The cleanliness of the vacuum chamber wall of the vacuum coating machine must be very high
The cleanliness of the inner wall of the vacuum chamber must be high; the surface of the parts must be smooth; the amount of material outgassed must be small; the parts of the vacuum chamber must be strictly cleaned; the surface of the parts must not be directly touched by hands; strictly control the vacuum chamber Leak rate. In addition, it is necessary to bake a vacuum chamber, the baking temperature range is 200°C~250°C, and the continuous baking time is 10h~12h (or 350°C~400°C baking temperature, continuous baking 4h) .
The development and future trend of optical processing technology of vacuum coating machines. Cold processing of optical coating parts in China was very rare during the Republic of China. By the 1950s, optical processing technology was introduced from the Soviet Union and East German socialist countries, which was almost a copy Here.
The optical cold processing adopts loose abrasive rough grinding, fine grinding and classical polishing. The processing efficiency is low, and the technical requirements for the operators are high. Each operator has to go through many years of technical job training before he can officially start working. Workers with better skills can complete the whole line of work alone, from processing rough to polishing. At this time, optical cold processing mainly relies on the skills and experience of skilled workers to process parts, and the role of process design is not very important in this period.
At that time, there was no strict process standard. Usually, only the process size, surface accuracy and appearance requirements are given in the processing requirements, and the processing adjustment parameters may not be clearly specified. The operator can adjust the processing according to each person's personal experience. Just produce parts that meet the requirements of the drawings. Usually every enterprise has a surplus of labor, and the focus on production efficiency is far less than the requirements for political ideas.
With the introduction of spherical milling machines and surface roughing machines, the labor intensity of roughing operators has been eased and the processing efficiency of roughing has been greatly improved. Process requirements have also been improved, but due to the lower accuracy of the equipment, there is no change in the requirements of the subsequent process, and the role of process standards has not changed significantly. After that, high-speed polishing of the quasi-sphere center appeared, the production efficiency of optical cold processing was rapidly improved, the division of labor was clearer, and the role of process standards was significantly improved. The role of the craftsman is a decisive role in the production process. Standardization of operations has become the main content of the daily work of the enterprise. The "craftsmanship" of the old workers has changed from a dominant role in the past to an auxiliary role. Slogans such as "operating according to standard", "operating according to standard" and "production according to standard" have become the foundation of every modern enterprise's production. The process method, process route and process standard formulated by the technologist play a decisive role in the production of the enterprise.
Hello, please leave your name and email here before chat online so that we won't miss your message and contact you smoothly.