| 摘要 |
PROBLEM TO BE SOLVED: To dispense with a process to coat flux to a groove and to impart deep penetration into a body to be welded by filling the flux consisting of a specified ratio of SiO2 and Cr2O3 in a wire at a specified ratio. SOLUTION: The flux to be filled in a flux cored wire is set to 5-25% wt.% for a wire total weight, preferably, 10-20 wt.%. The flux mixed at a ratio of 20-80% Cr2O3 and 20-80% SiO2 is used. TIG welding is performed to a stainless steel with using the flux cored wire. The flux cored wire is formed so that a plate like wire is bent in a round with butting its both side ends in the width direction over a whole region in the longitudinal direction, the flux is wrapped in its inside, the space formed inside is compressed, drawing is performed thereto so as to have an uniform wire diameter over a whole length.
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