Do you know these ten additives in hydraulic oil
Release time:
2022-05-11
With the development of hydraulic technology, the requirements for hydraulic oil are getting higher and higher. The performance of the base oil itself is far from meeting the various requirements of the hydraulic system. It is necessary to add various additives to improve the performance of the base oil. At present, almost all hydraulic oils used in hydraulic systems contain additives with various functions.
The additives of hydraulic oil are roughly divided into two categories: one is the additives that improve the physical properties of the oil, such as oiliness agents, antiwear agents, tackifiers, antifoaming agents and pour point depressants. The other category is additives that improve the chemical properties of oil, such as antioxidants, rust inhibitors, antifungal agents, demulsifiers and metal passivators.
Oil-based agent is a substance with strong polarity. At low temperature and pressure, it can adsorb on metal surface, form a firm adsorption film, prevent direct contact between metal and metal, improve oil film strength and reduce metal friction and wear.
In hydraulic fluids, commonly used oily agents are: oleic acid, sulfurized whale oil (T401), sulfurized cottonseed oil (T404), sulfurized olefin cottonseed oil (T405), dimer acid (T402), etc.
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