Critical value of plastic deformation of green sand has been tested by molding sand multi-tester using computer and sensors.
用计算机技术和传感技术组成系统构成型砂多项性能测试仪，测定湿型粘土砂塑性变形临界值。
2
It demonstrated that the experiment of hardness is likely to upset in the experiment of compression. Hardness tester indenter make matrix metal plastic deformation and viscous flow happen.
结果表明，硬度实验类似于压缩实验中的镦粗，硬度计压头可使金属基体发生塑性变形及粘性流动。
3
Based on the rheology and molding sand micro deformation, elastic modulus of molding sand was measured and investigated with the intelligent molding sand multi property tester developed by ourselves.