PIPE EXPANDING METHOD - MITSUBISHI HEAVY IND LTD

Title:

PIPE EXPANDING METHOD

Document Type and Number:

WIPO Patent Application WO/2008/010427

Kind Code:

A1

Abstract:

Provided is a pipe expanding method by which an inspection range (region) of a heat transfer pipe fixed to a pipe plate can be reduced and a time required for the inspection can be shortened. In the pipe expanding method, the heat transfer pipe (13) inserted into a pipe hole (3a) of the pipe plate (3) is fixed by pipe expansion. The outer circumference surface of the heat transfer pipe (13) is adhered to the inner circumference surface of the pipe hole (3a), over an end surface on a primary side to an end surface on a secondary side of the pipe plate (3). Then, within a range of a prescribed distance from the vicinity of the end surface on the secondary side or that of the end surface on the secondary side to the end surface on the primary side, a surface pressure between the transfer pipe (13) and the pipe plate (3) is further increased.

Inventors:

MUROYA ITARU (JP)
IWAMOTO YOICHI (JP)
WATANABE HISANORI (JP)

Application Number:

PCT/JP2007/063569

Publication Date:

January 24, 2008

Filing Date:

July 06, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI HEAVY IND LTD (JP)
MUROYA ITARU (JP)
IWAMOTO YOICHI (JP)
WATANABE HISANORI (JP)

International Classes:

F28F9/16; B21D39/08; B21D39/10; F28D7/16

Foreign References:

JP2001269732A	2001-10-02
JPS62104634A	1987-05-15
JP2003106789A	2003-04-09
JPS60172797A	1985-09-06
JPS60172797A	1985-09-06
JP2001269732A	2001-10-02

Other References: