|
|
|
| Numerical Simulation and Experimental Study of an Ultrasonic Waveguide for Ultrasonic Casting of 35CrMo Steel |
| Gen LIANG1,2,Chen SHI1,2,Ya-jun ZHOU1,2,Da-heng MAO1,2 |
1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, Hunan, China
2. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083,Hunan, China |
|
|
|
|
Abstract To achieve ultrasonic casting of 35CrMo steel, the waveguide unit for introducing ultrasound into liquid steel was studied numerically and experimentally. The structure and length of the ultrasonic waveguide were optimized by modal analysis. The simulation results showed that a T-shaped waveguide unit matched the vibrational system better than an L-shaped unit. The performance of T-shaped waveguide unit was optimized when the length of the ultrasound radiator was 135 mm. The performance of the T-shaped waveguide unit was investigated in ultrasonic casting experiments, and the effect of ultrasound on the microstructure of 35CrMo steel was examined. The experimental results showed that the T-shaped waveguide was able to successfully introduce ultrasound into the 35CrMo melt. In addition, the use of a silicon nitride ceramic radiator avoided high-temperature corrosion in the molten metal. The microstructure of the treated area was significantly refined and equiaxed grains were obtained. The results represented a novel method for ultrasonic casting of steel.
|
|
Received: 26 October 2015
Published: 09 August 2016
|
| Fund:National Basic Research Program of China |
|
Corresponding Authors:
Gen LIANG
E-mail: lianggen@csu.edu.cn
|
|
|
|
| [1] |
Yu Xu,,En-gang Wang,,*,Zhuang Li,,An-yuan Deng,. Effects of vertical electromagnetic stirring on grain refinement and macrosegregation control of bearing steel billet in continuous casting[J]. Chinese Journal of Iron and Steel, 2017, 24(5): 483-489. |
| [2] |
Zheng CHEN,,Qi��jie ZHAI,Jie��yu ZHANG,Hong��gang ZHONG. Effects of Thermal Gradients and Rotational Flows on Grain Growth in 22 t Steel Ingots[J]. Chinese Journal of Iron and Steel, 2016, 23(9): 973-980. |
| [3] |
Xiang-dong HUO,Lie-jun LI,Zheng-wu PENG,Song-jun CHEN. Effects of TMCP Schedule on Precipitation, Microstructure and Properties of Ti-microalloyed High Strength Steel[J]. Chinese Journal of Iron and Steel, 2016, 23(6): 593-601. |
| [4] |
Jia-tao ZHANG,Yu-guang ZHAO,Juan TAN,Xiao-feng XU. Austenite Grain Refinement by Reverse ������� Transformation in Metastable Austenitic Manganese Steel[J]. Chinese Journal of Iron and Steel, 2015, 22(2): 157-162. |
| [5] |
Geng-wei YANG,,,Xin-jun SUN,Qi-long YONG,Zhao-dong LI,Xiao-xian LI,. Austenite Grain Refinement and Isothermal Growth Behavior in a Low Carbon Vanadium Microalloyed Steel[J]. Chinese Journal of Iron and Steel, 2014, 21(8): 757-764. |
| [6] |
Yu-guang ZHAO,Jia-tao ZHANG,Juan TAN,Bing-dong MA. Microstructure Refinement and Property Improvement of Metastable Austenitic Manganese Steel Induced by Electropulsing[J]. Chinese Journal of Iron and Steel, 2014, 21(7): 685-689. |
|
|
|
|
2016, Vol. 23 
