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High-precision very-thin special-wide cold-rolled steel band and its working process

A technology of cold-rolled steel strip and processing technology, which is applied in the field of high-precision ultra-thin and ultra-wide cold-rolled steel strip and its processing technology, which can solve the problems of difficult implementation, high cost and high price of cold-rolled strip for enterprises, and reduce production costs , simple manufacturing process, simple post-processing effect

Inactive Publication Date: 2005-12-21
YONGXIN PRECISION MATERIAL WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rolling is carried out by a 20-high rolling mill. Due to the small diameter of the 20-high work rolls, it directly affects the shape of the product. The rolling method is complex in technology, high in cost, difficult to master, and the post-processing of the product is also complicated, which is difficult for general enterprises to implement. , and the price of cold-rolled strip is high, which greatly increases the production cost

Method used

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  • High-precision very-thin special-wide cold-rolled steel band and its working process
  • High-precision very-thin special-wide cold-rolled steel band and its working process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] The present invention selects the hot-rolled strip blank coil material, the thickness is: 1.8-3.2mm, and the length is determined according to the needs of customers. After cold rolling, the thickness of the cold-rolled steel strip 1 is 0.035-0.055 mm, and the width is 100-550 mm.

[0019] The present invention adopts following processing steps:

[0020] 1. The raw material of the hot-rolled strip coil is pickled first. The acid pickling medium is an aqueous solution of hydrochloric acid with a concentration of not less than 15%, and the acid solution is heated with steam. The temperature is about 70°C. The washing speed is generally 15 m / min, so that the scale on the surface of the steel strip can be washed off to the greatest extent;

[0021] 2. Select the thickness of the hot-rolled strip in the first rolling process according to the user's requirements for the physical properties of the finished steel strip and the thickness of the final product. The first rolling...

Embodiment 2

[0028] The present invention selects the hot-rolled strip blank coil material, the thickness is: 1.8-3.2mm, and the length is determined according to the needs of customers. After cold rolling, the thickness of the cold-rolled steel strip 1 is 0.035-0.055 mm, and the width is 100-550 mm.

[0029] The present invention adopts following processing steps:

[0030] 1. The raw material of the hot-rolled strip coil is pickled first. The pickling medium is hydrochloric acid aqueous solution with a concentration of not less than 15%, and the acid solution is heated with steam. The temperature is about 75°C. Washing speed, generally 15 m / min;

[0031] 2. The first rolling process is carried out on a four-high rolling mill. Since the thickness of the hot-rolled strip is to be rolled from 1.8-3.2mm to 0.15-0.35mm in the first rolling process, the total reduction rate is over 90%. The first rolling process uses emulsion, the volume concentration of the emulsion is selected as: 4-6%, the...

Embodiment 3

[0038] The present invention selects the hot-rolled strip blank coil material, the thickness is: 1.8-3.2mm, and the length is determined according to the needs of customers. After cold rolling, the thickness of the cold-rolled steel strip 1 is 0.035-0.055 mm, and the width is 100-550 mm.

[0039] The present invention adopts following processing steps:

[0040]1. The raw material of the hot-rolled strip coil is pickled first, and the temperature of the acid solution is heated by steam to about 80°C, and the pickling speed is generally 15 m / min;

[0041] 2. The first rolling process is carried out on a four-high rolling mill. Since the thickness of the hot-rolled strip is to be rolled from 1.8-3.2mm to 0.15-0.35mm in the first rolling process, the total reduction rate is over 90%. The first rolling process uses emulsion, the volume concentration of the emulsion is selected as: 4-6%, the pH value is: 7, the thickness of the hot-rolled strip is rolled to 0.15-0.35mm thick after ...

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Abstract

This present invention relates to a craftwork of very thin and very wide cold rolling steel band with high precision and its application. It belongs to a battery pole base plank material field. The acid cleaned hot steel rolling is cold rolled by the first rolling, then cut margin, degrease and anneal heat treatment. After cold rolled to 0.035-0.055mm by the second rolling and extended, bended, it can be cut out to finished product with client's demand. This invention has the virtues of simple and low cost. The latter disposal is simple and easy to master for company.

Description

technical field [0001] The invention relates to a high-precision ultra-thin and ultra-wide cold-rolled steel strip and its processing technology, in particular to a pole plate material widely used in high-energy rechargeable batteries, and belongs to the technical field of battery electrode substrate materials. Background technique [0002] Due to the continuous development of science and technology, electronic component materials have higher and higher requirements for the energy stored in the unit volume of the battery, and smaller and smaller requirements for the volume of electronic components. As a carrier of energy storage materials and components of electronic components— The requirements for the strip will be as small a thickness as possible and as high a performance as possible. Before the present invention was made, in the prior art, the raw materials used for battery electrode substrate materials were usually directly purchased cold-rolled strips with a thickness ...

Claims

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Application Information

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IPC IPC(8): B21B1/40
Inventor 濮德兴
Owner YONGXIN PRECISION MATERIAL WUXI
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