Production process of low-magnetic stainless steel band

A technology of stainless steel strip and production process, applied in the field of production process of low magnetic stainless steel strip, can solve the problems of poor performance and long time consumption of stainless steel strip, and achieve the effect of eliminating magnetism, short time consumption and high hardness

Active Publication Date: 2014-01-01
山东能源装备集团乾元不锈钢制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production process of low-magnetic stainless steel strip, to solve the problems of long time consumption and poor performance of the produced stainless steel strip in the existing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The 301 stainless steel strip with a thickness of 0.6mm is selected, and after conventional preprocessing such as semi-finished product rolling, solution treatment, finished product rolling, degreasing treatment, stretching and straightening treatment, a finished steel strip with a thickness of 0.1mm is obtained.

[0028] The finished steel strip is heat-treated through a stress-relief continuous annealing furnace with tension devices at the entrance and exit to reduce the magnetic properties of the stainless steel strip. Fill the annealing furnace with nitrogen to prevent surface oxidation. Put it into an annealing furnace at a temperature of 500°C, a tension of 5KN, and a speed of 8 m / min (meters per minute, mpm) to obtain a low-magnetism stainless steel strip.

[0029] The main technical indicators of the products produced by the above process can reach: the thickness is 0.1mm, the width is 600mm, the thickness deviation is ±0.003mm; the hardness is HV400-430, and th...

Embodiment 2

[0031] The 2B billet of SUS301 austenitic cold-rolled stainless steel strip with a thickness of 1.5mm is selected, and after conventional preprocessing such as semi-finished product rolling, solution treatment, finished product rolling, degreasing treatment, stretching and straightening treatment, a finished product with a thickness of 0.4mm is obtained steel belt.

[0032] The finished steel strip is heat-treated through a stress-relief continuous annealing furnace with tension devices at the entrance and exit to reduce the magnetic properties of the stainless steel strip. Fill the annealing furnace with ammonia decomposition gas to prevent oxidation on the surface. The temperature is 700°C, the tension is 30KN, and the speed is 4mpm. Put it into the annealing furnace to obtain a low magnetic stainless steel strip.

[0033] The main technical indicators of the products produced by the above process can reach: thickness 0.4mm, width 600mm, thickness deviation: ±0.003mm; hardne...

Embodiment 3

[0035] 304 stainless steel with a thickness of 1.0mm was selected, and after conventional preprocessing such as semi-finished product rolling, solution treatment, finished product rolling, degreasing treatment, stretching and straightening treatment, a finished steel strip with a thickness of 0.05mm was obtained.

[0036] The finished steel strip is heat-treated through a stress-relief continuous annealing furnace with tension devices at the entrance and exit to reduce the magnetic properties of the stainless steel strip. Fill the annealing furnace with pure hydrogen to prevent oxidation on the surface. The temperature is 800°C, the tension is 20KN, and the speed is 10mpm. Put it into the annealing furnace to obtain a low-magnetism stainless steel strip.

[0037] The main technical indicators of the products produced by the above process can reach: the thickness is 0.05mm, the width is 600mm, the thickness deviation is ±0.003mm; the hardness is HV420-450, and the remanence rate...

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PUM

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Abstract

A production process of a low-magnetic stainless steel band comprises the following steps that a finished stainless steel band is obtained after the austenite stainless steel band is preprocessed; the finished stainless steel band is placed in a distressing continuous-type annealing furnace for annealing, an inlet and an outlet of the distressing continuous-type annealing furnace are respectively provided with a tension device, the distressing continuous-type annealing furnace is filled with protective gas, the annealing condition comprises the aspects that tension ranges from 5 KN to 30 KN, the speed ranges from 4m / min to 10m / min, and the low-magnetic stainless steel band is obtained. The degaussing heat treatment process is simple and short in consumed time, only takes 3-5 minutes, and is high in production efficiency.

Description

technical field [0001] The invention relates to a production process of a stainless steel strip, in particular to a production process of a low-magnetism stainless steel strip. Background technique [0002] When the stainless steel strip is used in the electronics manufacturing industry, its magnetism will affect the working stability of the internal electronic components. Therefore, it is required that the stainless steel strip used must have high strength, non-magnetization and low magnetization. [0003] The hard stainless steel strip will have a certain degree of magnetism during processing, and the remanence rate is usually above 2.0. At present, the stainless steel strip is generally kept at an environment above 800 or even 850°C for a long time to eliminate magnetism. However, the heat treatment time of this process is long, and the efficiency is low. At the same time, the phenomenon of "sensitization temperature" may be encountered. "Sensitization temperature" refers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/56C21D1/30
Inventor 宿登峰孔凡伟唐杰
Owner 山东能源装备集团乾元不锈钢制造有限公司
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