1 a reasonable choice of hydraulic components hydraulic cutting machine, to avoid loss of flow of oil, should be increased according to the hydraulic system working pressure and the maximum flow through the valve to select the hydraulic components. Select the overflow valve, the maximum flow rate of hydraulic oil was selected; selection of throttle valve control valve, you should also consider the minimum stable flow; other valves should be according to the access circuit required for maximum flow and maximum flow through the valve selection, should not exceed the rated flow rate of 20
2 reasonable adjustment of hydraulic pressure valve in the system pressure, as long as the hydraulic equipment to meet the normal operation of the case, as far as possible to take a lower pressure. Therefore, in the oil circuit with the back pressure valve, the pressure of the back pressure valve is adjusted to ensure the stability of the working speed. For special hydraulic equipment, the pressure is adjusted according to the back pressure and the friction force in the cutting tool system.