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High-precision ultrathin cold-rolled steel strip for electronic component and production method thereof

A technology for electronic components and cold-rolled steel strips, which is applied in the field of high-precision ultra-thin cold-rolled steel strips for electronic components and their production fields, can solve the problems of poor product punching performance, high processing costs, and long production cycles, and achieve uniform thickness. , the process is short, the effect of reducing production costs

Active Publication Date: 2018-07-10
山东泰山轧钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of the above methods are: in order to achieve the purpose of extremely thin product thickness, the process of secondary cold rolling and secondary annealing is adopted, resulting in long production cycle and high processing cost.
Although this method can produce extremely thin cold-rolled steel strips, it also has the following disadvantages: the use of a 20-high rolling mill for secondary rolling and continuous annealing furnace annealing has the problems of large investment and poor stamping performance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]In our company, high-precision ultra-thin cold-rolled steel strips for electronic components with a thickness of 0.16mm are produced. It is made of hot-rolled steel strips. The chemical composition (wt%) of the hot-rolled steel strips is: C: 0.001%, Si: 0.004%, Mn: 0.18%, P: 0.005%, S: 0.001%, and the rest are Fe and unavoidable impurities.

[0026] The production method of the above-mentioned high-precision ultra-thin cold-rolled steel strip for electronic components is characterized in that it includes the following production steps:

[0027] 1) After pretreatment, converter blowing, ladle blowing argon, slab continuous casting, and hot rolling, the produced molten iron is made into a hot-rolled steel strip with a thickness of 2.3 mm. The chemical composition of the hot-rolled steel strip is The composition (wt%) is: C: 0.001%, Si: 0.004%, Mn: 0.18%, P: 0.005%, S: 0.001%, and the rest are Fe and unavoidable impurities; during the pretreatment process of the molten iron...

Embodiment 2

[0040] In our company, high-precision ultra-thin cold-rolled steel strips for electronic components with a thickness of 0.15 mm are produced. It is made of hot-rolled steel strips. The chemical composition (wt%) of the hot-rolled steel strips is: C: 0.0016%, Si: 0.007%, Mn: 0.13%, P: 0.008%, S: 0.003%, and the rest are Fe and unavoidable impurities.

[0041] The method for producing the above-mentioned high-precision ultra-thin cold-rolled steel strip for electronic components is characterized in that it comprises the following production steps:

[0042] 1) After pretreatment, converter blowing, ladle blowing argon, slab continuous casting, and hot rolling, the produced molten iron is made into a hot-rolled steel strip with a thickness of 2.0 mm. The chemical composition of the hot-rolled steel strip is The composition (wt%) is: C: 0.0016%, Si: 0.007%, Mn: 0.13%, P: 0.008%, S: 0.003%, and the rest is Fe and unavoidable impurities; during the pretreatment process of the molten ...

Embodiment 3

[0055] In our company, we produce high-precision ultra-thin cold-rolled steel strips for electronic components with a thickness of 0.14 mm. It is made of hot-rolled steel strips. The chemical composition (wt%) of the hot-rolled steel strips is: C: 0.02%, Si: 0.008%, Mn: 0.10%, P: 0.010%, S: 0.005%, and the rest are Fe and unavoidable impurities.

[0056] The production method of the above-mentioned high-precision ultra-thin cold-rolled steel strip for electronic components is characterized in that it includes the following production steps:

[0057] 1) After pretreatment, converter blowing, ladle argon blowing, slab continuous casting, and hot rolling, the produced molten iron is made into a hot-rolled steel strip with a thickness of 1.8 mm. The chemical composition of the hot-rolled steel strip is The composition (wt%) is: C: 0.02%, Si: 0.008%, Mn: 0.10%, P: 0.010%, S: 0.005%, the rest is Fe and unavoidable impurities; during the pretreatment process of the molten iron : Use...

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Abstract

The invention discloses a high-precision ultrathin cold-rolled steel strip for an electronic component and a production method thereof. The thickness of the high-precision ultrathin cold-rolled steelstrip is 0.14 to 0.16mm; the high-precision ultrathin cold-rolled steel strip is prepared by carrying out acid washing of a hydrochloric acid acid-washing machine set, one-rolling-path rolling of a single-rack and six-roller HC rolling machine, unwinding and edge cutting of a slitting machine set, primary annealing of a bright cover type annealing furnace, flattening of a single-rack and four-roller flattening machine, and plate-shaped defect elimination of a bending and straightening machine set on a hot-rolled steel strip in sequence. The high-precision ultrathin cold-rolled steel strip disclosed by the invention has the advantages of short flow and high product rate, secondary rolling and secondary annealing procedures are omitted and the production cost is reduced; meanwhile, the high-precision ultrathin cold-rolled steel strip for the electronic component has the characteristics of low impurity content, ultrathin thickness, high size precision, flat and straight plate shape, highsurface reflection rate, high roughness uniformity, low yield ratio, uniform performance and good stamping performance, and is applicable to electronic basic components including a battery shell, a communication cable, a television color tube, a carbon membrane resistor and the like.

Description

technical field [0001] The invention relates to an improvement of a production method of ultra-thin cold-rolled steel strip, in particular to a high-precision ultra-thin cold-rolled steel strip for electronic components and a production method thereof, the thickness of which is 0.14-0.16mm, and the dimensional accuracy is high High-precision ultra-thin cold-rolled steel strip for electronic components with straight plate shape, high surface reflectivity, uniform roughness, low yield ratio, and excellent stamping performance. Background technique [0002] With the rapid development of electronic industries such as batteries, communication cables, TV color tubes, and carbon film resistors, my country's demand for ultra-thin cold-rolled steel strips for electronic components has risen sharply. Ultra-thin cold-rolled steel strips for electronic components not only require good stamping performance, but also have very high requirements on surface quality, making production diffic...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C21D8/02C21D1/26
CPCC21D1/26C21D8/0226C21D8/0236C22C38/002C22C38/004C22C38/02C22C38/04
Inventor 王永胜陈普亓海燕翟乃波候元新赵丽明汪丽丽朱爱美亓增艳
Owner 山东泰山轧钢有限公司
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