B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/00 (2006.01) F01N 13/08 (2010.01) B21C 37/08 (2006.01) B21C 37/15 (2006.01) B23K 9/02 (2006.01) B23K 33/00 (2006.01) F16L 9/18 (2006.01) F01N 13/14 (2010.01)
Patent
CA 2328804
In manufacturing an exhaust pipe of two-passage construction, a metallic plate having a first end and a second end respectively elongated in a longitudinal direction of the exhaust pipe is prepared. The metallic plate is bent into a substantially S shape in cross section. It has a diametrically extending central partition plate (6) and a substantially semicircular peripheral wall (7) on each lateral side of said partition plate (6) in such a manner that a groove (14) of substantially V shape in cross section having a substantially closed end on a radially inner side and an open end on a radially outer side is formed at each diametrically outer portion of the partition plate (6). A target (13) is provided so as to elongate along the groove (14) in a manner to extend substantially radially outward from the closed end. A welding arc is generated between the target (13) and a welding gun (15) disposed on a side of the open end such that the substantially closed end and the target (13) are welded together.
Eguchi Yoshihiko
Hosoda Fumio
Ishii Kazuo
Munemura Takeshi
Sasagase Takeshi
Honda Giken Kogyo Kabushiki Kaisha
Kabushiki Kaisha Yutaka Giken
Marks & Clerk
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