Metal casting surface modification by powder impregnation

Details Metal casting surface modification by powder impregnation Metal casting surface modification by powder impregnation

1992-01-21

1994-04-05

Bradley, Paula A.

Metal founding

Process

Shaping liquid metal against a forming surface

164111, 164112, B22D 1914

Patent

active

052996204

ABSTRACT:
A method for impregnating a metal product with a hard wear-resistant surface layer comprises providing a wear-resistant layer in the form of a partially sintered sheet having at least one peg formed therein; attaching the wear-resistant layer to a mold surface; and casting a metal melt so as to produce a metal product having a wear-resistant material surface layer. Preferably the mold surface is a sand core and the sheet has a hexagonal pattern molded therein so as to form a plurality of pegs.

REFERENCES:
patent: 1978319 (1934-10-01), Mowery
patent: 2874429 (1959-02-01), Emter et al.
patent: 4119459 (1978-10-01), Ekemar et al.
patent: 4587707 (1986-05-01), Nishida et al.
patent: 4646811 (1987-03-01), Morishita et al.
patent: 5027878 (1991-07-01), Revankar et al.
"Application of Cast-On Ferrochrome-Based Hard Surfacings to Polystyrene Pattern Castings", Bureau of Mines Report of Investigations 8942, U.S. Dept. of Interior (1985), Hanson et al.

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