文中根据试验结果提出了型砂性能二次回归试验的变量选择,变量零水平和变量步长的确定及上、下限限制等试验数据。参考文献中提出的方法和数据安排型砂回归试验,可以减少试验的盲目性,避免试验失败。可以较顺利地得到型砂性能最优化控制的回归数学模型。 Based on the test results, this paper proposed variable selection, variable zero level and variable step size determination and upper and lower limit test data of quadratic regression test of sand properties. Reference methods proposed in the data and data arranged sand regression test, you can reduce the blindness of the test, to avoid the test failure. The regression mathematic model of optimal control of sand performance can be obtained smoothly.