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US 5,657,814 AGranted
Direct rolling method for continuously cast slabs and apparatus thereof
AssigneeSumitomo Metal Industries, Ltd.
InventorsYasuhiro Maebara, Tadao Ebukuro
Life of this patent
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Abstract
A direct rolling method and apparatus for a continuously cast slab of steel includes carrying out preliminary rolling of a continuously cast steel slab with a surface temperature of the slab in the range of 900.degree.-1200.degree. C. at a strain rate of 10.sup.-3 to 1 sec.sup.-1 with a total reduction of greater than 5% and at most 20%. The slab is then subjected to hot rolling after the preliminary rolling.
Claims6
A direct rolling method for a continuously cast slab of steel comprising:
- carrying out preliminary rolling of a continuously cast steel slab with a surface temperature of the slab in the range of 900.degree.-1200.degree. C. at a strain rate of 10.sup.-3 to 10.sup.0 sec.sup.-1 with a total reduction of greater than 5% and at most 20%;
- and
- hot rolling the slab after the preliminary rolling with a holding time of less than one minute between the preliminary rolling and the hot rolling.
Dependencies are inferred from the claim text.