Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지
DOI QR코드

DOI QR Code

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

분말고속도공구강을 활용한 베어링 레이스 열간 단조 금형의 수명 및 기계적 특성

  • Hong, Seong-Hyeon (Department of Powder Materials Research, Korea Institute of Materials Science, Korea Institute of Machinery and Materials) ;
  • Bae, Jong-Soo (Department of Powder Materials Research, Korea Institute of Materials Science, Korea Institute of Machinery and Materials)
  • 홍성연 (한국기계연구원 부설 재료연구소 분말재료 연구부) ;
  • 배종수 (한국기계연구원 부설 재료연구소 분말재료 연구부)
  • Published : 2007.12.28
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. J. R. Davis: ASM Specialty Handbook, Tool Materials, ASM, Metals Park, Ohio (1995) 21
  2. E. Klar: Metals Handbook, 9th Ed., Vol. 7, ASM, Metals Park, Ohio (1984) 784
  3. L. Westin and H. Wisell: Scandinavian J. of Metallurgy, 25 (1996) 41
  4. Jinyang Industry: Catalogue of Jinyang Powder High Speed Steel, Daegue (1999) 1; 진양공업: 진양 분말고속도공구강, 대구 (1999) 1
  5. S. H. Lee, J. S. Bae, T. S. Lim, S. H. Hong, Y. J. Kim and P. W. Shin: J. Korean Inst. of Metals and Materials, 37 (1999) 1475 (Korean)
  6. S. H. Hong, Y. J. Kim and J. S. Bae: J. Korean Powder Metall. Inst., 7 (2000) 78 (Korean)
  7. Y. J. Kim, Js. S. Bae, S. H. Hong, H. S. Chung and J. W. Han: J. Korean Inst. of Metals and Materials, 37 (1999) 1081 (Korean)