Patent
Mag-pulse arc welding method for galvanized steel sheet
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TLDR
In this paper, the welding voltage is set so as to be in the range of 7 to 1.0 to cause droplet transfer due to a short circuit during the base current period, and the galvanized steel sheet is subjected to mag pulse arc welding.Abstract:
(57) [Summary] [Purpose] It is possible to extremely reduce the occurrence of pore defects such as pits and blowholes, and it is also possible to obtain a good appearance with no bead dripping even in difficult position welding such as vertical welding or horizontal welding. Make it possible to obtain weld beads. [Composition] When performing galvanized arc welding of a galvanized steel sheet, C: 0.02 to 0.10 wt%, Si: 0.3 0.7 wt% and Mn: 1.5 to 3.0 wt% and solid wire for galvanized steel welding which comprises, as a basic alloy components, consists of a mixture of Ar gas and CO 2 gas CO 2 A shield gas having a gas mixture ratio of 5 to 10% by volume is used, a peak current value is 450 to 600 A, a peak current period is 1.0 to 2.0 ms, and a value of a short circuit migration rate r is r = 0. The welding voltage is set so as to be in the range of 7 to 1.0 to cause droplet transfer due to a short circuit during the base current period, and the galvanized steel sheet is subjected to mag pulse arc welding.read more
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