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Evaluation of Frictional Characteristic of Galvannealed sheet steel with different annealing temperatures at Lower Normal Loads  

Lee Jung-Min (부산대학교 정밀기계공학화 대학원)
Jeon Seong-Jin (부산대학교 정밀기계공학화 대학원)
Kim Dong-Hwan (진주국제대학교 자동차공학과)
Kim Dong-Jin (POSCO 자동차강재연구센터)
Park Sung-Ho (POSCO 자동차강재연구센터)
Kim Byung-Min (부산대학교 정밀정형 및 금형가공연구소)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.4, 2006 , pp. 109-115 More about this Journal
Abstract
This paper is designed to estimate friction and powdering characteristic of coating layer on galvannealed sheet steel with different annealing temperature, which is 465, 505, 515 and $540^{\circ}C$, Estimations of powdering and friction were done using a $60^{\circ}$ bending test and one side friction test, respectively. In order to obviously understand the effect of coatings on friction cross-section of coatings before and after friction test was also observed by SEM. The results show that powdering of coatings is increased with increasing of annealing temperature and that friction characteristic greatly depends on powdering which leads to increase of real contact area between tools and coatings.
Keywords
Galvannealed sheet steel; Powdering; Annealing temperature; One side friction test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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