혼합가스가 STS304의 TIG 아크용접에서 용접성에 미치는 영향

• 영문명: The Effect of Mixing Gas on Weldability in TIG Arc Welding of STS304
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 김중호(Jung-Ho Kim)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제20권 2호, 71~78쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2015.06.30

영문 초록

The effect of mixing gas on weldability in TIG arc welding of STS304 was studied in this thesis. Under four kinds of mixing gas such as Ar100%, Ar-3%H2, Ar-5%H2, Ar-7%H2 the penetration and machanical properties were investigated. The penetration and microstructure, hardness and tensile strength were observed from bead-on-plate welding and X-groove(1pass, thickness-6㎜) butt welding specimens. The results were as follows; 1) From TIG arc welding using mixed gas with hydrogen, welding voltage and penetration increased as hydrogen increasing, compared to oure as gas condition. 2) The hardness value of H.A.Z was higher than base metal and weld matal.(base metal>weld metal. 3) Tensile strength was higher under pure Ar gas condition than mixed gas conditions. As conten of hydrogen increasing, the tensile strength was decreased.

목차

Ⅰ. 서 론

Ⅱ. 실 험

Ⅲ. 실험결과 및 고찰

Ⅳ. 결 론

키워드

Emission Spectrometer 분광분석기 Hardness 경도 Base Metal 모재 Weld Metal 용접금속 H.A.Z Heat Affected Zone 열영향부 SEM 전자주사현미경