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http://dx.doi.org/10.5228/KSTP.2020.29.2.113

Study of Tool Surface Texture Directionality Effect on Frictional Behavior of Sheet Metal Forming  

Han, S.S. (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Publication Information
Transactions of Materials Processing / v.29, no.2, 2020 , pp. 113-117 More about this Journal
Abstract
Various parameters are involved in the frictional behavior of steel sheet during stamping. We performed various tests in order to investigate the influence of tool surface texture directionality upon the resulting friction in sheet forming processes. Four different tools were manufactured which gave us a range of roughness for both parallel and transverse texture directions. Each of the tools was examined in flat type friction tests under identical test conditions. The tool with the transverse surface texture produces significantly lower levels of friction than the tool with parallel texture direction. Considering the lubrication mechanism associated with transverse texture, one can imagine the lubricant being constantly supplied from the reservoir of the micro valley to the point of contact and hence producing the lower levels of friction seen.
Keywords
Micro Valleys; Flat Type Friction test; Real Contact Area; Lubricant Supply; Lubricant Viscosity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 W. T. Kim, D. H. Lee, M. S. Suh, Y. H. Moon, 2005, Analysis on parameters affecting the friction coefficient in drawbead forming of sheet metal, Trans. Mater. Process., Vol.14, No.8, pp.668-674.   DOI
2 H. Kim, S.Han, Q.Yanc, T.Altan , 2008, Evaluation of tool materials, coatings and lubricants in forming galvanized advanced high strength steels (AHSS), CIRP Annals - Manufacturing Technology, Vol.57, No. 1, pp.299-304.   DOI
3 Y. Tamai, T. Fujita, T. Inazumi, K. Manabe, 2013, Effects of Contact Pressure, Sliding Velocity and Sliding Length on Friction Behavior of High-Tensile-Strength Steel Sheets, J. Jpn. Soc. Technol. Plast., Vol.54, No. 629, pp. 537-541.   DOI
4 P. Skarpelos, J. W. Morris, Jr., 1997, The effect of surface morphology on friction during forming of electrogalvanized sheet steel, WEAR, Vol. 212, No. 2, pp. 165-172.   DOI
5 A. Azushima, M. Sakuramoto, 2006, Effects of Plastic Strain on Surface Roughness and Coefficient of Friction in Tension-bending Test, Annals of the CIRP, Vol. 55, No. 1, pp.303-306.   DOI
6 S. S. Han, K. C. Park, 2009, Effect of Surface Roughness on Frictional Behavior of Sheet Steel for Automotive, Trans. Mater. Process., Vol.17, No.6, pp. 401-406.   DOI
7 J. E. Kim, J. Y. Heo, I. C. Yoon, J. S. Song, K. T. Youn, C. D. Park, 2015, Evaluation of Friction Characteristics for High-Strength-Steel Sheets Depending on Conditions, Trans. Mater. Process., Vol.24, No.6, pp. 381-386.   DOI