The effect of the main processing parameters on the geometry of amorphous metal ribbons during planar flow casting (PFC)
The effect of the main processing parameters on the geometry of amorphous metal ribbons during planar flow casting (PFC)
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DOI：
10.1007/bf00549809
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发表时间：
1984-10
影响因子：
4.5
通讯作者：
H. Fiedler;H. Mühlbach;G. Stephani
中科院分区：
文献类型：
--
作者：
H. Fiedler;H. Mühlbach;G. Stephani
报道了用一些非晶态合金进行的 PFC 实验工作。研究的主题是主要加工参数与所得带材厚度之间的关系。应用伯努利方程的计算揭示了带材厚度与基底速度、喷射压力、喷嘴槽宽度和坩埚轮间隙距离之间的关系。来自大量实验的经验数据与计算结果非常吻合。通过小间隙距离的熔融纺丝可以获得表面光滑、截面精确的带材。通过形貌测量和高速运动图片展示了带材表面受限熔池的效率。表面张力测量结果已用于解释熔体温度对带材厚度的影响。计算和实验数据是实际使用 PFC 工艺生产具有预定精确横截面的带材的基础。
Experimental work on PFC performed with some amorphous alloys is reported. The subject of the investigation is the relationship between the main processing parameters and the resulting ribbon thickness. Calculations applying Bernoulli's equation reveal the relationship between the ribbon thickness and substrate velocity, ejection pressure, nozzle slot breadth and crucible wheel gap distance. Empirical data from numerous experiments are in good agreement with the calculations. Ribbons with smooth surfaces and precise cross-sections can be obtained by melt spinning with a small gap distance. The efficiency of a constrained melt puddle on the ribbon surface was exhibited by topographic measurements and high-speed motion pictures. Results of surface tension measurements have been used to explain the effect of the melt temperature on the ribbon thickness. Calculations and experimental data are a base for practical use of the PFC process in the production of ribbons with predetermined precise cross-section.