WELDING AND ASSEMBLING METHOD OF PART ELEMENTS

摘要

PURPOSE:To minimize weld strains and to assemble part elements with good accuracy by holding a tentative assembly combined with the plural part elements with each other by means of a cage-shaped holder, bringing a pair of welding heads to the same position of the tentative assembly at the same instant from the outside of the cage-shaped holder on both sides of the prescribed vertical face and welding the assembly. CONSTITUTION:The plural part elements 1a-1f are respectively rigidly held in the tentative assembly state by means of the cage-shaped holder C. A pair of the welding heads are inserted from both outsides in this holding stage and welding is executed while said heads are simultaneously brought near to the same position of the inside tentative assembly 1. The weld strains in the blinding part are consequently balanced with each other. The deformation such as the camber owing to the weld strains arises hardly even if the assembly is taken out of the holder C after assembling of the part elements as a single structure. The single structure having the prescribed finish accuracy is thus efficiently obtd.