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Production method of stainless steel band for cylinder liner

A technology for stainless steel strips and production methods, applied in the direction of furnace types, furnaces, heat treatment furnaces, etc., can solve problems such as cracking, poor elongation, and poor oxidation resistance, and achieve the goals of avoiding cracking, high elongation, and improving oxidation resistance Effect

Active Publication Date: 2019-08-27
无锡华生精密材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oxidation resistance of SUS304 stainless steel and SUS301 stainless steel is poor
Moreover, the elongation of these two hard materials is about 10% at room temperature, and about 25% at a high temperature of 800°C. The elongation is poor and there is a risk of cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The production method of cylinder gasket stainless steel band of the present invention comprises the steps:

[0026] The first step: material selection

[0027] 310S steel strip with a thickness of 0.8mm is used as the raw material. The raw material is a precision cold-rolled and re-rolled coil.

[0028] The second step, a rolling

[0029] Using a precision rolling mill, under the rolling tension of 250N / mm2 and the rolling speed of 150m / min, the raw material is roughly rolled into a semi-finished steel strip with a thickness of 0.5mm.

[0030] The third step, a cleaning

[0031] Pass the semi-finished steel strip after primary rolling through the degreasing and cleaning unit at a speed of 60m / min to remove the grease remaining on the surface of the semi-finished steel strip during rolling.

[0032] The fourth step, solution treatment

[0033] When the dew point of the protective gas is at -50, the steel strip after cleaning once passes through a bright annealing fu...

Embodiment 2

[0041] The production method of cylinder gasket stainless steel band of the present invention comprises the steps:

[0042] The first step: material selection

[0043] 310S steel strip with a thickness of 1.2mm is used as the raw material. The raw material is a precision cold-rolled re-rolled coil, the purpose of which is that it is not easy to peel or perforate when rolled into a material for a cylinder head gasket.

[0044] The second step, a rolling

[0045] Using a precision rolling mill, under the rolling tension of 600N / mm2 and the rolling speed of 200m / min, the raw material is roughly rolled into a semi-finished steel strip with a thickness of 0.6mm.

[0046] The third step, a cleaning

[0047] Pass the semi-finished steel strip after primary rolling through the degreasing and cleaning unit at a speed of 100m / min to remove the grease remaining on the surface of the semi-finished steel strip during rolling.

[0048] The fourth step, solution treatment

[0049] When ...

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Abstract

The invention relates to a production method of a cylinder liner, in particular to a production method of a stainless steel band for a cylinder liner. The production method comprises the following steps of sequentially performing primary rolling, primary cleaning, solid solution treatment, secondary rolling, secondary cleaning and withdrawal and straightening on a 310S steel band, thereby obtaining the stainless steel band for the cylinder liner. An oxidation layer slightly blueing is formed in the surface of the steel band. The stainless steel band produced by the production method is higherin oxidation resistance, and can avoid cracking.

Description

technical field [0001] The invention relates to a production method of a steel strip, in particular to a production method of a cylinder gasket stainless steel strip. Background technique [0002] The cylinder head gasket is a sealing gasket between the cylinder head and the cylinder block. Its function is to fill the microscopic pores between the joint surfaces and ensure good sealing at the joint surfaces. At present, most cylinder gaskets used in the industry are made of SUS304 or SUS301 stainless steel. However, the oxidation resistance of SUS304 stainless steel and SUS301 stainless steel is poor. Moreover, the elongation rate of these two hard materials is about 10% at room temperature, and the elongation rate is about 25% at a high temperature of 800°C. The elongation rate is poor and there is a risk of cracking. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a production method of the stainless steel s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/30B21B15/00C21D1/26C21D9/52
CPCB21B1/222B21B1/30B21B15/00C21D1/26C21D9/52
Inventor 余叙斌张士宏汤福朋吴春波
Owner 无锡华生精密材料股份有限公司