Hot rolled silicon steel producing method
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United States of America Patent
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Nov 15, 2016
Grant Date -
Aug 27, 2015
app pub date -
Mar 29, 2012
filing date -
Mar 13, 2012
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Abstract
A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is ° C./min; t is a total heating time of the slab in the heating furnace, and t=180-240 min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is ° C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced.
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