Laboratory Reliability Testing Design of Solenoid Operated Directional-Control Valves for Industrial Application

To improve the reliability of high-end hydraulic parts for domestic hydraulic industry, a framework of industrial standard is proposed for reliability testing procedures for solenoid operated directional-control valves. Solenoid operated directional-control valve is one of the most basic components, and the experimental standards for directional valve can be an essential reference for reliability testing for other hydraulic components. Based on the design of the hydraulic diagram of reliability testing for solenoid operated directional-control valves, the experiment procedures include stages of preparation, recording, inspections, data collection and the reliability assessment. Reliability assessment can be derived from data by Weibull distribution. Moreover, safety assessment can also be derived from reliability assessment. Finally, future research work directions are outlined.