Welding member and welding method

Details Welding member and welding method Welding member and welding method

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.

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