Concentrate is an indispensable transmission medium for hydraulic transmission. In order to meet transmission requirements, concentrate should have the following properties:
1. Good viscosity-temperature performance. In the use of temperature range, the viscosity of the oil with the temperature change should be relatively small, that is, the viscosity index should be high.
2. It has good lubricity. The concentrate (liquid) is not only a medium for energy transfer, but also a lubricant for mechanical movement. Only with good lubricity can the machinery work properly.
3. Pure quality, no mechanical impurities, no corrosion.
4. It is not easy to oxidize. Reduce and avoid the formation of oxides when the temperature rises, accelerate the deterioration of oil products and clog the oil circuit.
5. When working under high temperature conditions, the flash point should be high; When working at low temperature, low temperature fluidity is better.
6. Good water separation, high gas extraction, to avoid emulsification and foam.
7. Good compatibility, no dissolving and other harmful effects on seals/hoses, coatings, etc.
