The Radial Piston Approach to the Explosive Autofrettage of Thickwalled Forging Dies

  • M. Kaplan
  • H. Glick
  • W. Howell
  • V. D’Souza
Chapter

Summary

A new process for obtaining residual compressive hop stresses at the bore of thickwalled forging dies is presented. The process uses explosive energy in a controlled manner to produce plastic flow in the die. High residual stresses are generated as the applied pressures decay. A theoretical model of the process is developed which predicts residual stress and deformation as a function of the material properties and geometry of the system and the characteristics of the explosive. Experimental data is presented and compared with analytical results. The experiments demonstrate the validity of the analysis and the process itself. The application of explosive autofrettage to a specific production forging die is described. The process is compared with existing methods for producing residual stresses in thickwalled cylinders.

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References

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Copyright information

© Macmillan Publishers Limited 1973

Authors and Affiliations

  • M. Kaplan
  • H. Glick
  • W. Howell
  • V. D’Souza
    • 1
  1. 1.University of DenverDenverUSA

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