3 effective methods to control static electricity
(1) Control the static electricity generation environment:
A. Humidity control. Increase the humidity as much as possible without causing corrosion, rust, or other hazards to equipment or products;
B. Temperature control. Try to reduce the temperature when possible, including ambient temperature and object contact temperature;
C. Dust control. This is an important measure to prevent adhesion (adsorption) charging;
D. Floors, table and chair fabrics and workbench pads should be made of anti-static materials and properly grounded;
E. Electrostatic protection measures should be taken for the transportation, storage, packaging and unpacking of electrostatic sensitive products;
F. The speed of spraying, flow, conveying, winding and separation should be controlled, and a moderator should be used in the conveying pipeline of liquid, powder and other materials.
(2) Prevent the human body from being charged:
A. Wear an anti-static wrist strap;
B. Wear anti-static clothing, clothes and hats;
C. Wear anti-static footwear and anklet;
D. Wear anti-static gloves and finger cots;
E. Human activities not related to work are strictly prohibited (such as doing exercises, playing around, combing hair, eating, etc.);
F. Perform ion wind bath.
(3) Process control measures:
A. Develop and implement anti-static operating procedures;
B. Use anti-static turnover, transport trays, boxes, boxes and other containers, trolleys;
C. Use anti-static tools (soldering iron, solder suction device, etc.);
D. Use anti-static packaging;
E. Set the necessary standing time for liquid materials that have the possibility of electrostatic combustion and explosion;
F. Minimize the contact pressure, time and area between objects (such as the transportation of cloth, paper, wire, film material, tape, etc., transfer rollers, reels, spools and products) and limit the running speed not to be too fast.
Anti-static operation specification at production site
1. The operation of all components must be carried out on an electrostatic safety workbench. All components that enter the anti-static work area must be treated in accordance with anti-static requirements.
2. SMD devices without anti-static packaging shall not enter the production site.
3. When taking out the parts from the static protection container, it should be carried out on the static safety workbench. As a worker, the following three points must be observed:
(1), you must wear anti-static overalls.
(2) Put on an anti-static wrist strap, which has good contact with the skin and is reliably grounded.
(3) When touching precious SMD components, it is best to wear an anti-static ring or finger cot.
4. For components without anti-static packaging, they should be eliminated before entering the static work site.
5. A monitor should be equipped on important operating stations to check whether the wristband is in a normal state at any time.
6. Ordinary clothing, drawings, documents, etc. must not touch the components.
7. When holding sensitive devices, avoid touching their leads and lugs.
8. When cleaning some components, plastic brushes cannot be used, and anti-static brushes must be used for cleaning.
9. All tools, fixtures, equipment and instruments without anti-static function that must be used at the operation site should be placed on the anti-static table (table) pad.
10. It is forbidden to reuse device packaging tubes to package components.
11. When welding manually, use an anti-static low-voltage soldering iron.
12. A low-voltage DC electric screwdriver with a grounding wire should be used.
13. Outsiders who enter the site without anti-static measures are not allowed to touch the components.
14. Various equipment at the production site must take anti-static measures