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October 27, 2022
The antiwear hydraulic oil is developed from antirust and antioxygen hydraulic oil, which has good antirust, antioxygen and excellent antiwear properties. The composition of antiwear hydraulic oil is relatively complex. In addition to antirust and antioxidant, antiwear agent, extreme pressure additive, Metal Deactivator, demulsifier and Antifoam Additive are also added.
For decades, zinc dialkyldithiophosphate (ZDDP) generated by chemical reaction between zinc oxide and organic thiophosphoric acid has been a key additive component in hydraulic oil and most lubricating oils. ZDDP is a multifunctional additive with good anti-oxidation, anti-corrosion and anti-wear effects. It is widely used in various lubricants such as internal combustion engine oil, hydraulic oil and grease. However, in the actual application process, some hydraulic systems contain silver and copper components. If zinc containing anti-wear hydraulic oil is used, it will corrode silver and copper. At this time, ash free anti-wear hydraulic oil should be selected.
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