Rotary Vane Vacuum Pump for Surface Treatment

Vacuum technology is widely used in various processes, such as vacuum smelting furnace, RH vacuum treatment, vacuum spraying, vacuum distillation, vacuum concentration, vacuum welding, vacuum casting, vacuum coating, vacuum surface treatment, vacuum cathode ray tube, vacuum drying, vacuum sterilization, food packaging, development and utilization of solar energy, particle accelerators, controlled nuclear fusion, and aerospace.

Today, with the development of manufacturing industries such as semiconductor devices, flat panel displays, magnetic and opto-magnetic memory devices, the rotary vane vacuum pump is the key to achieving the desired results in the production system of these surface devices. 

The preparation of film layers in vacuum includes plating crystalline metal, semiconductor, insulator and other elemental or compound films. Although chemical vapor deposition also uses vacuum methods such as reduced pressure, low pressure or plasma, vacuum coating generally refers to the deposition of thin films by physical methods. Rotary vane vacuum pump play a vital role in the coating industry, surface treatment and drying. 

rotary vane vacuum pump     rotary vane vacuum pump

Why is Surface Treatment Necessary?  

The reason is very simple. During processing, transportation, storage, etc., the surface of the workpiece often has oxide scale, rust molding sand, welding slag, dust, oil and other dirt.

If the coating can be firmly attached to the surface of the workpiece, the surface of the workpiece must be cleaned before painting. Otherwise, it will not only affect the bonding force and corrosion resistance between the coating and the metal, but also make the base metal even if there is a coating.

It can also continue to corrode under the protection of the layer, causing the coating to peel off and affecting the mechanical properties and service life of the workpiece.

Therefore, the surface treatment of the workpiece before painting is an important guarantee and measure to obtain a high-quality protective layer and prolong the service life of the product. 

Surface treatment is a process of artificially forming a surface layer with different mechanical, physical and chemical properties of the substrate on the surface of the substrate. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. 

How can Rotary Vane Vacuum Pump Effectively Prevent Pollution? 

For rotary vane vacuum pump, the most important factor affecting the use of power is the vacuum drop formed by vacuum pollution.

What is vacuum pollution?

In fact, the water vapor condenses into droplets and mixes in the pump, which can cause vacuum pump parts to rust, thereby forming a vacuum drop. Therefore, user must deal with this pollution as soon as possible. 

The first method is to choose a vacuum pump with gas ballast valve.

The second method is to install an oil separator or an oil-water separator, which can effectively deal with the water vapor entering the vacuum pump.

The third method is to use a liquid nitrogen cold trap or a monotonic agent with strong water absorption to effectively absorb water vapor to solve the problem from the source. 

In surface treatment, the rotary vane vacuum pump will inevitably not produce pollution, and users can prevent pollution according to the above three methods.


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