What problems should be paid attention to in manual soldering of PCB aluminum substrate?

In the production process of PCB aluminum substrate, in order to ensure its better application effect, manual soldering of tin wire is usually used afterwards. So, what problems should be paid attention to in manual soldering of PCB aluminum substrate?

1. Pay attention to the welding temperature

Due to the particularity of the aluminum substrate material, in order to ensure the welding effect, it is necessary to ensure the operation at the temperature level during welding, the welding temperature should be kept as constant as possible, and the welding accuracy should be paid attention to. Only in this way can a very good application effect be guaranteed.

2. Select suitable raw materials

In the welding process, the selection of suitable raw materials is particularly important. Try to choose some ultra-low temperature electrodes and their relative flux, so that the welding effect will be better.

3. It is harmful to apply force to spot welding with a soldering iron tip

The tip of the soldering iron transmits the heat to the spot welding. The key is to increase the total contact area. Using an electric soldering iron to add force to the spot welding has no effect on heating, and in many cases, it can cause damage to the welded parts. Soldering points such as resistors, power switches, and connectors are generally fixed on plastic prefabricated components.

Summary: Although manual welding is rarely used in the production and manufacture of large-scale electronic equipment, manual welding is still inevitable for the maintenance and adjustment of electronic equipment. At the same time, manual welding is a theoretical professional skill, and the quality of welding will also damage the maintenance effect.

The above are some of the problems that should be paid attention to in manual soldering of PCB aluminum substrates.

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