HEAT RESISTANT STRUCTURE AND METHOD OF MANUFACTURE THEREOF

Title:

HEAT RESISTANT STRUCTURE AND METHOD OF MANUFACTURE THEREOF

Document Type and Number:

WIPO Patent Application WO/1991/001876

Kind Code:

A1

Abstract:

This invention relates to a heat resistant structure used in an atmosphere of high temperature, for example, a catalytic converter for purifying exhausted gas from an automobile engine and the like, to which catalyst as a carrier is stuck, and also relates to a method of manufacture thereof. The structure (1) is composed of stainless steel corrugated sheets (2) and flat sheets (4) which are alternately joined to each other through the brazing material (3), (7), and (8) so as to form a honeycomb structure of a roll-like or laminated block type. This invention can easily eliminate such problems as segregation of Cr, stress corrosion cracking, grain attack cracking grain separation and cracks, that is to say, insufficient resistance to acidification and low durability, which are liable to occur in the vicinity of the joint surfaces of the sheets when used in the high temperature atmosphere, and have hitherto been desired to be solved. Technical characteristics of the structure (1) of the invention reside in the use of Ni group brazing material including Si and B, distribution of a certain fixed quantity of general Ni group brazing material to required parts, or the use of Fe group brazing material.

Inventors:

TOYODA TETSURO (JP)
MATSUOKA KATSUNORI (JP)

Application Number:

PCT/JP1990/000969

Publication Date:

February 21, 1991

Filing Date:

July 30, 1990

Export Citation:

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Assignee:

SHOWA AIRCRAFT IND (JP)

International Classes:

B21D47/00; B32B3/12; F01N3/28; (IPC1-7): B21D47/00; B32B3/12; B32B3/28

Foreign References:

JPH06448666A
JPH06448667A
JPH06448671A
JPH06448696A
JPS63299875A	1988-12-07

Other References: