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What are the reasons for the blacking of industrial aluminum?

Update:15-08-2017
Summary:

In the current construction of the house in the industr […]

In the current construction of the house in the industrial aluminum can not participate in the industrial aluminum can be used for building doors and windows, curtain wall, indoor and outdoor decoration and architectural structure with aluminum than all aluminum. We all know that industrial aluminum compared to the previous stainless steel, it is not easy to oxidize the advantages of black, but sometimes because of our improper use will also cause black, the following  aluminum manufacturers to understand the easy to black For several reasons.
Industrial aluminum profiles
1, because the cleaning agent has a strong corrosive, if used improperly, it will cause corrosion of aluminum oxide.
2, external factors, because aluminum is active metal, in a certain humidity and temperature conditions easily oxidized black or moldy.
3, aluminum alloy material in the cleaning or after the improper handling, for the mold to create the conditions to accelerate the formation of mildew.
4, many manufacturers in the processing program, do not do any cleaning treatment, or cleaning is not complete, it will make the surface of some corrosive substances, will accelerate the long mold point of aluminum.
5, storage storage height is different, can also cause oxidative moldy phenomenon.
To sum up, lead to industrial aluminum mold black and black there are many reasons, we only in the usual use of maintenance process to note the above reasons can be a few.http://www.jiayunaluminium.com/