| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method using silver braze, which eliminates extra work for smoothing the lower surface of a base member. SOLUTION: In the welding method using silver braze, a main body 21 of a pipe member 20 is inserted into a vertical through-hole 11 of a base member 10. Molten silver braze 40 is poured from above into a gap 80, which is formed between an outer peripheral surface 23 of the main body 21 of the pipe member and a peripheral surface 14 of the vertical through-hole 11, and into a gap 70, which is formed between an upper surface 26 of a flange part 22 extending outward from the main body 21 of the pipe member 20 and a lower surface 12 of the base member 10, so that the base member 10 and the pipe member 20 are fixed. An annular groove 13 surrounding the vertical through-hole 11 is previously formed on a portion of the lower surface 12 of the base member 10 which is not superposed on the flange part 22 of the pipe member 20. COPYRIGHT: (C)2007,JPO&INPIT
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