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A rolling method for producing ultra-thin strip steel in a cold-rolled six-high single-stand reversing rolling mill

A cold-rolled strip, single-stand technology, used in rolls, metal rolling, metal rolling, etc., can solve the problem of not introducing rolling regulations, and achieve the effect of optimizing the speed of the unit and reducing energy and power consumption.

Active Publication Date: 2020-03-27
ANSTEEL BEIJING RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The rolling process proposed in the document "Development of Thin Gauge Products by Single-Stand Reversible Rolling Mill" mainly involves the rolling schedule required when the finished product thickness is 0.4mm strip steel. The rolling schedule only explains the reduction ratio and rolling force , the paper does not introduce the rolling procedures required for rolling strips below 0.2mm

Method used

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  • A rolling method for producing ultra-thin strip steel in a cold-rolled six-high single-stand reversing rolling mill
  • A rolling method for producing ultra-thin strip steel in a cold-rolled six-high single-stand reversing rolling mill

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Embodiment Construction

[0016] Below in conjunction with embodiment the present invention is described in detail.

[0017] (1) Taking carbon steel SPCC steel as an example, rolling with a large compression ratio, the product is rolled from a raw material thickness of 2.0mm to a finished product thickness of 0.18mm, the strip width is 1050mm, and the total compression ratio is 91%, reaching the same level of steel The limit value of the compression ratio.

[0018] The unit adopts the motor power distribution mode, and the absolute values ​​of reduction ratios from the first pass to the seventh pass are 31.2%, 25.81%, 16.71%, 10.5%, 7.55%, 4.89%, and 3.34%, respectively.

[0019] The unit tension from the first pass to the seventh pass is set as follows: the first pass: the entrance tension is 39.13MPa, the exit tension is 72.55MPa; the second pass: the entrance tension is 72.55MPa, the exit tension is 107.16MPa; the third pass : Entry tension 107.16MPa, exit tension 135MPa; fourth pass: entry tension...

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Abstract

The invention discloses a rolling method for production of ultra-thin strip steel through a six-roller single-rack reversable cold-rolling mill. For the cold-rolled strip steel with the inlet width being 1050-1100 mm, the inlet thickness being 2.0-2.15 mm and the rolling thickness being 0.16-0.20 mm, reasonable roller bending force of an intermediate roller and working rollers and a reasonable roller shifting value of the intermediate roller are given, so that good plate shape quality of a cold-rolled plate at an outlet is guaranteed; and press distribution of seven passes and the speed of a rack are given for optimizing the speed of a unit; and reasonable rolling force and reasonable tension are given, so that energy and electricity consumption of the unit is reduced.

Description

technical field [0001] The invention belongs to the technical field of metal material forming, and in particular relates to the rolling process and control of ultra-thin cold-rolled steel strips of 0.20 mm or less. Background technique [0002] As a high value-added product, cold-rolled ultra-thin products with a thickness of less than 0.2 mm are in short supply in the market, and many iron and steel companies are still unable to stably produce such cold-rolled products. [0003] With the improvement of people's living standards in our country, the domestic demand for ultra-thin cold-rolled steel sheets has continued to grow in recent years, and the production capacity has also increased sharply. However, considering per capita consumption, my country's ultra-thin strip steel market is far from saturated. Different from ordinary steel, the yield strength and work hardening index of ultra-thin cold-rolled plate are relatively large. Under the same conditions, the rolling pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/40B21B37/48B21B37/58
CPCB21B1/40B21B37/48B21B37/58B21B2265/04B21B2265/08B21B2267/10B21B2269/02
Inventor 宋君杜天容王奎越刘宝权张岩秦大伟宋宝宇曹忠华侯永刚王莹
Owner ANSTEEL BEIJING RES INST
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