What are the factors that cause aviation connector joints to heat up?

I. What are the factors that cause the aviation plug connector to heat up?1. Failure of the protective coating on the connector surface can lead to corrosion of the connector contacts.2. Chemical and electrochemical corrosion:Pure metals are prone to transition from high-energy states to low-energy states in atmospheric environments due to their thermodynamic instability, and therefore corrosion of metals in atmospheric environments is a natural law. Corrosion of metals - there are generally two cases, namely chemical corrosion and electrochemical corrosion. Because chemical corrosion is extremely slow, it does not become a major factor in the heating of joints. Electrochemical corrosion system is a self-contained system of the circuit, the generation of corrosion current, so that the anode continues to dissociate, so that the corrosion may continue, so that the joint area tends to decrease, the process from time to time to produce and accumulation of sedimentary film as well as the anode metal surface produced by the passivation of the film will significantly increase the contact resistance of the joints, a significant increase in the joints temperature rise, resulting in a vicious cycle, the joints to become the main component of the main component of the factors of the heat. 3. metal Wear and tear:As a result of external forces or the thermal expansion and contraction of the metal itself, as well as the impact of load fluctuations between peaks and valleys, the connector joints will have fewer and fewer contact points. The result is more corrosion on the contact surface of the aviation plug connector, so the contact resistance gradually increases, and the temperature rise at the connector gradually increases.

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