| 摘要 |
PURPOSE:To increase brazing strength and to reduce the man-hour for working by using a rectangular hoop piece formed preliminarily by blanking to a prescribed shape as a blank material, forming the blank material into a C-shaped with the hollow groove side positioned on the inside circumferential side and brazing the wall surface of the edge wall part thereof to each other. CONSTITUTION:A metallic plate material is blanked to make the end faces on both transverse direction to parallel flat seat faces 2, 2' and a hollow recess 4 bulging to one surface side along the longitudinal direction except flat walls 3, 3' along both side ends of the respective faces 2, 2' is formed. Semi-circular grooves 6, 6' bulging to both sides along the groove 4 except the edge wall parts 5, 5' formed near the ends of the walls 3, 3' are formed to both longitudinal sides thereby forming a hoop-like blank material 1' of a rectangular shape. Such material 1' is curved to approximately a C-shape with the groove 4 side thereof positioned on the inside circumferential side to form an eye joint body 1. The mating wall faces of the parts 5, 5' are brazed 7, 7' to each other by which the eye joint is manufactured. |
