Test method and instrument for skeleton oil seal mold

The performance test of the oil seal has its own unique features. In addition to the development of automated and semi-automatic rubber compound performance testing instruments, foreign countries also pay special attention to the testing methods and instruments that reflect the process performance of rubber compounds and the performance of sealing products. For example, in addition to the processing instrument that reflects the process performance of rubber compounding and molding. The performance tester and the product performance simulation test bench (as shown in the figure) reflecting the performance of the starting friction, the number of dynamic friction, the friction torque, the lip temperature rise, the leakage time and the leakage amount, and the oil seal sealing performance lip tension tester , fluid power oil seal backflow effect observer and so on.

Foreign countries attach great importance to the quality control of the finished product of the oil seal. The hardness of the finished product is generally detected by a micro hardness tester. The radial force of the oil seal is controlled by a radial force tester, and the micro defect of the oil seal lip is detected by a lip open pressure tester.

International standards were developed to control the amount of oil leakage during the oil seal rotation test. The screen display electronic computer control, screen dialogue size and automatic section gauge were developed. However, the testing methods of most domestic manufacturers are still very backward.

There is still no way to carry out a large-scale micro-leakage inspection of the oil seal. Therefore, there is no way to ensure the quality stability of mass-produced products.