| 摘要 |
<p>PURPOSE: To eliminate T6 treatment executed after brazing by preventing the hose mounting part of rear end side from temp. rise and lowering of hardness in brazing of Al hose fitting, in which a flange for joining and short tube branch for flange/valve mounting are brazed to the tip part of short tube shape fitting main body. CONSTITUTION: In brazing a flange 2 and short tube branch 3, a copper cooling cylinder 10, in which a main body inner diameter is made to a ventillating part 11 and is slightly larger than the outer diameter of fitting main bodies 1, 1' and a tip inner diameter part is made to an engaging/closing part 12 and is reduced to the diameter to be fitted/brought into tight contact with the groove 1c of hose mounting part 1b of fitting main bodies 1, 1', is mounted on the hose mounting part 1b of fitting main bodies 1, 1'. While a compressed air A is continuously supplied from a supplying hole 13 of the tip part of cooling cylinder 10 to the inside and is injected from rear end side, the brazing is executed by heating the inner peripheral part of flange 2 and peripheral part of short tube branch 3.</p> |
