Cemented carbide tool

Details Cemented carbide tool Cemented carbide tool

1987-03-13

1988-08-16

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

047642556

ABSTRACT:
A tool or wear part comprises a cast iron or cast steel body carrying a plurality of cast-in inserts. Each insert comprises a cemented carbide cutting or wearing element partially embedded in the body, and an enclosure completely surrounding the embedded portion of the element. The enclosure is cast-in with respect to the body and has a higher melting point than the body. The enclosure is connected by a metallurgical bond to the body and by a shrink-fit to the element.

REFERENCES:
patent: 2743495 (1956-05-01), Eklund
patent: 3225400 (1965-12-01), Buschow
patent: 3693736 (1972-09-01), Gardner
patent: 3852874 (1974-12-01), Pearson
patent: 3888297 (1975-06-01), Davies
patent: 4119459 (1978-10-01), Ekemar et al.
patent: 4339009 (1982-07-01), Busby
patent: 4553615 (1985-11-01), Grainger
patent: 4584020 (1986-04-01), Waldenstrom
patent: 4627503 (1986-12-01), Horton
patent: 4676124 (1987-06-01), Fischer

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