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離心鑄造鈦合金熔體補縮過程滲流流動物理模擬
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國家自然科學基金重點項目(50434030)


Physical Simulation of Infiltration Flow during Centrifugal Casting Titanium Alloy Melts Feeding
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    摘要:

    采用相似物理模擬法，研究了離心力場下鈦合金熔體補縮過程中滲流流體體積的變化規(guī)律，并與大斷面充型流動進行了對比。結果表明：隨著補縮時間和旋轉速度的增加，補縮過程中滲流流體體積增大；同時隨著流體粘度和多孔介質孔眼數的減小，補縮過程中滲流流體體積也相應增大；當鑄型順時針旋轉時，澆道左側相對于右側，先進行補縮滲流；補縮過程中滲流流動與大斷面宏觀充型流動相比，在相同時間內，滲流流體體積減少

    Abstract:

    By means of similar physical simulation method, the variation of infiltration volume is thoroughly studied during titanium alloy melt feeding in centrifugal field, and compared with the big cross-section filling process. The results show that the infiltration volume in feeding process increases with increasing the feeding time and velocity or decreasing the fluid viscosity and eyelet number of porous medium. When the mould rotates clockwise, the left part relative to the right part in running channel starts feeding and infiltration firstly. The infiltration volume decreases against the big cross-section macro-filling flow in the same time.

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隋艷偉,李邦盛,劉愛輝,郭景杰,傅恒志.離心鑄造鈦合金熔體補縮過程滲流流動物理模擬[J].稀有金屬材料與工程,2009,38(9):1537~1541.[Sui Yanwei, Li Bangsheng, Liu Aihui, Guo Jingjie, Fu Hengzhi. Physical Simulation of Infiltration Flow during Centrifugal Casting Titanium Alloy Melts Feeding[J]. Rare Metal Materials and Engineering,2009,38(9):1537~1541.]
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  • 收稿日期:2008-09-19
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