A STUDY OF THE MECHANICS OF CLOSED-DIE FORGING. FORGING LOADS AND STRESSES IN CLOSED-DIE FORGING. PART I.
Abstract
Various empirical formulas suggested for predicting the maximum forging load are reviewed. The empirical formulas are very useful in predicting loads for forgings similar to the ones evaluated in deriving these formulas. They do not, however, give any information on local deformations and stresses in a forging. The slab method is used in analyzing plane strain and axisymmetric upsetting between parallel and inclined platens. The determination of flow models representing the deformation and metal flow in closed-die forging is discussed. As a first example, the theory developed has been applied to an axisymmetric forging. The predicted cavity and flash loads agreed well with the experimental results obtained by other investigators. As a second example, the determination of the stress distribution in plane-strain forging of a blade is illustrated. The analyses presented in this report will be helpful in obtaining detailed information on the mechanics of the closed-die-forging process. In the present report, deformations of the upsetting type were studied. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 15, 1969
- Accession Number
- AD0685866
Entities
People
- A. M. Sabroff
- H. J. Henning
- T. Altan
Organizations
- Battelle Memorial Institute