The run-in period is an important part of ensuring the normal operation of the waterjet, reducing the failure rate, and extending its service life. Many people do not pay much attention to the special requirements of using waterjets during this period. They are overloaded for a long period of time, resulting in frequent failures in the early use of waterjets. Newly-assembled components have deviations in geometry and fit size. In the early stages of use, due to alternating loads such as impact and vibration, as well as factors such as heat and deformation, as well as excessive wear, it is easy to make the original tight. The solid parts loosen. Since the newly assembled parts have a small fitting clearance and due to assembly and the like, it is difficult to ensure the uniformity of the fitting clearance, and the lubricating oil (grease) cannot easily form a uniform oil film on the friction surface to prevent wear. This reduces the lubrication efficiency and causes abnormal wear of the waterjet in the early stages. In severe cases, it can result in scratches or seizures on the surface of the precision-matched friction surface, causing failures.
Below 70Mpa high-pressure pump technology has been relatively mature, ultra-high pressure water above 70Mpa still need to use supercharger booster. The working process of the supercharger is generally that the low-pressure oil from the oil pump pushes the large piston of the supercharger to make it reciprocate, and the direction of movement of the big piston is automatically controlled by the reversing valve. On the other hand, the water supply system first purifies the water, and then the pump pumps out the low-pressure water. The low-pressure water entering the supercharger is pressurized by the small piston and the pressure rises. Since the high-pressure water is generated by the continuous reciprocating compression of the supercharger, the piston of the supercharger needs to be reversed, and it is bound to cause the pressure of the water jet emitted from the nozzle to pulsate. In order to obtain a stable high-pressure water jet, the generated high-pressure water needs to enter the accumulator and then flow to the nozzle, thereby achieving the purpose of stable pressure.
Below 70Mpa high-pressure pump technology has been relatively mature, ultra-high pressure water above 70Mpa still need to use supercharger booster. The working process of the supercharger is generally that the low-pressure oil from the oil pump pushes the large piston of the supercharger to make it reciprocate, and the direction of movement of the big piston is automatically controlled by the reversing valve. On the other hand, the water supply system first purifies the water, and then the pump pumps out the low-pressure water. The low-pressure water entering the supercharger is pressurized by the small piston and the pressure rises. Since the high-pressure water is generated by the continuous reciprocating compression of the supercharger, the piston of the supercharger needs to be reversed, and it is bound to cause the pressure of the water jet emitted from the nozzle to pulsate. In order to obtain a stable high-pressure water jet, the generated high-pressure water needs to enter the accumulator and then flow to the nozzle, thereby achieving the purpose of stable pressure.
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