Cold rolling method for hard stainless steel band

A stainless steel strip, hard state technology, used in metal rolling, tension/pressure control, roll speed control, etc., can solve the problems of finished product forming, affecting finishing, low production efficiency, etc., to meet the requirements of mechanical properties, Improve performance quality and eliminate internal stress

Inactive Publication Date: 2011-04-27
WUXI JIALIAN STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the stainless steel market, hard materials are widely used in high-tech industries, IT industries, and aviation and aerospace industries, with high added value, but the rolling process is difficult to master, because internal stress will be generated inside the stainless steel strip after the initial rolling, which will affect In addition to the effect of finish rolling, it also has a great influence on the forming of the finished product. Different finished products have different requirements for hardness, which increases the difficulty of the rolling process, low production efficiency, and low yield.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of hard state 201 stainless steel strip cold rolling method of the present invention, it comprises the following steps:

[0018] The first step: raw material preparation; select 201 stainless steel strip blanks with a thickness of 3.0mm and a width of 300mm;

[0019] Step 2: Preliminary rolling: use a four-roller precision rolling mill unit for the first rolling process, cold rolling 6 to 7 passes, rolling tension KN: 6, steel strip rolling speed: 120 m / min, the stainless steel strip blank 3mm rolled into a semi-finished product, the thickness of the stainless steel strip is: 1.6mm;

[0020] The third step: annealing treatment: the semi-finished stainless steel strip enters the annealing furnace at a speed of 4 m / min. The temperature in the annealing furnace is: 1060 ° C, and the protective gas is filled at the same time. The annealing furnace is divided into six areas and a section of preheating Section; the protective gas is decomposed into 75% hydrogen and 25...

Embodiment 2

[0025] A kind of hard state 201 stainless steel cold rolling method of the present invention, it comprises the following steps:

[0026] The first step: raw material preparation; select 201 stainless steel strip blanks with a thickness of 3.0mm and a width of 375mm;

[0027] Step 2: Preliminary rolling: the first rolling process is carried out by a four-high precision rolling mill unit, 6 to 7 passes of cold rolling, rolling tension KN: 7, steel strip rolling speed: 120 m / min, and the stainless steel strip blank 3mm rolled into a semi-finished product, the thickness of the stainless steel strip is: 1.6mm;

[0028] The third step: annealing treatment: the semi-finished stainless steel strip enters the annealing furnace at a speed of 4.5 m / min. The temperature in the annealing furnace is: 1060 ° C, and the protective gas is filled at the same time. The annealing furnace is divided into six areas and a section of preheating Section; the protective gas is decomposed into 75% hydr...

Embodiment 3

[0033] A kind of hard state 201 stainless steel cold rolling method of the present invention, it comprises the following steps:

[0034] The first step: raw material preparation; select 201 stainless steel strip blanks with a thickness of 3.0mm and a width of 515mm;

[0035] Step 2: Preliminary rolling: the first rolling process is carried out by a four-high precision rolling mill unit, 6 to 7 passes of cold rolling, rolling tension KN: 8, steel strip rolling speed: 120 m / min, and the stainless steel strip blank 3mm rolled into a semi-finished product, the thickness of the stainless steel strip is: 1.6mm;

[0036] The third step: annealing treatment: the semi-finished stainless steel strip enters the annealing furnace at a speed of 4 m / min. The temperature in the annealing furnace is: 1060 ° C, and the protective gas is filled at the same time. The annealing furnace is divided into six areas and a section of preheating Section; the protective gas is decomposed into 75% hydrog...

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Abstract

The invention relates to a cold rolling method for a hard stainless steel band, which comprises the following steps: selecting a stainless steel band blank; using a four-roller finishing rolling mill unit to carry out primary rolling on a 3mm-thick stainless steel band into a 1.6mm-thick semi-finished stainless steel band, carrying out intermediate annealing and finish rolling, rolling the 1.6mm-thick semi-finished stainless steel band into a 0.8mm-thick finished stainless steel band, and cutting the finished stainless steel band to a user-required width; and finally, inspecting, packaging, and warehousing. The stainless steel band has favorable form and extremely high hardness which can be up to 400 degrees or above. By arranging the annealing procedure prior to the finish rolling procedure, the invention eliminates the internal stress generated in the primary rolling process, improves the performance quality of the finished product and meets the requirements for mechanical properties of the finished product, thereby being widely used in the high-technology fields of IT industry, submarines, aircrafts and the like.

Description

technical field [0001] The invention belongs to the field of production methods for stainless steel strips, in particular to a cold rolling method for hard 201 stainless steel strips. Background technique [0002] In the stainless steel market, hard materials are widely used in high-tech industries, IT industries, and aviation and aerospace industries, with high added value, but the rolling process is difficult to master, because internal stress will be generated inside the stainless steel strip after the initial rolling, which will affect In addition to the effect of finishing rolling, it also has a great influence on the forming of the finished product. Different finished products have different requirements for hardness, which increases the difficulty of the rolling process, and the production efficiency is low, and the yield is not high. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages, thereby providing a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/30B21B37/48B21B37/46
Inventor 陈光
Owner WUXI JIALIAN STAINLESS STEEL
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