How to eliminate static electricity when grounding is impossible
Recently, I often receive inquiries from customers about how to eliminate static electricity in an environment that cannot meet the requirements of static grounding. Outdoor static grounding is a fast and cost-saving method for static discharge. It is also a must for all electronics manufacturers. The static electricity on the insulator, because the electric charge cannot flow on the insulator, so the method of grounding cannot be used to eliminate the static electricity. The following measures can be adopted:
(a) Use ion blower-ion blower generates positive and negative ions, which can neutralize the static electricity of static electricity. It can be installed in the space and near the placement head of the placement machine.
(b) Use static eliminators-static eliminators are surfactants. Use static eliminator to scrub the surface of the instrument and the object, which can quickly eliminate static electricity on the surface of the object.
(c) Control the humidity of the environment-increasing the humidity can increase the surface conductivity of non-conducting materials and make the surface of the object difficult to accumulate static electricity. For example, humidification and ventilation measures can be adopted in the dry environment in the north.
(d) Use electrostatic shielding—shielding cover (cage) can be used for equipment prone to static electricity, and the shielding cover (cage) can be effectively grounded.
(e) Process control method-in order to produce as little static electricity as possible in the manufacture of electronic products, control the accumulation of static charge, quickly eliminate the existing static accumulation, and release it immediately. The design of the plant, equipment installation, operation, management system, etc. Take effective measures.