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Micro-rolling method for extra-thin variable-thickness strip

A technology of variable thickness and strip, which is applied in the field of strip rolling, can solve the problems that there are still relatively few researches on ultra-thin variable-thickness strip rolling, cannot meet the needs of variable-thickness ultra-thin strips, and cannot achieve thickness, etc. Achieve the effects of improving work efficiency and rolling accuracy, facilitating later data processing, and convenient operation

Inactive Publication Date: 2017-07-25
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the synchronous rolling and asynchronous rolling of ordinary strips, and the variable thickness rolling methods of thick and medium plates have been developed relatively maturely; however, the research on the rolling of extremely thin variable thickness strips is still relatively limited. few
Most of the existing two-roll and four-roll rolling mills have large roll diameters and complex operations, requiring multiple passes of rolling to achieve the required thickness; and the change of thickness cannot be realized, and the production efficiency is very low
Since the current production equipment and rolling methods cannot meet the market demand for variable-thickness ultra-thin strips, it is necessary to improve the existing ultra-thin variable-thickness strip rolling methods

Method used

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  • Micro-rolling method for extra-thin variable-thickness strip
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  • Micro-rolling method for extra-thin variable-thickness strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: A pure copper strip with a length of 150 mm and a thickness of 0.118 mm was rolled into a thickness of 0.102 mm in the thick zone, a thickness of 0.062 mm in the thin zone, and a length of the transition zone of 4.91 mm.

[0039] The specific operation steps are: (1) Connect all the cables on the rolling mill firmly in turn, and then connect to the power supply.

[0040] (2) Open the back door of the control cabinet, turn on all the motor circuit breaker switches (QF) (“OFF” to “ON” state), then turn the PLC power switch to the “I” state, and turn the CPU switch to the “RUN” state .

[0041] (3) Confirm that the touch screen on the console has been activated successfully and has entered the program interface.

[0042] (4) Enter the variable thickness rolling module and input the rolled thick area H 2 =0.100mm, thick zone length L1=10mm, rolled thin zone H 3 =0.060mm, thin area length L 2 =10mm, transition zone length L 3 =4.90mm, rolling speed paramet...

Embodiment 2

[0048] Embodiment 2: A pure copper strip with a length of 150 mm and a thickness of 0.211 mm is rolled to a thickness of 0.19 mm in a thick zone, a thickness of 0.09 mm in a thin zone, and a length of a transition zone of 6.70 mm.

[0049] The specific operation steps are: (1) Connect all the cables on the rolling mill firmly in turn, and then connect to the power supply.

[0050] (2) Open the back door of the control cabinet, turn on all the motor circuit breaker switches (QF) (“OFF” to “ON” state), then turn the PLC power switch to the “I” state, and turn the CPU switch to the “RUN” state .

[0051] (3) Confirm that the touch screen on the console has been activated successfully and has entered the program interface.

[0052] (4) Enter the variable thickness rolling module and input the rolled thick area H 2 =0.210mm, thick zone length L1=10mm, rolled thin zone H 3 =0.090mm, thin area length L 2 =10mm, transition zone length L 3 =6.50mm, rolling speed parameter 160cm / mi...

Embodiment 3

[0058] Embodiment 3: A pure copper thin strip with a length of 150 mm and a thickness of 0.3 mm was rolled into a thickness of 0.278 mm in the thick area, a thickness of 0.091 mm in the thin area, and a length of 6.72 mm in the transition area.

[0059] The specific operation steps are as follows: (1) Connect all the cables on the rolling mill firmly in turn, and then connect to the power supply.

[0060] (2) Open the back door of the control cabinet, turn on all the motor circuit breaker switches (QF) (“OFF” to “ON” state), then turn the PLC power switch to the “I” state, and turn the CPU switch to the “RUN” state .

[0061] (3) Confirm that the touch screen on the console has been activated successfully and has entered the program interface.

[0062] (4) Enter the variable thickness rolling module and input the rolled thick area H 2 =0.280mm, thick zone length L1=10mm, rolled thin zone H 3 =0.060mm, thin area length L 2 =0.090mm, transition zone length L 3 =6.50mm, roll...

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Abstract

The invention discloses a micro-rolling method for an extra-thin variable-thickness strip, and the micro-rolling method solves the problems that operations in the prior art are complex, the needed thickness can be reached by needing multi-pass rolling and the production efficiency is low. The method comprises the following steps of: firstly, determining a deformation-thickness ratio as H2 / H3, thereby determining a roll gap Hgap; in case of determining rolling speed V, setting an initial rolling roll gap as H2, length of a to-be-rolled thick region as S1 and length of a to-be-rolled thin region as S2; selecting a rolling direction and a rolling control way, opening the roll gap, putting a to-be-rolled strip onto a roll, closing the roll gap, pressing the roll by initial pressure of closing the roll gap, and clamping and pressing the head part of the strip; and enabling a rolling mill to start operation and rolling according to set roll gap amount. The micro-rolling method disclosed by the invention can realize variable-thickness micro rolling on the extra-thin strip, precisely controls thickness of a thin region and a thick region as well as length of a transition region, and completes regulation on the roll gap through automatic control; and single-pass pressing amount is increased by a hydraulic type pressing system, so that once forming of a variable-thickness rolled piece is realized.

Description

technical field [0001] The invention belongs to the technical field of strip rolling, and in particular relates to a micro-rolling method for ultra-thin variable-thickness strips with high production efficiency, precise strip thickness variation, simple operation and good controllability. Background technique [0002] With the rapid development of science and technology, electronic consumer products are also constantly developing in the direction of multi-function, miniaturization, light weight, high density and high reliability. The trend of continuous miniaturization of electronic products has sharply increased the demand for thin and ultra-thin strip parts, resulting in higher requirements for the processing size of parts in the market. [0003] The research on variable thickness strip rolling at home and abroad mainly focuses on the differential thickness plate with a thickness of 0.5-3mm, which is used in the automotive industry, and the LP plate with a thickness of 10-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/26B21B37/58B21B38/08B21B38/10
CPCB21B37/26B21B37/58B21B38/08B21B38/10B21B2261/04B21B2271/02
Inventor 张红梅荆毅吴昊李娜赵大东彭兴东姜正义
Owner UNIV OF SCI & TECH LIAONING
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