Accuracy: dimensional stability, low mold shrinkage, low thermal expansion rate.
精确度：尺寸稳定性极佳，模塑收缩率低，热膨胀率低。
Using average shrinkage rates of injection-molded parts to decide the dimension of mold cavity can not satisfy the demand of high precision injection-molded parts.
采用一般的平均收缩率方法来确定模具型腔的成型尺寸，已难以满足精密注塑成型制品的精度要求。
It is noted that tool shrinkage meets existing mold dimensions and these wollastonite products are considered a direct drop in for existing applications.
新产品的收缩尺寸符合现有的模具，这些硅灰石产品可以直接在现有的应用领域中作为替代品使用。
The pressure compresses the polymer and allows more materials to flow into the mold. Shrinkage is reduced and better quality moldings are produced.
高压压缩了聚合物并能使更多的材料流人模腔。这样，“收缩”就减少了，生产的成型件的质量就得以提高。
Therefore, if molds were filled at atmospheric pressure, "shrinkage" would make the molding deviate from the SHAPE of the mold.
因此，如果在大气压下向模子充料，成型件会因“收缩”而与模子的形状形成偏差。
Influence of the initial temperature fields and mold hardness on the shrinkage defect of ductile iron casting by EPC process was mainly investigated in this paper.
本文主要讨论了初始温度场和铸型硬度对消失模铸造球墨铸铁件收缩缺陷的影响。
Shrinkage is one of the main factors influencing the plastic product size precision, was indeed molding mold design size of the main parameters.
一般要求的塑料制品通常只按有关手册或资料大致确定塑料收缩率的大小，精密要求较高的塑料制品要求制作样条模来验证塑件的正确收缩率。
For shrinkage and sink reduction, molds can be pre-pressurized with gas before melt is injected, or gas can be introduced between the non-appearance side of the part and the mold.
为了减少收缩和塌陷，在填充前可以用气体给模具加预压，或者可以在非表观面与型腔表面之间注入气体。
Drying the materials in a restricting mold diminished the horizontal shrinkage, and the vertical shrinkage was higher than that in the mold-less drying.
材料置于模具中进行干燥可以消除水平方向的收缩，但高度方向的收缩率大于无模具干燥下的收缩率。
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.
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。
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