Feasible anti-static measures
1. Grounding
Grounding is the direct discharge of static electricity through a wire connection to the ground. This is *direct* effective in anti-static measures. Grounding methods are usually used for conductors, such as artificial anti-static wrist straps and grounding of work surfaces.
The grounding is implemented by the following methods:
① The human body is grounded through the wrist strap.
② The human body is grounded through anti-static shoes (or shoe laces) and anti-static floor.
③ The work surface is grounded.
④ The test instrument, tool holder, and soldering iron are grounded.
⑤ Anti-static floor, grounding mat.
⑥ Anti-static transfer vehicles, boxes and racks should be grounded as much as possible.
⑦ The anti-static chair is grounded.
2. Electrostatic shielding
Electrostatic sensitive components will be exposed to static electricity during storage or transportation. The method of electrostatic shielding can weaken the external static
Electricity’s influence on electronic components, *the usual method is to use static shielding bags and anti-static turnover boxes as protection. In addition, anti-static clothing is for people
Body clothes have a certain shielding effect.
3. Ion neutralization
A. Anti-static instrument
① Wrist strap/foot strap/anti-static shoe comprehensive detector-purpose: used to detect whether the wrist strap, foot strap, and anti-static shoes meet the requirements.
② When testing foot straps and anti-static shoes, a metal plate and a wire connected to the meter should be added.
③ In addition to static ion fan detector-purpose: regularly check and verify the balance and decay time of ion fan to ensure ion
The fan is working in a safe range of indicators.
④ Electrostatic field detector-purpose: measure the electrostatic field to reflect the existence of static electricity, and read in the form of voltage to test the static electricity of the environment
Strength. Generally affected by the environment and the transient characteristics of static electricity, it is difficult to truly reflect the actual situation.
⑤ Electrostatic shielding bag tester-purpose: used to test the shielding effect of electrostatic shielding bag.
⑥ Surface resistance measuring instrument-purpose: used to measure the surface resistance and volume resistance of materials.
B. Grounding anti-static products
① Anti-static wrist strap: It is widely used in various operating positions. There are many types of wrist straps. It is recommended to generally use a hand equipped with a 1 megaohm resistor.
There should be a certain margin for the length of the wrist strap.
② Anti-static watch: it needs other anti-static measures (such as adding ion fan, wearing anti-static heel strap, etc.) to obtain
Good anti-static effect. It is recommended not to use anti-static watches in large numbers.
③ Anti-static foot strap/anti-static shoes: After using the anti-static floor in the workshop, you should wear anti-static shoe laces or anti-static shoes.
Wear anti-static shoes mainly to reduce the introduction of dust. Operators and employees will be better equipped with anti-static wrist straps.
④ Anti-static table mat: It is used for laying on the surface of each workbench, and each table is connected with an anti-static ground after stringing 1 megohm resistance.
⑤ Anti-static floor:
Anti-static floor is divided into: PVC floor, polyurethane floor, raised floor.
Anti-static wax and anti-static paint: Anti-static wax can be used on various floor surfaces to increase anti-static function and make the floor brighter and cleaner
Anti-static paint can be used on various floor surfaces, and can also be applied to various shelves, turnover boxes and other containers.