심리스 튜브 제조용 피어싱 플러그 공구강과 SA210C강의 고온미끄럼 마모에 미치는 예비산화의 영향
Effects of Preoxidation on High Temperature Wear of Piercing Plug Tool Steel Sliding Against SA210C Steel Used for Production of Seamless Tube
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Effects of preoxidation on high temperature wear of piercing plug tool steel sliding against SA210C steelused for production of seamless tube have been studied using a pin-on-disc CETR tribometer, under appliednormal load of 20 N at 900oC in air. It was found in the preoxidized pin specimens of piercing plug toolsteel that the coefficient of friction decreased to about 0.4 at an initial stage followed by showing nearlyconstant value of about 0.4 during high temperature wear testing. On the other hand, it was also found inthe pin specimens without preoxidation that the coefficient of friction increased and fluctuated, ranging fromabout 0.3 to 0.6 during the tests until the running period of about 800 sec. The compact and continuousFe-oxide layer was formed on the contact surface of the preoxidized pin specimens after high temperaturewear testing followed by penetrating along the grain boundaries of coarse ferrite in the decarburized regionbeneath the oxide layer due to the lower hardness of the region.
Abstract
Effects of preoxidation on high temperature wear of piercing plug tool steel sliding against SA210C steel used for production of seamless tube have been studied using a pin-on-disc CETR tribometer, under applied normal load of 20 N at 900oC in air. It was found in the preoxidized pin specimens of piercing plug tool steel that the coefficient of friction decreased to about 0.4 at an initial stage followed by showing nearly constant value of about 0.4 during high temperature wear testing. On the other hand, it was also found in the pin specimens without preoxidation that the coefficient of friction increased and fluctuated, ranging from about 0.3 to 0.6 during the tests until the running period of about 800 sec. The compact and continuous Fe-oxide layer was formed on the contact surface of the preoxidized pin specimens after high temperature wear testing followed by penetrating along the grain boundaries of coarse ferrite in the decarburized region beneath the oxide layer due to the lower hardness of the region
참고문헌 (6)
- T. Yamakawa, "US Patent No. US 7,383,710 B2", ~ (2008)
- H. Kato, , K. Komaim Wear, 262, pp.36~ (2007)
- R. B. Waterhouse, , Tribology International, 14, pp.203~ (1981)
- M. Hajduga, , Oxidation of Metals, 29, pp.419~ (1988)
- 최병영, "STD 61 공구강과 상대재인 핫 프레스 가공용 Al-9%Si 코팅강의 고온 미끄럼 마모", 대한금속·재료학회지, 47(10), pp.667~674 (2009), 대한금속·재료학회
- F. H. Stott, , Tribology International, 35, pp.489~ (2002)