Machining of Grey Cast Iron Using Advanced Ceramic Tool Materials

  • D. K. Aspinwall
  • W. Chen


The paper outlines the results of a comprehensive series of machinability tests on grey cast iron bars containing varying proportions of ferrite/ pearlite. The tools used were coated carbide, zirconia-toughened alumina, silicon nitride (sialon) and cubic boron nitride. A high speed lathe was employed and tests were performed at cutting speeds of up to 1100 m/min.

In terms of cutting edge life, based on a flank wear criteria, the alumina tools proved the most durable over the complete range of cutting speeds employed, irrespective of changes in workpiece microstructure. With cast iron bars containing a predominantly ferritic microstructure the alumina tools provided a 10–15 x improvement in tool life over the less conventional sialon and cbn ceramics. Though less dramatic, the results when machining the fully pearlite bars (83–85% pearlite) show a similar trend however the VT curve plotted for one of the two different types of cbn compact used, shows the tool life to increase dramatically as the cutting speed is increased.


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  1. 1.
    ANON, (1985) Modern Castings 19th Census of World Casting Production. Modern Casting Dec P28-29Google Scholar
  2. 2.
    BUSINESS STATISTICS OFFICE (1985) Business Monitor PO3111 3rd Quarter.Google Scholar
  3. 3.
    E. M. TRENT (1984) Metal Cutting 2nd Edition Published by Butterworths ISBN 0–408-10856-8.Google Scholar
  4. 4.
    AMERICAN SOCIETY OF METALS Metals Handbook of Machining. Vol.3.Google Scholar
  5. 5.
    V. K. SARIN & S. T. BULJAN (1983) Advanced Silicon Nitride Based Ceramics for Cutting Tools. SME Technical Paper Ref MR83-189.Google Scholar
  6. 6.
    KENNAMETAL Kyon 3000 Phamplet No. MM8503.Google Scholar
  7. 7.
    B. R. BALLINGER (1985) CBN Inserts Bore Soft Cast Iron. American Machinist October p90, 91.Google Scholar
  8. 8.
    E. LURGER, J. S. TEBER, U. FROMMHERZ & M. OBELOER (1982) Machining Cylinder Bores at BMW Industrial Diamond Review Vol. 42 No.490 P135-138.Google Scholar
  9. 9.
    J. T. BROSKEA (1987) High Speed Machining of Grey Cast iron with Polycrystalline Cubic Boron Nitride. Presented at SME Advanced Machining Concepts Seminar, Dearborn, Michigan/ May 6–7.Google Scholar
  10. 10.
    D. K. ASPINWALL (1984) Superhard Tooling, Ten Years On. Metalworking Production, November p90-98Google Scholar
  11. 11.
    P. J. HEATH, (1985). Structure Properties and Applications of Polycrystalline Cubic Boron Nitride. SME Superabrasives 85 New Developments in-Diamond CBN April 22–25 Chicago USA p1-10 to 1–47.Google Scholar
  12. 12.
    A. S. KAMENKOVICH & L.G. DERECHIN, (1976) Milling Hardened Steel and Cast iron with CBN Face Mills. Stank I Instrument Vol 47 Issue 12 PP 27–28 (Machines & Tooling Vol. 47 No.12 pp 34–36).Google Scholar
  13. 13.
    R. M. SVIRINSKII (1980). Milling Cast Iron Parts with Superhard Tools Instead of Grinding. Stanki I. Instrument Vol. 51 Issue 9 pp 25–28 (Machines & Tooling. Vol. 51 No. 9 PP31-34.Google Scholar
  14. 14.
    V. YU MALYSHKO (1984) Use of CBN Tooling in the Automotive Industry. Soviet Engineering Research V4 nll pp 64–66.Google Scholar
  15. 15.
    D. K. ASPINWALL, M. TUNSTALL & R. HAMMERTON (1985), Cutting Tool Life Comparisons. Proceedings of the 25th International MTDR Conf held at Birmingham, England.” pp 269–278.Google Scholar

Copyright information

© Department of Mechanical Engineering University of Manchester Institute of Science and Technology 1988

Authors and Affiliations

  • D. K. Aspinwall
    • 1
  • W. Chen
    • 2
  1. 1.Department of Mechanical EngineeringUniversity of BirminghamUK
  2. 2.Department of Mechanical EngineeringTaiyuan Institute of MachineryChina

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