This standard specifies specific method to determine wear characteristic of petroleum hydraulic fluids in a high pressure constant volume vane pump.
This standard is applicable to determination of wear characteristic of petroleum hydraulic fluids.
11.4L of sample is cycled for 100h through the rotating vane pump and the operation condition is: 13720kPa±274.4kPa 1200r/min±60r/min; when the sample viscosity is 50.6mm2/s or lower than 50.6mm2/s at 40℃, the test temperature is 65.6℃±3℃; when the viscosity is larger than 50.6mm2s, the test temperature is 79.5℃±3℃. The total abrasion loss (mass loss millligram numbers of stator and the vane) of the pump is used as the test result. The total amount of the sample for a single test is 20L.
4 Equipments and Materials
4.1 Equipments
4.1.1 Driving system: minimum power is 11kW.
4.1.2 Removable pump core vane pump: 104C or 105C pump capacity is 28.4 at the conditions of 6860kPa, 1200r/min and 49℃.
4.1.3 Oil tank volume is 18.9L with a 60-mesh filter sieve at the outlet.
4.1.4 Pressure control valve at pump outlet.
4.1.5 Temperature control gear.
4.1.6 Temperature indicator: with appropriate sensor elements, used for indicating the inlet and outlet temperature of the pump.
4.1.7 Inlet and outlet pressure indicator of pump.
4.1.8 Heat exchange system (heating and cooling): minimum heat interchanging area is 1.4m2.
4.1.9 25μm middle oil filter.
4.1.10 Flow measuring device.
4.1.11 Low oil level, high and low temperature/pressure, low water pressure and motor overload safety systems.
4.2 Materials
4.2.1 Coal oil: in accordance with No.260 in GB 1922.
4.2.2 Benzol: in accordance with GB 3405.
4.2.3 Solvent naphthas: in accordance with requirements of No.190 in GB 1922.
