| 简介 |
PROBLEM TO BE SOLVED : To provide an improved welding method.
SOLUTION : The present invention, as disclosed herein, generally relates to an improved method of a welding field using a longer distance contact-workpiece longer than one recommended in relation to a shield gas flow rate reduced effectively at a step of adding at least one porosity reducing agent between 0.25 to 10 parts to an electrode composition containing a fluoride lime-based slag, the at least one porosity reducing agent selecting from (a) or (b) and containing the combinations (a) and (b) : (a) one metal nitride forming agent substituting an Li compound, when Al does not exist in at least one metal nitride forming agent in addition to at least one metal nitride forming agent containing an alloy mixing at least one metal alloy or a specific metal out of metals selected from a group consisting of Ti, Zr, Ca, Ba, and Al; and (b) a group consisting of at least one rare earth metal selected from a group composed of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, and Y.
SELECTED DRAWING : None
COPYRIGHT : (C)2017, JPO&INPIT |
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