Cutting bit mount having carbide inserts and method for mounting

Details Cutting bit mount having carbide inserts and method for mounting Cutting bit mount having carbide inserts and method for mounting

1992-08-03

1993-10-12

Bagnell, David J.

Mining or in situ disintegration of hard material

Miscellaneous

175435, 228255, E21B 1056, B23K 3102

Patent

active

052519643

ABSTRACT:
The forward surface of a bit mount against which the shoulder of a cutting bit can rotatably bear has carbide inserts brazed therein to reduce wear of the forward surface. In the manufacture thereof, there are insert holes in the forward surface into which the carbide inserts are inserted. There are smaller holes next to the insert holes, and overlapping therewith, into which braze slugs are inserted. There is an interference fit between the carbide inserts and the braze slugs, which aids in retaining the carbide inserts in the insert holes during the brazing operation.

REFERENCES:
patent: 3397013 (1968-08-01), Krekler
patent: 3512838 (1970-05-01), Kniff
patent: 4453605 (1984-06-01), Short, Jr.
patent: 4877096 (1989-10-01), Tibbitts
patent: 4932723 (1990-06-01), Mills
patent: 5201569 (1993-04-01), Jadke

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