TIG 용접용 텅스텐 전극봉 연구 개발 동향

Tungsten Inert Gas (TIG) welding process is mostly applied to high alloy steel pipes including stainless steels be- cause of superior welding quality and gap bridge-ability than other welding processes. However, it has poor pro- ductivity due to low welding speed and deposition rate. In order to imp...

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Bibliographic Details
Published in대한용접·접합학회지 Vol. 40; no. 4; pp. 305 - 310
Main Authors 이희근(Hee-Keun Lee), 윤광희(Kwang-Hee Yun), 강정윤(Chung-Yun Kang)
Format Journal Article
LanguageKorean
Published 대한용접·접합학회 01.08.2022
대한용접접합학회
Subjects
기계공학
Arc start
TIG welding
GTAW
Tungsten rim
Electrode consumption
Tungsten electrode
Electrode erosion resistance
Lanthan
Thorium
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Summary:Tungsten Inert Gas (TIG) welding process is mostly applied to high alloy steel pipes including stainless steels be- cause of superior welding quality and gap bridge-ability than other welding processes. However, it has poor pro- ductivity due to low welding speed and deposition rate. In order to improve TIG welding productivity, high perform- ance TIG welding with higher arc temperature, automation and high deposition rate system including hot wire have been developed. Higher arc temperature and longer welding time damage tungsten electrodes of TIG welding. It causes welding defect such as tungsten inclusion and short replacement cycle of tungsten electrodes. Various types of tungsten electrodes containing rare earth metal oxides (thorium, lanthanum, cerium, etc) were introduced to im- prove electrode erosion resistance and arc stability. In this study, their operation characteristics, arc starting perform- ance, tip development, and electrode consumption were reviewed. KCI Citation Count: 0
ISSN:2466-2232
2466-2100
DOI:10.5781/JWJ.2022.40.4.2