The influence of reflow soldering time on welding quality

Reflow soldering is an electronic assembly technique used to reheat solder and fuse it together. Welding time is one of the most important control parameters in the reflow soldering process, which has a significant impact on the welding quality. The following is the impact of reflow soldering time on welding quality:

1. Welding strength: Short welding time may cause incomplete melting of the solder, resulting in insufficient welding strength. If the welding time is too long, it may cause the solder to produce oxides and other harmful substances, affecting the welding quality.

2. Welding reliability: Insufficient welding time may lead to incomplete fitting of the welded components, resulting in insufficient welding reliability. Excessive welding time may cause deformation or damage to the welded components, affecting welding reliability.

3. Welding quality: Insufficient welding time may lead to poor welding quality, such as virtual welding, detachment, and other problems. If the welding time is too long, it may lead to a decrease in welding quality, such as oxidation, deformation, and other problems.

Therefore, when performing reflow soldering operations, it is necessary to adjust the time based on factors such as the material, size, and soldering method of the soldering components to ensure welding quality and reliability. Generally speaking, welding time between 2-5 seconds is more appropriate.