Temperature and lubricants affect the quality of aluminum alloy surface

Lubricants.

During the rolling process of aluminum alloys, lubricants act as an intermediary between the rolled piece and the rollers. Lubricants can form an oil film on the surface. This oil film is continuous, strong and very thin. The viscosity of the lubricant, the type and content of the additives, the amount of lubricant, and the lubrication method are all very important, which all determine the smoothness of the aluminum alloy surface.

Reduction rate and speed.

The reduction rate is an important parameter for controlling the thickness of aluminum alloys. Its influence on the surface of aluminum alloys is through the oil film.

When the reduction rate increases, the thickness of the oil film becomes thinner, which is conducive to the smoothness of the aluminum alloy surface. When the reduction rate changes to the optimal value, a very thin oil film can make the surface of the aluminum alloy very smooth.

The rolling speed, when the speed is optimal, can make the thickness of the oil film just right, and will not cause wrinkles due to excessive temperature. It will not cause wrinkles on the aluminum alloy surface due to excessive oil grinding.

The influence of the roll temperature.

As the rolling temperature increases, the rolling reduction rate will increase, and the roll surface will become rough.

Uncoiling tension.

The uncoiling tension of the rolling process must be less than the curling tension of the incoming material in the previous process. Otherwise, there will be a slippage, causing friction marks on the surface of the rolled piece.