B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/167, 22/51
B22D 11/00 (2006.01) B22D 11/128 (2006.01)
Patent
CA 1189281
ABSTRACT OF THE DISCLOSURE The present invention relates to an improvement in the bow-type continuous-casting method and in the apparatus, the apparatus having a low height, a curved mold (6), and a multi-point straightening zone (10). The prior art involves a problem in that the straight- ening rolls (7) are not reliable due to a high load which is generated during a non-stationary casting period during which the top or bottom section of a strand (3) is conveyed through a multi-point straightening zone (10). In the present invention, at least one selected pair of straightening rolls (11) is shunted from the defined radius (Rn) of the curve by means of cone-shaped springs (23) or hydraulic cylinders so that the distance between the two pairs of straightening rolls (11) which are engaged in straightening during a non-stationary casting period is increased. In the present invention, the reliabilicy of the straightening rolls (11) is so enhanced that high-speed and moderate-cooling casting in a low-head CCM can be directly combined with hot-rolling of the strands (3).
406037
Murakami Tadashi
Soejima Zenzo
Yamaji Chihiro
Goudreau Gage Dubuc
Nippon Steel Corporation
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