Method of replacing drill bit heads

Details Method of replacing drill bit heads Method of replacing drill bit heads

1987-10-08

1989-04-04

Godici, Nicholas P.

Metal fusion bonding

Process

Using dynamic frictional energy

228119, 228113, 76108A, B23K 2012

Patent

active

048178527

ABSTRACT:
A method of joining impact or cutting heads to the shanks of down-the-hole rock drilling bits utilizing inertia welding techniques wherein the interfacing portions of the heads and shanks are structured to provide appropriate flash relief areas adjacent generally planar and abutting contact surfaces of the heads and shanks so as to promote the thorough and continuous diffusion bonding of the components across the total area of such contact surfaces.

REFERENCES:
patent: 3618196 (1971-11-01), Sluetz
patent: 4074449 (1978-02-01), Lanz et al.
patent: 4323185 (1982-04-01), Grilli et al.
patent: 4333671 (1982-06-01), Holko
"The International Symposium on Friction Welding", Jul. 23, 1969, ISFN Document No. 9, pp. 9-13, Metals Handbook, vol. 6, pp. 719-728.

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