Why does the phenomenon of false welding occur? How to deal with it? Lead-free and no-rinse solder paste

The phenomenon of false welding is relatively easy to occur during the production process, and many merchants are very distressed about it. Today, JJY Solder Paste Manufacturer will give you a detailed introductionLead-free and no-rinse solder pasteWhy does the phenomenon of false welding occur and what countermeasures should be taken to deal with it after it occurs

Cause: During the lead-free and no-rinse solder paste printing processPCBThe sheet was not cleaned thoroughly, resulting in the relevant tin powder remaining on it. Solution: This situation is relatively easy to handle. We will use professional brushes to deal with itPCBJust clean the board thoroughly.

Cause: The solder paste was opened before use, resulting in poor sealing and solvent evaporation. Handling method: Try to ensure the service life of the solder paste as much as possible. Do not open the package at will. Use it immediately after opening.

Cause: Power outage, resulting inPCBThe solder paste on the board has stayed in the boiler for too long. Solution: Regularly check the reflow solderingUPS.

Cause of occurrence: The parts involved in the production process are contaminated, with dust and other fine substances adhering to them. Handling method: Personnel shall followSOPHomework.

Cause of occurrence: Excessive synthetic solvent was added during production, and alcohol and solder paste were improperly mixed. Solution: Before production, the alcohol must be allowed to evaporate before printing, and the steel mesh should be cleaned properly.

Cause of occurrence: The solder paste used has expired, and the amount of flux in it has decreased, resulting in a decline in the quality of lead-free no-wash solder paste. Solution: Before adding solder paste, carefully check whether the lead-free and no-rinse solder paste has expired.

Cause of occurrence: The temperature was set improperly during the reflux setting, resulting in an error. Solution: Reset the reflow soldering temperature parameters.

Shenzhen JJY Industrial Technology Co., Ltd. mainly engages in the production and operation of:SMTSolder paste manufacturers of solder paste, syringe solder paste, lead-free solder wire, wave soldering bar, automatic soldering wire, etc.