Welding in the World

, Volume 62, Issue 3, pp 511–516 | Cite as

An experimental study on contact resistance of coated galvanized steel sheet

  • Ye-feng Bao
  • Ling Ren
  • Zhong-tai Yu
  • Yong-feng Jiang
  • Ke Yang
Research Paper


A contact resistance measurement system was developed based on a four-wire contact resistance measurement method. A series of experiments were conducted on four kinds of coated galvanized steel sheets using the contact resistance measurement system at different pressures and temperatures. The results showed that pressure and temperature had great effect on contact resistance. The contact resistance was not stable during the initial period when the pressure was changeless and subsequently decreased with the increase of pressure. The contact resistance did not always decline with the temperature at low temperatures because of the joint effects of the electrical and mechanical properties of base metal and the films. However, the contact resistance decreased when the temperature rose within a certain temperature range.


Contact resistance Surface conditions Galvanised steel·surface Resistance welding 


Funding information

This research was financially supported by the Fundamental Research Funds for the Central Universities of P.R. China (NO. 2015B30514 & NO. 2014B11614).


  1. 1.
    Wang M, Wang CY (2003) Effects of surface treatments of galvanised steels on projection welding procedure[J]. China Weld 12(2):103–106Google Scholar
  2. 2.
    Myers PS (1967) Fundaments of heat flow in welding. Weld Res Counc Bull 123(7):1–35Google Scholar
  3. 3.
    Cho HS, Cho YJ (1989) A study of thermal behavior in resistance spot welds. Weld J 68(6):236–244Google Scholar
  4. 4.
    Tslaf A (1982) A thermophysical criterion for the weldability of electric contact material in a steady-state regime. EEE Trans Components Hybrids Manuf Technol 5(1):147–152CrossRefGoogle Scholar
  5. 5.
    Vogler M, Sheppard S (1993) Electrical contact resistance under high loads and elevated temperatures. Weld J 72(6):231–238Google Scholar
  6. 6.
    Thornton PH, Krause AR, Daivs RG (1996) Contact resistance in spot welding. Weld J 75(12):402–412Google Scholar
  7. 7.
    James PS, Chandler HW et al (1997) The effect of mechanical loading on the contact resistance of coated aluminum. Mater Sci Eng A230:194–201CrossRefGoogle Scholar
  8. 8.
    Wu KF (1975) Resistance spot welding of high contact-resistance surface for welding bonding. Weld J 54(12):436–443Google Scholar
  9. 9.
    Luo Z, Shan P, Zheng ZT, Shi T (2006) Stable distribution analysis to statistical evaluation of contact resistance in aluminum alloy spot welding. Trans China Weld Inst 27(4):10–12Google Scholar

Copyright information

© International Institute of Welding 2018

Authors and Affiliations

  • Ye-feng Bao
    • 1
  • Ling Ren
    • 1
  • Zhong-tai Yu
    • 1
  • Yong-feng Jiang
    • 1
  • Ke Yang
    • 1
  1. 1.College of Mechanical and Electrical EngineeringHohai UniversityChangzhouChina

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