通过对型砂三性能自动快速检测试验装置的试验研究表明:采用膜盒差压变送器检测型砂透气性装置和测压环差压变送器测定型砂湿强度装置,可以自动快速地测定型砂的透气性和湿强度。当型砂水分在3.5～7.0％之间时,如提高测试频率,可以分段用电容谐振法测试。 The experimental study on the automatic and rapid testing device for the performance of the molding sand shows that it can measure the molding sand wet strength automatically by using the differential pressure transmitter of the membrane box to measure the permeability of the molding sand and the differential pressure transmitter of the pressure measuring ring Breathability and wet strength. When the sand is between 3.5 and 7.0% moisture content, such as increasing the test frequency, capacitance resonance method can be segmented test.