Process for the production of a honeycomb body from two differen

Details Process for the production of a honeycomb body from two differen Process for the production of a honeycomb body from two differen

1998-02-23

2000-08-01

Heinrich, Samuel M.

Metal fusion bonding

Process

Plural joints

228190, 228194, B23K 2000, B23K10102

Patent

active

06095406&

ABSTRACT:
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.

REFERENCES:
patent: 4838067 (1989-06-01), Cornelison
patent: 5346675 (1994-09-01), Usui et al.
patent: 5366139 (1994-11-01), Jha et al.
patent: 5447698 (1995-09-01), Jha et al.
International Publication No. WO 89/07488 (Maus et al.), dated Aug. 24, 1989.

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