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CN-122007158-A - Device for rolling invar alloy ultrathin strip by double-sided electrified auxiliary twenty-roller mill

CN122007158ACN 122007158 ACN122007158 ACN 122007158ACN-122007158-A

Abstract

The invention relates to the technical field of strip rolling, and discloses a device for rolling invar alloy ultrathin strips by a double-sided electrified auxiliary twenty-roller mill, which comprises a rolling mill, a left rolling shaft and a right rolling shaft, wherein the left rolling shaft is arranged on the left side, the right rolling shaft is arranged on the right side, and the strip is rolled by the rolling mill after being led out from the left rolling shaft and then is led into the right rolling shaft; the power-on resistance rollers are arranged on the left side and the right side of the rolling mill and are connected with the upper surface or the lower surface of the strip, the power-on resistance rollers are communicated with a power supply, and the power-on resistance rollers, the strip and the power supply form a strip power-on heating loop; the power-on resistor roller is internally provided with a plurality of sections of resistor elements along the length direction thereof in sequence, the sections of resistor elements are sequentially connected in series and are connected with an external control center, the control center is used for controlling the resistance of the resistor elements, the power-on resistor roller is made of conductive materials, and the resistor elements are attached to the inner surface of the power-on resistor roller. The temperature of the transverse direction of the strip can be adjusted in a zonal manner, and the problem of unstable current is avoided.

Inventors

  • ZHAO JINYU
  • WANG YUCHEN
  • WANG TAO
  • REN ZHONGKAI
  • CHEN QIFA
  • LIU YAXING

Assignees

  • 太原理工大学

Dates

Publication Date
20260512
Application Date
20260312

Claims (8)

  1. 1. A device for rolling invar alloy ultrathin strips by a double-sided electrified auxiliary twenty-roller mill, which is characterized by comprising: the rolling mill (1), the left side is provided with a left reel (2), the right side is provided with a right reel (3), and the strip is rolled by the rolling mill (1) after being led out from the left reel (2) and then is led into the right reel (3); the power-on resistance rollers (4) are arranged on the left side and the right side of the rolling mill (1) and are connected with the upper surface or the lower surface of the strip, the power-on resistance rollers (4) are communicated with a power supply, and the power-on resistance rollers (4), the strip and the power supply form a strip power-on heating loop; The electric resistance roller is characterized in that a plurality of sections of resistance elements (7) are sequentially arranged in the electric resistance roller (4) along the length direction of the electric resistance roller, the sections of resistance elements (7) are sequentially connected in series and connected with an external control center, the control center is used for controlling the resistance of the resistance elements (7), the electric resistance roller (4) is made of conductive materials, and the resistance elements (7) are attached to the inner surface of the electric resistance roller (4).
  2. 2. The apparatus for rolling invar alloy ultrathin strip by a double-sided energizing-assisted twenty-roller machine according to claim 1, further comprising: The two lifting platforms (8) are provided with hydraulic cylinders (9) at the bottoms and insulating rods (10) at the tops, two ends of the electrified resistor roller (4) are rotatably arranged on the two insulating rods (10), and the ends of the electrified resistor roller (4) are connected with a driving motor.
  3. 3. The apparatus for rolling invar alloy ultrathin strip by a double-sided energizing-assisted twenty-roller machine according to claim 2, further comprising: The bearing (11) is arranged in the insulating rod (10), and the electrified resistor roller (4) is connected with the bearing (11) in a matching way; And the end head of the energizing resistor roller (4) extends from the insulating rod (10) to the outside, the resistor element (7) is electrically connected with the annular electrode clamp (12), and the annular electrode clamp (12) is connected with a driving motor.
  4. 4. A device for rolling invar alloy ultrathin strip by a double-sided energizing auxiliary twenty-roller machine according to claim 2, wherein the energizing resistance roller (4) comprises a plurality of resistance roller sections connected in sequence along the length direction, and a fit clearance is arranged between the adjacent resistance roller sections along the vertical direction.
  5. 5. The apparatus for rolling invar alloy strip in a double-sided energized auxiliary twenty-roller machine of claim 4, further comprising: the convexity adjusting support rods (13) are arranged on one side, far away from the strip, of the electrified resistor roller (4), and two ends of each convexity adjusting support rod (13) are arranged on the two insulating rods (10); the hydraulic pressing tops (14) are arranged on the convexity adjusting supporting rods (13) and are in one-to-one correspondence with the resistance roller sections; The laser ranging support rods (15) are arranged on the two insulating rods (10) at two ends, the laser ranging support rods (15) are provided with laser ranging sensors or image acquisition mechanisms, the laser ranging sensors and the image acquisition mechanisms are connected with a control center, the laser ranging sensors or the image acquisition mechanisms are used for acquiring the distance between each resistor roller section and the surface of the strip, and the control center can control the hydraulic press top (14) to drive the resistor roller sections to be close to or far away from the surface of the strip.
  6. 6. The apparatus for rolling invar alloy strip in a double-sided energized auxiliary twenty-roller machine of claim 5, further comprising: The sensor array is arranged adjacent to the electrified resistor roller (4) by adopting a contact sensor or a non-contact sensor and is used for detecting the flatness of the strip before passing through the electrified resistor roller (4) and after passing through the electrified resistor roller (4), and the sensor array is in communication connection with the control center and sends the detected flatness data to the control center.
  7. 7. Device for rolling invar alloy strips in a double-sided energisation assisted twenty-roller mill according to claim 2, characterized in that an insulating block (16) is arranged between the insulating rod (10) and the lifting platform (8).
  8. 8. The device for rolling invar alloy ultrathin strips by using the twenty-high auxiliary double-sided electrifying roll mill according to claim 6, wherein a plurality of the resistor elements (7) are respectively connected into a control bypass, the control bypass is electrically connected with a control center, the sensor array comprises temperature sensors for detecting the temperature before the strip passes through the electrifying resistor roller (4) and after the strip passes through the electrifying resistor roller (4), and the control center controls the heating power of the resistor elements (7) through the control bypass based on the temperature detected by the temperature sensors.

Description

Device for rolling invar alloy ultrathin strip by double-sided electrified auxiliary twenty-roller mill Technical Field The invention relates to the technical field of strip rolling, in particular to a device for rolling invar alloy ultrathin strips by a twenty-high auxiliary twenty-high rolling mill with double-sided electrification. Background The 4J36 invar alloy ultrathin strip is an iron-nickel alloy with extremely low thermal expansion coefficient, and is a core substrate material for manufacturing a high-end precise metal mask plate (FINE METAL MASK, FMM). During the production process, the front and back sides of invar alloy strip need to be rolled to form different structures. The twenty-high rolling mill is used as main stream equipment for producing ultrathin strips, has high rigidity, large rolling reduction and excellent strip shape control capability, but when invar alloy is rolled, the invar alloy has the characteristics of obvious work hardening, large deformation resistance and poor heat conductivity, so that the problem of uneven transverse stress distribution is extremely easy to occur in the rolling process, and strip shape defects such as transverse curling, wavy edges and the like are caused in the strip. These defects can seriously affect the dimensional stability and graphic accuracy of the final FMM product, limiting its application in the field of high-accuracy display. In order to solve the technical problems, the prior art improves the heating uniformity in a way of carrying out electrifying heating on the strip through electrifying resistance rollers at two ends of a rolling mill so as to be beneficial to improving the stress distribution uniformity of invar alloy. However, since the front and back sides of the invar alloy strip need to be rolled to form different structures, the front and back sides of the strip are easily separated from the electrified resistance roller portions, thereby causing unstable current. In addition, the heating temperatures required for the transverse direction of the strip section are different (influenced by the structure formed by rolling), and zone heating of the strip cannot be achieved by energizing the resistance roller to heat the strip. In view of this, it is a need for a person skilled in the art to solve the above-mentioned technical drawbacks, in part or in whole. Disclosure of Invention The invention aims to provide a device for rolling invar alloy ultrathin strips by a double-sided electrified auxiliary twenty-roller mill, which solves the problems in the prior art. In order to achieve the above object, the present invention provides an apparatus for rolling invar alloy ultrathin strip by a double-sided energizing auxiliary twenty-roller, comprising: the rolling mill is provided with a left reel on the left side and a right reel on the right side, and the strip is rolled by the rolling mill after being led out from the left reel and then is led into the right reel; The power-on resistance rollers are arranged on the left side and the right side of the rolling mill and are connected with the upper surface or the lower surface of the strip, the power-on resistance rollers are communicated with a power supply, and the power-on resistance rollers, the strip and the power supply form a strip power-on heating loop; The electric resistance roller is characterized in that a plurality of sections of resistance elements are sequentially arranged in the electric resistance roller along the length direction of the electric resistance roller, the sections of resistance elements are sequentially connected in series and connected with an external control center, the control center is used for controlling the resistance of the resistance elements, the electric resistance roller is made of conductive materials, and the resistance elements are attached to the inner surface of the electric resistance roller. Further, the method further comprises the following steps: The two lifting platforms are provided with hydraulic cylinders at the bottoms and insulating rods at the tops, the two ends of the electrified resistor roller are rotatably arranged on the two insulating rods, and the ends of the electrified resistor roller are connected with a driving motor. Further, the method further comprises the following steps: the bearing is arranged in the insulating rod, and the electrified resistance roller is connected with the bearing in a matching way; And the end head of the electrified resistance roller extends to the outside from the insulating rod, the resistance element is electrically connected with the annular electrode clamp, and the annular electrode clamp is connected with the driving motor. Further, the energized resistance roller comprises a plurality of resistance roller sections which are sequentially connected along the length direction, and a fit clearance along the vertical direction is formed between every two adjacent resistance roller sections