What quality problems are encountered with aluminum coils after they are manufactured?

Lax production supervision, equipment failure, incorrect operation will lead to aluminum coil quality problems. Quality problems affect the product quality of the aluminum coil production plant, resulting in economic losses. Therefore, when the quality problem occurs, it should be solved in time. So, what quality problems will be encountered after the production of aluminum coil

First, the gas strip and slag

In the casting and rolling on the possible causes: the production process is not strictly enforced (refining is not in place), the furnace in addition to the gas is not in place (in addition to the gas box leakage), aluminum water treatment is not in place, the role of filtration is not obvious (filtration box can not be used properly), the air is too heavy moisture.

Rectification measures: a one-time feeding, according to the operating process, sprinkle covering agent, strengthen refining, to solve the problem of air leakage in the degassing box, aluminum water treatment is clean, increase the filtering device to ensure that the aluminum water is filtered.

Second, long strips of small cracks

Casting and rolling on the possible causes: nozzle skin damage or injury

Rectification measures: the skin of the above problems immediately break the plate to ensure that the production of the skin intact.

Third, black bars

Casting and rolling on the possible problems: the process is not implemented in place, the aluminum water treatment is not good.

Rectification measures: the development of the production process, strengthen the aluminum water treatment.

Fourth, scratches

Cast and rolled on the possible causes: shearer under the table surface friction caused by the surface of the aluminum plate.

Rectification measures: rectification of the shearer under the table surface.