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SMT is a surface assembly technology, which is a new generation of electronic assembly technology developed on the basis of hybrid integrated circuit technology. Today we will introduce the total number of steps of SMT production line process.
The process flow of SMT production line can be summarized as:
Printing (red glue / solder paste) --▷ "inspection (optional SPI automatic or visual inspection) --▷"placement (first paste small devices and then paste large devices: high-speed Chip placement machine + multi-function IC placement machine) --▷"inspection (optional AOI automatic optical or visual inspection) --▷ " (red glue curing) --▷ "reflow soldering (using hot air reflow soldering for surface mount components welding) --▷ "inspection ( (can be divided into AOI optical inspection appearance and functional test inspection)--▷ "repair (using tools: soldering table and hot air desoldering table, etc.) --▷ "plug-in (through-hole components automatic plug-in or manual plug-in)--▷ "wave soldering (using wave soldering for through-hole plug-in welding) --▷ "cleaning --▷ "inspection (optional AOI automatic optical or visual inspection) --▷ "repair (using tools: soldering table and hot air Desoldering table, etc.)--▷ "Separation of boards (manual or separating board machine for separation of boards) --▷" Testing (can be divided into ICT in-line testing and FCT functional test testing)--▷" Maintenance (using tools: soldering table and hot air desoldering table, etc.)
The above is the SMT placement process steps, as a new generation of assembly technology in the manufacture of electronic products, each step of it is the same as PCB production, with strict and fine features, I hope this article can provide you with some reference.
Post time: Oct-22-2022