Electric heating – Metal heating – Nonatmospheric environment at hot spot
Patent
1998-03-20
2000-11-28
Ryan, Patrick
Electric heating
Metal heating
Nonatmospheric environment at hot spot
21914652, B23K 1306
Patent
active
061538477
ABSTRACT:
A water-repellent film is applied on to the surface of a welding member such as of a welding backing member disposed backside a joint defined between two mating welding bevels, a welding bevel of a base member to be welded, and a coated welding rod formed by coating a metallic core wire with a flux. The water-repellent film is formed of a hydrophobic material having a contact angle of 90.degree. or above and providing minute concavities and convexities. In a highly humid environment, during rainfall or in water, welding can be effected without weld defects such as blow holes, cracks and the like.
REFERENCES:
patent: 3662144 (1972-05-01), DeHaeck
patent: 4335755 (1982-06-01), Sadler et al.
patent: 5032641 (1991-07-01), Nanishi et al.
patent: 5225661 (1993-07-01), Chai et al.
Fukuda Kazuhiro
Inaba Toshikazu
Iwasaki Toru
Komori Mitsuru
Matsumoto Yoshiaki
Elve M. Alexandra
Mitsui Engineering & Shipbuilding Company
Ryan Patrick
LandOfFree
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