Operation method of vacuum coating machine and development of optical processing technology
Vacuum coating machine mainly refers to a kind of coating which needs to be carried out under a higher degree of vacuum, including many types, including vacuum ion evaporation, magnetron sputtering, MBE molecular beam epitaxy. Do users understand the operation method of the vacuum coating machine? The following is a small series to introduce the operation method of the vacuum coating machine, I hope to help everyone.
Vacuum coating electrical control cabinet operation
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1. Open the pump and air supply.
2. Turn on the main power.
3. Open the pump, vacuum gauge power supply, vacuum gauge position V1 position, wait for the value is less than 10, then proceed to the next step. It takes about 5 minutes.
4. Open the mechanical pump, pre-pump, open the turbomolecular pump power supply, start, vacuum gauge switch to V2 position, draw less than 2, about 20 minutes.
5. Observe that the turbomolecular pump reading reaches 250, turn off the pump, open the front and
The high valve continues to be evacuated, and after the vacuum is reached to a certain extent, the high vacuum head on the right side can be opened to observe the degree of vacuum. The vacuum reaches 2× after 10-3, the gun power can be turned on.
DEF-6B operation
1. Total power supply.
2. Simultaneously open the electron gun control I and the electron gun control II power supply: press the electron gun to control the I power supply, the delay switch, the delay, the power supply and the protection light are on, and the delay and protection light are off after three minutes. If the back door is not closed or the water flow relay has Fault, the protection light will be on constantly.
3. Open high voltage, the high voltage will reach 10KV or more, the beam current can be adjusted to about 200mA, the curtain grid is 20V/100mA, the filament current is 1.2A, and the deflection current swings between 1 and 1.7.
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Shutdown sequence
1. Turn off the vacuum head and shut off the molecular pump.
2. When the molecular pump is displayed to 50, turn off the high valve, the front stage, and the mechanical pump in turn, which takes about 40 minutes.
3. When it is less than 50, turn off the pump again.
Development of optical processing technology for vacuum coating machine
The development of optical processing technology and future trends of vacuum coating machines, the cold processing of optical coating parts in China was very rare during the Republic of China, and the introduction of optical processing technology from the Soviet Union and East German socialist countries in the 1950s was almost duplicated. Come over. Optical cold working uses coarse grinding, fine grinding, and classical polishing. The processing efficiency is low, and the technical requirements of the operator are high. Each operator has to undergo technical training for many years before he can formally work. Workers with better skills can work from blanks to polishing and work on their own. At this time, optical cold processing relies mainly on the skills and experience of skilled workers to process parts, and the role of process design is not very important during this period. At that time, there was no strict technical standard. Usually, only the requirements of process size, surface precision and appearance were given in the processing requirements, and the processing adjustment parameters could not be clearly defined. The operator adjusted the processing according to each individual's personal experience, as long as It is possible to produce parts that meet the requirements of the drawings. Usually, the labor force of each enterprise is surplus, and the attention to production efficiency is far less than the requirement of political thought.
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With the introduction of the spherical milling machine and the plane roughing machine, the labor intensity of the rough grinding operator is alleviated, and the processing efficiency of the rough grinding is greatly improved. The process requirements have also been improved, but due to the low precision of the equipment, the requirements of the subsequent processes have not changed, and the role of the process standards has not changed significantly. After that, the high-speed polishing of the quasi-spherical heart appeared, the production efficiency of optical cold processing increased rapidly, the division of labor of workers was more clear, and the role of the process standard was significantly improved. The role of the craftsman plays a decisive role in the production process. The standardization of work has become the main content of the daily work of the enterprise. The "craftsmanship" of the old workers has changed from the dominance of the past to the auxiliary role. The slogan "operating according to standards", "operating according to standards" and "production according to standards" has become the basis of production in every modern enterprise. The process methods, process routes and process standards formulated by the craftsman play an important role in the production of the enterprise.