Process of making electrical steels

Details Process of making electrical steels Process of making electrical steels

1997-07-21

1998-11-24

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148112, 148120, H01F 104

Patent

active

RE0359670

ABSTRACT:
Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having an ultra low carbon composition (less than 0.01%) to at least the following steps: hot rolling with an austenite finishing temperature, coiling at a temperature ranging from 1300.degree.-1450.degree. F., and light temper rolling (less than 1.0% reduction) or leveling; reheating at a temperature less than 2300.degree. F., hot rolling with a ferrite finishing temperature, coiling at a temperature less than 1200.degree. F., and light temper rolling or leveling; or hot rolling with a ferrite finishing temperature, coiling at a temperature ranging from 1100.degree.-1350.degree. F. without a subsequent hot band anneal, and light temper rolling or leveling.

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