Reliability Risks Associated With Repeated Processing Of Cold-pressed Needles

crimp contact male During repeated pressing, micro-cracks form on the surface. These cracks continue to propagate under pressure, increasing contact resistance. Temperature fluctuations exacerbate internal stress imbalances, accelerating fatigue failure. Each cold pressing operation alters the contact surface geometry, gradually deviating the fit accuracy from the standard range.

Copper undergoes work hardening after repeated stress, reducing ductility and increasing the probability of brittle fracture. From a quality control perspective, crimp socket contact requires comprehensive testing after a second rework. Contact resistance testing, surface morphology observation, and pull-out strength verification are all indispensable steps.

female crimp contact After one rework, the material is nearing its performance limit. Multiple processing depletes the material's plasticity reserves, making long-term use prone to failure. It is recommended to prioritize replacing critical components with new ones rather than repeatedly repairing the same terminal.