Cold-rolled stainless steel strip demagnetizing process

Abstract

The invention discloses a cold-rolled stainless steel strip demagnetizing process. The cold-rolled stainless steel strip demagnetizing process is characterized by comprising the following steps: 1) asteel coil is fed into an uncoiling mandrel by a feeding trolley; (2) the mandrel is expanded to expand the steel coil, the steel strip is fed into a shearing machine, a paper collecting machine is started, and steel strip packing paper is directly wound on a reel of the paper collecting machine; 3) the uncoiler is inched to enable the tail part of the steel plate to enter the shearing machine, then the tail part of the steel belt is continuously inched to be fed to a seam welder, and a winding drum is then unloaded; 4) the uncoiling machine and a pinch roll are inched to enable the head of the steel plate to enter the seam welder, the heads and the tails of the two steel strips are welded together, and the steel strips are enabled to enter a rear pinch roll of the welder; and 5) dust on the surface of the steel strip and trace moisture on the steel strip are removed by a high-pressure air knife purging device. The process disclosed by the invention can reduce the magnetic permeabilityof the treated stainless steel to be less than 1.002 mu, meet the requirements of customers in the electronic industry and improve the production economic benefits.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a demagnetization process for cold-rolled stainless steel strips. Background technique [0002] Stainless steel is a non-magnetic stainless steel. However, after cold rolling, part of the austenite in the SUS316L structure is transformed into martensite, making SUS316L a magnetic stainless steel with a magnetic permeability μ of 1.4 or more. When the magnetic SUS316L stainless steel is used in mobile phones and electronic products, it will have a certain impact on electromagnetic signals. Therefore, it affects the application of the material in the electronics industry. To this end, we propose a demagnetization process for cold-rolled stainless steel strips. Contents of the invention [0003] The purpose of the present invention is to provide a cold-rolled stainless steel strip demagnetization process to solve the problems raised in the above-mentioned background technol...

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Problems solved by technology

Therefore, it affects the application of the material in the electronics industry