Method of making carbide-tipped tools

Details Method of making carbide-tipped tools Method of making carbide-tipped tools

1978-06-16

1980-06-03

Simpson, Othell M.

Metal tools and implements, making

Blank or process

Saws

B23D 6300

Patent

active

042055644

ABSTRACT:
The invention provides a method of attaching carbide inserts to the tips of steel saw blades, and other tools. The manufacturing steps include (a) forming a band of discrete carbide inserts attached, in one embodiment, to a foil ribbon of brazing material, (b) holding the insert against the steel saw blade tooth, (c) heating the junction between the insert and steel to melt the brazing material, and (d) forcing the insert into a self-formed seat in the plastic steel. In some embodiments, the foil of brazing material is used primarily for holding, supporting and feeding the carbide inserts to the welding head. The brazing material is primarily vaporized by the welding heat so that little or none of it remains in the weld at the interface between the carbide inset and the steel of the saw blade. This forms a bond which has some attributes of both welding and brazing at a very strong mechanical joint.

REFERENCES:
patent: 2474643 (1949-06-01), Webb
patent: 3034378 (1962-05-01), Anderson
patent: 3295396 (1967-01-01), Kolb
patent: 3800633 (1974-04-01), Funakubo
patent: 4061057 (1977-12-01), Gray

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