Invention Grant
- Patent Title: Electrical steel processing without a post cold-rolling intermediate anneal
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Application No.: US13739184Application Date: 2013-01-11
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Publication No.: US10240220B2Publication Date: 2019-03-26
- Inventor: Theodore E. Hill , Eric E. Gallo
- Applicant: Theodore E. Hill , Eric E. Gallo
- Applicant Address: US NC Charlotte
- Assignee: NUCOR CORPORATION
- Current Assignee: NUCOR CORPORATION
- Current Assignee Address: US NC Charlotte
- Agency: Moore & Van Allen PLLC
- Agent Jeffrey R. Gray
- Main IPC: C21D8/02
- IPC: C21D8/02 ; C21D6/00 ; C21D9/46

Abstract:
Embodiments of the present invention comprises melting scrap steel into molten steel; decarburizing the molten steel and adding alloys; transferring the steel to ladles and casting the steel into slabs; hot rolling the slabs into sheets; pickling the sheets; annealing the sheets; cold rolling the sheets; and performing one or more of tension leveling, a rough rolling, or a coating process on the sheets after cold rolling, without an intermediate annealing process between the cold rolling and the tension leveling, the rough rolling, or the coating process. The sheet is sent to the customer for stamping and customer annealing. The new process provides an electrical steel with the similar, same, or better magnetic properties than an electrical steel manufactured using the traditional processing with an intermediate annealing step after cold rolling.
Public/Granted literature
- US20130183192A1 ELECTRICAL STEEL PROCESSING WITHOUT A POST COLD-ROLLING INTERMEDIATE ANNEAL Public/Granted day:2013-07-18
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