发明授权
- 专利标题: Vacuum die casting of amorphous alloys
- 专利标题(中): 真空压铸非晶合金
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申请号: US12347申请日: 1998-01-23
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公开(公告)号: US6021840A公开(公告)日: 2000-02-08
- 发明人: Gregory N. Colvin
- 申请人: Gregory N. Colvin
- 申请人地址: MI Whitehall
- 专利权人: Howmet Research Corporation
- 当前专利权人: Howmet Research Corporation
- 当前专利权人地址: MI Whitehall
- 主分类号: B22D17/10
- IPC分类号: B22D17/10 ; B22D17/14 ; B22D17/20 ; B22D17/04
摘要:
A method for die casting an amorphous metal or alloy using high vacuum die casting machine and die casting parameters effective to produce three dimensional net shape die cast components that retain at least 50 volume % or more amorphous phase in the die cast microstructure. The die cavity is evacuated to a vacuum level of less than 1000 microns through the shot sleeve, a superheated molten amorphous zirconium-copper-nickel-berylium alloy is introduced into the shot sleeve, the plunger is advanced at speeds in the range of 5 inches/second to 500 inches/second to force the molten metal or alloy into a sealed, evacuated die cavity where at least the outer surface or shell of the die cast component can solidify before opening of the dies to break the vacuum seal(s) and expose the cast component to ambient air atmosphere. The die component is removed from the opended dies and quenched in a quenchant medium, such as water, to produce a die cast microstructure including at least 50 volume % amorphous phase.
公开/授权文献
- USD353471S Window component extrusion 公开/授权日:1994-12-13
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