Six-roller five-rack cold continuous rolling one-time cold rolling process for common oriented silicon steel

Abstract

The invention discloses a six-roller five-rack cold continuous rolling one-time cold rolling process for common oriented silicon steel. According to the process, one-time cold rolling of the common oriented silicon steel can also be conducted in a pickling rolling mill combined unit, by means of the process, a hot rolling raw material coil is completed in the pickling rolling mill combined unit, and the hot rolling raw material coil comprises the following components of 0.025wt% to 0.045wt% of C; 3.00wt% to 3.30wt% of Si; 0.15wt% to 0.25wt% of Mn; less than or equal to 0.025wt% of P; 0.004wt% to 0.015wt% of S; 0.010wt% to 0.025wt% of Als; 0.0070wt% to 0.0115wt% of N; 0.45wt% to 0.55wt% of Cu; less than or equal to 0.020wt% of Ti; and the balance Fe and inevitable impurities. According to the process, a compatible function of the pickling rolling mill combined unit is fully exerted, raw materials do not need to be preheated through steam before being uncoiled on line, electromagnetic induction heating is not adopted before the materials enter a rolling mill, investment is saved, and the requirement for research, development and production of cold-rolled common oriented silicon steel is met; and due to continuous rolling, the production efficiency is improved, the yield is improved, and the cost is reduced.

Description

technical field [0001] The invention belongs to the rolling process technology of oriented silicon steel, in particular to a primary cold rolling process of six-roller five-stand cold continuous rolling of ordinary oriented silicon steel. Background technique [0002] Oriented silicon steel strip is a new type of functional magnetic material. Because of its high resistance, the electric energy consumed on the iron core is small during operation; because its magnetization has strong directionality, the magnetic field in the desired direction High sensitivity, high utilization rate of iron core, high operating efficiency, oriented silicon steel belt is the most critical and important iron core material in electromagnetic directional conversion products such as transformers and transformers. Grain-oriented silicon steel is mainly divided into ordinary grain-oriented silicon steel and high magnetic induction grain-oriented silicon steel. The production process of grain-oriented...

AI Technical Summary

Problems solved by technology

[0010] 4. Si: Si has no inhibitory effect, but the addition of silicon can significantly increase the resistivity of steel, reduce eddy current loss, and increase magnetic permeability

[0013] 7. Ti: TiC and TiN can be used as inhibitors, but too much titanium will reduce the amount of AlN precipitation and reduce the magnetic properties.