Electric heating – Metal heating – For bonding with pressure
Patent
1979-07-17
1981-06-16
Kucia, Richard R.
Electric heating
Metal heating
For bonding with pressure
219107, 219118, 428583, 428934, B23K 1120
Patent
active
042739837
ABSTRACT:
An improved method for resistance welding two metallic articles, made of dissimilar metals which form brittle intermetallic compounds when melted together. A first one of the metallic articles is provided with a tapered, flat-topped projection which is pressed against the other metallic article. The first article preferably is composed of the metal most difficult to melt, as determined by the four parameters of melting point, electrical resistance, heat conductivity and specific heat. The projection is formed with a predetermined relation between height, top width, and angle of taper such that a preselected extremely high welding current passed for a very short time will establish a maximum temperature near the top of the projection sufficient to melt the contacting surfaces of the two metallic articles and a temperature gradient such that an intermediate portion of the projection becomes markedly plastic while the adjacent base portion of the projection remains undeformable under extremely high welding pressure. Impurities and intermetallic compounds in the molten metal at the top of the projection are squeezed out to the periphery of the surfaces to be welded, and the weld joint is made between plastic but unmelted metal of the projection and the other article.
REFERENCES:
patent: 651597 (1900-06-01), Eyre
patent: 910434 (1909-01-01), Thompson
patent: 2127685 (1938-08-01), Greulich
patent: 3089021 (1963-05-01), Hawes
patent: 3435183 (1969-03-01), Vagi
patent: 3436806 (1969-04-01), Supan
patent: 3476905 (1969-11-01), Larsen
patent: 3598952 (1971-08-01), Roberson
patent: 3760143 (1973-09-01), Rondeau
patent: 3816701 (1974-06-01), Stormer
Mizobe Tugio
Ogawa Masahiro
Kucia Richard R.
Toyota Jidosha Kogyo Kabushiki Kaisha
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