| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To propose a method for manufacturing a seamless steel tube blank for printing roll by which inclusions occurring streak flaw can efficiently and economically be reduced. <P>SOLUTION: When the molten steel adjusted to a chemical composition of a JIS STKM13A is secondary-refined in vacuum at the out of a converter, the degassing time is defined as≥30 min. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
