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摘要
A mathematical model to the represent liquid flux friction in mold was established by heat-transfer model, heat-stress model and actual data. The effect of non-sinusoidal oscillation amplitude on liquid friction force was analyzed at casting speed of 2.0 m/min, the selection principle and determination method of amplitude were also introduced. The results show that the small amplitude application at certain casting speed can restrict the maximal liquid friction force, increase the flux consumption and decrease the negative strip time. The amplitude should be suitably increased with casting speed to improve the ameliorate oscillation effect. Combined with the casting production, the optimum amplitudes casting speed of 2.0 m/min and 2.2 m/min are obtained as ±4 mm and ±4.5 mm, respectively. The flux film thickness that accords with the practical condition commendably provides guidance to study the mold lubrication mechanism.
- 出版日期2007
- 单位东北大学
