How to choose the hydraulic oil of the pipe bender?
Release time:
2024-07-05
Anti-oxidation stability of pipe bender. The anti-oxidation stability of the pipe bender
Anti-oxidation stability of pipe bender. The anti-oxidation stability of the pipe bender refers to the ability of low resistance to chemical reactions with oxygenates when the oil temperature rises. Practice shows that the oil temperature every 10 ℃, the chemical reaction rate of progress about doubled. Bender anti-oxidation stability of good bending machine hydraulic oil long-term use is not easy to oxidation, can ensure the normal circulation of hydraulic oil. The hydraulic oil of the pipe bender should have excellent abrasion resistance and lubricity. The intention is to reduce the mechanical conflict and ensure the service life of the hydraulic system of the pipe bender.
Good anti-emulsification and anti-foaming properties. Emulsifying resistance refers to the ability of oil mixed with water and stirred to become emulsion and water separated from it. Anti-foam refers to the oil mixed with air and agitated to form an emulsion, bubbles separated from the oil. After mixing with water or air, the volume modulus of the oil decreases, the compressibility increases, the hydraulic components of the pipe bender move slowly, and it is easy to produce shock and vibration.
Good shear stability. In order to improve the viscosity index of the oil, the oil is often involved in polymethyl acrylate, polyisobutylene and other high molecular polymers. These substances have long molecular chains, and the oil flows through the slit of the hydraulic component. The shearing effect is very large, which often reduces the molecular chain scission and the viscosity-temperature characteristics of the oil. The frequent reversing of the reversing valve during the operation of the pipe bender and the saving of components all require the hydraulic oil to have strong shear resistance.
Excellent viscosity-temperature properties. Viscosity temperature refers to the degree of oil viscosity change with temperature, usually indicated by viscosity index. Stick to the right viscosity. The detailed application depends on the working pressure of the hydraulic system of the pipe bender, the working temperature and the movement speed of the components. High pressure, high temperature should choose high viscosity, high speed movement should choose low viscosity.
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