Hidden Dangers Caused By Internal Defects In Copper Terminal Blocks

copper terminal block The internal material condition of copper bars has a profound impact on the performance of the finished product. Even slight fluctuations in material mixing, rolling, and heat treatment during production can lead to invisible cracks or inclusions within the copper bar. These problems often go unnoticed during visual inspection but can affect current distribution and contact stability during later use.

Microcracks inside copper distribution block often originate from tiny stress concentration points within the material. These tiny cracks are difficult to detect using conventional testing methods in the early stages, but they may expand under long-term cyclic loading, thermal shock, or vibration, causing deformation of the contact surface or changes in the conductive path. This type of defect has also been confirmed in the analysis of other metallic conductor materials.

Slag inclusions refer to impurities that were not fully removed during the smelting and casting stages of copper terminal strip copper. They are commonly found in batches of copper materials where purity control is not strict in mass production. Inclusions not only alter local conductivity but can also induce crack network propagation under mechanical loads, thus affecting the overall structural uniformity.