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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
  • 134 Downloads

Abstract

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.

Keywords

Contact resistance Surface conditions Galvanised steel·surface Resistance welding 

Notes

Funding information

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

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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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