Process for the production of a honeycomb body from two differently constructed kinds of sheet metal layers

摘要

A process for the production of a honeycomb body, preferably a catalyst carrier body, from two differently constructed kinds of high temperature corrosion-resistant sheet metal layers which are wound and/or stacked in a layer-wise manner and which at least partially have a structure for forming passages through which a fluid can flow. A portion of the sheet metal layers is formed of a substantially homogenous steel containing at least chromium and aluminum. Another portion of the sheet metal layers has a layered construction with at least a first layer of chromium-containing steel and at least a second layer substantially containing aluminum. The sheet metal layers are connected together by a heat treatment, wherein the sheet metal layers of layered construction are homogenized by diffusion. The use of differently constructed kinds of sheet metal layers provides for a good connection between the sheet metal layers in spite of a possible reduction in volume of the sheet metal layers of layered construction in the heat treatment.