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Production technology of precise stainless steel strip used for high-level mobile phone

A production process, stainless steel strip technology, applied in the field of precision stainless steel strip production process, can solve the problems of unsatisfactory high-end mobile phone accessories, inconsistent surface color, poor flatness of plate shape, etc., to achieve uniform surface color, surface color Effect of no color difference and small thickness tolerance fluctuation

Inactive Publication Date: 2013-03-20
YONGXIN PRECISION MATERIAL WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the precision stainless steel strips used in the manufacture of high-end mobile phone accessories are rolled by multi-roll mills, and other auxiliary equipment are used to improve the surface and flatness of the plate. However, the stainless steel strips made by the existing process have thickness tolerance fluctuations. Large, unstable mechanical properties, inconsistent surface color, scratches and bumps, poor flatness of the plate shape, etc., cannot meet the requirements of steel strips for high-end mobile phone accessories

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The process of this embodiment uses stainless steel cold-rolled coils as raw materials, the grade is SUS304, the thickness is 1.50 mm, and the width is 406 mm. The target thickness of the finished steel strip is 0.50mm, the width is 400mm, the product state is 3 / 4H, and the hardness (HV) is 310-340.

[0024] The present invention adopts following processing steps:

[0025] a. First rewind the raw material of stainless steel cold-rolled coil with a thickness of 1.50mm by rewinding machine for the first time, and the coiling tension is 18kg / mm ​​when rewinding for the first time 2 , the speed is 80 m / min, and the steel strip is protected by the whole roll of backing paper during the first rewinding process;

[0026] b. The steel strip after the first rewinding is cold-rolled for the first time with a 20-high Sendzimir rolling mill. The lubricating coolant used for the first cold-rolling is "DAPHNESTAINLESS ROLL P-T" provided by Changzhou Guohong Chemical Co., Ltd. "Roll...

Embodiment 2

[0046] The process of this embodiment uses stainless steel cold-rolled coils as raw materials, the grade is SUS304, the thickness is 0.90 mm, and the width is 406 mm. The target thickness of the finished steel strip is 0.50mm, the width is 400mm, the product state is 1 / 2H, and the hardness (HV) is 250-280.

[0047] The present invention adopts following processing steps:

[0048] a. Firstly, the raw material of stainless steel cold-rolled coil with a thickness of 0.90mm is rewound by a rewinder for the first time, and the coiling tension is 16kg / mm ​​during the first rewinding 2 , the speed is 100 m / min, and the steel strip is protected by the whole roll of backing paper during the first rewinding process;

[0049] b. The steel strip after the first rewinding is cold-rolled for the first time with a 20-high Sendzimir rolling mill, and the lubricating coolant used in the cold rolling is rolled with "DAPHNESTAINLESS ROLL P-T" provided by Changzhou Guohong Chemical Co., Ltd. oi...

Embodiment 3

[0069] The process of this embodiment selects stainless steel cold-rolled coil as raw material, the grade is SUS301, the thickness is 0.80mm, the width is 406mm, the thickness of the finished steel strip is 0.30mm, the width is 400mm, the product state is 1 / 2H, and the hardness (HV) is 310~340, elongation (δ 50 ) is ≥ 15%.

[0070] The present invention adopts following processing steps:

[0071] a. Firstly, the raw material of stainless steel cold-rolled coil with a thickness of 0.80mm is rewound for the first time with a rewinder, and the coiling tension is 14kg / mm ​​during the first rewinding 2 , the speed is 120 m / min, and the steel strip is protected by the whole roll of backing paper during the first rewinding process;

[0072] b. The steel strip after rewinding is cold-rolled for the first time with a 20-high Sendzimir rolling mill, and the lubricating coolant used for the first cold-rolling is rolled with "DAPHNESTAINLESS ROLL P-T" provided by Changzhou Guohong Chemi...

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Abstract

The invention relates to a productive technology of a precise stainless steel strip used for a high-end mobile phone, which comprises the steps of primary rewinding, primary cold rolling, primary spray degreasing, primary hot water spraying, primary hot wind drying, solid solution, secondary rewinding, secondary cold rolling, secondary spray degreasing, secondary hot water spraying, secondary hot wind drying, stretch bending straightening, clipping and the like. The stainless steel strip obtained by the technology has small tolerance fluctuation in product thickness, stable performance, uniform and consistent color of the surface without color aberration, no bruise and no convex point defect, the flatness of the strip shape is good, and compared with the technology of the prior art, the invention obviously improves the quality of the product, is suitable for industrialized production, and meets the high requirements on quality in electronic industry, and the obtained stainless steel strip is very suitable for being used on high-end mobile phones.

Description

technical field [0001] The invention relates to a production process for processing precision stainless steel strips for high-grade mobile phone accessories. Background technique [0002] At present, the precision stainless steel strips used in the manufacture of high-end mobile phone accessories are rolled by multi-roll mills, and other auxiliary equipment are used to improve the surface and flatness of the plate. However, the stainless steel strips made by the existing process have thickness tolerance fluctuations. Large, unstable mechanical properties, inconsistent surface color, scratches and bumps, poor flatness of the plate shape, etc., cannot meet the requirements of steel belts for high-end mobile phone accessories. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a precision stainless steel strip for high-grade mobile phones that can produce stable performance, small thickness tole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/22B21B37/48B21B37/46C23G3/02C21D9/52
Inventor 濮永法
Owner YONGXIN PRECISION MATERIAL WUXI
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