Butt welding device and butt welding method

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 11/30 (2006.01) B23K 11/06 (2006.01)

Patent

CA 2494985

Of a pair of electrode members (1, 2) for butt welding two plates (31, 32), at least one electrode member (1) has an outer surface formed as a retracted shape section (1A) which gradually retracts from one plate (31) as it extends from the thickness-wise intermediate portion of the one electrode member (1) toward one plate (31) of the two plates (31, 32). The butt welding of the two plates (31, 32) is effected by offsetting the position of the butt portion (71) of these plates (31, 32) from the thickness-wise intermediate portion of the electrode members (1, 2) toward the retracted shape section (1A) by an amount (L1) corresponding to the difference in thickness between these plates (31, 32), while the butt welding of other two plates different in thickness is effected by changing the offset.

L'invention concerne une paire d'éléments électrodes (1, 2) servant à souder bout à bout deux plaques (31, 32). Au moins un élément électrode (1) comporte une surface extérieure en forme de partie rétractée (1A), ladite partie se rétractant progressivement à partir d'une plaque (31), à mesure qu'elle s'allonge à partir de la partie intermédiaire dans le sens de l'épaisseur de l'élément électrode (1) en direction d'une des deux plaques (31). Le soudage bout à bout des deux plaques (31, 32) est effectué par décalage de l'emplacement de la partie bout (71) desdites plaques (31, 32), à partir de la partie intermédiaire dans le sens de l'épaisseur des éléments électrodes (1, 2), en direction de la partie de forme rétractée (1A), selon une distance (L1) correspondant à la différence d'épaisseur entre les plaques (31, 32). Le soudage bout à bout de plaques présentant une épaisseur différente est effectué par modification du décalage.

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