Complaint investment casting mold and method

Details Complaint investment casting mold and method Complaint investment casting mold and method

1992-07-17

1994-03-29

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164361, B22C 102, B22C 904

Patent

active

052976157

ABSTRACT:
A high melting point and/or low ductility metal or alloy is investment cast in a refractory mold including a facecoat layer and a plurality of back-up layers wherein at least one back-up layer is a relatively weak, sacrificial layer. This latter layer is crushed as necessary as the casting cools below its ductile-to-brittle transition temperature to avoid hot tearing or cracking of the solidified metal or alloy during cooling in the mold.

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