How to choose the right type of aluminum welding wire alloy to ensure improved heat dissipation performance after welding?

In the electronics manufacturing industry, aluminum welding wire is often used for welding aluminum heat sinks and circuit boards. Considering the importance of heat dissipation performance, how to choose the right type of aluminum welding wire alloy to ensure improved heat dissipation performance after welding?

In the electronics manufacturing industry, choosing the right type of aluminum welding wire alloy is crucial to improving the heat dissipation performance of aluminum heat sinks and circuit boards after welding. The following is a suggestion on how to choose the right type of aluminum welding wire alloy based on the information provided in the reference article:

Consider the heat dissipation performance requirements:
Aluminum alloy welding wire has thermal conductivity, so make sure that the selected welding wire can meet the basic requirements of heat sink thermal conductivity.

Select according to alloy composition:
Pure aluminum welding wire: The aluminum content is greater than 99.5%, with extremely high thermal and electrical conductivity, suitable for occasions with extremely high thermal conductivity requirements.
Silicon aluminum welding wire: Silicon aluminum welding wire adds silicon element, which has higher welding strength and corrosion resistance. If the heat sink requires additional strength or corrosion resistance, silicon aluminum welding wire is a good choice. But it should be noted that the addition of silicon may have a certain effect on thermal conductivity.

Magnesium-aluminum welding wire: Magnesium-aluminum welding wire has added magnesium and has good plasticity and welding performance. This welding wire is suitable for occasions that require high plasticity and welding performance, but its impact on thermal conductivity needs to be weighed when choosing.

Copper-aluminum welding wire: Copper-aluminum welding wire has added copper and has good electrical conductivity and thermal conductivity. If the heat sink also requires high electrical conductivity, copper-aluminum welding wire is a good choice.

Choose according to welding conditions:
Consider the environmental conditions of welding, such as temperature, humidity, etc. In a windy or humid environment, you can choose a low-temperature aluminum welding wire to ensure the welding quality.

Consider the welding process:
Choose a suitable welding wire diameter according to the requirements of the welding process. When welding thin plates, you can choose a welding wire with a thinner diameter; when welding thick plates, you need to choose a welding wire with a thicker diameter.

When choosing the appropriate aluminum welding wire alloy type in the electronics manufacturing industry, you should consider the heat dissipation performance requirements, alloy composition, welding conditions, welding process, and actual application cases. By weighing these factors, you can choose the suitable aluminum welding wire alloy type to ensure the improvement of heat dissipation performance after welding.

ER5087 Magnesium Aluminum Welding Wire