Patent ID: 8288010
Filing Date: 2012-10-16
Classification: F01N,Y10T

Abstract:
1. A substantially smooth sheet-metal layer for a metallic honeycomb structure having at least one corrugated sheet-metal layer, the substantially smooth sheet-metal layer comprising: a) a high-temperature-corrosion-resistant steel body having a longitudinal direction, an upper surface, a lower surface, a thickness of 0.015 to 0.1 mm, and discontinuous microstructures having an outside and structure centers and extending in said longitudinal direction or at an acute angle relative to said longitudinal direction; b) said microstructures having a structure height, a structure length measured on said outside at half of said structure height, a structure width measured on said outside at half of said structure height, a mutual spacing formed by interruptions and measured at half of said structure height relative to a nearest microstructure aligned approximately in said longitudinal direction, and a lateral spacing measured between said structure centers relative to a nearest laterally adjacent microstructure; c) said microstructures being configured to cause some of said microstructures to project out of the sheet-metal layer with contact points toward said upper surface and some of said microstructures to project out of the sheet-metal layer with contact points toward said lower surface, permitting brazed joints to occur substantially only between said contact points and the at least one corrugated sheet-metal layer; d) said microstructures being spaced, disposed and configured to cause each straight theoretical line extending across the sheet-metal layer perpendicularly to the longitudinal direction to intersect at least two of said microstructures projecting toward said upper surface and at least two of said microstructures projecting toward said lower surface; and e) the following relationships apply: