대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제24권2호
  • /
  • Pages.431-437
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  • 2000
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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레일 용접부의 경도와 마멸특성에 관한 실험적 연구

Experimental Study on Hardness and Wear Characteristics of Welded Rails

  • 김청균 (홍익대학교 트라이볼로지 연구센터)
  • 발행 : 2000.02.01
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초록

In this paper, thermite and gas pressure weldings have been used to join rails in-track and analyzed as functions of hardness and wear characteristics. The wear rate of thermite welded rail is low compared with that of gas pressure welded rail, which is tested in a pin-on-disk wear tester. The hardness of thermite welded materials is relatively high and narrowly distributed between three zones; welded part, thermally affected zone, and base matrix. Wear of a welded rail may be a major factor in railroad maintenance costs and failures at the rail-rail huh joint.

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참고문헌

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