分岐管の製造方法及び分岐管製造装置

Title:

分岐管の製造方法及び分岐管製造装置

Document Type and Number:

Japanese Patent JP5095879

Kind Code:

B2

Abstract:

A method of manufacturing a branched pipe includes: a first swelling step of swelling a swelled part from a main body of a pipe blank by pressurizing the inner surface of the pipe blank by an elastic body, and simultaneously, forming an opening in the tip portion of the swelled part along a circumferential direction; and a second swelling step of swelling the swelled part from the main body by pressurizing the inner surface of the pipe blank by the elastic body.

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JP3765880	METHOD AND EQUIPMENT FOR MANUFACTURING COMPONENT HAVING PIERCING PART IN DOUBLE WALL BY INTERNAL HIGH PRESSURE AND DEFORMATION METHOD
JPH07275973	PRODUCTION OF METALLIC TUBE HAVING PLURAL BRANCH TUBES AND PIPING HEADER USING SAME METALLIC TUBE

Inventors:

Taiki Ogura
Tatsushi Ito

Application Number:

JP2012508849A

Publication Date:

December 12, 2012

Filing Date:

July 28, 2011

Export Citation:

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Assignee:

KOMATSU LTD.

International Classes:

B21D26/037; B21D26/035; B21D26/043

Domestic Patent References:

JP2007105788A	2007-04-26
JP2001286944A	2001-10-16
JPS5154135U	1976-04-24
JPH07275973A	1995-10-24
JP2004001022A	2004-01-08
JPS447626Y1	1969-03-24
JP2007105788A	2007-04-26
JP2001286944A	2001-10-16

Foreign References:

US20060086166A1	2006-04-27
DE102007017190A1	2008-04-30

Attorney, Agent or Firm:

Shinki Global IP Patent Corporation

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