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A study of erosion in die casting dies by a multiple pin accelerated erosion test

  • R. Shivpuri
  • M. Yu
  • K. Venkatesan
  • Y. -L Chu
Tribologv of Materials

Abstract

An accelerated erosion test was developed to evaluate the erosion resistance of die materials and coatings for die casting application. An acceleration in wear was achieved by selecting pyramid-shaped core pins, hypereutectic aluminum silicon casting alloy, high melt temperatures and high gate velocities. Multiple pin design was selected to enable multiple test sites for comparative evaluation. Apilot run was conducted on a 300 ton commercial die casting machine at various sites (pins) to verify the thermal and flow similarities. Subsequently, campaigns were run on two different 300 ton commercial die casting machines to evaluate H13 die material and different coatings for erosive resistance. Coatings and surface treatments evaluated included surface micropeening, titanium nitride, boron carbide, vanadium carbide, and metallic coatings—tungsten, molybdenum, and platinum. Recent campaigns with different melt temperatures have indicated a possible link between soldering phenomena and erosive wear. This paper presents the details of the test set up and the results of the pilot and evaluation tests.

Keywords

die casting erosive wear washout coatings surface treatments 

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References

  1. 1.
    C. Wick and J.T. Benedict,Tool and Manufacturing Engineers Handbook, Vol. 2, Forming, 4th ed., Society of Manufacturing Engineers, 1984Google Scholar
  2. 2.
    P Tukkaram,Die Cast. Eng., September/October, 1971, p 12Google Scholar
  3. 3.
    J. Worby,Die Cast. Eng., July-August, 1985, p 42Google Scholar
  4. 4.
    S. Malm and J. Tidlund, Sixth Int. Die Casting Congress and Exposition, SDCE paper No. 801,1979Google Scholar
  5. 5.
    H.K. Barton,Foundry, September 1965, p 132–136Google Scholar
  6. 6.
    J.H. Brunton,Proc. of Third Int. Conf. Rain. Eros., 1970, p 81Google Scholar
  7. 7.
    D. Cocks, Flow Predictor Program, Aluminum Die Casting Institute, 1986Google Scholar
  8. 8.
    D. Cocks, Runner Design Program, Aluminum Die Casting Institute, 1986Google Scholar
  9. 9.
    Yeau-Li Chu, S. Cheng and R. Shivpuri, Study of Erosive Wear of Die Materials and Coatings during the Die Coating Process, Report No. ERC/NSM-92-66, National Science Foundation, The Ohio State University, 1992Google Scholar
  10. 10.
    T. Aral and T. Iwama, Carbide Surface Treatment of Die Cast Dies and Die Components, “11th International Die Casting Congress and Exhibitions, Cleveland, Ohio, 1981, p. 92Google Scholar
  11. 11.
    J.V Skoff, ”Extended Die Life and Improved Performance Through Compressive Stress Texturing," 15th International Die Casting Conference, Paper 033, 1989Google Scholar

Copyright information

© ASM International 1995

Authors and Affiliations

  • R. Shivpuri
    • 1
  • M. Yu
    • 1
  • K. Venkatesan
    • 1
  • Y. -L Chu
    • 2
  1. 1.Department of Industrial, Welding and Systems Engineering, Engineering Research Center for Net Shape ManufacturingThe Ohio State UniversityColumbusUSA
  2. 2.Ryobi Die Casting, Inc.ShelbyvilleUSA

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