자동차 새시용 DP60강 인버터 DC 저항 점용접의 용접성 평가

다국어 초록 (Multilingual Abstract)

This study analyzes the resistance spot weldability of DP60 steels. To analyze the resistance spot weldability of DP60 steels, tensile strength test and macro-section test were conducted for the resistance spot welds. Acceptable welding conditions were determined as a function of the resistance spot welding process parameters such as electrode force, welding time, and welding current. The lower limit of the welding lobe was the minimum shear tension strength for 590MPa-grade steel while the upper limit was determined whether or not expulsion was detected.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험방법
• 3. 실험결과 및 고찰
• 3.1 용접부 단면 마크로 분석
• 3.2 용접부 인장강도 분석
• 3.3 용접 로브곡선 분석
• 3.4 용접부 경도 분석
• 3.5 최적용접조건
• 4. 결론
• 참고문헌

참고문헌 (Reference)

1 박상순, "저항 점 용접된 TRIP590강의 계면파단특성에 관한 평가" 대한금속·재료학회 46 (46): 672-682, 2008

2 T. Lwamoto, "Investigation on Deformation Mode Dependence on train-Induced Martensitic Transformation in TRIP Steels and Modeling of Transformation Kinetics" 40 : 13-182, 1998

3 김인주, "GMA 용접공정에서 공정변수 선정을 위한 플럭스 첨가에 관한 연구" 한국기계기술학회 13 (13): 17-22, 2011

4 D. H. Bea, "Fracture mechanical evaluation of fatigue strength of a single spot welded lap joint under tension-shear load" 13 (13): 42-50, 1990

5 S. B. Oh, "Fatigue Strength Evaluation on the IB-Type Spot-welded Lap Joint of 304 Stainless Steel Part 1 : Maximum Principal Stress" 762-767, 1998

6 Andreas Rupp, "Computer Aided Dimensioning of Spot-Welded Automotive Structures"

7 B. Grirvin, "American Iron and Steel Inst. 27"

8 A. Yoshitake, "A Study on Improving Crashworthiness of Automotive Parts by using High Strength Steel Sheets"