The solder paste sample is fine, but it can't be mass-produced?

As a familySMT(PCB)In the process of manufacturing electronic circuit boards, electronic factories may encounter such problems:The same solder paste sample is fine, but it can't be mass-produced? What's going on here? Today, the solder paste manufacturer will talk about the issues related to solder paste:

1When achieving mass production, a new product was adopted

Products that were normally tested with solder paste but were replaced with new ones when they were officially put into mass production will result in some problems such as false solder paste soldering and missed soldering in the produced products.

2Improper control and handling of the solder paste printing process

During the solder paste printing process, the main reasons for the defective products are improper operation by the operators or failure to clean the solder paste printing machine thoroughly.

3Electronic and digital products are inherently oxidized

When electronic and digital products already have oxidation issues, even reliable solder paste samples may encounter various problems such as false soldering and failure to solder in mass production.

4Solder paste quality issues

When there are no problems in the inspection of the production process, it is necessary to consider whether it isSolder pasteInherent quality issues. It might be due to insufficient activity of the solder paste or its dryness, which could lead to substandard product quality after mass production.