Kneel and beg for solar vacuum tube coating technology Just learning the coating process Which big b

Frequently Asked Questions Handling.

1. Color. The change in the color of the coating is mainly due to the effect of interference, mainly the low-absorption layer and the anti-reflective layer.

Bright yellow: The voltage of the last layer is too high, or the time is too long;

Golden: The voltage of the last layer is too low, and the time is too short;

Red, purple, blue: the last layer is too short;

If the voltage and the voltage of the absorption layer are appropriate, the color basically depends on the thickness of the anti-reflective layer, and the extension over time is basically derived in the following order:

Golden yellow - red - purple - blue violet - blue - bright blue - bright black - bright yellow.

There is no previous change in the sputtering process, and it quickly changes from bright to black and bright yellow: the filling factor of the low-absorption layer is too low, the gradual change of the absorption layer is obvious, and there is no mutation process; The fill factor of the last absorber layer can be increased until the above evolution process occurs.

Uneven color: the distribution of pores and magnetic field distribution is not coordinated, can be used as purple or blue-violet tube, adjusted according to the color difference, the gas volume from large to small is: golden - red - purple - blue - blue - bright blue - bright black - bright yellow. And the leak detection confirms that there is no leakage.

More sympathetic to your experience, you can go to my space ** about the film log, are a lot of predecessors' efforts, the practical part is also my more than ten years of experience, a lot of beginners feel useful now excerpt a little emergency use, and the master is still very important.

The coating equipment structure configuration is different, and the coating parameters are also different. No one can provide the right process parameters for you. You can find some professional literature or books to study by yourself, and ask others for advice or send them to ** when you encounter specific problems that you don't understand. Little by little, progress is made.

First collect more information in the library or some vacuum coating**, it is very beneficial for those who have just learned.

Good luck!

You can ask the master in the factory.

Technical questions will definitely not be passed on easily, you can tactfully invite the masters, be sincere, if not, you are trying to find a way.

Depending on the process, it can be plated with metal, metal oxide, alloy material, etc.

No, it is a multi-layer synthesis of metals and polymer materials.

The heat collector tube coating is a compound film layer, ALN doped with Cu or stainless steel, TION, etc.

The heat collection effect of copper plating is better than that of aluminum nitride, because copper has a good thermal conductivity effect, second only to silver in metal.

The world's most advanced vacuum tube coating technology - interference film process is adopted, the traditional gradient film process is eliminated, and the three-target coating - aluminum, copper and stainless steel is adopted. Due to the fact that the reflection curve of the traditional gradient selective absorption coating is not steep, the emission ratio increases with the increase of temperature, resulting in a much increase in the emission ratio when the operation is 300-500.

It depends on how high the vacuum you want to achieve. The vacuum extraction equipment selected is different for different vacuum levels. A general small two-stage rotary vane pump is sufficient. Pumps are also commonly used. The vacuum level can reach a few tenths of a pascal.

There is a black circle on the film layer, if it is in the position of the round head of the inner tube, it proves that there is stress in the inner tube, if you don't believe it, you can destroy the tube, after the film is removed, the transparent glass tube is restored, and the stress instrument is observed, you can clearly find the blue-green deficit in the stress ring, if you are a manufacturer, in line with the attitude of being responsible for the customer, you should re-anneal the inner tube, remove the stress and then coat it, otherwise the stress of the tube is easy to blow up the tube and run the water. Another possibility is that the wear marks left by the inner tube when it rotates on the fryer, which are not cleaned before the pin is cleaned and shown after coating, so the tube is not a big problem in terms of service life and performance.

Answerer: Wang Junjiu.

Linuo's vacuum tubes have the largest market share and are the only vacuum tubes that have passed the authoritative CGC Golden Sun certification. The blank tube target, nozzle relay, vacuum degree, coating technology, etc. are different, and the vacuum tube produced is of excellent quality. The main indicators are the pipe, the nozzle relay, the coating level and the vacuum degree.

My Huangming solar energy uses Huangming's vacuum tube The nozzle has the word Huangming It can be used for 3 years The vacuum tube has not been broken I feel that solar energy and mobile phones are better with the original At least a manufacturer's quality and after-sales *** It's just a personal opinion.

The diameter of the 58 180 tube solar water tank is 470, and the capacity is generally calculated according to a tube of 9 liters of water, and some manufacturers also have 450 420, which is not easy to say, and the 420 thin tube is calculated according to 6 liters.

Now the standard pipe is 58 The inner pipe is about 48, so you can calculate it yourself about 3L and 6 catties of water.