Abstract: A cylindrical metallic structure for improving catalysis used for rapid activating a catalyst converter comprises a hollow cylindrical shell and an elongate metallic substrate with a flat sheet and a corrugated sheet. Particularly, said elongate metallic substrate is superimposed and rolled up to form a single layer of corrugation structure and a supporting portion, wherein said supporting portion having an upper edge and a lower edge for supporting said single layer of corrugation structure. And said single layer of corrugation structure is located around said supporting portion and contacting with said upper edge and said lower edge. Then, put it into a hollow cylindrical shell for forming said cylindrical metallic structure. This invention is provided for increasing catalyzing area of said metallic structure, and further for improving catalysis of catalyst converters.

Abstract: The present invention provides a structure and a method for improving metal honeycomb core body of catalyst converters, which is composed of an elongate matrix having a flat sheet and a corrugated sheet. Said flat sheet and said corrugated sheet are superimposed and rolled up to form a central heat-resistant structure and a honeycomb structure for improving metal honeycomb core body of catalyst converters. Wherein said central heat-resistant structure having a specific diameter substantially larger than 10 mm for forming at least a diffusion channel to increase the exhausting gas flowing through and decrease the temperature therein; and said honeycomb structure surrounding said central heat-resistant structure for catalytic reaction. Due to the catalytic reaction area of said diffusion channel is very small, it reduces the efficiency of reaction in the center portion of the metal honeycomb core body of catalyst converter, and it further reduces temperature increasing by its exothermic reaction.