High Quality Vacuum Coating Polycold Cryochiller

Causes of residual gases such as water steam and oil steam:
Water vapor in the atmosphere can make up between 0 and 4 percent of the volume of the air. Because water vapor particles are numerous water molecules condensed into liquid particles, so that water vapor has gas properties, but also liquid properties, so that the influence of atmospheric pressure on the volume of water vapor particles, less than the influence of atmospheric pressure on the volume of air particles. The lower the atmospheric pressure, the density of water vapor particles is almost constant, and the density of air particles becomes smaller, resulting in water vapor heavier than air, so the lower the air pressure, the greater the water vapor content in the air. Therefore, no matter the oil diffusion pump or molecular pump, it can not be quickly and effectively extracted, so it accumulates more and more, and finally becomes more than 65%~95% of the residual gas. At the same time, because the vacuum pump in the process of use will inevitably produce pump oil evaporation phenomenon, so there will be a small amount of oil steam into the vacuum system.

Hazards of steam and oil steam:
A: due to the existence of water vapor and oil vapor, the vacuum system can not quickly reach the vacuum degree required by customers, resulting in a longer vacuum time and reduced production efficiency; The higher the vacuum required, the higher the ambient humidity, and the more obvious the impact.

B:at the same time, the existence of water vapor, oil vapor, will lead to a decline in film firmness, can not multilayer coating, color imbalance affects the product quality phenomenon.

Under certain conditions, water vapor will ionize, produce oxygen, oxidize the target material, and cause the color of the coating to change. The higher the vacuum required, the higher the ambient humidity, and the more obvious the impact.

Therefore, water vapor and oil vapor are the main harmful gases in the field of vacuum coating and high vacuum acquisition.

Polycold cryochillers is a refrigeration coil can reach below -120ºC placed in the vacuum chamber or the pump port of the oil diffusion pump, using the Meissner principle, fast adsorption of water steam in the vacuum system, oil steam, water steam, oil steam quickly condensed on the surface of the refrigeration coil, effectively shorten the vacuum time 30%~90%, improve the coating quality, Completely solve the film color uneven, easy to fall off and other problems. Therefore,Polycold cryochillers and vacuum pump used together, compared with the use of vacuum pump alone will greatly improve the production efficiency, improve product quality.

Our product advantage:

Rapid cooling, 5 minutes refrigeration to -120ºC, the lowest can reach -145ºC;

Fast adsorption of water steam, oil steam, shorten the vacuum time 60%~95%;

3 minutes of hot gas defrosting, fast return temperature;

Control system using touch screen + Siemens PLC, more elegant;

With local control, remote control interface, compatible with any vacuum system, can be connected to the automatic control system of customer coating machine;

Standby temperature indication;

Maintain long-term continuous work;

A device can be designed with double load output;

Can design double load outlet and return temperature display, the machine temperature display;

Imported brand low temperature compressor, all kinds of control valves using imported parts, stable and reliable operation;

Compressor pressure too high protection, exhaust temperature too high protection;

Easy installation, easy system transformation;

Power off, high water temperature alarm, protection;