• 제목/요약/키워드: Cemented Carbide Endmill

검색결과 3건 처리시간 0.023초

초경엔드밀 적용 표면처리 조성별 마모특성 영향 평가 (The Evaluation of Wear Characteristics Depending on Components of Surface Treatment for Cemented Carbide Endmill)

  • 윤일채;김동배;윤국태;윤인준;이지형;고태조
    • 한국정밀공학회지
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    • 제31권6호
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    • pp.513-519
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    • 2014
  • For depth machining in die and mold, Electrical Discharge Machining (EDM) is used generally. To make deep hole and deep shape efficiently, cemented carbide endmill for depth machining is necessary. For this purpose, cemented carbide endmill was designed using design of experiment (DOE). To improve cutting performance, endmill was coated with multilayer surface treatment, TiAlCrSiN and TiAlCrN, for higher wear resistance. In order to evaluate the endmill, Transverse Rupture Strength (TRS) test was tried for investigating the relationship between surface treatment and strength in endmill body. Scratch test was also used for measuring adhesion force of each surface treatment. To evaluate hardness of surface treatment, Atomic Force Microscope (AFM) analysis was carried out. Wear test was executed for characteristics of each surface treatment in high temperature. Consequently, TiAlCrSiN was superior to the TiAlCrN coating in case of high temperature environment such as cutting.

초미립 초경소재 개발을 통한 엔드밀 공구의 성능 평가 (Machinability Evaluation of Endmill Tool through Development of Ultra-fine Grain Grade Cemented Tungsten Carbide Material)

  • 김홍규;서정태;권동현;김정석;강명창
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1997년도 추계학술대회 논문집
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    • pp.865-869
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    • 1997
  • In recent years, there has been increasing demand of ultra-fine grain graded cemented tungsten carbide material with high hardness and toughness which is used as high speed cutting tool for development in semiconductor, electronics and die/mold industry, which bring into limelight high-precision, high-efficient machining of sculptured surfaces. This paper deals with the performance of variation in the ultra-fine grain graded cemented tungsten carbide material such as grain size, hardness and density varied according to the volume of added elements, Co or TaC, and he changing of mixing, sintering process. Also, the performance of developing material with uniformed grain size of 0.5${\mu}{\textrm}{m}$ is compared with other domestics' & foreign companies' with analyzing and cutting performance testing.

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볼 엔드밀 AlTiN코팅 층수에 따른 플라스틱금형강의 고속가공에 관한 연구 (A Study on the High Speed Characteristics of Plastic Mould Steel using Ball End Mill AlTiN Coated Layers)

  • 이승철;조규재
    • 한국기계가공학회지
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    • 제9권1호
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    • pp.81-86
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    • 2010
  • This paper investigated into process characteristics of AlTiN coated layers for machining to the direction of upper and lower in plastic mold material (KP-4) with the cemented carbide ball endmill with the diameter of 8mm coated AlTiN layers (1~4) step by step using machining center. The material used in experiments was KP-4 that was machined by three types of inclined angles; $15^{\circ}$, $30^{\circ}$ and $45^{\circ}$ As estimated mechanical properties of AlTiN coated layers, it was shown the most result in the condition of three layered coating that the coating that the coating depth, the hardness of the coated layer and the surface roughness of the coated layer were $13{\mu}m$, Hv 3027.3 and $0.042{\mu}m$, respectively. The cutting component was better at the condition of upper direction than that of lower direction in all experimental conditions and indicated to be less which the bigger angle of the material was increased the effective diameter of the tool.