Publisher : The Korean Society for Technology of Plasticity
DOI : 10.5228/KSTP.24.6.381
Title & Authors
Evaluation of Friction Characteristics for High-Strength-Steel Sheets Depending on Conditions Kim, J. E.; Heo, J. Y.; Yoon, I. C.; Song, J. S.; Youn, K. T.; Park, C. D.;
Recently, high-strength-steel sheets have been used extensively for increasing fuel-efficiency and stability in automobiles. A study on the characteristics regarding friction factors is required because high-strength-steel sheets have higher contact pressure at the tool interface as compared to low-strength steel sheets. For the current study, a sheet friction test was used to examine the influence of several factors on friction. The friction tests were performed on two types of sheet steels (SPFC590 and SPFC980) to obtain friction coefficients as a function of contact pressure, surface roughness, lubricant viscosity, and speed. Based on the experimental results for SPFC590 and SPFC980, the friction coefficient decreased with increasing contact pressure, but the friction coefficient increased with increasing surface roughness. Also, the friction coefficient decreased with increasing lubricant viscosity and decreasing speed.
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