Hydraulic oil composition
A technology of working oil and composition, applied in the direction of lubricating composition, petroleum industry, thickener, etc., can solve the problem of insufficient sludge resistance, wear resistance, friction characteristics, water separation and friction reduction of sliding parts. and other problems, to achieve the effect of good energy performance and energy saving
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Embodiment 1~4 and comparative example 1
[0170] Each hydraulic fluid composition having the composition shown in Table 1 was prepared, and the performance was evaluated. The results are shown in Table 1.
[0171] In addition, in Comparative Example 1, a Zn-based commercial oil (hydraulic hydraulic oil) having a viscosity index of 108 was used.
[0172] Table 1
[0173]
[0174] The following facts can be known from Table 1.
[0175] As a result of the high-pressure vane pump test, Examples 1 to 4 all have excellent power consumption and mechanical efficiency. As a result of the FZG test, Examples 1 to 4 all satisfy the ISO standard 10 or higher. As a result of thermal stability, the precipitation amount of the sludge of Examples 1 to 4 was extremely small compared to the Zn-based commercial oil of Comparative Example 1. As a result of the water separability test, it can be confirmed that Examples 1 to 4 can maintain good water separability. As a result of the bonding test, compared with the rubber material, Examples 1 to...
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