B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
113/81
B23K 1/00 (2006.01) B23K 1/18 (2006.01)
Patent
CA 2027239
A brazing method of joining a first metal member at an end portion thereof having a predetermined length to a second metal member formed with a bore having a straight portion and a tapered portion extending from the axially outer end of the straight portion and flaring axially outward. The first member is in a position between a horizontal position and a position inclined at 45 dgrees with a horizontal plane, the posi- tion of the first member including the horizontal posi- tion but not including the inclined position at 45 degrees. The two members are joined by brazing with the end portion of the first member inserted in the bore straight portion of the second member through the tapered portion and with a brazing material placed around the first member axially outside the tapered portion. When melted for brazing, the brazing material flows axially inward as if it is drawn into the bore tapered portion of the second member around the first member end portion posi- tioned within the tapered portion, and further flows into and is retained in the bore straight portion around the first member end portion positioned in the straight portion, whereby the molten brazing material is prevented from flowing down.
Akiyoshi Hitoshi
Koga Naoyuki
Shiroyama Michio
Sukimoto Minobu
Fetherstonhaugh & Co.
Showa Aluminum Corporation
Showa Denko K.k.
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