이종 상대재 경도에 따른 철강재료의 미끄럼 마모 특성 해석
Analysis of Sliding Wear Behavior of Mild Steel According to Hardness of Dissimilar Mating Materials
1
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
This study examines the wear behavior of mild steel pins mated against alloyed tool steel discs in a pin-on-disc type sliding test machine and provides specific clarification regarding the effects of disc hardness on the wear behavior of a mating mild steel pin. The analysis confirms these effects through the observation of differences in the wear rates of the mild steel pins at low sliding speed ranges. These differences occur even though the hardness of the mating disc does not affect the wear characteristic curve patterns for the sliding speeds, regardless of the wear regime. In the running-in wear regime, increasing the hardness of the mating disc results in a decrease in the wear rates of the mild steel pins at low sliding speed ranges. However, in the steadystate wear region, the wear rate of a pin mated against the 42DISC is greater than the wear rate of a pin mated against the 30DISC, which has a lower hardness value. This means that the tribochemical reactivity of the mating disc, which is based on hardness value, influences the wear behavior of mild steel at low sliding speed ranges. In particular, oxides with higher oxygen contents, such as Fe2O3 oxides, form predominantly on the worn surface of the 42DISC. On the contrary, the wear behavior of mild steel pins at high sliding speed ranges is nearly unaffected by the hardness of the mating disc.
Abstract
This study examines the wear behavior of mild steel pins mated against alloyed tool steel discs in a pin-on-disc type sliding test machine and provides specific clarification regarding the effects of disc hardness on the wear behavior of a mating mild steel pin. The analysis confirms these effects through the observation of differences in the wear rates of the mild steel pins at low sliding speed ranges. These differences occur even though the hardness of the mating disc does not affect the wear characteristic curve patterns for the sliding speeds, regardless of the wear regime. In the running-in wear regime, increasing the hardness of the mating disc results in a decrease in the wear rates of the mild steel pins at low sliding speed ranges. However, in the steadystate wear region, the wear rate of a pin mated against the 42DISC is greater than the wear rate of a pin mated against the 30DISC, which has a lower hardness value. This means that the tribochemical reactivity of the mating disc, which is based on hardness value, influences the wear behavior of mild steel at low sliding speed ranges. In particular, oxides with higher oxygen contents, such as Fe2O3 oxides, form predominantly on the worn surface of the 42DISC. On the contrary, the wear behavior of mild steel pins at high sliding speed ranges is nearly unaffected by the hardness of the mating disc.
참고문헌 (15)
- Sasada, T., "Wear testing method and wear properties of materials", Pro. 5th Wear Symposium of J. JSLE, pp.21~30 (1970)
- Endo, Y., "Surface science", pp.64~73 (1985), Youkendo book co.
- Egawa, K., "Effects of hardness of hardened steels on frictional wear (1st report)", J. JSLE, 19(12), pp.897~904 (1974)
- Egawa, K., "Effects of hardness of hardened steels on frictional wear(2nd report)", J. JSLE, 19(12), pp.905~911 (1974)
- Egawa, K., "Effects of hardness of hardened steels on frictional wear(3rd report)", J. JSLE, 26(8), pp.576~581 (1981)
- Egawa, K., "Effects of hardness of hardened steels on frictional wear(4th report)", J. JSLE, 26(1), pp.1~ (1981)
- Egawa, K., "Characteristics of frictional wear of mild steel", J. JSLE, 26(6), pp.424~428 (1981)
- 이한영, "베어링강의 미끄럼 마모거동에 미치는 Tempering 경도의 영향", 한국윤활학회지, 29(6), pp.360~365 (2013), 한국윤활학회[DOI]
- Sato K., "Wear of Metals and its Counterplan", pp.9~18 (1965), Youkendo book co
- Lee, H. -Y., "Analysis of sliding wear mode on annealed steel by X-ray diffraction technique", Wear, 256, pp.657~663 (2003)
- 이한영, "알루미늄 합금의 미끄럼마모 특성에 미치는 상대재 경도의 영향", 한국윤활학회지, 26(2), pp.105~110 (2010), 한국윤활학회
- Welsh, N. C., "The Dry Wear of Steel I. The general pattern of behavior", Phi. Trans. Royal Soc. London, series A, 257(1077), pp.31~50 (1965)
- Welsh, N. C., "The Dry Wear of Steel II. Interpretation and special features", Phi. Trans. Royal Soc. London, series A, 257(1077), pp.51~70 (1965)
- Karl-Heinz zum Gahr, "Microstructure and Wear of Materials", pp.378~380 (1987), Elsevier
- Smith, W. F., "Foundations of Materials Science and Engineering", pp.640~ (2005), McGraw-Hill Korea Inc.