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.

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

• 김인주(한국생산기술연구원) | I. J. Kim
• 오익현(한국생산기술연구원) | I. H. Oh