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US4186172A Monolithic catalytic muffler having nondeposit welds 失效
具有非沉积焊接的单片催化消声器

Monolithic catalytic muffler having nondeposit welds
摘要:
A catalytic muffler is formed by winding together a pair of relatively thin catalytically active foils one of which is corrugated. The wound-together foils are secured together by nondeposit welding to form a rigid insert having longitudinally throughgoing gas passages. This insert is then fitted into a cylindrical housing and welded to the housing once again using a beam-type welder.
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