Process for hot working continuous-cast bloom and steel ingot
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United States of America Patent
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Feb 27, 1996
Grant Date -
N/A
app pub date -
Sep 9, 1993
filing date -
Sep 9, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for hot working a continuous-cast bloom or a steel ingot, the process comprising the steps of: (1) cooling a bloom produced by continuous casting or a steel ingot produced with a mold to bring the surface temperature thereof to 50.degree. to 150.degree. C. higher than the Ar.sub.3 transformation point thereof; (2) quenching the bloom or the steel ingot in such a way that its interior remains red hot while the surface is transformed to have a bainite structure; and (3) heating the bloom or the steel ingot in a furnace followed by hot shaping.
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