Metal fusion bonding – Process – With protecting of work or filler or applying flux
Patent
1976-04-12
1978-03-07
Smith, Al Lawrence
Metal fusion bonding
Process
With protecting of work or filler or applying flux
228263, 75171, B23K 104, B23K 112
Patent
active
040775607
ABSTRACT:
The invention relates to dental solder particularly suitable for joining parts of structural frameworks made of non-precious metal alloys, the framework being used in the preparation of bridges, crowns and the like. The solder compositions consist essentially of about 69 to 75% nickel, about 14 to 19.9% chromium, about 4 to 5.5% silicon and about 2.5 to 6% boron. The compositions may be modified to include up to about 6% molybdenum to increase corrosion resistance. The solder has a fusion temperature in the range of from about 1800.degree. to about 1950.degree. F and a diametrial tensile strength of at least 35,000 p.s.i. and a solder joint tensile strength of at least 70,000 p.s.i.
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Welding and Brazing Alcoa Aluminum, Aluminum Company of America, Pittsburgh, Pa. 1944, pp. 2-3.
Semi-Alloys, "Semi Conductor Data - Brazing and Soldering Alloys, Part II", pp. 1-4.
Lee-You James
Sung Pei
Johnson & Johnson
Ramsey K. J.
Smith Al Lawrence
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