Electric heating – Metal heating – For bonding with pressure
Patent
1993-11-19
1994-12-20
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
376451, B23K 1100, G21C 310
Patent
active
053748000
ABSTRACT:
A resistance welding method for a fuel rod is presented in which the gas seal opening is closed with a sealing material of the same composition as the end plug material. The method enable to perform welding stably in a pressurized welding chamber, and the process is amenable to automation. The sealing material body is made of a wire, and is pressed against the conical shaped opening provided on the end plug. The welding method avoids contaminating the weld with undesirable impurities from the electrode material, and the welding operations is designed so that there is no need to reshape the end of the electrode or adjust the gap between the sealing material and the seal opening.
REFERENCES:
patent: 3842238 (1974-10-01), Boyko et al.
patent: 3952395 (1976-04-01), Crossman et al.
patent: 4003788 (1977-01-01), Boyko et al.
patent: 4097712 (1978-06-01), Bezold
patent: 4106171 (1978-08-01), Basiulis
patent: 5251247 (1993-10-01), Sahlin et al.
Mitsubishi Nuclear Fuel Co.
Shaw Clifford C.
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