7075 aluminum plate is commonly used in precision parts. Sometimes, it will be found that spots will be produced on the surface of 7075 aluminum plate parts. What are the reasons for the spots and the solutions?Next 7075 aluminum plate manufacturers to give you a specific introduction.

The spots on the 7075 aluminum plate parts may be due to metallurgical foaming of the elements inside the 7075 aluminum plate. The solution is to try baking some parts at 150°C for an hour before anodizing to see if this will cause the problem to disappear, but if this is indeed a hydrogen problem, then so be it.

Another cause may be electrolytic corrosion, which is mainly caused by "stray currents" in the anodizing line, the possibility of this happening is minimized if the anodizing line has only plastic cans.If the tanks are metal, the load (rod or rack with components) must be electrically insulated from each tank at all times.In addition, each tank must be grounded - best for water mains, but may also be ground poles or building columns.Metal waterline is the best.

If parts are dyed (especially black), there may be electrolytic conditions in the dye VAT or excessive contamination of the solution in dyes, especially black dyes.

After finishing, thoroughly check the load of the parts behind each jar.This will enable you to find where the situation is occurring.This is very important.If the condition can only be seen when the part comes out of the anodized tank, it may be a good indication of the metallurgical blister.

The causes of spots on the parts of 7075 aluminum plate and the solutions are introduced here. You can consult us if you need to know the price of 7075 aluminum plate.