초고용착속도를 얻기 위한 Super-MAG 프로세스 개발에 관한 연구
- Alternative Title
- A Study on Super-MAG Process Development for Ultra-high Deposition Rate
- Abstract
- In recent years, it focused on cost reduction through improved welding productivity in order to improve cost competitiveness in the manufacturing sector. Therefore, the groove design changes to increase productivity and high deposition rate process such as applying various methods have been tried.
The welded to excessively high current in order to improve productivity in the workplace. In the work environment, which cause excessive spatter caused by such a strong emitter flammable materials are commonly used easily lead to fires.
Thus, TIG and GMAW Spray Transfer to prefer in the manufacturing sector.
But, it is difficult to spot low productivity limitations apply. So, it is necessary to develop a new welding process in the area GMAW Spray Transfer is less spatter is produced during the arc welding.
- Issued Date
- 2016
- Awarded Date
- 2016. 2
- Type
- Dissertation
- Publisher
- 부경대학교 대학원
- Affiliation
- 부경대학교 대학원
- Department
- 대학원 신소재시스템공학과
- Advisor
- 조상명
- Table Of Contents
- Abstract ································································································ⅲ
제 1 장 서 론 ·························································································1
1.1 연구 배경 및 필요성 ··········································································1
1.2 연구 목적 및 개요 ·············································································2
제 2 장 이론적 배경 ················································································3
2.1 MAG 용접의 원리 및 장·단점 ······························································3
2.2 용적의 이행 ······················································································5
2.2.1 용적에 작용하는 힘 ·········································································5
2.2.2 용적이행 모드의 분류 ······································································7
2.3 Pulse 용접 ························································································9
2.3.1 Pulse energy 정의 ········································································11
2.3.2 Comparative arc length 정의 ························································12
2.4 용착단면적의 정의 ············································································13
2.5 입열량의 정의 ··················································································14
2.6 오실레이션용접의 정의 ······································································15
2.7 비드 볼록 정도의 정의 ······································································16
제 3 장 MAG 아크에 송급하는 Filler Wire와 Filler C-Strip 비교실험··········17
3.1 서언 ·······························································································17
3.2 Parameter 결정 ···············································································17
3.3 Filler Wire 전방 및 후방 송급 실험 ···················································19
3.3.1 실험 재료 ·····················································································19
3.3.2 실험 방법 ·····················································································20
3.3.3 실험 결과 및 고찰 ·········································································22
3.4 Filler C-Strip 전방 및 후방 송급 실험 ··············································26
3.4.1 실험 재료 ·····················································································26
3.4.2 실험 방법 ·····················································································27
3.4.3 실험 결과 및 고찰 ·········································································29
3.5 Super-MAG 용접의 정의 ··································································33
3.6 결언 ·······························································································34
제 4 장 Super-MAG 용접에 의한 기초실험 ··············································35
4.1 서언 ·······························································································35
4.2 Super-MAG 용접에서 전류에 따른 Filler C-Strip 송급속도 변경 실험 ··36
4.2.1 실험 방법 ·····················································································36
4.2.2 실험 결과 ·····················································································38
4.2.3 고찰 ·····························································································45
4.3 결언 ·······························································································52
제 5 장 Super-MAG 용접에 의한 Fillet 용접 적용 실험 ····························53
5.1 서 언 ······························································································53
5.2 용착속도 21kg/hr에서 용접속도에 따른 Fillet MAG 용접 현상 관찰 ······54
5.2.1 실험 방법 ·····················································································54
5.2.2 실험 결과 ·····················································································55
5.2.3 고찰 ····························································································58
5.3 비드 외관 향상을 위한 Fillet MAG 용접 전압 변경 실험 ······················60
5.3.1 실험 방법 ·····················································································60
5.3.2 실험 결과 ·····················································································61
5.3.3 고찰 ····························································································64
5.4 결언 ·······························································································66
제 6 장 결론 ·························································································67
참고문헌 ·······························································································68
학위과정 중 주요 학술지 게재 및 발표논문과 특허 ·····································69
감사의 글 ······························································································71
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