Method for manufacturing an exhaust manifold

Details Method for manufacturing an exhaust manifold Method for manufacturing an exhaust manifold

B - Operations, Transporting

21

D

26/151, 123/250

B21D 53/84 (2006.01) F01N 13/10 (2010.01) F01N 13/18 (2010.01) B21D 53/88 (2006.01)

Patent

CA 1292116

ABSTRACT A process is provided for manufacturing an exhaust manifold. The manifold comprises at least one stamp formed inlet flange, a stamp formed sheet metal inner shell and a stamp formed sheet metal outer shell. The inner shell and outer shell are configured to define an exhaust chamber there- between. Each inlet flange is stamp formed to define at least one exhaust port extending entirely therethrough, with each exhaust port including a stamp formed projection extending continuously thereabout from one surface of the inlet flange. The inner shell is stamp formed to define an inlet aperture for each exhaust port. The inner shell is projection welded to the inlet flange such that the projections stamp formed therein define the weldments. The outer shell then is welded to the inner shell to define the exhaust chamber of the mani- fold. An outlet tube may be secured to an outlet aperture of the outer shell.

542776

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