| 摘要 |
PURPOSE:To prevent a molten brazing filler metal flowing into the gap caused on a fitting face at heating time by arranging non-combustible fiber by inserting it into the annular space of the place on which mutually engaging members are brazed and arranging a brazing filler metal on this non-combustible fiber. CONSTITUTION:In the case of joining a metal made solid member 2 by its interpolation to one end of a metal made pipe stock 1 a string like non-combustible fiber 4(alumina fiber, etc.) is inserted into the triangular annular space part 3 formed between the end part of the pipe stock 1 and the tapered part of the solid member 2. A brazing filler metal 5 is then arranged on this non-combustible fiber 4 and heated to effect brazing. At this time, the thin pipe stock 1 having smaller thermal capacity is expanded faster to increase the gap of the engaging face of both stocks 1, 2, but the non-combustible fiber 4 acts to close the gap to block the molten brazing filler metal 5 flowing into the gap. Then the solid member 2 having larger thermal capacity is later expanded to bury the gap, so the generation of a defective joining, etc., is prevented.
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