专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH01170550A MOLD FOR CONTINUOUSLY CASTING STEEL 失效
公开(公告)号：JPH01170550A
公开(公告)日：1989-07-05
申请号：JP32820487
申请日：1987-12-24
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , MURAKAMI HIROSHI , KITAGAWA TORU
IPC分类号： B22D11/04 , B22D11/059
摘要： PURPOSE:To restrain conduction of heat during solidification of molten steel, to form uniform solidified shell and to obtain a mold for continuously casting the steel without any development of surface cracking by embedding the different kind of metal or ceramic having the prescribed range of diameter at the specific range of interval on the mold surface near meniscus of the molten steel in the Cu-made mold for continuous casting. CONSTITUTION:Round holes 13 having 2-10mmphi are opened in the range of 50-300mm from the upper end of the copper plate on the surface 22 at the molten steel side of the mold copper plate 21 (near the meniscus of the molten steel), so that mutual interval becomes 5-20mm. Then, the embedding material 14 composing of the different kinds of metals (Ni, stainless steel, etc.,) or the ceramics (BN, AlN, ZrO2, etc.,) are embedded into the plural round holes 13. Further, by using the mold having the above construction, the initial solidified shell thickness can be formed at extreme uniformity. Therefore, even if the solidification shrinkage and transformation stress at the time of the transformation of delta gamma are developed, as locally thin part of the solidified shell thickness is eliminated, the stress is not concentrated at the one point and the surface crack in the slab is not developed.

IPRDB

热门服务

关于我们

友情链接

联系方式