Deformation Mechanism of TA15 Shells in Hot Shear Spinning under Various Load Conditions |
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Authors: | Han Dong Zhan Mei Yang He |
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Affiliation: | Soochow University, Suzhou 215006, China;Soochow University, Suzhou 215006, China;Soochow University, Suzhou 215006, China;Soochow University, Suzhou 215006, China;Soochow University, Suzhou 215006, China |
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Abstract: | Using the multi-field coupled analysis model with considering various thermal effects for the hot shear spinning of TA15 titanium alloy thin-walled shells, the deformation mechanism of thermal load conditions and mechanical load conditions have been elucidated. The results show that higher workpiece temperature and mandrel preheat temperature can bring about a smaller temperature gradient in the thickness direction, and the deviation ratio has a complicated effect on temperature difference of the deforming zone and a marked negative effect on the fittability. Moreover, the friction between workpiece and roller has a significant influence on the temperature difference. Increasing roller feed rate increases the temperature difference and decreases the fittability, which is opposite to that of the cold shear spinning, and a larger roller setting angle is favorable to the decrease of temperature difference and the improvement of the fittability. |
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Keywords: | titanium alloy hot shear spinning coupled thermal-mechanical load conditions |
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