Reasons for abnormal pogo pin connectors
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The stresses received by the spring thimble mainly include bending stress, changing stress, tension and compression stress, and compound stress.
The main faults of the spring pogo pin are cracking, deformation, slack, and abrasion. The most important ones are cracking and deformation (relaxation).
1. Brittle cracking: Most of the spring cracks are brittle cracking. Only when the working temperature is relatively high, will plastic cracking appear. In engineering, fatigue cracking, stress corrosion cracking, and hydrogen embrittlement cracking are called brittle cracking.
2. Fatigue cracking: cracking of the spring under the effect of cyclic loading.
3. Stress corrosion cracking: Tension spring cracking is caused by the action of tensile stress and corrosive media.
4. Corrosion fatigue cracking: the spring cracking under the action of cyclic load and corrosive medium.
5. Hydrogen brittleness, cadmium brittleness, black brittleness: brittle fracture caused by high impurity content in the spring material.
6. Wear: Wear is divided into abrasive, fatigue, and corrosion wear, and cracking.