지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 2,447 - 2,452 (6page)
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초록· 키워드
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High velocity oxygen fuel(HVOF) thermal spray is a process to produce coating layer in conflict with substrate by spraying the powder to the molten or semi-molten state with high-velocity in the heat source of high-temperature. That is a kind of surface reforming technology to produce the coating layer of thermal spray. In this study, the plunger of high-speed and ultra high-pressure reciprocating hydraulic pump used in an iron mill is made of 420J2. In order to improve the wear resistance, corrosion resistance and thermal resistance, then, the plunger is coated by the powders of WC-Co-Cr and WC-Cr-Ni developed by authors with the high velocity oxygen fuel spraying machine. The surface roughness, hardness, surface and cross-sectional microstructure for no operation and 100 days-operation are measured and compared with two surface reforming and conventional ceramic plungers. It is found that the hardness of the plungers coated by WC-Co-Cr and WC-Cr-Ni powders is higher than that of the conventional ceramic plunger because the WC powder with high hardness in two surface reforming ones is contained.
목차
Abstract
1. 서론
2. 실험 장치 및 방법
3. 실험 결과 및 고찰
4. 결론
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References
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UCI(KEPA) : I410-ECN-0101-2013-556-001416582