Title:
STAINLESS STEEL JOINING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/052903
Kind Code:
A2
Abstract:
The present invention relates to a stainless steel joining method, and more particularly, to a stainless steel joining method which involves forming a narrow and deep welding bead, and enables a degradation in fatigue strength against thermal stress to be prevented, thus preventing the deformation of products. The stainless steel joining method of the present invention comprises: a first step of inserting a thin brazing filler metal between the joining surfaces of two pieces of stainless steel; a second step of enabling a contactless laser welder to radiate a laser beam onto the joining surfaces to perform a welding process; a third step of filling the gap between the joining surfaces with a brazing filler metal molten in a brazing furnace to perform a brazing process; and a fourth step of cooling the brazing filler metal which fills the gap between the joining surfaces. The stainless steel joining method according to the present invention inserts the thin brazing filler metal between stainless steel base metals, and performs a contactless laser welding process on the joined portions, to thereby form a narrow and deep welding bead, prevent a degradation in fatigue strength against thermal stress, and prevent the deformation of products.
Inventors:
YANG, Sung Pyo (1 BoSeongChungShil Apt, 556-2 Segyo-don, Pyeongtaek-si Gyeonggi-do 450-746, 450-746, KR)
양성표 (경기도 평택시 세교동 556-2 보성청실아파트, 450-746 Gyeonggi-do, 450-746, KR)
양성표 (경기도 평택시 세교동 556-2 보성청실아파트, 450-746 Gyeonggi-do, 450-746, KR)
Application Number:
KR2010/006840
Publication Date:
May 05, 2011
Filing Date:
October 07, 2010
Export Citation:
Assignee:
KYUNGDONG NAVIEN CO., LTD. (437 Segyo-dong, Pyeongtaek-si, Gyeonggi-do 450-818, 450-818, KR)
주식회사 경동나비엔 (경기도 평택시 세교동 437, 450-818 Gyeonggi-do, 450-818, KR)
YANG, Sung Pyo (1 BoSeongChungShil Apt, 556-2 Segyo-don, Pyeongtaek-si Gyeonggi-do 450-746, 450-746, KR)
주식회사 경동나비엔 (경기도 평택시 세교동 437, 450-818 Gyeonggi-do, 450-818, KR)
YANG, Sung Pyo (1 BoSeongChungShil Apt, 556-2 Segyo-don, Pyeongtaek-si Gyeonggi-do 450-746, 450-746, KR)
International Classes:
B23K28/02; B23K1/008; B23K26/20; B23K103/04
Attorney, Agent or Firm:
CHO, Chul-Hyun (Oori Patent & Law Office #1301, Yeosam B/D 13F 648-23,Yoksam1-dong, Gangnam-gu, Seoul 135-748, 135-748, KR)