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casting shrinkage中文是什么意思

  • 浇铸收缩
  • 铸造收缩

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  • The key to prediction of casting shrinkage / porosity lies in ascertaining the critical value of temperature gradient and niyama criterion . the thesis put forward two methods to ascertain the value , one is which is positive - direction and the other is negative - direction . we verify the realistic arithmetic of temperature gradient method and niyama criterion method by experiment , and we can draw a conclusion that the arithmetic is correct and reasonable in most cases and choice of developing tool is sound
    临界梯度值和新山判据临界值的确定是实现缩孔缩松预测的关键,本文提出了确定临界值的正向法和反向法,并以高铬铸铁件缩孔缩松预测和铸造工艺改进为研究对象,应用正向法,确定了温度梯度法的临界值为180 m 。
  • On the basic of the detailed analysis on main causes and main prediction methods of casting shrinkage / porosity , we put forward two methods to describe the solid phase rate of materials solidification . one is liner - distributing method , and the other is parabola - distributing method . and then , we apply the former to the system
    本文在充分分析铸件缩孔缩松产生机理与主要预测方法的基础上,提出了材料凝固固相率的线性分布法和抛物线分布法,并将前者应用于系统中;同时提出了温度梯度法和新山判据法的实现算法,此算法具有一定的灵活性。
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