Al alloy composite tube for refrigerant passages and method for

Details Al alloy composite tube for refrigerant passages and method for Al alloy composite tube for refrigerant passages and method for

1998-07-23

2000-04-18

Brinson, Patrick

Pipes and tubular conduits

Distinct layers

Bonded to each other

138142, 138171, 138177, F16L 914

Patent

active

060503017

ABSTRACT:
There is disclosed an Al alloy composite tube for refrigerant passages, made by extruding, or extruding and drawing a two-layer composite pipe obtained by shrink-fit of a tubular Al alloy inner material to the inside of a tubular Al alloy core, or a three-layer composite pipe obtained by shrink-fit of the two-layer composite pipe to the inside of a tubular Al alloy outer material; and a method for producing the same. This Al alloy composite tube for refrigerant passages causes less blisters at the interface between an inner pipe and an outer pipe, and can prevent debonding of the inner pipe.

REFERENCES:
patent: 4346739 (1982-08-01), Asada
patent: 4495003 (1985-01-01), Kubo
patent: 5265793 (1993-11-01), Usui et al.
patent: 5565277 (1996-10-01), Cox, Jr. et al.
patent: 5887628 (1999-03-01), Usui

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