Electric heating – Metal heating – For bonding with pressure
Patent
1985-12-11
1987-06-09
Goldberg, E. A.
Electric heating
Metal heating
For bonding with pressure
219137R, 219 99, 2191171, B23K 1100
Patent
active
046721649
ABSTRACT:
A method for joining individual pieces of material together includes the steps of heating the pieces to be welded together, at least one of which consists of a metal matrix with a relatively low melting point and a reinforcement material distributed therein, the reinforcement having a relatively high melting point. The other piece may be a similar metal matrix composite, or may be a metal or alloy which is to be joined to the first piece. The pieces are heated to a temperature which is above the melting points of the metals and below the melting point of the reinforcement. The pieces so heated are brought into contact with one another and then cooled to a temperature below the melting points of the metals. One technique for practicing the method of the invention is that of capacitor discharge welding.
REFERENCES:
patent: 3415974 (1968-12-01), Graham
patent: 3767887 (1973-10-01), Harder
Welding Handbook 7th ed. vol. 2 "Welding Processes--Arc and Gas Welding and Cutting, Brazing, and Soldering" pp. 262-275 & 282-294.
Kennedy, James R. "Fusion Welding of Titanium-Tungsten and Titanium-Graphite Composites," Welding Journal, May 1972, pp. 250-s-259-s.
Goddard, D. M. et al. "Feasibility of Brazing and Welding Aluminum-Graphite Composites," Welding Journal, Apr. 1972, pp. 178s-182s.
Gunn, Charles, "Thin-Metals Percussive Welded Without Marring or Distortion", Welding Engineer, Apr. 1961, pp. 48-49.
Ahern, et al., Fusion Welding of SiC-Reinforced Al Composites, Metal Construction, Apr. 1982, pp. 192-197.
DOD Metal Matrix Composites Information Analysis Center (MMCIAC) No. 00461, Discontinuous Silicon Carbide Reinforced Aluminum Metal Matrix Composites Data Review, Dec. 1984, pp. 10-1-10-54.
Goldberg E. A.
Oregon Graduate Center
Sigda C. M.
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