Electric heating – Metal heating – Nonatmospheric environment at hot spot
Patent
1989-03-06
1990-05-08
Shaw, Clifford C.
Electric heating
Metal heating
Nonatmospheric environment at hot spot
148111, 219137R, B23K 904, H01F 104
Patent
active
049240528
ABSTRACT:
A method of forming continuous or spot-sequenced lines across the surface of grain oriented steel strip by spark discharge from electrodes closely spaced from said strip, characterized in that the atmosphere through which the discharge is effected is inert. Preferably the inert atmosphere is nitrogen but other gases, e.g. argon may readily be employed.
REFERENCES:
patent: 2630513 (1953-03-01), Redmond
patent: 3787657 (1974-01-01), Denis et al.
patent: 4652316 (1987-03-01), Beckley
patent: 4767469 (1988-08-01), Salsgiver et al.
T. Lyman, Editor, Metals Handbook, vol. 6, Welding & Brazing, 1971, pp. 120-121 & 123.
Beckley Philip
Snell David
British Steel PLC
Shaw Clifford C.
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