Bay, Niels

Christiansen, Peter

Hattel, Jesper Henri

Martins, Paulo A.F.

This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure of a centreline hole in a single compression operation. Friction is also taken into account.The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle

Online Research Database In Technology

Numerical optimization of die geometry in open die forging

http://orbit.dtu.dk/ws/files/59842114/Numerical_optimization_of_die_geometry_in_open_die_forging.pdf

Numerical optimization of die geometry in open die forging

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Online Research Database In Technology