Possesses satisfactory heatproof stress heatproof fatigue property the metal substrate null for the automobile exhaust gas catalytic converter

摘要

PURPOSE:To prevent a gap formation between a flat foil and a wavy foil of a honeycomb body generated in an outer periphery area by making soldering ratio of an inner part of the honeycomb body higher than that of outer part =1 round from the most outer circumference to =1/3 of total turn. CONSTITUTION:Metal honeycomb bodies 3 to 5 prepared by winding up laminated flat foil and wavy foil and metal outer cylinders 1, 2 to surround the honeycomb bodies are soldered to give a metal support for automotive exhaust gas treatment catalyst. In soldering metal honeycomb bodies which are soldered in whole or party, the soldering rate of an inner part 5 is made higher than that of outer regions 3, 4 including an area from =1 round to an area within 1/3 of total turn from the most outer circumference. Said soldering rate means the ratio of soldering spots to the whole contact spots of the flat plate and the wavy plate. As a result, deviation between the flat plate and the wavy plate of the honeycomb body formed in the outer circumference is prevented.