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CN-122007154-A - Pulse current-assisted online zoning texturing device and method for ultrathin belt

CN122007154ACN 122007154 ACN122007154 ACN 122007154ACN-122007154-A

Abstract

The invention discloses an online zonal texturing device and method for an ultrathin belt assisted by pulse current, and relates to the technical field of surface treatment of metal ultrathin belts. The device comprises an inlet tensioning part, a roughening part and an outlet tensioning part which are sequentially arranged along the running direction of the strip, wherein the roughening part comprises a first roller set and a second roller set which are sequentially arranged along the running direction and are respectively used for roughening the upper surface and the lower surface of the strip, the first roller set comprises an upper surface Mao Huagun and a first flat roller which are oppositely pressed up and down, the second roller set comprises a second flat roller and a lower surface roughening roller which are oppositely pressed up and down, and the upper surface roughening roller and the lower surface roughening roller are electrically connected with two ends of a pulse power supply. The method comprises the steps of controlling the tensioning part to a working position in the texturing pass, closing the roller sets, sequentially passing the strip through the first roller set and the second roller set to finish double-sided zoning texturing, and simultaneously applying pulse current. The invention realizes online on-line on-demand double-sided roughening of the ultrathin belt, and improves the subsequent rolling friction condition and the continuous thinning capability.

Inventors

  • FAN WANWAN
  • FAN SHUHAO
  • REN ZHONGKAI
  • WEI SHUFENG
  • ZHANG HAORAN
  • WANG TAO

Assignees

  • 太原理工大学

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. The pulse current assisted online zoning texturing device for the ultrathin belt is characterized by comprising an inlet tensioning part (13), a texturing part (12) and an outlet tensioning part (14) which are sequentially arranged along the running direction of the belt; The roughening part (12) comprises a first roller set and a second roller set which are sequentially arranged along the running direction of the strip, wherein the first roller set is used for roughening the upper surface of the strip (2), and the second roller set is used for roughening the lower surface of the strip (2); the first roller set comprises an upper surface Mao Huagun (122) and a first flat roller (124) which are oppositely pressed up and down, and the second roller set comprises a second flat roller (125) and a lower surface Mao Huagun (123) which are oppositely pressed up and down; The upper surface Mao Huagun (122) and the lower surface Mao Huagun (123) are configured to electrically connect to both ends of a pulsed power source to form a closed pulsed current loop as the strip (2) passes.
  2. 2. The pulse current assisted online zoning texturing device for ultrathin belts according to claim 1, further comprising a counter-pressure adjusting mechanism, wherein the counter-pressure adjusting mechanism comprises an upper slider connecting plate (1261), a lower slider connecting plate (1262) and a synchronous opening and closing assembly, the upper surface Mao Huagun (122) and the second flat roller (125) are mounted on the upper slider connecting plate (1261), the lower surface Mao Huagun (123) and the first flat roller (124) are mounted on the lower slider connecting plate (1262), and the synchronous opening and closing assembly is used for driving the upper slider connecting plate (1261) and the lower slider connecting plate (1262) to move oppositely or reversely in a synchronous manner along a vertical direction.
  3. 3. The pulse current-assisted online zoning texturing device for the ultrathin belt is characterized in that the synchronous opening and closing assembly comprises a linear guide rail (1264), a slider (1263), an upper connecting plate rack (1265), a lower connecting plate rack (1267), a gear (1266) and a driving unit, wherein the upper slider connecting plate (1261) and the lower slider connecting plate (1262) are in sliding connection with the linear guide rail (1264) through the slider (1263), the upper connecting plate rack (1265) is fixedly arranged on the upper slider connecting plate (1261), the lower connecting plate rack (1267) is fixedly arranged on the lower slider connecting plate (1262), the gear (1266) is meshed between the upper connecting plate rack (1265) and the lower connecting plate rack (1267), and the driving unit is in transmission connection with the upper slider connecting plate (1261) or the lower slider connecting plate (1262).
  4. 4. The pulse current assisted online zone texturing device for extremely thin strips according to claim 1, wherein the inlet tensioning part (13) and the outlet tensioning part (14) comprise a supporting frame (131), a rotary roller frame (132) rotatably arranged on the supporting frame (131) and two tensioning rollers arranged on the rotary roller frame (132) in parallel, and the rotary roller frame (132) is used for rotating under the drive of a driving device so as to enable the tensioning rollers to be switched between an operating position for contacting the strip (2) and an inactive position for separating from the strip (2).
  5. 5. The pulse current assisted on-line zoning texturing device of very thin strips according to claim 4, characterized in that in the working state, two tensioning rollers of the inlet tensioning section (13) are used for forming an S-shaped path for the strip (2) and a wrap angle for the strip (2) with the upper surface Mao Huagun (122), and two tensioning rollers of the outlet tensioning section (14) are used for forming a wrap angle for the strip (2) with the lower surface Mao Huagun (123).
  6. 6. The pulse current assisted ultra-thin strip online zone texturing device of claim 1, wherein the upper surface Mao Huagun (122) and the lower surface Mao Huagun (123) are mounted by conductive bearing blocks (128), and the first flat roller (124) and the second flat roller (125) are mounted by insulating bearing blocks (129).
  7. 7. The pulse current assisted on-line zoning texturing apparatus of claim 1, further comprising a transmission mechanism, wherein the transmission mechanism comprises a driving motor (1274) and a transmission assembly, and the driving motor (1274) is in transmission connection with the upper surface Mao Huagun (122), the lower surface Mao Huagun (123), the first flat roller (124) and the second flat roller (125) through the transmission assembly, and is used for driving the four working rollers to synchronously rotate.
  8. 8. The pulse current assisted online zoning texturing device for the ultrathin belt according to claim 7 is characterized in that the transmission assembly comprises a telescopic universal joint (1273), a worm gear pair (1272) and a gear pair (1271), wherein the output end of the driving motor (1274) is connected with the gear pair (1271) through the telescopic universal joint (1273) and the worm gear pair (1272) in sequence, and the gear pair (1271) is connected with each working roller respectively.
  9. 9. A pulse current assisted online zone texturing method for extremely thin strips, characterized in that it uses a device according to any one of claims 1-8, comprising the following steps: Step one, in a rolling pass requiring roughening, controlling the inlet tensioning part (13) and the outlet tensioning part (14) to move to working positions, and simultaneously controlling the first roller set and the second roller set to be closed to a preset roller gap position; Step two, enabling the strip (2) to sequentially pass through the inlet tensioning part (13), the first roller set, the second roller set and the outlet tensioning part (14), so that in the same online pass, roughening treatment is firstly carried out on the upper surface of the strip (2) by the first roller set, and then roughening treatment is carried out on the lower surface of the strip (2) by the second roller set; And thirdly, applying pulse current to the upper surface Mao Huagun (122) and the lower surface Mao Huagun (123) which are electrically connected with two ends of a pulse power supply when the strip (2) passes through the first roller set and the second roller set, so that the current flows through the strip (2) to form a closed loop.
  10. 10. The pulse current assisted on-line zoned texturing apparatus and method of claim 9 wherein the inlet tension (13) and the outlet tension (14) are controlled to move to a non-operative position while the first and second sets of rollers are controlled to open to allow the strip (2) to pass straight in suspension during the rolling pass without texturing.

Description

Pulse current-assisted online zoning texturing device and method for ultrathin belt Technical Field The invention relates to the technical field of surface treatment and roll forming of metal ultrathin strips, in particular to an online zoning texturing device and method for ultrathin strips assisted by pulse current. Background In the multi-pass reciprocating rolling process of the metal ultrathin belt, the surface of the belt gradually tends to be smooth along with the continuous thickness reduction, so that the friction coefficient between the working roller of the rolling mill and the belt is continuously reduced, and further the problems of reduced biting capacity, difficult pressing down, limited continuous thinning and the like occur. Particularly, for difficult-to-deform metals or extremely thin specifications, the continuous rolling capacity and the surface quality of the strip are difficult to be simultaneously considered by simply depending on the mode of improving the rolling pressure or adjusting the tension, and even the defects of strip deviation, scratch, local instability and the like are easy to be induced. In the prior art, the mode of improving the friction condition between the strip and the roller mainly comprises the steps of changing the roller surface state, adding roughening treatment or off-line surface pretreatment, but the mode has the defects that firstly, most of treatment modes are separated from a rolling main line and are difficult to perform on-line intervention according to the real-time state in the rolling process of the ultrathin strip, the process connection performance is poor, secondly, the traditional mechanical roughening usually depends on pure contact compression to realize surface roughening, and stress concentration, surface damage or roughening non-uniformity easily occur in the scene of the ultrathin strip. In addition, although the existing pulse current auxiliary forming technology can reduce the local deformation resistance of the material and improve the forming state by utilizing the electro-plastic effect, the main application scene is concentrated on a rolling deformation area or a conductive roller loading scene, and how to introduce a pulse current auxiliary mechanism into the online texturing process of an ultrathin belt, and cooperatively design the contact state of the texturing roller, wrap angle control and tensioning path so as to realize continuous sequential texturing of the upper surface and the lower surface, and a specific device structure and a specific technological method are not yet available. Therefore, it is desirable to provide an on-line texturing apparatus and method for an ultrathin strip to improve the subsequent rolling friction conditions of the ultrathin strip, and to improve the continuous thinning capability and production stability. Disclosure of Invention The invention aims to provide an on-line zonal texturing device and method for an ultrathin belt assisted by pulse current, which are used for solving the problems in the prior art. In order to achieve the above purpose, the invention provides an on-line zoning texturing device for an ultrathin belt assisted by pulse current, which comprises an inlet tensioning part, a texturing part and an outlet tensioning part, wherein the inlet tensioning part, the texturing part and the outlet tensioning part are sequentially arranged along the running direction of the belt; The roughening part comprises a first roller set and a second roller set which are sequentially arranged along the running direction of the strip, wherein the first roller set is used for roughening the upper surface of the strip, and the second roller set is used for roughening the lower surface of the strip; The first roller set comprises an upper surface Mao Huagun and a first flat roller which are pressed up and down, and the second roller set comprises a second flat roller and a lower surface Mao Huagun which are pressed up and down; The upper surface texturing roller and the lower surface texturing roller are used for being electrically connected with two ends of a pulse power supply so as to form a closed pulse current loop when the strip material passes through. The device comprises a pressing adjusting mechanism, a pressing adjusting mechanism and a pressing control mechanism, wherein the pressing adjusting mechanism comprises an upper sliding block connecting plate, a lower sliding block connecting plate and a synchronous opening and closing assembly, the upper surface roughening roller and the second flat roller are arranged on the upper sliding block connecting plate, the lower surface roughening roller and the first flat roller are arranged on the lower sliding block connecting plate, and the synchronous opening and closing assembly is used for driving the upper sliding block connecting plate and the lower sliding block connecting plate to move oppositely or reversely in a synchronous manner along