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Why cooling water should be used in vacuum plasma surface treatment process

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24 Jan,2021

Why cooling water should be used in vacuum plasma surface treatment process:

Process cooling water is a commonly used temperature control medium in industrial production. Its application is very wide. According to the types of use, it is mainly divided into dust-free workshop cooling, process equipment cooling, production process cooling, etc., and the application of vacuum plasma cleaning machine surface treatment can be summarized as process equipment cooling. Many people may think, plasma cleaning machine is not the use of low temperature plasma equipment, why will be used in the process of cooling water, and how can it be used correctly? So let's look at it.

vacuum plasma surface treatment process

1, plasma cleaning machine process cooling water application:

(1) the electrode plate of cooling vacuum plasma cleaning machine:
Vacuum plasma cleaning machine produced by plasma temperature is very low, but in use process, if you use a larger power or processing time is too long, can appear electric plate temperature, and plasma cleaning machine is also commonly deal with some of the products is more sensitive to temperature, this is where, according to the requirement of the user by cooling electrode plates in order to achieve the temperature stability of cavity in the purpose of the requirements.

(2) Plasma generator cooling:
The plasma generator of the plasma cleaning machine is the core component of the equipment. Generally, the use of small plasma cleaning machine is smaller, and the heat generated by the plasma generator itself is smaller, and the method of air cooling is generally chosen. The large plasma cleaning machine is the use of large output power of the plasma generator, the work of its own heat is also very large, in order to ensure the stability of the use of equipment, prolong the service life, the use of process cooling water temperature removal method to cool.

(3) Vacuum pump cooling:
Vacuum pump in the process of use without lubricating oil cooling, between the mechanical structure and produced a very high friction temperature, such as vacuum pump in the case of no cooling work, there will be rotor or screw locked, resulting in scrap. Therefore, vacuum pump needs real time cooling in use, the method adopted is to use process cooling water cooling.
In order to reduce the noise of the motor and better protect the motor, the local dry pump in the design will generally choose the water-cooled motor, and the process cooling water is also needed for real-time cooling.

2, plasma cleaning machine process cooling water application:

(1) Process cooling water of plasma cleaning machine:
The process cooling water used by the plasma cleaning machine mainly has two sources, the supply of cooling water and the circulating water supply at the client end. For large plasma cleaning machines, independent cooling water units are required to protect the equipment.

(2) General requirements of process cooling water:
The cooling water temperature of plasma cleaning machine is generally controlled at 20~50℃, the pressure is generally between 0.3~ 0.5Mpa, and the flow rate is generally between 2~7SLM according to the actual needs. According to the practical application, the value range of operation parameters should be determined.

(3) Real-time monitoring and control of process cooling water:
All the parts that need to be cooled are key parts. If the temperature is too high or the pressure is insufficient, the products will be scrapped and the equipment parts will be damaged. Therefore, real-time monitoring is very important.

In general, the plasma cleaning machine cooling water pressure and flow monitoring is completed by the water flow switch, the water flow switch is divided into mechanical and quantitative, need to be applied in series to the intake pipe, when the pressure or flow is too small, the output signal, complete the alarm function of the equipment. Generally, independent water flow switch is installed at the entrance of each temperature control component to ensure its stability and reliability.

By installing a temperature sensor on each part, the chiller signal output, each part comes with a temperature sensor signal output, select the specific implementation method, so as to realize the temperature alarm. In practical application, in order to ensure the stability of the operation of vacuum plasma surface treatment equipment, a variety of methods are usually used at the same time.

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