International Journal of Mechanical Engineering

In the fields of petrochemicals and energy power, the performance of metal hard-sealed ball valves under high-temperature and high-pressure conditions directly affects system stability. This paper elucidates the failure mechanisms of metal hard-sealed ball valves in such environments, covering factors like wear on sealing surfaces and material fatigue. A life prediction model based on material properties and operating parameters is constructed, and reliability theory is applied for systematic analysis. By quantifying key indicators such as wear rate and fatigue life, optimization strategies to enhance reliability are explored. The research findings provide theoretical basis and technical support for the selection, maintenance, and performance improvement of metal hard-sealed ball valves under high-temperature and high-pressure conditions.

High temperature and pressure; Metal hard sealed ball valve; Life prediction; Reliability analysis; Optimization strategy