When the 7075 aluminum plate is finished, there may be small black spots on the surface, which may be due to the surface oil pollution.  7075 aluminum plate manufacturers will introduce to you the reason for the oil pollution on the surface of 7075 aluminum plate.

When the 7075 aluminum plate needs to be rolled after production, it needs to be lubricated at this time, then it needs lubricating oil at this time, and a lot of oil will be attached to the surface of the 7075 aluminum plate.

In the hot rolling machine, there will be a lot of grease, on the roller or other parts or less. When the raw material of 7075 aluminum plate passes through, it will affect the 7075 aluminum plate.

Another is in the quenching operation, the excess oil will remain to the surface of 705 aluminum plate, causing a certain impact on the surface.

If there is oil pollution, it needs to be cleaned up in time. Next time, 7075 aluminum plate manufacturers will tell you about the method of cleaning oil pollution.

The above is about the cause of oil pollution on the surface of 7075 aluminum plate. If you want to know the price of 7075 aluminum plate, you can contact us.