Journal of Welding and Joining

  • 제33권6호
  • /
  • Pages.13-20
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  • 2015
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  • 2466-2232(pISSN)
  • /
  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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Effect of Initial (Reference) Welding Current for Adaptive Control and It's Optimization to Secure Proper Weld Properties in Resistance Spot Welding

  • Ashadudzzaman, Md. (Dept. of Advanced Materials Engineering, Dong-Eui University) ;
  • Choi, Il-Dong (Dept. of Materials Engineering, Korea Maritime and ocean university) ;
  • Kim, Jae-Won (School of Materials Science and Engineering, Pusan National University) ;
  • Nam, Dae-Geun (Dongnam Regional Division, Korea Institute of Industrial Technology) ;
  • Park, Yeong-Do (Dept. of Advanced Materials Engineering, Dong-Eui University)
  • 투고 : 2015.08.16
  • 심사 : 2015.08.27
  • 발행 : 2015.12.30
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초록

Many automotive companies are endeavoring to improve the quality of resistance spot welding by updating body-in-white (BIW) production line with adaptive control spot welding system to compensate the process disturbances such as gap, electrode wear, oxidized surfaces, poor fit up and adhesive etc. Most of the commercial adaptive weld controllers require proper "Initial Welding Schedule" or "Reference weld" to achieve compensation in welding parameters during real time welding. In this study, the compensation of a commercial adaptive weld controller had been observed and analyzed thoroughly for various process disturbances to find optimal initial welding schedule. It was observed that 90 percent of the expulsion current in constant current control as reference welding schedule conferred the maximum button diameter in adaptive control welding. Finally, effects of each disturbance in combined field disturbances system with adaptive control had also been confirmed with the design of experiment (DOE) by minitab(R)16 for combined disturbances situation and suitability of optimum initial weld current had also established with real body part validation test.

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참고문헌

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