What are the processes of SMT patch processing?
One -stop PCBA manufacturers today will tell you what processes are there in SMT patch processing? SMT patch processing process process. Many customers who need to do SMT patch processing, when they have signed the contract, they can get the goods immediately and start to urge the delivery period. This will only increase the pressure of the salesperson, and then roll out the line, resulting in an increase of errors. The following introduces the processing process of SMT patch. I believe that by understanding, everyone can understand the processing cycle of SMT patch processing.
SMT patch processing process1. Point tape
Plastic replenishment is to drop the red glue to the fixed position of PCB. The main function is to fix the component to the PCB board. The device used is the point -end or behind the detection device of the SMT production line. (This is a necessary process. It is mainly for the heavy device on the board. The use of red glue technology can increase adhesion.)2. Tibrium printing
Print the illegal paste on the PCB line board with an illegal paste to prepare the welding of electronic components. The equipment used is a tin paste printing.
The role of paste is to accurately install the surface assembly device to the fixed position of the PCB. The device used is the patch machine, which is behind the printing machine in the SMT production line.4. Cixedly
The role of solidification is to melt the patch glue, so that the surface assembly component is firmly adhered to the PCB board. The device used is a solid furnace, behind the patch machine in the SMT production line. (This process is used when using red glue technology, and it is also necessary.)5. Back welding
The role of reflow welding is to melt the tin paste so that the surface assembly component is firmly glued with the PCB board. The equipment used is a reflux furnace, which is behind the patch machine in the SMT production line.6. Clean
The role of cleaning is to remove the harmful welding residues on the human body on the assembled PCB board, such as welding agents. The equipment used is the cleaning machine, the position can be not fixed, it can be online, or it is not online.7. PCBA detection
The role of PCBA detection is to detect welding and assembly quality for the assembled PCBA board. The equipment used is magnifying glass, microscope, online tester (ICT), flying needle tester, automatic optical detection (AOI), X-Ray detection system, function tester, etc. According to the needs of the test, the location can be configured in a place where the production line is appropriate.8. Rebate
The role of repairs is to rework the PCB board that detects faults. The tools used are soldering iron, returning workstations, etc. Configure in any position in the production line.