Abstract
One of the most promising methods in manufacturing axisymmetric aircraft parts such as disks or hollow shafts is the isothermal roll formation in the state of superplastic deformation (SPD) on specialized reeling machines. Equipment of this class is designed on the basis of calculating the power characteristics expected from these machines. The procedure is efficiently carried out by mathematical modeling. This paper presents a technique for drawing the finite element model of isothermal roll formation in the state of superplasticity as well as the results of this modeling, exemplified by the manufacture of a disk from BT9 heat-resistant titanium alloy. The suggested technique is used in the development of technology and the design of equipment for rolling axisymmetric parts (disks, hollow shafts) from heat-resistant titanium and nickel alloys.
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