1. Hunan Valin Lianyuan Iron and Steel Co., Ltd., Loudi 417009,Hunan,China; 2. China National Heavy Machinery Research Institute Co., Ltd.,Xi′an 710018,Shaanxi,China; 3. National Engineering Research Center for Equipment and Technology of Cold Rolled Strip,Yanshan University,Qinhuangdao 066004, Hebei,China; 4. Ocean College,Hebei Agricultural University,Qinhuangdao 066003, Hebei,China
Abstract:Aiming at the problems of complex system, expensive equipment and high maintenance cost of non-sinusoidal oscillation device for mold driven by hydraulic servo cylinder, a new type of mold non-sinusoidal oscillation technology with eccentric shaft linkage driven by servo motor was proposed. Firstly, the working principle to realize the non-sinusoidal oscillation technology was described. Secondly, the method for determining the rotation rule of servo motor was given. And for a non-sinusoidal oscillation waveform function, the servo motor rotation speed formula was given. Finally, on the prototype machine, the experiments were carried out. The results show that the servo motor-eccentric shaft-linkage system can realize the non-sinusoidal oscillation waveform precisely, and the equipment runs smoothly. The technology of non-sinusoidal oscillation driven by servo motor-eccentric shaft-linkage system has many advantages, such as lower equipment cost and maintenance cost, the long maintenance cycle, and equipment moving smoothly. This technology can be adapted to high casting speed and helps to promote the slab surface quality. It has the market prospect and the value of popularization.
PARK Y H, PARK H. Dynamic response of mold oscillator interacting with steel slabs[J]. Journal of Iron and Steel Research International, 2016, 23(9): 900.
[2]
CAO M H, LIU Y H, ZHANG X Z.Investigaiong on initial shell solidification and effect of negative strip time on oscillation marks during continuous casting[J]. Metals, 2023, 13(4): 726.
LIU D W, LÜ C, ZHANG J M, et al. Elastodymic analysis of synergistic oscillation system driven by double servomotors for continuous casting mold[J]. Journal of Iron and Steel Research International, 2022, 29(1): 115.
CIBULKA J, KRZOK R, HERMANN R, et al. Impact of oscillation parameters on surface quality of cast billets[J]. Archives of Metallurgy and Materials, 2016, 61(1): 283.
ZHOU C, ZHANG X Z, WANG F, et al. Mechanism analysis of non-sinusoidal oscillation of continuous casting mold synchronously driven by double servomotors[J]. Journal of Iron and Steel Research International,2017,24(3):251.
ZHANG X Z,ZHENG X R, LIU Q G, et al. Investigation and application of non-sinusoidial oscillation technique of mold[J]. Journal of Iron and Steel Research International, 2013, 20(12): 19.
[19]
PARK Y H, PARK H. Dynamic characteristic analysis of mold oscillator including improved gear mesh model and cam profile for eccentric shaft[J]. Journal of Mechanical Science and Technology, 2014, 28(11): 4465.
ZHANG L P, LI X K, YAO Y F,et al. Study on cascaded whole-leaf spring oscillation mechanism for mould in continuous casting[J]. Ironmaking and Steelmaking, 2010, 37(3): 205.
ZHANG X Z, ZHU H T, TIEU A K, et al. An investigation of mechanical non-sinusoidal oscillation of continuous casting mold[J]. Advance Materials Research, 2011, 264/265: 337.