The shell material is made of QT500-7. After casting, tempering and shot peening, the casting stress is eliminated, and the surface accuracy is improved, so that the device can be used for a long time without deformation. The separator rotor and the sealing plate materials are made of special alloy, which guarantees reasonable hardness and surface roughness matching characteristics, and improves the comprehensive service life of the two. A material for wear-resistant material, and the inner surface coating wear-resisting layer, prolong the service life. The shaft is made of forged 40Cr and combined with certain heat treatment to make its strength, plasticity and toughness well matched. The shaft head has high wear resistance and improves the service life of the shaft.
The utility model has the advantages of complicated structure, various connecting holes between each component, and high precision required, so the parts are selected to be processed on the numerical control machine tool, and the positioning error of the holes is accurate to 0.01mm. In this way, the position of the precision of the measurement axis and the measurement point, generating assembly components between the stress of small, high sensitivity and small damping measurement components, so as to ensure the system has high measurement accuracy and sensitivity.