Wave Soldering Precautions for setting

2023-02-25

Wave soldering Precautions for setting
1.Increase the preheat temperature

Wave Soldering connection, reflow oven preheat zone temperature should be higher than the preheat temperature of tin / lead alloy reflow. Usually about 30 ℃ higher, at 170 ℃ -190 ℃ (the traditional preheat temperature is generally 140 ℃ -160 ℃) to improve the preheat zone temperature is to reduce the peak temperature to reduce the temperature difference between components.

Wave Soldering

2.Extend the preheating time
Appropriately extend the preheat preheat time, preheat too fast on the one hand will cause thermal shock, is not conducive to reducing the formation of peak reflow temperature of the shirt, the temperature difference between components. Therefore, the appropriate extension of the preheat preheat time, so that the temperature of the soldered components smoothly rise to the intended preheat temperature.
3, extend the reflow area trapezoidal temperature curve
Extend the reflow area trapezoidal temperature curve. While controlling the highest reflow temperature, increase the width of the reflow zone temperature curve, extend the peak time of small heat capacity components, so that the size of the heat capacity of the components to achieve the required reflow temperature, and to avoid overheating of small components.
4.Adjust the consistency of the temperature curve
Test to adjust the temperature curve, although the temperature curve of each test point has a certain degree of dispersion, it is impossible to be completely consistent, but to carefully adjust, so that the temperature curve of each test point as far as possible to converge.

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