METHOD OF PRODUCING METAL TUBULAR MEMBER

Title:

METHOD OF PRODUCING METAL TUBULAR MEMBER

Document Type and Number:

WIPO Patent Application WO/2005/115683

Kind Code:

A1

Abstract:

A method of producing a metal tubular member that is composed of two or more tube forming bodies and has at least one portion at which the tube forming bodies are superposed on each other, wherein one open annular end section of one of the tube forming bodies, which one annular end section is positioned on the inner side in the superposed section, and the other open annular end section of the other tube forming body, which the other annular end section is positioned on the outer side, are integrally joined by welding. The one annular end section is inserted into the other annular end section with the outside diameter of the one annular end section pressed by a die so as to be smaller in diameter than the inside diameter of the other annular end section, and then pressing force applied to the one annular end section on the inner side is released to cause it to be in tight contact with the inner surface of the other annular end section on the outer side.

Inventors:

NAKANO HIDENORI (JP)

Application Number:

PCT/JP2005/009670

Publication Date:

December 08, 2005

Filing Date:

May 26, 2005

Export Citation:

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Assignee:

SANGO CO LTD (JP)
NAKANO HIDENORI (JP)

International Classes:

B23P11/02; F01N1/00; F01N1/08; F01N3/28; F01N13/18; (IPC1-7): B23P11/02; F01N1/00; F01N3/28; F01N7/18

Foreign References:

JPS58173033A	1983-10-11
JPH1024381A	1998-01-27
JPH10141052A	1998-05-26
JP2002347653A	2002-12-04
EP0079622A2	1983-05-25

Other References: