Process for the fabrication of metal-made carrier body for exhau

Details Process for the fabrication of metal-made carrier body for exhau Process for the fabrication of metal-made carrier body for exhau

1990-03-19

1991-09-24

Heinrich, Sam

Metal fusion bonding

Process

Plural joints

228190, 228254, 228258, 2281736, C23C 900, B23K 1008, B23K10102

Patent

active

050507907

ABSTRACT:
A metal-made carrier body is fabricated for an exhaust gas cleaning catalyst. At least one sheet-like metal band and at least one corrugated metal band, each of said bands being made of a thin metal sheet, are superposed one over the other so as to establish contacts therebetween, thereby forming a multi-layered composite body defining a number of network-patterned gas flow passages along the central axis thereof. The composite body is dipped in an electroless plating bath capable of forming a brazing coating layer on the composite body so as to form a brazing coating layer at least in the vicinity of each contact except for the contact itself. The composite body is then subjected to a heat treatment so as to braze the contacts between the sheet-like metal band and corrugated metal band. Before dipping the composite body in the plating bath, it may optionally be enclosed in a cylindrical metal casing. The composite body and cylindrical metal casing are also brazed together at their mutual contacts.

REFERENCES:
patent: 3129502 (1964-04-01), Olson
patent: 3208131 (1965-09-01), Ruff et al.
patent: 3844027 (1974-10-01), Hagen et al.
patent: 3891784 (1975-06-01), Allardyce et al.
patent: 3948431 (1976-04-01), Niimi et al.
patent: 4053969 (1977-10-01), Bayard
patent: 4059217 (1977-11-01), Woodward
patent: 4477012 (1984-10-01), Holland et al.

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