Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device

Abstract

A holed sheet metal with multiple holes most suitable for forming a spaced body with a net-like cross section as a part for exhaust emission control device, a method of manufacturing the sheet metal, a part for exhaust emission control device using the sheet metal, and a method of manufacturing the part, wherein a plurality of holes ( 3 ) are formed in a long flat-like sheet metal ( 2 ) to form the finned sheet metal ( 1 ), and die holes ( 3 ) in the finned sheet metal ( 1 ) are formed by bending fins ( 8 ) from the sheet metal ( 2 ) in the direction of one surface side of the sheet metal, whereby the sheet metal can be easily provided at a low cost.

1 . A finned multi-aperture sheet metal in which a plurality of holes is formed in a long flat band-like sheet metal, wherein each of the holes is formed by bending a fin toward one surface side from the sheet metal, wherein a space body that is formed by spirally winding the finned multi-aperture sheet metal has a net-like cross section inserted in a casing.  
   
   
       2 . A finned multi-aperture sheet metal in which a plurality of holes is formed in a long flat band-like sheet metal, wherein each of the holes is formed by bending a fin toward any one of surface sides from the sheet metal, wherein a space body that is formed by spirally winding the finned multi-aperture sheet metal has a net-like cross section inserted in a casing.