Positioning and bonding a diamond to a stylus shank

Details Positioning and bonding a diamond to a stylus shank Positioning and bonding a diamond to a stylus shank

1984-01-12

1985-12-24

Albritton, C. L.

Electric heating

Metal heating

By arc

76DIG12, 219121LM, 228122, B23K 2602

Patent

active

045608539

ABSTRACT:
A method for positioning a diamond stone in an indented shank is described. A wetting agent put in contact with a diamond draws it upwardly into the indentation in the shank. A brazing material is added to the wetting agent to be drawn into the interface between the diamond and the shank indentation. After drying the wetting agent from the assembly, a laser beam heating the shank effects a strong, acid resistant braze of the shank and diamond. A novel brazing material in weight percent of 71% silver, 28% copper, 0.75% nickel, with 0.25 to 0.35% in the aggregate of any one or more of ruthenium, rhodium or iridium provides a strong bond with significant acid resistance.

REFERENCES:
patent: 2961750 (1960-11-01), Bender
patent: 3424890 (1969-01-01), Van Ruyven
patent: 3678568 (1972-07-01), Knippenberg et al.
patent: 3868750 (1975-03-01), Ellis et al.
patent: 4117302 (1978-09-01), Earle et al.
patent: 4205425 (1980-06-01), Shinozaki
patent: 4340954 (1982-07-01), Chio et al.

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