| 摘要 |
PROBLEM TO BE SOLVED: To provide a shell for muffler, enabling to minimization of the use of corrosive steel plates forming the inside of expensive materials thereof, having corrosiveness and durability on the inner and outer surfaces thereof, having superior functions to reduce transmission noise and prevent exhaust gas from leaking, and enabling to simplify a manufacturing process. SOLUTION: This shell for muffler comprises an inner layer member A formed with a corrosive material with respect to a corrosive component contained in exhaust gas condensed water and an outer layer member B formed with a corrosive material with respect to a corrosive component present in a running environment, continuously welded to each other to be formed into a tubular shape. The continuous welding of the inner layer member A with the outer layer member B is performed by mash seam welding, plasma welding, TIG welding, or laser welding. |
