| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for highly productively manufacturing high manganese-steel with high quality, wherein generation of surface defects such as a surface crack is suppressed. <P>SOLUTION: The method is for manufacturing high manganese-steel by continuous casting method. In the method, molten steel temperature T (unit: °C) in a molten steel container shortly before supplying hot water to a mold is controlled to satisfy the following formula (1) while casting speed Vc (unit: m/min) is selected within a range of the following formula (2): a≤T≤a+50 (1), Vc≥0.02×(T-a) (2). Here, a is a value determined by the following formula (3) based on the composition of the steel. (C%), etc., in the formula are respectively contents of C, etc., (unit: mass%) in the chemical composition: a=1562-ä62×(C%)+6×(Si%)+4.1×(Mn%)+1.5×(Cr%)} (3). <P>COPYRIGHT: (C)2012,JPO&INPIT |
