证明水玻璃白云石砂的溃散性与铸件的大小、壁厚、浇注温度、吃砂量和打箱时间有关。
The collapsibility of the sodium silicate dolomite sand is controlled by the size, wall, pouring temperature, capacity for sand and draw time of the cast.
模拟结果表明，该浇注系统填充过程平稳，温度场分布均匀，所得压铸件气体夹杂和冷隔缺陷少，整体质量较高。
Simulation results show a smooth filling, uniform temperature distribution and few flaws such as gas inclusion and cold shut. A casting with a good quality was obtained.
叙述化学成分、孕育工艺、铁液温度及浇注系统等因素对薄壁球铁铸件缩孔和缩松形成的影响。
The influence of chemical composition, inoculation process, temperature of molten iron and pouring system on the formation of shrinkage cavity and porosity was described.
在砂型中浇注时，凝固期间铸件外表面温度接近的中心温度，与形状无关。
The outer surface temperature of the sand casting approximates its center temperature in the solidification period and it is independent of the casting shape.
实验测定了化学成分、浇注温度、铸件模数和铸型刚度对球墨铸铁收缩特性的影响。
The effects of casting modulus, pouring temperature. carbon equivalent and mould toughness on the solidification shrinkage of ductile cast iron was investigated experimentally.
模拟结果表明，该浇注系统填充过程平稳，温度场分布均匀，所得压铸件气体夹杂和冷隔缺陷少，整体质量较高。
Simulated results show that obtained parts has few defects, such as inclusion and cold shut due to smooth mold filling and uniform distribution of temperature field.
探讨了铝液变质、晶粒细化、浇注温度及聚苯乙烯模样等对消失模铝铸件针孔的影响。
The effects of modification, grain refinement, polystyrene pattern, pouring temperature on aluminum alloy porosity in LEC process is studied.
然后，本文通过正交试验的方法研究了压射速度、浇注温度和模具预热温度对铸件缩松缩孔缺陷的影响。
By use of orthogonal test design, how the injection speed, pouring temperature and mold temperature effects the casting shrinkage porosity forming is studied.
然后，本文通过正交试验的方法研究了压射速度、浇注温度和模具预热温度对铸件缩松缩孔缺陷的影响。
By use of orthogonal test design, how the injection speed, pouring temperature and mold temperature effects the casting shrinkage porosity forming is studied.
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