| 摘要 |
<p>PURPOSE:To secure the necessary treating depth in the min. limit in a remelting treatment method. CONSTITUTION:At the time of shifting a TIG arc by reforming a recessed part 5 having the necessary treating depth in the min. limit or the depth shallower than the above depth at a position 7 which needs the deep treating depth on the surface layer to be treated in the position forming the recessed part 5, the TIG arc is approached to the surface to be treated at the position nearer than the other position. In the case of being the same input heat quantity, the penetration volume is constant, and therefore, the recessed part 5 is arranged in the position to be treated and the treatment is executed by bringing the torch 1 close to the recessed part at the position to be treated nearer than the other position, in which the recessed part 5 does not exist. By this method, the penetration volume having the same volume of the recessed part 5 is intruded downward at the recessed part 5 to increase the penetration depth, and the depth as the standard value can be secured.</p> |
