마찰교반용접에서 키홀 리필 기술 동향Review of Keyhole Refilling Technology in Friction Stir Welding
- Other Titles
- Review of Keyhole Refilling Technology in Friction Stir Welding
- Authors
- 윤진영; 강상훈; 이세헌; 김철희
- Issue Date
- Aug-2018
- Publisher
- 대한용접접합학회
- Keywords
- Friction stir welding; Keyhole; Refill; Resistance spot welding
- Citation
- 대한용접접합학회지, v.36, no.4, pp.58 - 62
- Indexed
- KCI
- Journal Title
- 대한용접접합학회지
- Volume
- 36
- Number
- 4
- Start Page
- 58
- End Page
- 62
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2312
- DOI
- 10.5781/JWJ.2018.36.4.6
- ISSN
- 2466-2232
- Abstract
- Friction spot welding is a kind of solid state welding process which can prevent welding defects observed in fusion welding processes. Friction stir welding inherently utilizes a rotating tool and a keyhole is formed after retreat of the tool like a welding crater. In this paper, two kinds of keyhole refilling techniques (1-step and 2-step processes) were introduced. 1-step refilling methods employed specially designed welding tools. The pin and shoulder (or sleeve) can be separately driven to stir the base material and refill the keyhole. In the 2-step refilling methods, friction stir and resistance spot processes were suggested as a successive process and optionally filler metal was supplied. Resistance spot process is more economical process than friction stir welding, and the keyhole was refilled without melting by selecting proper parameters.
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