MANUFACTURING METHOD OF HEAT EXCHANGER

Title:

MANUFACTURING METHOD OF HEAT EXCHANGER

Document Type and Number:

WIPO Patent Application WO/2019/176072

Kind Code:

A1

Abstract:

A heat exchanger manufacturing method based on diffusion bonding is provided which suppresses deformation of the members to be bonded formed from stainless steel plates and which achieves excellent release characteristics after the diffusion bonding process (release characteristics between the members to be bonded and the release members). This heat exchanger manufacturing method, for stacking, heating and pressurizing, and diffusion bonding multiple members to be bonded 1 formed from stainless steel, involves performing diffusion bonding using a combination of the members to be bonded 1 and release members 3, wherein release members 3 are arranged on both sides of the members to be bonded 1, holding jigs 4 are arranged so as to clamp the members to be bonded 1, with the release members 3 interposed between said members to be bonded 1 and said holding jigs 4, and thereafter, a pressure-applying device applies pressure through the holding jigs 4. The release members 3 include a steel material containing at least 1.5 mass% of Si, and the ratio (Fr/Fp) of high temperature strength (Fr) at 1000°C of the release member 3 to the high temperature strength (Fp) at 1000°C of the members to be bonded 1 is greater than or equal to 0.9.

Inventors:

HORI YOSHIAKI (JP)
IMAKAWA KAZUNARI (JP)

Application Number:

PCT/JP2018/010334

Publication Date:

September 19, 2019

Filing Date:

March 15, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NISSHIN STEEL CO LTD (JP)

International Classes:

B23K20/00; B23K20/04; F28F3/08

Foreign References:

JP2014128815A	2014-07-10
JPH0313283A	1991-01-22
JPS53102247A	1978-09-06
JP2000326077A	2000-11-28
JP2010085094A	2010-04-15
JP2014128815A	2014-07-10

Other References: