发明名称 |
CASTING MOLD FOR CONTINUOUS CASTING AND CONTINUOUS CASTING METHOD OF STEEL |
摘要 |
PROBLEM TO BE SOLVED: To provide a casting mold for continuous casting which can prevent surface cracking of a cast metal due to uneven cooling of solidification shell at the initial solidification and uneven solidification shell thickness caused by transformation from δ iron to γ iron in medium carbon steel accompanied by a peritectic reaction and whose life can be prevented from deteriorating due to the surface cracking of the casting mold.SOLUTION: A plurality of recessed grooves 2 are provided in the range in an inner wall surface from an arbitrary position higher than a meniscus to a position lower by 20 mm or more than the meniscus. Metal of which the heat conductivity is 30% or less with respect to the heat conductivity of copper is filled into the recessed grooves 2 and low heat conduction metal filling parts 3 are formed. The filling thickness H(mm) of metal satisfies the following expression (1) and the proportion &eegr;(mm/mm) of the sum of boundary length C(mm) between the low heat conduction metal filling parts 3 and copper with respect to area A(mm) of the inner wall surface corresponding to the range in which the low heat conduction metal filling parts 3 is formed satisfies the following expression (2): 0.5≤H≤5.0(1), 0.05≤&eegr;≤0.4(2). |
申请公布号 |
JP2015107522(A) |
申请公布日期 |
2015.06.11 |
申请号 |
JP20140208597 |
申请日期 |
2014.10.10 |
申请人 |
JFE STEEL CORP |
发明人 |
NABESHIMA SEIJI;IWATA NAOMICHI;TSUTSUMI KOICHI;ARAMAKI NORICHIKA;MIKI YUJI |
分类号 |
B22D11/04;B22D11/059;B22D11/20 |
主分类号 |
B22D11/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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