IJE TRANSACTIONS A: Basics Vol. 15, No. 4 (November 2002) 365-372   

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A. Farzad

Department of Mechanical Engineering, University of Sistan and Baluchistan 
Zahedan, Iran, farzad@yahoo.com
( Received: August 29, 2000 – Accepted in Revised Form: April 09, 2002 )

Abstract    In any metal forming process, both the strain rate and deformation rate depend on the die profile. The die profile also, is responsible for the non-uniformity of the deformation along the cross-section. These affect the quality and mechanical properties of the product. Therefore, if a die is designed, in which the affecting variables can be controlled spontaneously it is hoped to obtain a product with a desired quality. In this paper, the effect of the die profile on the mechanical and metallurgical properties of the product is investigated.


Keywords    Tool Design, Extrusion, Redundant Shearing Strain



1. Farzad, A. and Blazynski, T. Z., “Geometry Factor and Redundancy Effects in Extrusion of Rod”, J. Mech.Work. Tech., Vol. 19, (1989), 357-372.

2. Farzad, A., “Rationalization of Tool Design in Extrusion”, Ph.D. Thesis, University of Leeds, England,(1988).

3. Pearson, C. E., and Parkins, R. N., “The Extrusion of Metals”, Chapman and Hall, London, (1960).

4. Nagpal, N., “Analysis of Plane Strain Extrusion Through Arbitrarily Shaped Dies Using Flow Functions”, J. Eng., Ind., Vol. 99, No. 3, (1977), 754-759.

5. Hundy, B. B. and Singer, A. R. E., “Inhomogeneous Deformation in Rolling and Wire Drawing”, J. Inst.Met., Vol. 83, (1954-55), 401-407.

6. Blazynski, T. Z., (ed.), “Design of Tools for Deformation Processes”, Elsevier Pub., (1986).

7. Atkins, A. G., and Caddel, R. M., “The Incorporation of Work-Hardening and Redundant Work in Rod-Drawing Analysis", Int. J. Mech. Sci., Vol. 10, (1968), 15-28.

8. Pierti, M. and Frisch, F., “Metal Flow Through Various Mathematically Contoured Extrusion Dies”, Proc. 5th N.A. M. R. Conf., (1977), 99-113.

9. Chen, C. T. and Ling, F. F., “Upper Bound Solution to Axisymmetric Extrusion Problems”, Int. J. Mech. Sci., Vol. 10, (1968), 863-879.

10. Samanta, S. K., “A New Die Profile with High Process Efficiency”, Appl. Sci. Res., Vol. 25, (1971), 54-64.

11. Farzin, M., “Sheet Metal Forming by a Pressure Medium", International Conference of Engineering Applications, Sharif University, Iran, (1992), 514-521.

12. Blazynski, T. Z., “The Theoretical Method of Designing Tools for Metal Forming Processes”, Metal Forming, Vol. 34, No. 5, (1967), 143-150.

13. Inoue N. and Nishihara M., “Hydrostatic Extrusion, Theory and Applications”, Elsevier Pub., (1985), 16-19.

14. Laue, K. and Stenger, H., “Extrusion, Processes, Machinary and Tooling”, A.S.M., (1981), 19-24.



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