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1·The solidification shrinkage mechanism of unsaturated polyester resin is analysized by using free Volume theory in this paper.

本文用自由体积理论分析了不饱和聚酯树脂的固化收缩机理。

2·The effects of casting modulus, pouring temperature. carbon equivalent and mould toughness on the solidification shrinkage of ductile cast iron was investigated experimentally.

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。

3·Is mainly the size effect and solidification, shrinkage, stress and other issues clearly, to avoid or reduce the segregation, iron manhole cover deformation and crack defects.

主要是明显的尺寸效应和凝固、收缩、应力等问题，避免或减少铸铁井盖的成分偏析、变形、开裂等缺陷的产生。

4·The results are very important to understand the solidification characters of steel castings with T conjunction and to estimate the position of the hot-spot in the castings to avoid shrinkage defects.

得到有益于认识铸件中此类接头凝固特性和热节位置的变化规律，对工艺设计者认识和防止成型过程中产生凝固收缩缺陷是很必要的。

5·They also undergo a high shrinkage or reduction in volume during solidification.

它们在固化过程中收缩较大或体积减少较多。

6·It is discussed that adiabatic material, as well as ratio of height and width effected solidification, shrinkage cavity and shrinkage porosity.

讨论了锭模的高宽比、绝热板材质对凝固位置及缩孔疏松的影响。

7·The solidification process of the cross-section A-A of the high pressure inner cylinder is simulated and the shrinkage cavity position is predicated by means of utility software.

使用该软件模拟了高压内缸A - A截面的凝固进程，并预计了该截面上缩孔位置。

8·The solidification process of a driving wheel hub cast with former foundry method was simulated to find out the reason causing shrinkage defects.

对驱动轮轮毂原铸造工艺进行凝固模拟，找出缺陷的成因，并对原工艺进行了改进，采用顶置随形压边浇冒口。

9·By changing the carbon and silicon in a proper way at the same time, the volume expansion or shrinkage feature in the cast iron solidification can be significantly changed.

同时调整碳硅含量，可有效地改变灰铸铁凝固转变过程的体积收缩和膨胀特性。

10·The results indicate that the casting defects are mainly shrinkage porosity and cracks caused by solidification shrink, which mainly presents in the hot spot between the spoke and the rim.

研究表明：轮毂的工艺缺陷主要为缩孔、缩松以及凝固过程中收缩导致的裂纹缺陷，主要分布在轮辋、辐条交汇的热节部位。