As is known to all,SMTThe defects in processing include85％Appear inSolder pasteIn the printing process, if a good solder paste printing effect can be guaranteed during the surface mount technology (SMT) processing, the straight-through rate and the yield rate will be maximally enhanced. At presentsmtIn the surface mount technology (SMT) processing plants, the coating function of automatic printing machines has basically been fully realized. This entire function helps maintain the consistency of product standards, thereby reducing the fluctuations in product quality caused by human errors. So, what is the entire process of such an important procedure like? Today, Shenzhen JJY Solder Paste Manufacturer would like to share with you all:

1Preparations before printing;

2Startup initialization

3Install the template

4Install the scraper (here, it is necessary to follow two systems for the new product and the old product: for the production of the old product, the graphics need to be calibrated and then the program of the old product needs to be adjusted);

5,PCBPositioning

6Graphic alignment

7Programming (setting printing parameters);

8Produce visual images;

9Add solder paste;

10First piece trial printing and inspection (adjusting parameters or aligning graphics);

11Continuous printing with a visual system (continuous printing without a visual system is also acceptable).

And after the solder paste printing is completed, throughSPISolder paste detector and3DAOIFor the inspection, if there are individual missed solder pads, a manual dispensing machine or a dispensing needle can be used for filling. IfBGAMany times, it is necessary to targetBGASpecial solder paste printing inspection is carried out during soldering. The above content is explained by Shenzhen JJY Solder Paste Manufacturer. Welcome to leave a message online and interact with us!