另外，研究了消失模铸造法铸型表面硬度、界面换热系数的变化规律。
Moreover, the variation law of mold surface hardness and interface heat transfer coefficient were studied.
采用高速摄影法和电极触点法，对干砂消失模铸造金属液的充填形态进行了初步研究。
The pilot study was done on the filling shape of liquid metal in lost foam process with dry sand by using rapid photography method and contact time method.
采用高速摄影法，对灰铸铁件消失模铸造充型形态进行了初步研究。
The filling morphology of gray cast iron melt in lost foam casting was observed by rapid photography method.
采用高速摄影法，对灰铸铁件消失模铸造充型形态进行了初步研究。
The filling morphology of gray cast iron melt in lost foam casting was observed by rapid photography method.
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