Method of processing sealing surface of casting and grindstone s

Details Method of processing sealing surface of casting and grindstone s Method of processing sealing surface of casting and grindstone s

1998-01-02

1999-12-07

Scherbel, David A.

Abrading

Abrading process

451 41, 451548, B24B 100

Patent

active

05997382&

ABSTRACT:
In a method of processing a sealing surface of a casting to eliminate casting defects on or in the vicinity of the sealing surface, each of abrasive grains constituting a grindstone has a flat face formed on its distal end. The sealing surface of the casting is ground by the grindstone while the flat face of each abrasive grain is held parallel to the sealing surface of the casting. Consequently, a plastic flow layer is formed on the sealing surface of the casting. Blowholes present within a predetermined range of depth of the casting from the sealing surface are collapsed as the result of formation of the plastic flow layer.

REFERENCES:
patent: 1286379 (1918-12-01), Mathias
patent: 3606785 (1971-09-01), Olsson
patent: 3954514 (1976-05-01), Webster et al.
patent: 4250610 (1981-02-01), Wilbers et al.
patent: 5311655 (1994-05-01), Jager et al.
patent: 5442847 (1995-08-01), Semiatin et al.
patent: 5443201 (1995-08-01), Cartry
patent: 5578099 (1996-11-01), Neff
Derwent Abstracts, Accession No. 81-86020D/198147, JP 56-128635, Oct. 8, 1981.

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