What are the causes of bad waterproof plugs

Residuals within the waterproof plug will constitute a random failure of the signal. The main reasons for this phenomenon are: irrational material selection and structure planning, because the heterogeneous data hardness of the plug and socket varies greatly, coupled with congenital defects in the form of structure, constituting the occurrence of residual hazards. Poor adhesion of the polar layer, poor shell appearance pretreatment before plating, copper plating after the appearance of oxidation or plating solution composition is not normal, such as stagnation time is too long, etc., after the installation is likely to cause the membrane interchangeability check flaking, especially the installation of the connector parts. When checking the interchangeability, it is found that there are residual machining burrs or the tolerance fit scale is too small in the installed joint parts, which will reduce the interference metal and produce residue. Poor touch will constitute touch resistance and poor conductivity, which is also a defect in the life of the waterproof plug. From a microscopic point of view, the appearance of any lubrication is uneven. Therefore, when two contact points touch, it cannot be the entire contact surface, but a limited contact. Obviously, the actual touch surface is smaller than the perceived touch surface and the difference depends on the degree of surface lubrication and the amount of touch pressure. The actual touch surface is divided into two parts: one is the direct metal-to-metal contact, and the other is the oxide film formed by interfacial oxidation, the organic gas adsorption film, or the dust formed by the accumulation of the film in contact with each other. Therefore, the touch resistance is high, poor conductivity is mainly due to the following reasons: convergence resistance refers to the current through the touch surface and the current due to the contraction of the touch surface and the shortening of the resistance that occurs. It is formed by contact pressure or heat damage interface film and metal and metal direct contact resistance. Its magnitude is related to the characteristics of the data itself, the production process (e.g. roughness, plating quality and properties after heat treatment, etc.) and the touch pressure. When the touch pressure increases, on the one hand, due to a gradual increase in the number and area of touch contacts, and on the other hand, when the touch surface pressure exceeds the data limit, the touch contact will transition from elastic to plastic deformation.

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