When purchasing aluminum busbar products, do you want to use as long as possible ? Do you know the useful life of aluminum busbar is related to the surface treatment technology ? Do you know the unqualified aluminum busbar treatment technology make the aluminum busbar to reduce life, as well as the qualified treatment technology can add the useful life ??
Pure aluminium is very soft and is not very strong, has better elongation, can pulling into threadleft and rolling into a foil. There are many methods of surface treatment technology for aluminium, the mostly use methods in aluminium busbar products are acid cleaning, sand blasting, alkali corrosion, acid sand and so on. Sandblasting is physical process, the others are chemical method technology. And so what's the difference between these technology? What's the relationship between the technology and the useful life of aluminium busbar?
Acid cleaning is a method of use acid solution to remove oxide and rust on the metal surface. Use acid cleaning consume long time, result in the high processing cost. As the effect of thick oxide coating is not ideal, especically the black slag on the welding point is not going to get rid of it, and corrosion resistance is hardly reach to the ISO country standard, because of the oxide aluminium enclose to the surface of aluminium, and the oxidation of hole after oxiding is rather big, easy to appear the nonuniform performance in surface treatment. So the aluminium busbar which use this technology has unkempt, air tightness is poor, easy occurs nartual leakage. if there is any leaking performance , aluminium busbar will be greatly reduce the useful life.
Alkali corrosion technology has high quality of aluminium material, only apply to pure aluminium ignot. because of high demand of alkali corrosion technology, if it has badly alkali corrosion the aluminiumm surface can appear long grooved,spot etc.
In the introduction of sand blasting, aluminium is a metal of strong electronegativity, has strong agreeableness with oxygen atom. aluminium can energy a thin and dense layer of oxide film, this oxide film has certain protective effect, but this film takes more than 48 days to generate the require time in a natural environment, as well as nonuniform, so the aluminium busbar which generate from a natural environment has badly non-corrosion and air tightness, easy to result in solution reveal. while acid sand technology is make aluminium uniformly generate 8-12 silk oxide film in short time, can protect aluminium. Due to the electrical conductivity of oxide film is very low, so can blocking cathode rection, make aluminium not appear corrosion. The aluminium busbar which use this technology will have uniformly non-corrosion layer, chemical properties stability, so, to a certain extent, use this technology to produce aluminium busbar can have long life than other technology products.
