TC4钛合金薄壁带筋锥形环辗轧充填规律

doi:10.7527/S1000-6893.2015.0150

Abstract

Abstract:

The thin-walled and ribbed conical ring is one of the key underlying components widely used in aerospace industry. Being difficult to precision forming of cross-section of ring due to lack filling of groove profile is the bottleneck problem for this complex profiled ring rolling process. In this work, the key factors influencing the filling behavior, namely the feed amount per revolution, the radii of the main roll and idle roll are discussed. And taking a thin-walled and ribbed conical ring rolling process for TC4 titanium alloy as object, An FE model achieving close-loop control of idle roll with constant feed amount per revolution is established using VUAMP subroutine under ABAQUS environment. Then the influence rules of the feed amount per revolution and the radii of the main roll and idle roll on the filling quality, described by filling ratio and deformation and its uniformity at entrance of the groove profile, are disclosed by comprehensive simulations. The results show that: the filling ratio first increases and then decreases with the increase of feed amount per revolution, indicating that there is an optimum feed amount per revolution best beneficial to filling the groove profile; the deformation at the entrance of the groove profile is small and its distribution is uniform thus beneficial to avoiding the crack defect of that region with increasing feed amount per revolution; it is beneficial to filling the groove profile when decreasing the main roll's radius or increasing the idle roll's radius.

Key words: titanium alloys, thin-walled and ribbed conical ring part, filling rules of groove profile, feed amount per revolution, roll size, FE modeling and simulation

CLC Number:

GUO Lianggang, YANG He, DI Weijia, CHEN Fulong, ZHU Shuai. Filling rules in thin-walled and ribbed conical ring rolling for TC4 titanium alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(8): 2798-2806.

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Filling rules in thin-walled and ribbed conical ring rolling for TC4 titanium alloy

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