Why is the oxidation blackening after tin on the electronic wire harness? Many people think that it is a climate problem, it may be that the weather is too cold or the temperature is too high, etc. After many practical tests and improvements, it is found that the climate problem is only one of the influencing factors, but this factor can be effectively controlled.
Untreated copper wire or tinned copper wire will also oxidize in the absence of tin, copper is oxidized in air in two steps, first react with oxygen to form copper oxide; then copper oxide and carbon dioxide in the air reacts with water to produce green patina, and the oxidation of copper is a normal chemical reaction. The greater the weather humidity, the more water droplets will be attached to the surface of the product. The more stagnant or colder the air, the more difficult it is for the droplets to evaporate, accelerating the oxidation reaction between the copper and the air that causes the tin to blacken.
Then the most suitable way to solve the problem of tin on the electronic wire harness is to use vacuum and isolation technology, which can make the product tin layer form a layerof completely transparent, and complete decomposition. And after high temperatur isolation film formation technology , this can make the product anti-oxidation time up to one year, in fact, the product nickel plating and gold plating also use this technology.