| 摘要 |
PROBLEM TO BE SOLVED: To provide a die for die-casting which securely prevents a broken chip from mixing into a cavity. SOLUTION: A gap 70 in a radial direction is arranged between an outer circumferential surface of an injection sleeve 30 and an inner circumferential surface of a through-hole 11a of a fixed die 10. Accordingly, thermal insulation is maintained between the injection sleeve 30 and the fixed die 10, and heat transfer from the injection sleeve 30 to the fixed die 10 is prevented, so that a melt inside the injection sleeve 30 is prevented from being solidified. COPYRIGHT: (C)2010,JPO&INPIT |
