What is friction welding in bi-metallic lugs and how does it improve performance?

BI METALLIC LUGS are vital components used to connect dissimilar metals: aluminum conductors to copper busbars, for example, in electrical systems. Friction welding happens to be one of the key processes that enhance the performance of these lugs. But what does it mean? And why is it so important?


A friction welding process is a solid-state joining process whereby the rotational force and pressure are applied to solder together two metals without melting them. In the case of bi-metallic lugs, it is the bonding of an aluminum barrel to a copper palm. The result is a strong, corrosion-resistant, and highly conductive joint between the two metals. Since there is no melting, the metals do retain their structural integrity without the possibility of creating weak points due to thermal damage.


This method also prevents galvanic corrosion, which arises when dissimilar metals are improperly joined. There is a result of durable, maintenance-free connections that guarantee long-term reliability even those in high electrical load applications or adverse environmental conditions.


Thanks to the friction welding process,BI METALLIC LUGS are characterized by superior conductivity, mechanical strength, and long service life; hence, they remain the preferred solution for electrical distribution, solar, and industrial applications.

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