Holding time is determined by the solidification time of the gate. We decide it according to the weight.
保压时间的确定以浇口冷凝为依据。通过产品称重来确定。
The results show that with different location of risers the solidification time is delayed over 80 percent.
结果表明，冒口安放处铸件的凝固时间延长80％以上，尤以热节处安放冒口凝固时间延长率最大。
Plate shaped casting always have longer solidification time as compared with those of cylindrical castings.
实验结果表明：(1)平板铸件的凝固时间均大于短圆柱体铸件的凝固时间。
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