【摘要】 用自行设计的砂型回弹测试仪,检测了高压压实与气冲紧实两种高紧实度砂型的回弹,运用型砂微变形理论和流变学理论,对测试结果进行对比分析,阐述了气冲造型比高压造型砂型质优而铸件尺寸精度高的原因。更多还原

【Abstract】 During the processes of air impulsing and highpressure squeezing of green sand,It was respectively measured the springback value applying the springback tester designed by ourselves. Based on the theory of green sand micro-deformation and the theory of rheology, the test results were analyzed. The reason that sand mould quality and casting dimension precision by air impulsing are good in comparison with highpressure squeezing is expatiated.更多还原