The pvd coating machine has air leakage, and the staff engaged in the vacuum industry are all exposed. Air leakage of pvd coating machine will cause various problems to the coating later, such as high defective product rate, uneven film thickness and other problems. Therefore, when the equipment leaks, many coating manufacturers are very concerned. Pay attention and find the cause in time. The following Xiaobian will introduce to you how to solve the problem of air leakage in the equipment.

       1. First of all, it is necessary to test the gas tightness of the vacuum chamber to ensure that the gas tightness meets the requirements.
       2. Check the size, shape, location and air leakage speed of the leak hole, prepare a solution and implement it.
       3. It is necessary to confirm whether the air leak is a real leak or a false leak, because the workpiece material will generate gas to varying degrees after heating, which may be mistaken for the gas flowing in from the outside, which is a false leak, and this situation should be ruled out.
       4. Determine the minimum detectable leak rate and sensitivity of the detection instrument to detect air leaks in the largest range, avoid some leaks from being ignored, and improve the accuracy of leak detection.
       5. Grasp the response and elimination time of the leak detection instrument, grasp the time well, and ensure that the leak detection instrument works in place. If the time is short, the leak detection effect will definitely be poor. If the time is long, the leak detection gas and labor costs will be wasted.
       6. It is also necessary to avoid blockage of leak holes. Sometimes due to operational errors, some dust or liquids block the leak holes during the leak detection process of the pvd coating machine, thinking that there are no leak holes in this position, but when these blockages are due to If the difference in internal and external pressure increases or other reasons make the leak hole not blocked, the air leak still exists.
       If there is an air leakage problem in the pvd coating machine, each staff member may have their own methods and tips, but most of the treatment methods should be similar, but as long as the result is the same, it will not affect the coating process and quality in the end.