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.
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