Electric heating – Metal heating – For bonding with pressure
Patent
1993-09-02
1996-04-02
Evans, Geoffrey S.
Electric heating
Metal heating
For bonding with pressure
148 24, 219 8516, 219615, 22826251, B23K 100, B23K 3522
Patent
active
055042961
ABSTRACT:
In a method of hot brazing aluminum articles, the steps of: interposing an amount of a flux-containing brazing agent (12) between portions of aluminum articles (11, 11) which are to be adjoined one to another; gripping the portions with a pair of heaters (13); and then activating the heater so that heat conducted therefrom melts the brazing agent (12) to braze the aluminum articles (11), are carried out in this order. The brazing agent (12) is a compacted agent composed of a matrix powder and a flux powder, at a ratio in weight of 99.9:0.1 to 70:30, and the agent has a density corresponding to 90% or more of a theoretical value. The articles (11) may be pressed one to another towards adjoining surfaces while they are being heated by the heater (13), or the heaters (13) are slided relative to the adjoining portions so that they are heated wholly, or the adjoining articles (11, 11) are urged towards each other while the heaters (13) are being slided relative to them so as to entirely heat them, so that the brazing is carried out efficiently to manufacture brazed products which are of a higher brazing strength.
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E. Lugscheider et al. "Metallurgical Aspects Of Additive-Aided Wide-Clearance Brazing With Nickel-Based Filler Metals," Welding Journal, vol. 68, No. 1, Jan. 1989, Miami, FL, pp. 9S-13S.
Furukawa Yuichi
Iwai Ichiro
Sato Shoichi
Evans Geoffrey S.
Showa Aluminum Corporation
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