连铸结晶器非正弦振动引入非正弦振动因素而具有最佳振动模式特点，非正弦振动因素的确定是实施高拉速连铸和提高铸坯质量的关键。本文结合生产实际和具有最佳振动模式特点的非正弦振动形式，对振动过程参数和结晶器内摩擦力进行分析，给出1.8 m•min-1及2.0 m•min-1拉速时的非正弦振动因素值，并讨论了拉速提高时非正弦振动因素的变化规律。结果表明：1.8 m•min-1及2.0 m•min-1拉速时的非正弦振动因素适宜值为0.2，与现场应用值一致；振动频率及振幅不变，拉速由2.0 m•min-1升至2.2 m•min-1时，非正弦振动因素值可相应增至0.25以改善振动效果。
Non-sinusoidal oscillation factor was introduced into non-sinusoidal oscillation to make it take on the virtues of optimum mode, so the determination of it is very important to actualizing high speed casting with high quality. Combined with actual data and a non-sinusoidal oscillation profile with virtues of optimum mode, oscillation process parameters and friction force in mold were analyzed, rational factors at 1.8 m•min-1 and 2.0 m•min-1 casting speed adopted this profile were given, and the rule of factor change when the casting speed increased was also discussed. The results show that the rational factor at 1.8 m•min-1 and 2.0 m•min-1 casting speed was 0.2, it is consistent with practical system, under the situation of frequency and amplitude invariable, the factor should be increased to 0.25 to ameliorate oscillation effect real time when casting speed enhanced to 2.2 m•min-1 from 2.0 m•min-1.
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