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Production method of precipitation hardening stainless steel precision strip steel for precision electronic products

A production method, stainless steel technology, applied in the direction of furnace type, furnace, heat treatment equipment, etc., can solve the problems that cannot meet the needs of the precision electronics industry, and achieve the effects of high level of dimensional precision control, stable production, and stable performance

Pending Publication Date: 2021-06-22
SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when using the existing method to produce semi-austenitic precipitation-hardened stainless steel strip, it cannot meet the requirements of the precision electronics industry in terms of stable performance, appearance and surface properties, and dimensional accuracy control

Method used

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  • Production method of precipitation hardening stainless steel precision strip steel for precision electronic products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: Thickness 0.1-0.4mm, the situation of Vickers hardness HV400-450

[0077] The thickness of the target finished product is 0.15mm, the steel type is SUS631, and the hardness requirement is 400-430HV. The SUS631 cold-rolled stainless steel coil with a thickness of 0.6mm and a width of 600mm is selected as the raw material, and the thickness of the finished steel strip after double-pass cold rolling is 0.15mm.

[0078] First, the stainless steel cold-rolled coil raw material with a thickness of 0.6mm is rolled by a four-column 20-high rolling mill, and rolled to 0.22mm after 5 passes, of which the deformation in the first pass is 18%, the deformation in the middle pass is 10%, and the last pass The first deformation amount is 9%, the first pass uses sandblasting rolls for the work rolls, and the other passes use Ra0.4μm rough rolls for rolling.

[0079] After the completion of the first rolling process, the steel coil is subjected to solution treatment in th...

Embodiment 2

[0089] Embodiment 2: Thickness 0.1-0.4mm, the situation of Vickers hardness HV350-400

[0090] The thickness of the target finished product is 0.4mm, the steel type is SUS631, and the hardness requirement is 350-400HV. The SUS631 cold-rolled stainless steel coil with a thickness of 1.2mm and a width of 600mm is selected as the raw material, and the thickness of the finished steel strip after double-pass cold rolling is 0.4mm.

[0091] First, the stainless steel cold-rolled coil raw material with a thickness of 1.2mm is rolled by a four-column 20-high rolling mill, and rolled to 0.54mm after 5 passes, of which the deformation in the first pass is 21%, and the deformation in the second and third passes is 15%. , the deformation amount of the fourth pass is 12%, and the deformation amount of the last pass is 9%. The working rolls of the first pass are sandblasting rolls, and the other passes are rolled with rough rolls of about Ra0.4μm.

[0092] After the first rolling process i...

Embodiment 3

[0102] Embodiment 3: Thickness 0.1-0.4mm, Vickers hardness HV450 above the situation

[0103] The thickness of the target finished product is 0.15mm, the steel type is SUS631, and the hardness is required to be above HV450. The SUS631 cold-rolled stainless steel coil with a thickness of 0.6mm and a width of 600mm is selected as the raw material, and the thickness of the finished steel strip after double-pass cold rolling is 0.15mm.

[0104] First, the stainless steel cold-rolled coil raw material with a thickness of 0.6mm is rolled by a four-column twenty-high rolling mill, and rolled to 0.3mm after 5 passes, of which the deformation in the first pass is 21%, and the deformation in the second, third and fourth passes 11%, and the deformation amount in the last pass is 7.7%. The work rolls in the first pass use sandblasting rolls, and the other passes use rough rolls with Ra0.4μm or so.

[0105] After the first rolling process is completed, the steel coil is subjected to solut...

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Abstract

The invention provides a production method of precipitation hardening stainless steel precision strip steel. The production method comprises the steps that a stainless steel coil with the thickness ranging from 1.2 to 0.6mm is selected as a raw material; the raw material is rolled into a steel strip with the thickness ranging from 0.1 to 0.5mm; and the steel strip is cleaned and straightened; and the straightened steel strip is longitudinally cut and split, and the finished strip steel is obtained. By the adoption of the production method, the precipitation hardening stainless steel products stable in performance, good in appearance surface and high in size specification precision control level can be obtained, and the requirements of the precision electronic industry are met.

Description

technical field [0001] The invention relates to the technical field of production of stainless steel strips, in particular to a production method of precipitation-hardened precision stainless steel strips for precision electronic products. Background technique [0002] Semi-austenitic precipitation hardening stainless steel (06Cr17Ni7Al) is a key material used in the field of precision electronic products. The product specification range is concentrated in 0.1-0.5mm, and the product thickness accuracy is ±0.005mm. The main characteristic of this steel grade is that it not only has the corrosion resistance close to that of austenitic stainless steel, but also has the characteristics of adjusting the mechanical properties of martensitic stainless steel through heat treatment. [0003] However, when the semi-austenitic precipitation-hardening stainless steel strip is produced by the existing method, it cannot meet the requirements of the precision electronics industry in terms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C21D1/26C21D9/52B21B1/28
CPCC21D8/0205C21D8/0236C21D8/0268C21D1/26C21D9/52B21B1/28C22C38/02C22C38/04C22C38/06
Inventor 韩小泉折启耀刘玉栋张艳霞
Owner SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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