Iron based alloy material for thixocasting process and...

Details Iron based alloy material for thixocasting process and... Iron based alloy material for thixocasting process and...

2005-03-08

2005-03-08

Yee, Deborah (Department: 1742)

Metal treatment

Stock

Ferrous

C148S323000, C148S538000, C164S120000

Reexamination Certificate

active

06863744

ABSTRACT:
An iron based alloy material for a thixocasting process and a method for casting the material which extends the service life of dies by inhibiting solidification contraction, and in which casting defects such as size variations and cracks can be inhibited. The material comprises 1.6 wt %≦C≦2.5 wt % and 3.0 wt %<Si≦5.5 wt %, and a carbon equivalent (the value of CE) defined as “C(wt %)+⅓Si(wt %)” of 2.9 to 3.5. This material is made to be in a half-melted state with 35 to 50 wt % of a solid phase to be cast under a pressure load.

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