浊度法检测原砂含泥量

Turbidity Method for Detecting Mud Content in Base Sand

含泥量是原砂质量的重要表征参数之一,含泥量通过影响以原砂为骨料的型砂的性能而影响铸件质量。目前原砂含泥量检测以国标检测方法为主,因其操作过程繁琐,耗时较长,不适合铸造车间配砂现场检测。在遵循国标检测方法基本原则的基础上,采用浊度传感器对涡洗之后的原砂进行含泥量测定,开发了一种测量周期短、自动化程度高的快速检测方法及装置。与国标检测方法相比,测试时间减少90%,通过T检验证明,与国标检测法测试结果接近程度为99%。

The mud content is one of the important characterization parameters of the quality of the base sand.It affects the quality of castings by its effects on the mold sand,in which base sand is the aggregate.At present,the detection of mud content in base sand is mainly based on the national standard detection method,and the operation process is cumbersome and time-consuming,so it is not suitable for on-site inspection in sand mixing shop.Based on the basic principles of the national standard detection method,uses a turbidity sensor to measure the mud content of the base sand after vortex washing,and develops a rapid detection method and device with short measurement period and high degree of automation.Compared with the national standard detection method,the test time is reduced by 90%.Through T-test,it is proved that the test results are 99%close to those of the national standard.