1123results about "Rolls" patented technology

The invention provides rolling equipment, a current collector, a preparation method of the current collector, a pole piece, a battery and a device. A rolling device comprises a roller mechanism, a flow control mechanism and a power mechanism. The roller mechanism comprises at least two opposite rollers arranged at intervals and a flow control mechanism. The flow control mechanism is used for independently controlling the flow of the cooling medium in each cooling channel; the power mechanism is used for driving at least one roller to rotate. According to the rolling equipment, the roller diameter of the roller can be simply, effectively and flexibly adjusted by controlling the flow, so that the thickness of a rolled membrane material is adjusted, for example, a current collector with a large thickness in a tab area is prepared, the current collector is used for preparing an electrode pole piece, the problem of belt breakage in mass production of the electrode pole piece can be solved, and the production efficiency of the electrode pole piece is improved. And the yield of electrode plate production is improved.

An electrically-assisted tooth-shaped rolling process and device for preparing a gradient ultrafine-grained sheet is provided. A rib-forming pressure roller, a rib-flatting pressure roller and a straightening pressure roller are adopted to sequentially roll relative to a surface of a sheet under a preset pressing force. The surface of the sheet is driven, under a rib forming process, to generate large deformation in micro-area to crush and refine grains, and under a rib flatting process to generate reverse large deformation in micro-area. Large deformation areas in the rib forming process and the rib flatting process are staggered to further crush and refine the grains. A cold straightening process drives the sheet to be restored to an original shape, so that the sheet becomes the gradient ultrafine-grained sheet with a decreasing grain size gradient from an interior to a surface layer.

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

The invention belongs to the technical field of special alloy hot rolling, and particularly relates to a refined subsection cooling method and device for a titanium plate hot mill roller. Comprising the steps that S1, a temperature field distribution function of a roller during rolling and a temperature field distribution function of the surface of the roller during cooling are obtained; s2, a heat exchange coefficient distribution function of the heat exchange coefficient required by the roller in the axial direction of the roller is obtained; s3, a distribution function of the cooling water flow in the axial direction of the roller is obtained; s4, according to the distribution function of the cooling water flow in the axial direction of the roller, the roller is divided into a plurality of cooling sections in the axial direction of the roller, and different cooling sections correspond to different cooling water flow difference threshold values; and S5, a non-contact temperature sensor is arranged at the center position of each cooling section, an independent roller cooling mechanism is configured for each cooling section, and the flow of cooling water is adjusted. Independent cooling control over different cooling sections of the roller is achieved, and the plate shape quality of a titanium plate is improved.

The invention relates to a foil rolling device and method, a current collector, a pole piece forming method, a battery production system and a power utilization device.In the rolling process, a rolling mechanism is used for rolling a foil to the needed thickness, and then a rolling mechanism is used for rolling a first blank area of the foil in the tape conveying direction; and the first blank area has extension deformation in the tape conveying direction. The first blank area of the foil corresponds to the tab area of the pole piece, so that the tab area of the pole piece is equivalently extended in advance and has extension deformation quantity in advance during cold press molding of the pole piece, and the probability of wrinkling of a coating area due to excessive extension can be reduced. Besides, the calendaring of the tab area is advanced to the rolling process, and the calendaring mechanism is arranged at the downstream end of the rolling mechanism, so that heat generated in the rolling process can be fully utilized in the calendaring process, and the first blank area of the foil is easy to extend.

The invention relates to the technical field of high-temperature alloy materials, and provides an N10276 profiled bar and a forming method thereof.The surface of a blank is coated with a three-layer composite sheath, the blank is heated in a partitioned and gradient mode, the temperature of a side wing plate area is 50-100 DEG C higher than that of a web plate area, the metal fluidity of a side wing plate is improved, cogging rolling, four-roller reciprocating finish rolling, partitioned and gradient cooling and secondary solution treatment are conducted, and the N10276 profiled bar is obtained. A nitric acid and hydrofluoric acid mixed solution is used for pickling and stripping the composite sheath, an oxide layer is removed, intergranular corrosion is avoided, a triple sheath synergistic protection mechanism is adopted, oxygen is physically isolated by outer stainless steel, and heat loss is inhibited by a middle yttria-stabilized zirconia ceramic fiber layer.

Generally described, one or more aspects of the present disclosure relate to methods, systems, and devices related to pre-straining bare lanes of a multilane electrode with a system for calendering a multilane electrode including a pre-strain roll device including a plurality of pre-strain rollers and a pressure roller forming a pre-strain nib and a calender roll device comprising a pair of calendering rollers forming a calendering nip positioned downstream from the pre-strain roll device.

The utility model discloses a rolling thermal expansion and cold contraction device which comprises a pair of roller sets, a thickness gauge, a plurality of temperature sensors and a temperature regulation and control assembly, the roller sets are provided with a plurality of temperature control flow channels, one temperature sensor is correspondingly arranged in one temperature control flow channel, the thickness gauge is used for detecting the thickness of a pole piece, and the temperature regulation and control assembly is used for regulating and controlling the temperature of the pole piece. The thickness gauge and the temperature sensor are respectively connected with the temperature regulation and control assembly, and the temperature regulation and control assembly is connected with the temperature control flow channel. The temperature regulation and control assembly adjusts the temperature of liquid input into the temperature control flow channel according to data detected by the temperature sensor and the thickness gauge so as to enable the deformation position of the roller set to expand with heat and contract with cold. According to the rolling thermal expansion and cold contraction device, liquid is conveyed to the deformation part of the upper roller or the lower roller, so that the deformation part of the upper roller or the lower roller is subjected to thermal expansion and cold contraction, the size of the roller group is controlled, and an electrode plate meeting the process requirement is rolled.

The invention relates to the technical field of high-speed cable shielding materials, and discloses a manufacturing method of rolled copper foil for high-speed cable shielding. The method comprises the following steps: preparing a copper plate; performing multi-pass cold rolling on the copper plate to form an elongated grain structure oriented along the rolling direction; performing controlled annealing on the cold-rolled copper foil to recover plasticity and inhibit complete recrystallization; the target thickness is obtained through finish rolling; carrying out finishing rolling on at least one surface of the copper foil by adopting a mirror surface working roller so as to reduce the surface roughness; and performing surface smoothing or passivating treatment to inhibit oxidation and performance degradation. Therefore, the obtained rolled copper foil has good ductility, structural stability and high-frequency performance.

To provide a stand that enables both of a position in a rolling machine and a configuration for adjustment to be selected more flexibly at the same time with designing for downsizing the rolling machine.SOLUTION: A stand 1 rolls a metal rod, a wire, and a pipe along a rolling shaft. The stand includes: a stand housing 10 whose outside includes at least six side surfaces 14.1-14.6 having equal lengths which are arranged rotationally symmetrically with the rolling shaft as a center, when viewed along the rolling shaft, where the two side surfaces respectively form a pair of side surfaces arranged in parallel to each other; and three rollers 20.1-20.3 each arranged on one roller shaft, and surrounding the rolling shaft in a star shape to jointly form a caliber 21. The three rollers are loaded by an eccentric bushing, in a bearing hole of the stand housing, by a method in which an interval in a radial direction of the rollers from the rolling shaft can be adjusted.SELECTED DRAWING: Figure 1A

The utility model relates to a smooth copper shell cold roll, which comprises an inner core component and a copper shell component coaxially connected outside the inner core component, a liquid inlet channel and a liquid outlet channel are respectively arranged at two ends of the inner core component, and an annular cavity is arranged in the copper shell component. The liquid inlet channel, the annular cavity and the liquid outlet channel are sequentially communicated and form a one-way cooling flow channel; an impeller rotating along with the liquid inlet channel is installed in the liquid inlet channel and used for driving cooling liquid to flow in the one-way cooling flow channel. Through the design of linkage of the impeller and the roller body, the cooling liquid is driven to flow by using the rotation power of the roller, an external pumping device is not needed, active cooling with zero extra energy consumption is realized, and the energy-saving benefit is remarkable; a spiral flow guide path is matched, so that the heat conduction efficiency and the cooling liquid contact area are greatly improved, and thermal deformation is effectively prevented.

The present application relates to copper plate strip processing technical field, provide a kind of advanced copper plate strip continuous rolling process, including S1.selecting the copper ingot of copper content above 99.9%, after sawing and surface polishing to obtain raw material;S2.copper ingot is heated in heating furnace, ensure the uniformity of copper ingot internal temperature;S3.using roughing mill to the copper ingot after heating is rolled through 2-3 passes roughing;S4.copper plate strip after roughing enters medium rolling mill, and medium rolling pass is 3-5 times;S5.copper plate strip after medium rolling enters finishing mill, and finishing pass is 3-4 times;S6.on-line cooling: copper plate strip after finishing immediately enters on-line cooling system.By early accurate sawing and polishing treatment, the initial quality of copper plate strip is guaranteed, the smooth progress of subsequent rolling process is ensured, the multi-pass continuous rolling process of roughing, medium rolling and finishing is combined with on-line cooling, through strict parameter control, not only improve production efficiency, but also effectively reduce energy consumption, reduce production cost.

The invention discloses thickness-variable metal belt rolling equipment and a thickness-variable metal belt rolling method, and belongs to the technical field of metal rolling, the thickness-variable metal belt rolling equipment comprises a rack and further comprises roller quick cutting mechanisms, a thickness quick adjusting mechanism and a metal belt supporting mechanism, and the two roller quick cutting mechanisms which are vertically stacked are distributed on the upper side of the rack; a roller fast cutting mechanism with the lower side conducting self-locking and fast switching on rollers is installed on the upper side of the rack, the thickness fast adjusting mechanism is installed on the rack, and metal belt supporting mechanisms for conducting supporting feeding and supporting discharging on metal belts are installed on the front side and the rear side of the rack correspondingly. The roller quick-cutting mechanism comprises a roller quick-switching mechanism and a roller locking mechanism, and the roller quick-switching mechanism for quickly switching the rollers is mounted on the upper side of the rack. In this way, the rollers made of different materials can be rapidly switched for rolling, and the rolling thickness can be rapidly adjusted.

The utility model discloses a thickness-variable metal tabletting device which comprises a connecting plate, a supporting frame is arranged on the outer side of the connecting plate, a driving motor is fixedly installed on the outer side of the supporting frame, tabletting rollers are fixedly installed at the output end of the driving motor, and two groups of tabletting rollers are arranged in a bilateral symmetry mode relative to the midpoint of the connecting plate; the adjusting assembly is mounted on the outer side of the connecting plate; the lubricating assembly is installed at the upper end of the supporting frame. According to the thickness-variable metal tabletting device, when a gap between rollers needs to be adjusted, the output end of a servo motor drives a different-direction threaded rod to rotate by operating the servo motor, and the different-direction threaded rod rotates to drive threaded connectors at the two ends to move in the opposite direction or in the reverse direction; the two sets of threaded connectors move oppositely or reversely to drive the tabletting rollers at the two ends to move along with the two sets of threaded connectors, the gap between the tabletting rollers at the two ends is adjusted, and therefore the metal tabletting thickness is adjusted.

The invention relates to a control method for improving EDT roller texturing efficiency and high-surface automobile aluminum plate oil storage amount. The control method comprises the steps that (1) a single-rack cold rolling mill is adopted; (2) carrying out roller surface treatment by adopting an electrode electric spark roller grinder, wherein the roughness Ra of a working roller before roughening is less than or equal to 0.4 mu m; the roughness Ra after EDT roughening is equal to 1.95 to 2.2 [mu] m; (3) a single-rack cold rolling mill is adopted for production, the rolling oil temperature is 35 + / -5 DEG C, and the rolling oil pressure is 6.0-9.0 bar; (4) an air cushion type continuous annealing line is adopted for cleaning and solid solution aging treatment; (5) carrying out surface appearance and pit size measurement on the prepared aluminum plate by adopting a 3D optical microscope; and (6) the manufactured aluminum plate is measured through a 3D non-contact optical contourgraph. By means of the method, the requirements for the surface roughness Ra and Rpc of the automobile sheet can be met, the downstream stamping cracking risk and the corrosion spot defect caused by the too large surface pit diameter are reduced, the better high-surface automobile sheet, the higher aluminum sheet surface oil storage amount and the lower friction coefficient can be obtained, and the EDT roller texturing working time can be saved.

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 utility model relates to a battery pole piece hot roller, and belongs to the technical field of battery production, the battery pole piece hot roller comprises a roller shaft, a roller sleeve, a first cover body, a second cover body, n flow channels, a first rotating shaft, a second rotating shaft and a filter cone, a first gap is formed between the roller sleeve and the roller shaft, and a second gap is formed between the first cover body and the roller shaft, a third gap is formed between the second cover body and the roller shaft, the n flow channels are separated from one another, the parts, located in the first gap, of the flow channels are spiral, and a filter cone is arranged in the liquid inlet channel of the first rotating shaft. According to the battery pole piece hot roller, it can be guaranteed that fluid media make full and uniform contact with the roller shaft and the roller sleeve, the temperature difference of the surface of the roller sleeve is reduced, impurities existing in the fluid media can be prevented from entering a flow to block a flow channel, and normal circulation of the fluid media is guaranteed.

The utility model relates to a sizing horizontal roller frame which comprises a machine frame and two rollers. The two horizontally-arranged rollers are connected with lifting pieces used for driving the rollers to move in the height direction of the rack, the two lifting pieces work to adjust the distance between the rollers, and steel pipes of different specifications penetrate through the circular channels of different diameters to be pressed. Steel pipes of different specifications are arranged in the circular channels of different diameters in a penetrating mode to be pressed, and each circular channel is designed for the steel pipe of the specific specification, so that it is guaranteed that the steel pipe can obtain the accurate size and shape in the pressing process. In addition, the semicircular grooves of the two rollers form a plurality of circular channels which have different diameters and are used for the steel pipes to pass through along the axial direction of the semicircular grooves, so that the structure can flexibly meet the production requirements of the steel pipes with different specifications.

The invention belongs to the technical field of rolling, and discloses a Ni / Al nano multilayer film electroplasticity and current-assisted ply rolling forming method. The Ni / Al multilayer film is an energetic material and is used as a brazing heat source and a welding flux. According to the method, millimeter-level Ni foil and Al foil serve as raw materials, the thickness ratio of all layers is determined according to the maximum self-propagating heat release amount, a six-roller precision rolling mill is used for conducting multi-pass electroplastic ply rolling under pulse current, the pass deformation is 60%, and electric pulse annealing is conducted after rolling (the temperature is lower than a reaction critical value), and the Ni / Al nanometer multilayer brazing thin film with the total thickness being 50 micrometers and composed of thousands of layers of nanometer thin films is prepared. The method overcomes the problems of low production efficiency, high cost, narrow application range and the like in the prior art, and compared with a magnetron sputtering method, the method is low in manufacturing cost, short in period, large in area and good in mechanical property; compared with an accumulative ply rolling technology, interface recombination is excellent, nickel layer breakage is light, and heat release is high; and the material is low in deformation resistance and good in plasticity, multi-layer film ply rolling forming property integrated forming is achieved, and industrial application is facilitated.

The present invention provides a high-strength steel sheet having excellent hydrogen embrittlement resistance after spot welding, due to a novel configuration. The steel sheet of the present invention has a tensile strength of 1470 MPa or more, and the aspect ratio Str of the roughness of at least one surface is 0.

The invention relates to a hot-dip coated, skin-pass rolled steel sheet.

Support system for storing rolling mill rolls, comprising: - a support frame (Cha) comprising a first support (Cha1) and a second support (Cha2), the first and second supports being fastened to the ground in parallel, - a pair of independent non-movable roll stands (Bc), each pair comprising a first roll stand and a second roll stand, the first and second roll stands being spaced apart by a certain distance, rigidly connected to the first support (Cha1) and the second support (Cha2) respectively, in order to support the rolls transversely on the support frame in different support positions, - a handling system configured to release and lift a roll located in one of the support positions of the pair of non-movable roll stands by lifting one or more movable roll stands using lifting means, to displace the movable frame (SMCH) and to place the roll in another support position of a non-movable roll stand displaced along the length of the support frame (Cha) by lowering of the lifting means.

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 provides a continuous rolling hole pattern system for rolling square billets into round bars, which comprises six hole patterns, namely four square hole patterns, one elliptical hole pattern and one round hole pattern in sequence, the groove bottom of the third square hole pattern is an arc, and the groove bottom of the fourth square hole pattern is an arc. According to the pass system, flat-bottom grooves of the third frame of square pass and the fourth frame of square pass are changed into protruding arc-shaped groove bottoms, the rolling reduction of the center area of a square billet is increased, the phenomenon that a rolled piece is twisted in the rolling process due to factors such as incoming material size fluctuation and rolling mill stand jumping is avoided, and the rolling stability is improved.

The application discloses a method for controlling damage of a high-speed rod product rack roller ring, and relates to the technical field of rod rolling processes, which comprises the following steps: obtaining working parameters of finishing mills in each production stage in a high-speed rod rolling production line; extracting the working parameters of the finishing mills in the finishing stage; and adjusting the working parameters of the finishing mills in the finishing stage to control the damage frequency of the roller ring of the finishing product rack. Through the method, the tension between the rolling pieces in the finishing mill is controlled, the head biting impact of the rolling pieces is controlled, the upper pressing method is adopted for the finishing product rack, and the roller ring cooling water is improved, so that the stability of the steel biting and the cooling effect of the roller ring are controlled, the production accidents caused by the damage of the roller ring of the finishing product rack are reduced, and stable production is realized.

Disclosed is an electrode sheet calender roll including a hard layer formed by physical vapor deposition and a manufacturing method thereof. The manufacturing method of the electrode sheet calender roll according to one embodiment of the present invention is characterized by including: a hard layer forming step of forming a hard layer on a roll core composed of a steel material containing carbon by a PVD method; and a hard layer forming step of polishing the hard layer so that the thickness of the hard layer is different between a center portion and end portions of the calender roll.

The application provides a cold rolling method for reducing surface cracks of TC4 titanium alloy seamless pipes, relates to a cold rolling pipe manufacturing technology in the metallurgical and mechanical industries, and comprises the following steps: adopting a two-roller cold rolling machine to roll a blank with a specification of Ф76*7.5mm into a finished product with a specification of Ф25*3mm. When rolling, the left and right openings of the groove are designed to be asymmetric, Fx1 and Fx4 are constant, the sizes of Fx2 and Fx3 are 0.1mm larger than those of Fx1 and Fx4, and the sizes are used to accommodate part of the long axis of the cross-section ellipse of the seamless pipe; meanwhile, the opening angle is constant, and the opening angle Fw2 is 5° larger than Fw1. Through optimization of the deformation tools such as the mandrel and the roller groove, reasonable adjustment of the feed amount and the rotation angle, the occurrence of the effective inner and outer surface cracks is effectively reduced. According to the characteristics and technical requirements of different TC4 titanium alloy seamless pipes, the cold rolling pipe manufacturing process is organized and implemented, the surface defect loss of the titanium alloy pipe is reduced, the surface rolling quality is continuously and stably improved, and the energy saving, emission reduction and consumption reduction effects are remarkable.

A splash-proof mechanism of an upper working roller for aluminum coil cold rolling comprises the upper working roller rotationally supported on a cold rolling rack, the two ends of the upper working roller are cone sections, the small-diameter ends of the cone sections face the cold rolling rack, two connecting plates extending in an arc shape are fixedly arranged on the cold rolling rack and correspond to the two ends of the upper working roller respectively, and the two ends of the upper working roller are connected with the cone sections. An oil baffle is fixedly arranged on each connecting plate and is bent in an arc shape, the circle where the oil baffle is located is concentric with the circle where the upper working roller is located, one side of the oil baffle bent in the arc shape is flush with the inner wall of the corresponding side of the cold rolling rack, and the other side of the oil baffle bent in the arc shape extends to the large-diameter end of the cone section at the corresponding end of the upper working roller; the starting end of the oil baffle is located on the discharging side of the upper working roller and corresponds to the bottom of the upper working roller, and the stopping end of the oil baffle extends in the rotating direction of the upper working roller and corresponds to the top of the upper working roller. The cold rolling oil recycling device is simple in structure, low in modification cost, capable of effectively preventing cold rolling oil from splashing out of cold rolling equipment, beneficial to cold rolling oil recycling and capable of avoiding pollution.

The present invention provides a hot-rolling roll outer layer material that suppresses variations in the amount of crystallized carbides along the length direction and exhibits excellent wear resistance over its entire length, a centrifugal casting die for casting the hot-rolling roll outer layer material, a method for manufacturing the hot-rolling roll outer layer material, and a hot-rolling composite roll. [Solution] Contains C: 1.2~2.6%, Si: 0.1~2.2%, Mn: 0.1~2.2%, Ni: 0.4~5.5%, Cr: 2.0~10.5%, Mo: 2.0~12.0%, V: 2.0~9.5%, W: 0.5~8.5%, P: 0.01~0.06%, S: 0.001~0.060%, with the content of Mo, W, V, and Cr satisfying formula (1), the total crystallized carbide area ratio being 8.5% or more and 19.0% or less, each coefficient of variation being 16.0 or less, the maximum difference in the total crystallized carbide area ratio being 6.0% or less, the maximum difference between each coefficient of variation being 10.0 or less, and the crystallized M2C type carbide area ratio being 1.5% or more and 8.0% or less.