(哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院，哈爾濱 150001)
摘 要: 對聚苯乙烯模樣性能對金屬液充填消失模過程的影響進(jìn)行了數(shù)值模擬，結(jié)果表明： 模樣性能顯著影響金屬液充型過程的溫度場及充型能力，隨模樣密度或氣化潛熱增加， 金屬液充型過程中溫度降增加， 充型能力下降， 采用低氣化潛熱、低密度、低發(fā)氣性聚苯乙烯模樣有利于提高金屬液的充型能力。最后確定了國產(chǎn)聚苯乙烯珠粒研制開發(fā)方向。
關(guān)鍵字: 聚苯乙烯 消失模 數(shù)值模擬
（School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China）
Abstract:The influence of the properties of polystyrene pattern on the molten metal filling process in lost foam process was numerically simulated. The simulated results show that the properties of the pattern affected the temperature distribution and the fluid flowability remarkably, the temperature drop of the fluid increases and the fluid flowability decreases as the density or the latent heat of vaporization of the polystyrene pattern increased; it is benificial to increasing the fluid flowability and obtain a sound casting by using the polystyrene pattern with smaller latent heat of vaporization, smaller density and lower gas forming property. At last the developing direction of domestic polystyrene beads was suggested.
Key words: polystyrene lost foam process numerical simulation
