Why are the bar on aluminum checker plates not qualified

The pine branch pattern may be caused by

the excessive pressure during the production of the aluminum plate;

The lubrication is not good enough during rolling, resulting in uneven metal flow in various parts of the aluminum plate.

The aluminum pattern defect is because

the aluminum pattern plate is damaged by the gate roller of the pattern when it is impurities, and the pattern on the roller is filled with aluminum chips or other dirt, resulting in defects in the pattern of the aluminum pattern plate;

The thickness of the rough material is not enough, which will also make the aluminum pattern look insufficient;

The mechanical damage of the equipment to the pattern plate, or the quality of the ingot itself, can also cause damage to the pattern.