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Analysis of Two Schemes of Cold Forging of a Hollow Ball

Samołyk Grzegorz, Winiarski Grzegorz

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 4

53--60

The paper discusses the cold forging process of a hollow ball made of aluminum alloy. The forging is carried out in dies with a closed cavity, and the billet is shaped like a tube. Two forging schemes are considered. The first scheme is the primary way of forming from a tubular billet, in which the wall deforms freely and is subject to buckling. The second scheme involves the use of an additional tool in the form of a deformable insert consisting of two rings to counteract the uncontrolled deformation of the billet wall. Experimental and theoretical analysis was carried out to compare the progression of forging shape, strain, forging force and stress.