A mold oscillating system for continuous casting machines has been developed based on a nonsinusoidal oscillation profile with an online oscillation control capability. A new type of the mold oscillating system is proposed comprising two servomotor-driven eccentric shafts. The principle of operation of a non-sinusoidal oscillation system is described. Based on the analysis of the non-sinusoidal oscillation waveform expressed as a piecewise linear function, the angular speed of a servomotor necessary to realize such oscillations was determined. A procedure for calculating process parameters was developed. The model of synchronized control of the casting speed and oscillation frequency was optimized and process parameters were calculated for the deviation factor of 20% and amplitude equal to 4 mm. The mold oscillating systems of sinusoidal and non-sinusoidal type were compared. The advantages of the non-sinusoidal type of oscillating system were shown, which include a decrease in depth of the oscillation marks on the surface of continuous-cast billet, an improvement in the mold-ingot lubrication conditions, and higher quality of continuous-cast billets.
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References
X. Z. Zhang, Q. G. Liu, W. Huang, et al., “Investigation of non-sinusoidal oscillation waveform function and technological parameters for continuous casting mold,” Iron and Steel., 49, No. 8, 42–46 (2014).
X. Z. Zhang, Y. M. Fang and H. Y. Wang, “New type waveform function construction of non-sinusoidal oscillation for continuous casting mold,” Chin. Mech. Eng., 24, No. 24, 3375–3379 (2013).
A. Yu. Tsuprun, A. V. Fedosov, V. V. Kislitsa, et al., “Study of the effect of the characteristic of harmonic mold oscillation regimes on the surface quality of continuous cast ingot,” Metallurg., 7, 40–44 (2012).
Y. M. Fang, G. Y. Li, J. X. Li, et al., “Modeling and analyzing for oscillating system of continuous casting mold driven by servo motor,” Chin. J. Sci. Instr., 35, No. 11, 2615–2623 (2014).
C. Q. Li, L. J. Sun, Q. H. Yuan, et al., Hydraulic Oscillator of Slab Mold, Pat. 200810048798.1, China (2008).
Y. Ma, X. D. Wang, X. Y. Zang, et al., “Research of oscillation of hydraulic oscillator for slab continuous caster,” Iron and Steel, 42, No. 7, 34–37 (2007).
Z. H. Tian, L. Tian, Y. H. Zhou, et al., “Development and application of non-sinusoidal oscillation system,” Iron and Steel, 39, No. S, 623–629 (2004).
X. Z. Zhang, X. K. Li, X. R. Zheng, et al., “Study of non-sinusoidal oscillation of mold driven by ellipse gears,” Chin. J. Mech. Eng., 40, No. 11, 178–181 (2004).
X. Z. Zhang, X. R. Zheng, Q. G. Liu, et al., “Investigation and application of non-sinusoidal oscillation technique of mold,” J. Iron Steel Res. Int., 20, No. 12, 19–24 (2013).
H. P. Yang, X. K. Li, X. Z. Zhang, et al., “Harmonic resonance in non-sinusoidal oscillation of mold,” Chin. J. Mech. Eng., 43, No. 7, 207–212 (2007).
X. K. Li, H. P. Yang, and L. D. Yang, “Low-frequency resonance of mold driven by oval gears,” Chin. J. Mech. Eng., 44, No. 5, 231–237 (2008).
L. P. Zhang, X. K. Li, H. P. Yang, et al., “Non-sinusoidal wave and process parameters of anti-parallel four-barlinkage,” Chin. J. Mech. Eng., 45, No. 5, 301–306 (2009).
L. P. Zhang, X. K. Li, Y. F. Yao, et al., “Study on cascaded whole-leaf spring oscillation mechanism for mold in continuous casting,” Ironmak. Steelmak., 37, 205–210 (2010).
L. P. Zhang, J. X. Wang, Y. D. Wu, et al., “Dynamic characteristics analysis on the periodical time-varying parameter system for the mold,” J. Mach Des., 28, No. 11, 49–54 (2011).
L. P. Zhang, J. X. Wang, Q. H. Lu, et al., “Research on the elastic vibration response of new non-sinusoidal oscillation system for the mold,” Chin. J. Mech. Eng., 47, No. 19, 91–96 (2011).
X. Z. Zhang, C. Zhou, P. F. Liu, et al., “Investigation of waveform and technological parameters for non-sinusoidal oscillation of mold driven by double eccentric shafts,” Chin. Mech. Eng., 27, No. 23, 3125–3129 (2016).
X. Z. Zhang, H. T. Zhu, A. K. Tieu, et al., “An investigation of mechanical non-sinusoidal oscillation of continuous casting mold,” Adv. Mater Res., 264–265, 337–342 (2011).
X. Z. Zhang and X. K. Li, “Study of non-sinusoidal oscillation of mold driven by double eccentric shaft,” Heavy Mach., 4, 20–22 (2005).
C. Zhou, X. Z. Zhang, F. Wang, et al., “Mechanism analysis of non-sinusoidal oscillation of continuous casting mold synchronously driven by double servomotors,” J Iron Steel Res. Int., 24, No. 12, 251–257 (2017).
K. Feng and Z. W. Han, “Optimization design on synchronization control model of hydraulic slab mold oscillation,” Foundry Technol., 30, No. 10, 1326–1329 (2009).
X. K. Li and D. M. Zhang, “Technology of the mold oscillation in continuous casting,” Metallurgical Industry Press, China, Beijing (2000).
X. K. Li, X. M. Wu, Y. M. Fang, et al., “Method to construct waviness function of mold non-sinusoidal oscillation,” Chin. J. Mech. Eng., 36, No. 1, 67–70 (2000).
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Translated from Metallurg, Vol. 63, No. 6, pp. 47–54, June, 2019.
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Zhou, C., Zhang, X., Wang, F. et al. Mold Oscillating System with Optimized Non-Sinusoidal Oscillation Profile. Metallurgist 63, 585–597 (2019). https://doi.org/10.1007/s11015-019-00864-1
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DOI: https://doi.org/10.1007/s11015-019-00864-1