Process for producing a core wire for welding electrodes,...

Details Process for producing a core wire for welding electrodes,... Process for producing a core wire for welding electrodes,...

B - Operations, Transporting

23

K

B23K 35/10 (2006.01) B23K 35/02 (2006.01) B23K 35/40 (2006.01)

Patent

CA 2225934

In a process for producing a core wire for welding electrodes based on iron, nickel, cobalt, copper and/or aluminum, a filler or solid wire of the same or different chemical composition as the core wire is sheathed at least once. In addition, two or more metal bands laid on upon the other are formed into a gutter-like blank of approximately arcuate cross-section, filled with a powder and cross-sectionally closed. In a different embodiment, one metal band is formed into a gutter-like blank of arcuate cross-section and a filler wire or metal wire are laid therein, after which this blank is cross-sectionally closed. The surfaces of the wires and/or the bands forming the core wire are subsequently treated thermally or chemically.

L'invention concerne un procédé de fabrication d'un fil d'âme pour électrodes de soudage, à base de fer, de nickel, de cobalt, de cuivre et/ou d'aluminium, dans lequel un fil-électrode fourré ou un fil plein de composition chimique identique à celle du fil d'âme ou différente est pourvu d'au moins une gaine simple. En outre, au moins deux bandes métalliques superposées sont façonnées en une ébauche en forme de gouttière de section transversale partiellement circulaire qui est ensuite remplie d'une poudre et dont les bords sont joints. Dans une autre version, une bande métallique est façonnée en une ébauche ayant la forme d'une gouttière de section partiellement circulaire et on y dépose un fil-électrode fourré ou un fil métallique. Ensuite, on joint les bords de cette ébauche. Les surfaces des bandes et/ou les fils constituant l'âme subissent un traitement thermique ou chimique ultérieur.

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