Технологичен процес на повърхностно монтиране

Основните елементи на процеса на SMT включват: Печат на екрана (или разпределяне), монтаж (втвърдяване), презареждане на запояване, почистване, тестване и преработка .
1. Screen printing: Its function is to print solder paste or patch glue onto the pads of the PCB to prepare for the soldering of components. The equipment used is a screen printer (screen printer), which is located at the forefront of the SMT production line.
2. Dispensing: It is to drip glue onto a fixed position on the PCB board, and its main function is to fix the components to the PCB board. The equipment used is a dispensing machine, which is located at the forefront of the SMT production line or behind the testing equipment.
3. Монтаж: Нейната функция е да инсталира точно монтирани повърхностни компоненти на фиксираното положение на PCB . Използваното оборудване е пластир, която се намира зад екрана в производствения ред SMT .}}}}}}}}}}}}}}}}}}
4. Curing: Its function is to melt the patch glue, so that the surface mounted components and the PCB board are firmly bonded together. The equipment used is a curing furnace, which is located behind the patch machine in the SMT production line.
5. Reflow soldering: Its function is to melt the solder paste so that the surface mounted components and the PCB board are firmly bonded together. The equipment used is a reflow soldering furnace, which is located behind the placement machine in the SMT production line.
6. Cleaning: Its function is to remove the soldering residues such as flux that are harmful to the human body on the assembled PCB board. The equipment used is a cleaning machine, which can be in an unfixed position and can be online or offline.
7. Инспекция: Нейната функция е да проверява качеството на заваряване и качеството на сглобяване на сглобената платка за PCB . Използваното оборудване включва лути, микроскопи, тестери в кръг (ИКТ), Тестери за летящи сонди, автоматична оптична проверка (AOI), рентгенови инспекционни системи могат да бъдат функционални тестове и т.н. Поставете на производствената линия според нуждите на проверката .
8. Rework: Its function is to rework the PCB board that has failed in the inspection. The tools used are soldering irons, rework workstations, etc., which can be configured at any position in the production line.