| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seizure-resistance improvement method for a die-casting die capable of self-forming resistance to seizure while casting Al ally molten metal. <P>SOLUTION: In this die-casting die comprising a steel containing 0.1-0.42% C, 0.2-2.5% Si, 0.3-2.0% Mn, 5.0-15.0% Cr, 0.8-3.0% Mo, 0.5-1.5% V and 0.025-3.0% Al, with a range for each element shown in terms of mass%, and comprising the residue Fe and inevitable impurities, a die design surface is machined, and the Al ally molten metal is cast repeatedly while supplying at least Si element to the die design surface from the outside, to thereby form a complex oxide film comprising Ai-Cr-Si-Fe. <P>COPYRIGHT: (C)2012,JPO&INPIT |
