| LUO Ao-mei,GUO Wei.Research on Surface Strengthening by Ultrasonic Deep Rolling with Longitudinal-Torsional Vibration[J],44(5):106-110 |
| Research on Surface Strengthening by Ultrasonic Deep Rolling with Longitudinal-Torsional Vibration |
| Received:January 08, 2015 Revised:May 20, 2015 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2015.05.020 |
| KeyWord:ultrasonic deep rolling longitudinal-torsional vibration surface strengthening micro-hardness |
| Author | Institution |
| LUO Ao-mei |
Department of Mechanical Engineering, Henan College of Industry & Information Technology, Jiaozuo , China |
| GUO Wei |
Department of Mechanical Engineering, Henan College of Industry & Information Technology, Jiaozuo , China |
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| Abstract: |
| Objective To propose ultrasonic deep rolling with longitudinal-torsional vibration (UDR-LTV) based on ultrasonic machining with longitudinal-torsional vibration and ultrasonic deep rolling, and to study the effects of processing parameters on surface strengthening, so as to verify the application effect of the two-dimensional ultrasonic vibration machining technology in the field of surface strengthening technology. Methods Conventional deep rolling (CDR) and UDR-LTV were applied using the single factor experiment to process aluminum alloy 6061-T651 respectively, then the surface micro-hardness was tested by each set of parameters with the MH-5 digital hardness tester to investigate the influence of static pressure, rotate-speed and feed amount on the surface micro-hardness. The results of the two processing ways in the experiment were compared. Results Within the set parameters, the surface micro-hardness obtained by UDR-LTV was larger than that of CDR under the same processing conditions. The surface microhardness increased at first then decreased with the increase of static pressure and rotate-speed, and decreased at first then increased and decreased at last with the increase of feed amount by UDR-LTV. The surface micro-hardness and static pressure showed an approximate linear relationship, and the surface micro-hardness increased at first then decreased with the increase of rotate-speed, and reduced all along with the increase of feed amount by CDR. Conclusion It is proved that aluminum alloy 6061-T651 may be more effectively strengthened when treated by UDR-LTV. |
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