Search International and National Patent Collections

1. (WO2010120127) PASSAGE CAP BONDING METHOD OF BOILER HEAT EXCHANGER

Pub. No.:    WO/2010/120127    International Application No.:    PCT/KR2010/002328
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Fri Apr 16 01:59:59 CEST 2010
IPC: B23K 26/20
F28F 9/02
Applicants: KYUNGDONG NAVIEN CO., LTD.
주식회사 경동나비엔
KIM, Doo Sig
김두식
AN, Tae Won
안태원
Inventors: KIM, Doo Sig
김두식
AN, Tae Won
안태원
Title: PASSAGE CAP BONDING METHOD OF BOILER HEAT EXCHANGER
Abstract:
The present invention relates to a passage cap bonding method of a boiler heat exchanger capable of preventing the transformation of a product caused by heat that is generated while a passage cap is welded with a body housing of the heat exchanger, and improving the performance and quality of the heat exchanger because a firm bonding process is performed. Therefore, the object of the present invention is to provide a passage cap bonding method of a heat exchanger that is arranged inside a boiler. The method comprises a step of forming a passage by butt-welding the passage cap on one lateral side of the body housing made of a stainless material which constitutes the heat exchanger, wherein the body housing and the passage cap are bonded together by deeply and narrowly forming welding beads through laser welding.