| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of fractures in steel strips which are liable to occur when tab plates are separated after welding, in the butt welding of the stainless steel strips using the tab plates. SOLUTION: The tab plates (2) (2) are made to touch both sides of the steel strips, with the butting section (T) of the ends of the stainless steel strips (1) placed between the tab plates. In tungsten inert gas (TIG) arc welding for forming a butt joint by letting an arc scan along the butting section, the tab plate (2) is made of thin plate of carbon steel containing 0.12 wt.% or less carbon, with one of the tab plates being made to be an arc ignition face and the other tab plate being made to be an arc extinction face. Marks of scission caused after separating the tab plate (2) (by bending) are burrs (D<SB>A</SB>) which cause no fracture (D<SB>B</SB>). Since the burrs (D<SB>A</SB>) can be easily removed by a grinder, the steel strips (1) have no irregularities of width so that uniform strip width is secured over the whole length. COPYRIGHT: (C)2004,JPO
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