What is the deterioration of industrial gear oil, what is the deterioration of industrial gear oil?

1. Appearance change The color becomes darker and mixed, resulting in emulsification, and obvious abrasive particles. mechanical impurities and sludge.

2. Viscosity change The viscosity of the oil containing viscosity index improver decreases due to mechanical shearing, while the viscosity increases due to oil oxidation and emulsified sludge.

3. Changes in acid value In oils containing high acid number additives, the decrease in acid value in the early stage of use indicates the consumption of additives, and the increase in acid value in the later stage is the result of oxidation to produce acid products. Increased moisture deterioration of demulsibility resistance. Hydrolysis of EP agents affects lubrication and can cause tooth surface pitting and gluing.

4. The increase of benzene and pentane (petroleum ether) insoluble matter This is the result of the pollution of oxidation products and metal chips and dust at high temperature in the long-term use of oil products.

The main deterioration is: 1. Appearance changes: darker color, emulsification, obvious abrasive particles, mechanical impurities and oil sludge; 2. Viscosity change:

Oils containing tackifiers have a decrease in viscosity due to mechanical shear; The viscosity increases due to oxidation or emulsification of the oil; 3. Change of acid value; In oils containing high acid number additives, the acid number decreases due to the consumption of additives at the beginning of use; In the later stage, due to the oxidation of the oil, the acid value increases; 4. Increased moisture; 5. The insoluble matter of benzene and pentane increases.

2. Viscosity change The viscosity of the oil containing viscosity index improver decreases due to mechanical shearing, while the viscosity increases due to oil oxidation and emulsified sludge.

3. Changes in acid value In oils containing high acid number additives, the decrease in acid value in the early stage of use indicates the consumption of additives, and the increase in acid value in the later stage is the result of oxidation to produce acid products.

4) Moisture increase: the anti-emulsion performance deteriorates, and the hydrolysis of the extreme pressure agent affects the lubrication and may cause pitting and gluing of the tooth surface.

5) The increase of benzene and pentane (petroleum ether) insoluble matter is the result of the pollution of oxidation products and metal chips and dust at high temperature in long-term use of oil.

Turn black and become a silk dragon. Metamorphism. Delamination.

1. Changes in appearance. The color becomes darker and more mixed. Emulsification is produced with obvious abrasive particles, mechanical impurities and sludge.

2. Viscosity change of oil containing viscosity index improver, due to mechanical shear caused by viscosity decrease, and oil oxygen.

Chemical and emulsified sludge cause viscosity to rise.

3. Changes in acid value In oils containing high acid number additives, the decline in acid value at the initial stage of use indicates the elimination of additives.

Consume the acid value in the later stage.

liters are the result of oxidation to produce acidic products.

4. Increase the moisture content.

Deterioration of demulsification resistance, hydrolysis of extreme pressure agents affects lubrication and may cause pitting and erosion of the tooth surface. Glue.

The internal reason is that the stability of the base oil has a certain limit, and it deteriorates with the passage of time of storage and use; In order to improve the comprehensive performance of the oil, various additives are gradually consumed and deteriorated in use. In general, this deterioration is very slow, often taking 2 years or more.

The external cause is the deterioration of oil caused by the mixing of pollutants such as moisture, dust, and metal powder during storage, transportation and use.

Oxidation of the air, water pollution, the generation of sludge after heating, and the debris caused by the wear of mechanical parts.