SMT factory control SMT factory control can be divided into warehouse-IQC-production process-OQC-packaging, warehousing and shipping★Warehouse control: 5S; ESD; storage conditions; ledger; safety; incoming materials; picking materials; returning materials. 1. 5S: 1. Material division (can be divided according to customer, machine model, and whether it is a good product) 2. Marking (whether each material has a corresponding material number) 3. Neatness (check whether the materials and shelves are neat and planned are placed in the corresponding position; whether the shelves are kept clean) 4. Personnel’s employment certificate. 2. ESD: 1. Whether all shelves are grounded. 2. Whether the floor is sprayed with anti-static paint or laid with anti-static leather. 3. Whether all trailers and pallets used to transport materials are anti-static. Three storage conditions: 1. Environmental requirements in the warehouse (temperature, humidity,) whether there is a temperature and hygrometer. 2. Refrigerator (for special materials such as solder paste that need to be stored at low temperature) 3. Nitrogen cabinet (for storing some unsealed materials) 4. Oven (for processing some moisture-sensitive components before they are put online) 5. First in, first out (check whether the materials in stock follow the first in, first out principle by checking the date when the materials are put into storage) Four ledgers: 1. Check the BIN card with the physical object. 2. Check BIN card and account. 3. Receipt of materials list. 4. Material delivery list. 5. Return material list. Five safety: 1. Fire protection (whether there is a fire hydrant or not, a fire extinguisher is necessary because some valuables cannot be extinguished with fire water. What I have to mention here is the 5S mentioned above. Fire hydrants and fire extinguishers cannot be used around them. Stacking materials.) 2. Rainproof (the warehouse must not leak, and the windows must be closed and protected from light, because some materials cannot be exposed to direct sunlight)…
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