Metal fusion bonding – Process – With protecting of work or filler or applying flux
Patent
1994-01-25
1995-09-26
Ramsey, Kenneth J.
Metal fusion bonding
Process
With protecting of work or filler or applying flux
219615, 219651, 228121, B23K 1002
Patent
active
054528437
ABSTRACT:
The present system is directed to both a method and apparatus for manufacture of teeth for use in drill bits. The desired tooth is formed by a hard carbide, a protective disc placed on the end of the support, the joinder being accomplished by a braze metal layer. The process contemplates positioning the disc in a matching receptacle within the head of a molding apparatus wherein the head and cavity of the head are exposed to the terminus of several coolant flow lines through the head so that the disc is brought into contact with flowing coolant. The fluid coolant is delivered by a compressor at elevated pressure and is a flow of cooled gas after dehydration. Rapid flow of heat into cooled support at the base prevent deterioration of the diamond layer while allowing use of higher temperature braze metals.
REFERENCES:
patent: 2484613 (1949-10-01), Detuno
patent: 4156329 (1979-05-01), Daniels
patent: 4225322 (1980-09-01), Knemeyer
patent: 4319707 (1982-03-01), Knemeyer
patent: 4527998 (1985-07-01), Knemeyer
patent: 4772294 (1988-09-01), Schroeder
patent: 4838477 (1989-06-01), Roach et al.
Dennis Tool Company
Ramsey Kenneth J.
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