Production of non-directional cold-rolling silicon steel disc

Abstract

Production of non-orientated cold-rolling silicon steel sheet is carried out hot milling, conventionally treating, acid washing, primary cold rolling, intermediate annealing, secondary cold rolling and product annealing. It costs low and has better quality, and it can decrease rolling force and has less harmful elements. It can be used to produce medium and small electric motor.

Description

technical field

[0001] The invention relates to metallurgical technology, in particular to the production technology of cold-rolled silicon steel, in particular to a production method of non-oriented cold-rolled silicon steel sheet. Background technique

[0002] Silicon steel sheet or silicon steel strip is an extremely low-carbon steel plate with a silicon mass fraction of 0.5 to 5%, mainly used in the motor industry (the silicon mass fraction is normally below 2.5%; the thickness is generally 0.5MM) and the transformer industry (silicon mass fraction The fraction is normally below 2.5% to 5%; the thickness is generally 0.35MM). The development of silicon steel has gone through three main stages: hot-rolled silicon steel, cold-rolled silicon steel, and high magnetic induction oriented silicon steel.

[0003] In 1903, the United States and Germany first produced hot-rolled silicon steel sheets, and the American Armco Steel Company began to produce cold-rolled silicon steel ...