How to choose reflow soldering?

I believe that many friends will be very entangled when choosing reflow soldering. They don’t know how to choose, especially friends who don’t know reflow soldering are even more confused. Don’t worry now. Let’s briefly introduce how to do it. Choose the method of reflow soldering:

1. Check the insulation performance of the reflow oven.

A high-quality reflow oven has good heat preservation effect and high thermal efficiency, but inferior reflow oven does not have such a function. Although the thermal efficiency of the reflow oven is difficult to measure, you can touch the reflow oven and the exhaust air by hand. When the pipeline is working, the shell is used to judge the temperature. If you feel hot when you touch it with your hands or you dare not touch it, it means that the insulation performance of the furnace is poor and the energy consumption is large. Normally, the human hand feels a little hot (about 50 degrees Celsius).

2. Type of heater: Heaters can be divided into infrared lamps and adaptive lamp heaters.

(1) Tubular heater: It has the advantages of high working temperature, short radiation wavelength and fast heat response. However, due to the generation of light during heating, it has different reflection effects on welding components of different colors. At the same time, it does not It is suitable for matching with forced hot air.

(2) Plate heater: The thermal response is slow and the efficiency is slightly low. However, due to the large thermal inertia, the perforation is conducive to the heating of hot air. It is less sensitive to the color of the welded components and has a smaller shadow effect. In addition, currently sold In reflow ovens, the heaters are almost all aluminum plate or stainless steel heaters.

3. The heat transfer system of reflow soldering must have 4 to 5 heating zones.

Good reflow soldering has at least a heater in the preheating zone, and can independently control the temperature to ensure that the temperature can be quickly transmitted to the soldering temperature in three ways: conduction, convection, and radiation.

The above points are about how to reflow soldering. When we choose reflow soldering, we can compare according to the above points. At the same time, we also need to choose what kind of reflow soldering according to our own needs. I hope it can help everyone.