PVD vacuum coating machine is affected by conductance when vacuuming
The mezzanine space has a large gas storage effect. The interlayer space has a large volume and the surrounding material has the lowest out-gassing rate, so it can store a large amount of gas released from the material in the insulation layer of the vacuum device.
The stored gas is pumped out faster. Therefore, when re-evacuating, the gas stored in the space can be quickly pumped away by the vacuum pump.
For the liquid nitrogen container, the gas heat flushing process is used first, and then the vacuum device intermittent exhaust process is used in the formal exhaust. As a result, the actual vacuuming time can be further shortened to 24h when the air volume is the same as the continuous evacuation 72h.
Vacuum coating technology is a novel material synthesis and processing technology, and it is an important part of the field of surface engineering technology.
Vacuum coating technology is the use of physical and chemical means to coat a solid surface with a special performance coating, so that the solid surface has wear resistance, high temperature resistance, corrosion resistance, oxidation resistance, radiation protection, conductivity, magnetic conductivity, insulation and decoration And many other superior properties that are superior to the solid material itself, to achieve the effect of improving product quality, extending product life, saving energy and obtaining significant technical and economic benefits. Therefore, vacuum coating technology is hailed as one of the more promising and important technologies, and has shown attractive market prospects in the development of high-tech industrialization.
It is mainly used for coating under high vacuum, and it is used in many industries, such as automobile, medical, transportation, machinery, service and other industries, and it is also a coating equipment that is very close to people's lives.
Vacuum coating equipment is an important part of the coating industry. Without advanced and efficient coating machines, there would be no modern coating industry.
Vacuum coating will encounter film drop. What is the reason for this situation and how to solve these problems?
1, surface cleanliness
The surface cleanliness of the product is not enough. Consider the argon amplification and longer time when cleaning the ion source.
2, problems in the cleaning process
The cleaning is not in place before plating, or the cleaning fluid is replaced.
3. The problem of craftsmanship
Whether there is any change in the process parameters, make appropriate adjustments in the coating time and current.
4. The problem with the target material
Whether the titanium target is poisoned, check and replace it.
5. Whether the vacuum chamber is leaking
Perform a leak detection.
6. Product surface oxidation
There are many reasons for oxidation, so you can judge and deal with it yourself.
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