Method of manufacturing high pressure fluid supply pipe

Details Method of manufacturing high pressure fluid supply pipe Method of manufacturing high pressure fluid supply pipe

1990-08-10

1992-07-21

Rowan, Kurt

Metal fusion bonding

Process

Encasing a rodlike core within a substantially coextensive...

228127, B23K 3100

Patent

active

051315831

ABSTRACT:
A method of manufacturing a high pressure fluid supply pipe of a double pipe structure in which an outer pipe is tightly fit over the outer circumference of an inner pipe, wherein the method comprises a step of forming a double pipe by tightly fitting an inner pipe with an outer pipe having a thermal expansion coefficient greater than that of the inner pipe while putting a brazing material therebetween, and a step of subjecting the double pipe to a heat treatment and then to a gradual cooling treatment to join and tightly fit the inner pipe and the outer pipe integrally to each other, thereby providing at least the inner surface of the inner pipe with a compressive residual stress. The resistance to high inner pressure can be improved and destructive strength, in particular, fatigue resistance to the repeated inner pressure can remarkably be improved.

REFERENCES:
patent: 930927 (1909-08-01), Berkstresser
patent: 2371348 (1945-03-01), Murray
patent: 3064344 (1962-11-01), Arne
patent: 3101531 (1963-08-01), Roseberry
patent: 3762032 (1973-10-01), Bowling et al.
patent: 4028785 (1977-06-01), Jackson
patent: 4598857 (1986-07-01), Matsui
patent: 4694864 (1987-09-01), Libin
patent: 4784311 (1988-11-01), Sugao
Machinery's Handbook, Twenty-first Edition, first printing 1979, Industrial Press, Inc. Properties of Metals, p. 2270.

Affiliated with

Also associated with

Rating

Method of manufacturing high pressure fluid supply pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing high pressure fluid supply pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing high pressure fluid supply pipe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-838470