Electronic processing companies and semiconductor factories have done a lot of anti-static protection measures. Electrostatic accidents still exist. The wrong anti-static method is one of the causes of accidents. Based on years of understanding the problems found at the customer's production site, several errors have been summarized. Use method or static protection misunderstanding, write it out and share with you, I hope to help all users to make their product quality to a higher level.
First, the anti-static elimination equipment has not been tested according to requirements for a long time, and some of them have not been used to eliminate static electricity, but they are still in use. For example: ion fan, the surface of the ion needle is already full of dust, and it can not generate ion wind at all. The ion fan has lost its ability to eliminate static electricity.
Second, the wrong use of anti-static tools, such as: improper use of the wrist strap, anti-static wrist strap must be in close contact with the human body.
Because the wrist strap is relatively easy to damage, it needs to be tested every day. A good wrist strap will also be too loose and not conductive because the worker wears it. Therefore, the best method is to monitor the real-time monitor with the wrist strap online monitor. However, there are many companies that do not even have a wrist strap tester. An anti-static wrist strap has been used for many years (the national standard requires a half-year replacement), so that it does not have the effect of static electricity.
Third, anti-static shoes, clothes are not worn at the same time, in addition to wearing anti-static shoes, but also wear anti-static overalls to better control the body's static electricity. Because the clothing can also carry a high degree of static electricity during the exercise friction, especially most of the clothing is chemical fiber, which can generate thousands of volts of static electricity.
The production site inspection proves that people only wear anti-static overalls, such as not wearing anti-static shoes and not having good anti-static ground, anti-static effect can not meet the standard.
Eliminating static electricity is a long-term system engineering. Therefore, hardware decoration alone is not enough. Professional anti-static specifications are required to be observed. For example, anti-static wrist straps should be qualified. How often the static product is tested should be included.
