Many coating manufacturers spend a lot of money to buy pvd coating machines back, but they don't know how to maintain and maintain them. When the machines need maintenance, they don't know how to start, which is also a very headache. Therefore, in order to provide the satisfaction of the old customers, our company has set up a special after-sales department to answer all kinds of difficult problems encountered by the old customers during the use of the equipment. Although we have a professional after-sales department to serve you at any time, it is also very important to know some knowledge about equipment maintenance. Now the editor of Huicheng Vacuum will popularize the knowledge of equipment repair and maintenance for everyone, hoping to help everyone.

First of all, when using pvd coating equipment, every time more than 200 coating procedures are completed, the equipment should be cleaned with caustic soda (NaOH) saturated solution. Contact with caustic soda solution to avoid burns) The purpose is to make the plated film material aluminum (AL) react with NaOH. After the reaction, the film layer falls off and hydrogen is released. Then clean the vacuum chamber with clean water and clean the dirt inside the fine extraction valve with a cloth dipped in gasoline. The studio should be cleaned every 200 coating procedures completed. When the rough pump (slide valve pump, rotary vane pump) works continuously for one month (half of the rainy season), it is also necessary to replace the new oil. Unscrew the oil release bolt, drain the old oil, and start the pump for a few seconds, so that the old oil in the pump is completely discharged. Unscrew the oil-returning bolt and add new oil to the rated amount (observed by the oil sight glass). For more than half a year of continuous use, the oil cover should be opened when changing the oil, and the dirt in the box should be wiped off with a cloth. When the diffusion pump is used continuously for more than 6 months, the pumping speed becomes significantly slower. If the diffusion pump has been used continuously for more than 6 months, the pumping speed is obviously slowed down, or the operation is improper. Fill the air into the atmosphere, remove the connecting water pipe, remove the electric stove, unscrew the first-level nozzle, and clean the pump cavity and pump bladder with gasoline first. Once again, wash it with washing powder mixed with water, and then wash it thoroughly with clean water. After the water evaporates, install the pump bladder, add new diffusion pump oil, and put it back into the body, connect the water pipe, and install the electric hob. to restart. Before restarting, pay attention to leak detection. Then, start the maintenance pump, close the door, and after a few minutes, observe whether the partial vacuum of the diffusion pump reaches 6X10 Pa, otherwise it is necessary to check for leaks. Check whether the sealing ring is installed at the joint, or the sealing ring is crushed. Heating can only be done after eliminating the hidden danger of air leakage, otherwise the diffusion pump oil will burn the ring and cannot enter the working state.
     The above are some of the more common maintenance problems during the use of the pvd coating machine. Everyone has learned that similar problems occurred in the machine in the later period. You can know the specific cause and find the correct method to deal with and solve it in time.