1. Cold roll forming machine hydraulic oil viscosity to be appropriate. Viscosity is an important indicator to test the standard of hydraulic oil, viscosity is small will lead to an increase in leakage, which will affect the efficiency of cold roll forming machine; if the viscosity is large will increase the loss of friction, serious cold roll forming machine hydraulic system or even out of the jamming situation.
2. Good performance of the hydraulic oil viscosity temperature. Cold roll forming machine work, with the system's transmission oil temperature will rise, if the viscous temperature performance of the hydraulic oil is too poor, it will make the viscosity of the hydraulic oil drops significantly, which will cause poor lubrication, pressure leakage increases, and then it will affect the efficiency of work. Therefore, the working temperature of hydraulic oil should be kept within the working temperature variation range, and the viscosity variation interval must be small. Generally, the temperature index of hydraulic oil should be above 90 to be considered standard.
3. The antioxidant properties of the hydraulic oil should be good. Cold roll forming machine in the work, with the gradual increase in hydraulic oil temperature, hydraulic oil will be more and more prone to oxidation and deterioration, we call it emulsification, especially in high temperature conditions, emulsification rate is very fast, so we need to choose hydraulic oil with high oxidation resistance of hydraulic oil.
