Analysis of lubrication problem of paint baking wire chain

The choice of grease for the chain of paint baking line is very important. The transmission equipment of paint baking line needs to withstand the influence of high-temperature baking for a long time, water vapor and chemical corrosion environment, and the working conditions are extremely bad. Therefore, reasonable lubrication is the key to ensure the normal operation of transmission equipment for a long time.

Briefly summarize the following points:

1. Structural characteristics of the chain

The chain is a winding transmission part, which transmits motion and power by the engagement and disengagement of the chain link and the sprocket teeth. The key point of lubrication of the chain is between the chain hub and the chain shaft, which is also the most prone to wear, which will lead to the elongation of the chain;

2. Service life of the chain:

According to the recommendations of the chain manufacturer, the chain shall be scrapped when the removal length of the chain link exceeds 5% of the total length. The life of a chain without proper lubrication is not more than 5 years, while a well-lubricated chain can work for 15 to 20 years. The key point of lubrication of the chain is between the chain hub and the chain shaft, which is also the most prone to wear, which will lead to the elongation of the chain. However, due to the high temperature working condition, as well as the lack of lubrication auxiliary materials. The service life of the chain is very short.

3. High temperature working condition is the difficulty in lubrication and maintenance of catenary of paint baking line

Requirements for lubrication in high temperature environment: after the workpiece surface is painted, it is necessary to enter the oven to bake the paint, that is to say, the suspension conveyor chain needs to repeatedly enter the high temperature area, and each time into the high temperature area, the time is about dozens of minutes. This requires that the chain lubricant should meet the following requirements:

The base oil of lubricant has suitable viscosity and high viscosity index. It has low carbon and is not easy to volatilization at high temperature. Good oxidation stability, the lubricant will not be quickly oxidized into oxides when it is in contact with air at high temperature.

4, high humidity, acid and alkali environment for lubrication requirements: water and water vapor resistance, lubricants in water is not emulsified, insoluble; Acid, alkali chemical corrosion, especially phosphorous chemical reaction; Rust and corrosion resistance.

5, long-term lubrication requirements

Considering the heavy production tasks of the production line, the time needed for equipment maintenance should be reduced as far as possible, and the lubricant should be long-acting. Or consider a convenient and feasible way of filling.

6. Paint line high temperature chain oil should avoid containing free silicon components, so as not to cause shrinkage of the workpiece.

Conclusion:

Through the above points can clearly help the majority of dealers and users to choose the appropriate paint chain grease.