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Injection molding department and machining department
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SES line contains three parts: film removal, etching, and tin removal, which are very critical steps in the printed circuit board (PCB) production process, and each step involves different equipment and processes.
Stripping
In PCB production, film removal usually refers to the removal of the protective film or photoresist covered by the surface of the circuit board. This process is part of the post-lithography process to remove the lithographic film from the unexposed area, exposing the metal layer or copper foil for subsequent etching or other processing. The film removal equipment usually uses chemical solution or hot air to peel the lithographic film.
Etching
Etching is the process of removing excess copper layers, leaving only the required wiring and connecting parts. Etching usually uses acidic or alkaline chemical solutions (such as ferric chloride solutions) to corrode copper. Etching equipment generally has different types such as dip, spray and drum, which can accurately handle the circuit board according to different production needs.
Stripping solder
The destinning wire is mainly used to remove excess tin layer from the surface of the circuit board, especially after welding or tinning. The destinning process is generally carried out by chemical solution, heating or mechanical scraping, and the purpose is to clean up unwanted tin to ensure welding quality or electrical properties. Destinning wire is usually used to clean up excess tin at the welding site after wave soldering, reflow soldering and other processes.
Loader → Peng song → film removal (1) → film removal (2) → sewage flushing → water
washing (1) → sewage flushing → HF water washing (1) → ultrasonic water washing HF water washing (2) (3) water washing and drying inspection Compensation etching etching (1) etching (2) sub solution washing overflow washing (1) (2) (3) clean water washing and drying inspection tin removal (1) tin removal (2) overflow washing (4) (5) (6) Wash with clean water, suck dry, scrub, overflow water, wash (7) (8) (9) (10) wash with clean water, suck dry, and unloader.
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