Patent ID: 6068708
Filing Date: 2000-05-30
Classification: C21D,C22C

Abstract:
A method of making electrical steel strip characterized by low core loss and high permeability comprising the steps of:producing a slab having a composition consisting essentially of (% by weight):C: up to 0.02Si: 0.20-1.35Al: 0.10-0.45Mn: 0.10-1.0S: up to 0.015N: up to 0.006Sb: up to 0.07Sn: up to 0.12, andthe balance being substantially iron,hot rolling the slab into a strip with a finishing temperature in the ferrite region,coiling the strip at a temperature not greater than 1050.degree. F. such that substantially no self-annealing occurs,cold rolling the strip which has not been subjected to an annealing operation after the coiling,batch annealing the strip, andtemper rolling the strip.