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Bubbles are typically generated during the reflow and wave soldering processes in SMT chip manufacturing. These bubbles can not only detract from the visual appeal of the PCBA but also compromise the overall quality of the products. To prevent solder porosity during production, PCBA manufacturers implement several methods. Below is a brief introduction to these practices.
1. Baking
PCBA substrates and components that have been unused for a long time and are exposed to air may absorb moisture. To prevent this moisture from affecting the PCBA process, it is advisable to bake these materials after a period of storage or before usage.
2. Solder Paste
The quality of solder paste is crucial for PCBA manufacturing. If the solder paste contains moisture, it can lead to issues such as porosity or solder beads during welding. Therefore, it is essential to choose high-quality solder paste and adhere strictly to processing requirements, including gentle mixing. Additionally, it is best to minimize the exposure of solder paste to air before use. After applying solder paste in the SMT chip processing phase, it is important to proceed with reflow soldering promptly.
Methods of Preventing Welding Porosity in PCBA Factory
3. Workshop Humidity
The humidity level in the processing workshop is another critical environmental factor for PCBA manufacturing. It should typically be maintained between 40% and 60%.
4. Furnace Temperature Curve
Temperature detection in the furnace must be carried out in strict accordance with the standard requirements of the electronic processing factory. The furnace temperature curve should be optimized methodically, ensuring that the preheating zone meets the necessary criteria for complete volatilization of the flux. Additionally, the speed of the materials passing through the furnace should not be excessive.
5. Flux
During wave soldering in PCBA production, it is important not to overspray the flux.
By following these practices, PCBA manufacturers can effectively minimize the occurrence of solder porosity and enhance the overall quality of their products.
Why Choose China PCBA Supplier KSPCBA as Your Methods of Preventing Welding Porosity in PCBA Manufacturer?
– Experienced and skilled team
– State-of-the-art equipment
– Strict quality control
– Excellent customer service
– Competitive price
Please send Email to kspcba@c-alley.com or call us through +86 13828766801 Or submit your inquiry by online form. Please fill out below form and attach your manufacturing files( PCB Gerber files and BOM List) if need quotation. We will contact you shortly.
+86 13828766801
kspcba@c-alley.com
https://www.kingshengpcba.com/
2/F, Building 6, Tangtou 3rd Industrial Zone, Tangtou Community, Shiyan Town, Baoan District, Shenzhen, China, 518108
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