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Analysis of the causes of black and rusty PIN needles
For the PIN pin, the external cause is the use environment of the PIN pin terminal. As described above, a reaction also occurs in a humid high-temperature environment, and copper is easily oxidized at a high temperature. Usually not high humidity and temperature environment, the aging rate of the product is very slow, if in this case the product can be identified as the problem, that is, the quality of the product itself.
1. connectorPIN PinThe essence of blackening and rusting.
The blackening of copper parts is actually the result of copper being oxidized in a high temperature environment, and its main component is copper oxide. Its reaction formula is 2CU O2 = 2CuO;
2, copper rust is the result of the reaction of copper with oxygen, water and carbon dioxide. The reaction equation is: 2CU H2O O2 CO2 = Cu (OH)2 CO 3;
2. connectorPIN PinCauses of blackening and rusting
1. Internal reasons
ConnectorPIN PinThe internal reason is also the terminal itself, that is, the quality of the terminal copper parts. The material of the terminal conductor part on the market is selected from copper, iron, and all other non-zinc alloys commonly used metals. The different materials determine their performance: First, copper is usually slow in the aging process, and there is usually a layer of metal coating during processing, so of course, if the copper turns black, it is oxidation. The oxidation reaction can conclude that the products in the electroplating and protection process are not well done; secondly, iron is easy to rust, especially in a warm and humid environment, if copper is found in copper brown matter containing iron impurities, copper will not rust, such as copper process, is a bad terminal quality. Zinc alloys are unsuitable bodies of conductive material in terms of current transfer, making the terminals unsuitable.
(2) External causes
ForPIN Pin, The external reason is the use environment of the PIN pin terminal. As mentioned earlier, reactions will also occur in a humid high-temperature environment, and copper is easily oxidized at high temperatures. Usually not high humidity and temperature environment, the aging rate of the product is very slow, if in this case the product can be identified as the problem, that is, the quality of the product itself. Electric heating will destroy the insulation and protective layer, and excessive current will cause the product to heat up, which will increase the speed of terminal aging.
Any kind of product needs regular maintenance and maintenance, whether it is good or bad quality. If it is found that the conductor has magnetic conductivity or black rust should be replaced in time, otherwise power consumption, circuit breaker or accident .. Good quality PIN pin connector should be regularly maintained, regular investigation, has been used in a dry environment.
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