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분말고속도공구강을 활용한 베어링 레이스 열간 단조 금형의 수명 및 기계적 특성 KCI 등재

Life and Mechanical Properties of Hot Former Die for Bearing Race using P/M High Speed Steel

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한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

P/M high speed steel (1.26% C, 4.42% Cr, 6.54% W, 4.92% Mo, 3.21 % V, 8.77% Co, bal. Fe) was applied to hot former die. It showed that the die life became 2.7 times higher than that of cast/wrought SKH 55 tool steel which is commercially used. The increase of die life was corresponding to the improved hardness and transverse rupture strength of PM high speed steel due to the finer grain and carbide as well as the uniform carbide distribution. The P/M high speed steel with the promoted die life could be an alternative to the conventional SKH55.

저자
  • 홍성연 | Hong Seong-Hyeon
  • 배종수 | Bae Jong-Soo