Appearance problems and treatment of pressed aluminum sheet oil
The pressed aluminum plate is gradually favored by designers because of its light weight, high strength, rich color and convenient installation. It is widely used in various steel structures, but in the production process of pressed aluminum strip, oil stains and scratches will occur. Questions, etc., to introduce you to the knowledge of oil pollution problems:
Oil stain refers to the excessive oil on the surface of the aluminum tip after rolling, and the excess oil is removed except for the rolling oil film. The surface visible to the naked eye during the slitting production and finished product inspection is mainly carried by the roller. At the neck or at the exit of the mill or below, the smashing, splashing, dripping on the surface of the box and the abnormality of the rolling mill's clearing roller, and the dripping of the mill's thickness gauge are often complicated by dirty components.
Oil pollution hazard: the surface is not clean, it is easy to form a bubble in the subsequent annealing, and the excessive amount of oil is formed at this place to affect the use.
Solution: Strictly check the production equipment before production. If it is found that the oil in the equipment is too much, it should be cleaned and found in time. At the same time, the surface of the production product should be cleaned. If the product cannot be cleaned, the oily product will be discarded. It is forbidden to enter the warehouse and enter the market.
Appearance problems: Scratches, abrasions, and bruises are intermittent or continuous on the surface of the aluminum plate. A single groove-like flaw is generally generated when the sharp object is in sliding contact with the surface of the foil.
The main reasons are: the roll, the surface of the guide roller has pointed defects, or stuck with hard objects; the mechanical guide roller for cutting, winding, and slitting, the guide path has sharp defects or dry debris. An edge-to-face, or surface-to-surface contact that causes a relative slip or misalignment to cause a bundle of scars on the surface of the box.
The oil stain on the surface of the board seriously affects the appearance quality of the product. By optimizing the quality of the cast strip, controlling the quality of the cold rolled rolling oil and the roughness of the work roll, strengthening the cold-rolled sheet surface degreasing and the cross-cut straightening machine, the oil on the surface is obtained. Effective control.
The above is the reason for the oil pollution and appearance problems of the pressed aluminum plate, and I hope that it will help everyone.
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