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Production process of precise stainless steel band for vehicle sealing pad

A production process and technology for stainless steel strips, applied in the field of precision stainless steel strips, can solve the problems of large thickness tolerance fluctuations, unstable mechanical properties, and poor plate shape flatness of stainless steel strips, achieving small thickness tolerance fluctuations and improved product quality. , The effect of not easy to crack

Inactive Publication Date: 2010-06-02
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 automobile gaskets are rolled by multi-roll mills, and other auxiliary equipment are used to improve the flatness of the plate. However, the stainless steel strips made by the existing technology have large thickness tolerance fluctuations, Unstable mechanical properties, poor plate shape flatness, easy to produce cracks during stamping, secondary deformation and scrapping, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The present invention selects stainless steel cold-rolled coils as raw materials, with a thickness of 0.80mm and a width of 374mm, and the thickness of the finished steel strip after cold rolling is: 0.20mm.

[0017] The present invention adopts following processing steps:

[0018] 1. Firstly, the raw material of stainless steel cold-rolled coil with a thickness of 0.80mm is cold-rolled for the first time with a 20-high Sendzimir rolling mill, and the coil is rolled at the same time. The lubricating coolant used in the cold-rolling is from Changzhou Guohong Chemical Co., Ltd. "DAPHNE STAINLESS ROLL P-T" rolling oil provided by the company, the temperature of the rolling oil is 30°C. The surface roughness of the working rolls of the rolling mill is Ra0.10μm, and they are cold-rolled to a thickness of 0.33mm after 6 passes. The tension after the first pass is 13kg / mm 2 , front tension 22kg / mm 2 , Mill speed 80 m / min. After that, the front and rear tension of each pass...

Embodiment 2

[0032] The present invention selects stainless steel cold-rolled coils as raw materials, with a thickness of 1.0mm and a width of 430mm, and the thickness of the finished steel strip after cold rolling is 0.25mm.

[0033] The present invention adopts following processing steps:

[0034] 1. Firstly, the raw material of stainless steel cold-rolled coil with a thickness of 1.0mm is cold-rolled for the first time with a 20-high Sendzimir rolling mill, and the coil is rolled at the same time. The lubricating coolant used in the cold-rolling is from Changzhou Guohong Chemical Co., Ltd. "DAPHNE STAINLESS ROLL P-T" rolling oil provided by the company, the temperature of the rolling oil is 35°C. The surface roughness of the working rolls of the rolling mill is Ra0.20μm, and they are cold-rolled to a thickness of 0.41mm after 6 passes. The tension after the first pass is 14kg / mm 2 , front tension 25kg / mm 2 , The rolling mill speed is 70 m / min. After that, the front and rear tension ...

Embodiment 3

[0048] The present invention selects stainless steel cold-rolled coils as raw materials, with a thickness of 1.5mm and a width of 375mm, and the thickness of the finished steel strip after cold rolling is 0.30mm.

[0049] The present invention adopts following processing steps:

[0050] 1. First, the stainless steel cold-rolled coil with a thickness of 1.5mm is cold-rolled for the first time with a 20-high Sendzimir rolling mill, and the coil is rolled at the same time. The lubricating coolant used in the cold-rolling is from Changzhou Guohong Chemical Co., Ltd. The "DAPHNE STAINLESS ROLL P-T" rolling oil provided by the company has a rolling oil temperature of 40°C. The surface roughness of the working rolls of the rolling mill is Ra0.25μm, and they are cold-rolled to a thickness of 0.50mm after 7 passes. The tension after the first pass is 15kg / mm 2 , front tension 28kg / mm 2 , Mill speed 60 m / min. After that, the front and rear tension of each pass should be 28~48kg / mm ...

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Abstract

The invention relates to a production process of a precise stainless steel band for a vehicle sealing pad. The production process comprises the following working procedures of: first cold rolling, solid solution, second cold rolling, spraying and degreasing, hot water spraying, hot wind drying, pre-bending straightening, stress relieving annealing, final bending straightening, finished product cutting, and the like. The production process adopts a 20-roller sendzimir mill and a unique rolling process to carry out cold rolling. Through the processes of degreasing, solid solution treatment, bending straightening, stress relieving annealing, and the like, the thickness tolerance undulation of a product is small, mechanical properties are stable, the plate flatness is good, the product is not easy to generate cracks and secondary deformation during stamping, and the quality of the product is obviously improved, thus the production process is suitable for industrial production and can meet the requirement for high quality of the vehicle part industry.

Description

technical field [0001] The invention relates to a production process of a precision stainless steel strip widely used in processing flange sealing gaskets of automobile engine cylinders, sealing gaskets of automatic gearboxes and sealing gaskets of automotive air-conditioning compressors. Background technique [0002] At present, the precision stainless steel strips used in the manufacture of automobile gaskets are rolled by multi-roll mills, and other auxiliary equipment are used to improve the flatness of the plate. However, the stainless steel strips made by the existing technology have large thickness tolerance fluctuations, Unstable mechanical properties, poor plate shape flatness, easy to produce cracks during stamping processing, secondary deformation and scrapping, etc. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a product that can produce small fluctuations in thickness tolera...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B37/48B21B37/46C23G3/02C21D9/52C21D9/663
Inventor 濮德兴
Owner YONGXIN PRECISION MATERIAL WUXI
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