Sprayed metal dies

Details Sprayed metal dies Sprayed metal dies

1991-05-24

1992-01-14

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Die

B21K 520, B21D 3720, B22C 700

Patent

active

050799746

ABSTRACT:
A method for forming a sprayed metal die comprising the steps of first building a positive pattern of the die. Then, there is the step of spraying a first metal, having a first melting temperature, onto the pattern to form a first metal substrate. Next, there is the step of separating the pattern from the first metal substrate. Next, there is the step of spraying a second metal, having a second melting temperature higher than the first melting temperature, onto the first metal substrate to form a second metal substrate which bonds to the first metal substrate to resist shrinkage due to residual stress within the second metal substrate. Next, there is the step of heating the first and second substrates to a temperature higher than the first melting temperature, yet lower than the second melting temperature, to melt away the first metal substrate from the second metal substrate.

REFERENCES:
patent: 2944338 (1960-07-01), Craig
patent: 3533271 (1970-10-01), Walkey et al.
patent: 4231982 (1980-11-01), Jansson

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