① Maintain Adequate Inlet Pressure: Ensure that the inlet pressure at the pump is always above the fluid’s vapor pressure. This can be achieved by using suction pressure amplifiers, keeping the oil reservoir at an appropriate level, and reducing pipe lengths and restrictions to minimize pressure losses in the intake.
② Eliminate Air from the System: It is crucial to ensure that air is not entrained in the fluid. Proper system flushing and bleeding during installation, and regular checks for leaks in suction lines, help prevent air from entering the system.
③ Optimize System Design: Design the hydraulic system to avoid sudden pressure drops and excessive fluid velocity, particularly near pumps and valves. Ensuring adequate pipe diameters, avoiding sharp bends, and reducing fittings and restrictions can help maintain stable pressure conditions.
④ Use Cavitation-Resistant Fluids: Choose hydraulic fluids with good anti-cavitation properties, which can better withstand the pressure fluctuations and maintain stability even under high-demand conditions.
⑤ Install Proper Oil Temperature Control: Maintaining the hydraulic oil within the optimal temperature range reduces the likelihood of cavitation. High fluid temperature reduces the fluid's viscosity, which can lower the pressure required to maintain flow, potentially leading to cavitation. Cooling systems and heat exchangers should be installed to maintain fluid temperature within safe limits.
⑥ Regular Maintenance and Monitoring: Routine inspection and maintenance are essential for identifying early signs of cavitation damage. Installing monitoring systems that can detect cavitation (e.g., pressure and flow sensors) can help detect and mitigate the problem before it causes significant damage.