• 제목/요약/키워드: 경사면마모

검색결과 2건 처리시간 0.016초

증기발생기에서 지지대와 세관의 경사면 접촉시 상대변위에 의한 세관 마모량 예측 방법 (A Method for Prediction of Tube Wear by Relative Displacement in the case of Inclined Contact between Tube & Support of Steam Generator)

  • 이용선;박문규;김태순;박치용;부명환
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2003년도 추계학술대회
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    • pp.1168-1173
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    • 2003
  • When the tube contacted to support and antivibration bar of the steam generator in unclear power plant, the contact area is worn out by their relative displacement. In the study, wear depths of the tube inclined to tube support and antivibration bar are approximately predicted by a method using the contact load and relative displacement. In the case of the inclined contact, the results show wear depths of the steam generator tube predicted by the impact model are larger than those by the sliding model.

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탭 형상에 따른 공구마모 특성에 관한 연구 (A Study About Tool Wear Characteristic on Geometry of Tap)

  • 최만성;윤홍기
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2000년도 추계학술대회 논문집
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    • pp.892-897
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    • 2000
  • In this study, tap wear was analyzed not only to predict the tap life time but also to propose an improved tap design. Because rake angle and thread relief of tap are the significant factors in geometry of tap, these two factors were picked as the experiment variables. The experiment was conducted with six types of tap which have 6$^{\circ}$ , 8$^{\circ}$ and 12$^{\circ}$ of rake angles with 0,08mm and 0.14 mm of thread relief. From the measured cutting force, it could be known that cutting torque was low at the large the rake thread relief and tool life was long as rake angle became large. Eventually, tool life is longest when rake angle is 12$^{\circ}$ and the with 0.08mm thread relief. Aand the width of crater wear and that of flank wear were measured when a tapping torque was 20 [$kg_f$-mm] . Most of the measured values were above the width of tool wear[$V_B$=O.O3m], which means that tool life is over.

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