The Effect Of Temperature Control On The Stability Of Cold-pressed Pin Connections

The operating temperature of the crimp socket contact is one of the key factors affecting the continuity of the connection. Materials undergo thermal expansion and contraction with temperature changes, and the mechanical fit between the metal pin and the socket wall varies significantly under different thermal conditions. During long-term operation, ambient temperature and the temperature rise at the contact point induced by current will alter the geometry and microscopic contact pressure distribution of the interface between the female crimp contact and the mother body. Temperatures exceeding the design range may cause fluctuations in contact impedance, leading to degradation of the contact interface characteristics and affecting electrical continuity.

Under thermal cycling, the metal material may gradually transition from elastic deformation to plastic deformation. The weakened interface contact pressure will exacerbate resistance fluctuations; this process is closely related to the operating temperature. Taking into account the coefficient of thermal expansion, elastic modulus, and fatigue performance of materials during the design process is part of evaluating the long-term bonding performance of male crimp contact.