m stage; the rolling oil contains mao19 base oil, 6%-8% of MARK625HB and 1%-3% of MARK625W3; and roller convexity / roughness hierarchical control is carried out. The tensile strength of the prepared aluminum foil is larger than or equal to 180 MPa, pinholes are smaller than or equal to 1000 / m < 2 >, and the wetting tension is larger than or equal to 32 dyn. According to the invention, the prepared 4.5 [mu] m ultrathin battery aluminum foil is compounded with a high polymer material to form a composite current collector with an aluminum foil-high polymer material-aluminum foil structure. According to the method, the rolling limit is broken through, and mass production of the ultra-strong and ultra-thin 4.5-micron battery aluminum foil is achieved through five-pass and double rolling; the performance reaches the standard, annealing-free compounding is achieved, and a surface oil film directly meets the PE / PET thermal compounding requirement; and safety verification: the anti-puncture qualified rate after compounding is 100%. The problems that the ultrathin aluminum foil is broken during rolling, pin holes exceed the standard and annealing is needed before compositing are solved.

The present application relates to a kind of rolling method of optimizing the edge drop of non-oriented silicon steel, using 5 machine frame continuous rolling rolling, meet the quality requirement that edge drop index is lower than 5um, the width range of inlet strip steel is in 1020~1300mm, the thickness range of inlet is in 2.2~2.8mm, the thickness range of outlet is in 0.45~0.55mm strip steel process system includes rolling load distribution relationship, tension setting, rolling force setting, 5 machine frame continuous rolling mill bending roll system, 5 machine frame continuous rolling mill roll roll system roll process parameters and rolling lubrication condition, from work roll roll, work roll bending, intermediate roll bending, rolling load distribution, tension, roll gap etc., formulate process system, realize non-oriented silicon steel in high speed stable rolling, realize non-oriented silicon steel in high speed stable rolling, meet the quality requirement that edge drop index is lower than 5um at the same time, under the premise of meeting the quality requirement, improve the economic benefit of production line.

A rolling system for a metal substrate includes a workstand having an entry side and an exit side. A hot oil spray header is provided at the entry side for applying a hot oil on a surface of a work roll of the workstand and to approximately 50% or more of a width of the work roll. The rolling system also includes at least one of a coolant spray header or a lubrication spray header. The coolant spray header may be provided at an exit side of the workstand for applying a coolant on the surface of the work roll. The lubrication spray header may be provided at the entry side of the workstand for applying a lubrication oil on the surface of the work roll and at least partially into a roll gap of the at least one workstand.

The stable aluminum foil rolling mill comprises a base, supporting legs are fixedly installed at the four corners of the top of the base, a stable aluminum foil rolling mill body is fixedly installed at the tops of the supporting legs, and a hydraulic cylinder is fixedly connected to the top of the stable aluminum foil rolling mill body; in the application period of the device, in the aspect of the smearing effect, a third motor drives a bidirectional lead screw to assist in driving a concave base to drive a roller brush to move transversely, and at the moment, a roller brush set is driven to move transversely under the cooperation of an adjusting assembly and a driving structure of the roller brush set. Different from a traditional trowelling plate rotary smearing mode, the brush roller can stably brush the outer surface of the aluminum foil left and right, a smearing gap is eliminated, it is ensured that rolling oil evenly covers the surface of the aluminum plate strip coil, aluminum foil scratching caused by uneven smearing is avoided, and the quality and production stability of aluminum foil products are greatly improved.

The present invention relates to a control method for on-site instrument failures in a hot-rolled dry oil system, belonging to the technical field of hot continuous rolling sheet production methods. The technical solution of the present invention is as follows: a limit value is set for the switching value of the pump station pressure switch SP2, and the first-level programmable controller collects the two switching values of the pump station pressure switch. When the pump station pressure is greater than the set value, the newly added control point first controls the pipeline to supply oil in the reverse direction. When the output value of the SP2 switching quantity is higher than the limit value within the set time, the pump station motor automatically stops oil transportation. The beneficial effects of the present invention are as follows: it improves the stability of the operation of the automatic control system, avoids the occurrence of production stoppage accidents, and at the same time reduces the medium consumption of the production line; there is no need for manual intervention, and the system processes faults more quickly and reliably.

The invention discloses a method and equipment for reducing rolling edge cracks of common oriented silicon steel, and belongs to the technical field of steel production, and the method comprises the following steps: after being discharged from a pickling line, a plate enters a tunnel type preheating furnace 1 to be preheated, and the temperature of the plate is increased to 65-75 DEG C; the plate enters a rolling mill after being preheated, the flow rate of the emulsion in the first pass is 3500 L / min-6000 L / min, the flow rate of the emulsion in the second pass is 4500 L / min-7200 L / min, and the flow rate of the emulsion in the third pass is 7000 L / min-8000 L / min. The plate can enter the tunnel type preheating furnace before entering the rolling mill for rolling, and acid pickling waste heat is effectively kept warm. The rolling temperature of the plate in each pass is controlled to be higher than 60 DEG C by reducing the flow of the emulsion in the first two passes, and edge cracking caused by the cold brittleness characteristic in the plate rolling process is avoided.

The invention discloses a method for cutting a metal plate with oil, which belongs to the field of plate processing, and comprises the following steps of: uncoiling a coiled material, balancing an oil film, detecting the thickness of the oil film, adjusting a balancing roller, determining cutting parameters, dynamically adjusting and supplementing oil, adjusting the pressure of the balancing roller according to the thickness of the oil film detected in real time, and when the pressure of the balancing roller reaches a proper value, adjusting the pressure of the balancing roller. Then cutting parameters are determined according to the oil film thickness detected in real time, single finished products are formed through cutting, finally, oil is supplemented to the single finished products, and through the design, the influence of uneven oil film thickness on metal plate machining is reduced.

The invention discloses an oil-gas mixing efficient lubrication continuous rolling method. The method comprises the steps that 1, system parameters are initialized, and rolling process parameters, oil-gas mixing proportion parameters and control system parameters are set; step 2, performing real-time acquisition of multi-source data; step 3, carrying out process parameter self-learning; 4, abnormal working condition judgment is carried out; 5, executing a corresponding control strategy according to a judgment result; and 6, returning to the step 2, and continuing the next cycle. Through real-time collection of multi-source data, construction of a process parameter self-learning model, intelligent judgment of abnormal working conditions and execution of a dynamic control strategy, precise regulation and control of oil-gas mixed lubrication parameters are achieved, and the problems that in the prior art, oil consumption is high, parameter adjustment is tedious, and adaptability to the abnormal working conditions is poor are effectively solved; and the lubricating effect is improved, the system energy consumption is reduced, and the working condition adaptability is enhanced.

The invention provides an additive, a water-based copper rolling emulsion containing the additive and application of the water-based copper rolling emulsion. The water-oil balance agent is prepared from 2, 2 '-[[(methyl-1H-benzotriazole-1-yl) methyl] imino] diethanol, an R group is an EO or EO-PO-EO block polymer, water-oil balance is achieved by adjusting the HLB value, and meanwhile the molecular weight and the number of the R group have important influences on wetting, cleaning and stability of rolling emulsion. The additive is added into the rolling emulsion, so that the rolling emulsion shows the properties of wetting, dispersing, emulsifying, metal deactivating, oxidation resisting, lubricating and the like, has high detergency and long service life, and can keep the emulsion stable for a long time.

The invention relates to the field of copper pipe production, and discloses a copper pipe three-roller planetary rotary rolling flexible water cooling system and a cooling method.The cooling method comprises three cooling sections, specifically, the first cooling section is used for roller cooling, and an aerial fog cooling mode is adopted; in the secondary cooling section, the air-fog cooling mode is adopted for cooling the rolled copper pipe, it is ensured that air and fog are fully mixed, and the temperature cooling rate of the copper pipe is controllable and adjustable; in the third cooling section, a traditional pure water cooling mode is adopted, the cooling strength is guaranteed, the copper pipe can be cooled to the standard temperature when the second cooling section is not opened, and a 35-degree included angle is formed between a nozzle and the water cooling device in the axial direction; and the cooling device channel, the nitrogen pipeline and the cooling water pipeline are fixed together through flange plates. The flexible cooling device has the advantages that the flexible cooling device is adopted, the annular nozzle arrangement scheme is adopted, the multiple annular cooling units capable of being independently controlled are arranged in the moving direction of the copper pipe, and selection of three cooling modes of water, aerial fog and nitrogen is achieved. The cooling rate can be adjusted in a large range, the cooling uniformity is good, and the control precision is high.

The invention belongs to the technical field of steel production management, and provides a method for reducing oil sludge in a rolling mill stand, which comprises the following steps: determining allowable flow ranges of strip steel at different thicknesses and rolling speeds, and constructing an allowable flow range reference library; analyzing the iron powder concentration change of a filter port of the filter system of the rolling machine under different emulsion flows, and determining the allowable maximum emulsion flow; according to the thickness of the strip steel section and the rolling speed, the allowable flow range corresponding to the strip steel section is extracted from the allowable flow range reference library, and is compared with the allowable maximum emulsion flow to judge whether the emulsion flow adjustment during strip steel section rolling is needed or not; if yes, determining an emulsion flow adjusting mode during rolling of the strip steel section, and if the flow value is limited and adjusted, determining a flow analysis range, and limiting an emulsion adjusting flow value of the strip steel section according to strip steel quality data and iron powder concentration corresponding to different emulsion flows, so as to reduce generation of oil sludge.

The application discloses a rolling mill automatic cleaning and water supplementing system, which comprises a deionized water tank for storing deionized water; a main pipeline connected with the deionized water tank; a first branch pipeline connected with the main pipeline and a first nozzle arranged above a front hood of a rolling mill, wherein the first nozzle is provided with a first valve and is used for cleaning an area where the front hood of the rolling mill is located; a second branch pipeline connected with the main pipeline and a second nozzle arranged above a rear hood of the rolling mill, wherein the second nozzle is provided with a second valve and is used for cleaning an area where the rear hood of the rolling mill is located; and a controller connected with the first valve, the second valve and a historical water supplementing data storage, wherein the controller is used for cleaning the inside of the rolling mill and supplementing deionized water for emulsified liquid according to historical water supplementing data stored in the historical water supplementing data storage, so that the cleanliness of the inside of the rolling mill and the stability of the emulsified liquid are improved.

A cold rolling mill rolling condition setting method using a prediction model being generated with an explanatory variable being first multi-dimensional data obtained by transforming past rolling performance data including pre-cold rolling data of a roll material on an entry side of the cold rolling mill into multi-dimensional data, and an objective variable being post-cold rolling data of the roll material on a delivery side of the cold rolling mill, the method includes: estimating a post-rolling shape of a roll target material by inputting, to the prediction model, second multi-dimensional data generated from information including the pre-cold rolling data of the roll target material on the entry side of the cold rolling mill and a target rolling condition of the cold rolling mill; and changing the target rolling condition of the cold rolling mill such that the estimated post-rolling shape of the roll target material satisfies a predetermined condition.

The invention provides rolling oil for increasing the dyne value of the surface of a battery foil and a using method thereof.The aluminum foil for a battery is subjected to secondary rolling, the secondary rolling sequentially comprises rough rolling and finish rolling, the rolling oil is prepared from base oil, alcohol, ester and dyne liquid, and the dyne liquid comprises formamide, glycol ether and modified polyacrylamide; the modified polyacrylamide is polyacrylamide modified by 2-acrylamide-2-methylpropanesulfonic acid (2-acrylamide-2-methylpropanesulfonic acid). Through a secondary rolling method and reasonable addition of a proper additive, the dyne value of the surface of the battery foil is improved, the wetting tension of the surface of the battery foil is improved, the surface performance of the battery is further improved, and the method has a wide application prospect.

The application belongs to the technical field of cold upsetting steel wire drawing, and particularly relates to a wire drawing device for preventing cold upsetting steel wire from being broken, which comprises a calender assembly, a spiral steel wire is sleeved and installed on the calender assembly, the calender assembly is provided with a main frame, a middle roller is rotatably installed on the left side of the main frame, a lower pressing part is installed on the top end of the main frame and located at the right upper part of the middle roller, and the lower pressing part is provided with a hydraulic cylinder. The middle roller and the auxiliary roller are combined in an up-down mode, the steel wire is arranged in a spiral mode on the outside of the middle roller, the middle roller and the auxiliary roller are oppositely clamped in an up-down mode, a pressing force is applied to the middle roller and the auxiliary roller by the hydraulic cylinder, the steel wire can be squeezed and passed through when the middle roller rotates, automatic feeding and calendering are realized, the size of the auxiliary roller can be gradually increased, the auxiliary roller is provided with a plurality of auxiliary rollers, segmented continuous calendering is realized, and the steel wire is prevented from being broken.

The application relates to a cold rolling method of an unoriented silicon steel, and a cold rolling method of an ultra-high-grade unoriented silicon steel, which comprises the following steps: step one: first rolling process: a first cold rolling production method of a steel coil; and step two: second rolling process: a second cold rolling production method of the steel coil after first annealing. In the first rolling process, a small reduction of 26-30% is adopted in the first pass, and a micro-edge wave control standard is adopted at the edge, so that the generation of edge crack defects is reduced or avoided.