| 摘要 |
PURPOSE: A uni-directional spot-welding jig for preventing oxidation is provided to prevent the oxidation and damage of a Cr2O3(Chromium Oxide) layer by removing oxygen in a weld zone through gas supply grooves to prevent the weld zone from being exposed to oxygen. CONSTITUTION: A uni-directional spot-welding jig for preventing oxidation has a plurality of gas supply grooves(201) formed at the top thereof in order to remove existing oxygen around welding points of a side frame and a skeleton frame. A tube for supplying gas serving as a medium to be bonded with oxygen is installed in each gas supply groove.
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