Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
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Microstructure and wear performance of WC-6.5%Co cladding layer by electric resistance welding

저항 클래딩법에 의해 형성된 내마모성 WC-6.5Co 클래딩층의 미크로조직 및 내마모성능

  • 이진우 (충남대학교 기계공학과) ;
  • 배명일 (충남대학교 기계공학과) ;
  • 김상진 (충남대학교 BK21 메카트로닉스 사업단) ;
  • 이영호 (충남대학교 BK21 메카트로닉스 사업단)
  • Published : 2006.10.19
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Abstract

This study deals with characterizations of microstructure and wear performance of a cladding layer, product on 1.9 mm-thick mild steel plate by the electric resistance welding, of composite metal powder of Coarse WC-6.5%Co and high carbon alloy(SHA). The cladding layer was examined and tested fur microstructural features, chemical composition, hardness, wear performance and wear mechanism. The cladding layer have two different matrix were observed by an optical microscope and EPMA. The one was the coarse WC-6.5Co structure. The other was the melted SHA with surrounding the WC-6.5Co structure. The hardness of WC-6.5Co was 1210HV. The hardness of SHA was 640HV. In comparison by wear rate, the cladding layer showed the remarkable wear performance that was 15 times of SM490 and about 62% of D2.

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