Solvent cleaning is a commonly used method to remove excess tin residue. It is mainly through chemical reaction, the use of solvents to dissolve or separate the excess tin residue. In general, commonly used solvents include acids, bases, organic solvents
Improper temperature control: If the temperature is insufficient, the solder will not be completely melted, and the solder joint may not be rounded. On the other hand, if the temperature is too high, the solder joint may be deformed.
Improve production efficiency: Traditional THD technology requires electronic components to be inserted into PCB holes one by one, and connected by manual or automated means, which is time-consuming and laborious. The SMT technology can achieve efficient
Welding process parameters: The selection and adjustment of welding process parameters will also affect the quality of welded joints. For example, the adjustment of parameters such as welding temperature, welding speed, crest height and period can achieve
2, the spring tension is insufficient, the suction nozzle and HOLD are not coordinated, resulting in poor feeding;Solution: Maintain the equipment regularly according to plan, check and replace the wearing parts. 3. Deformation of HOLD/SHAFT or PISTON, be
Secondly, excellent PCBA manufacturers need to have a complete quality management system to ensure product reliability and consistency. The best way to do this is to ask the PCBA manufacturer if they have ISO 9001 quality management system certification o
In the whole PCBA proofing process, the whole process management is very important, and it is usually responsible for the engineer in charge of management. In the process of implementation, managers should develop and implement the whole process managemen
patch inspection: when or after the patch is completed, the quality inspection is carried out for whether there is any missing paste, dislocation, mispaste, component damage, etc.
The operating steps of PCBA and components are reduced to a minimum to prevent dangers. In assembly areas where gloves must be used, soiled gloves can cause contamination, so replace them frequently if necessary
In THT wave soldering, the preheating temperature should not only consider the activation temperature required by the flux, but also consider the preheating temperature required by SMC/SMD itself. Generally, the selection principle of preheating temperatu
Solder paste net and red glue net in the material is also very different. Solder paste mesh is usually made of stainless steel. This is because stainless steel has very good strength and corrosion resistance. In addition, the surface of stainless steel is
In addition to the above advantages and disadvantages, solder paste and red glue are also different in terms of use and process flow. When using solder paste for SMT processing, it is usually necessary to use a printing press to evenly print the solder pa
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