In
aluminum plate with the production process, because the equipment or personnel error prone to quality problems such as reasons, aluminium is common quality problems summarized below here, hope the production department to attach importance to this problem.
Oil is a common quality problems: pollution is refers to the rolling aluminium tip surface with oil after the too much. And bring the excess oil, other than the rolling oil film in the process of cutting production and finished goods inspection visible surface with oil. These oil mainly by roll neck or mill on exports, bottom left, splash, dripping on the box, and the abnormal, rolling mill, rolling mill roller clearer thickness head drops of oil, and often complex than dirty.
This oil pollution will bring great harm to the surface of the
aluminum coil: first, because most of the finished aluminum coil products are decorative or packaging materials, there must be a clean surface; Second, its thickness is thin, it is easy to form bubble in subsequent annealing, and it is affected by the excessive amount of oil in the area. The oil pollution defect is an important index to evaluate the quality of
aluminum foil.
. Solution: strict inspection equipment before production, if once found in the device too much oil to wash and timely find the reasons, at the same time to board face cleaning products processing, if wash not to drop products do scrap processing, oil product storage and flow into the market is prohibited.
Scratches are frequent customers of quality problems: scratches, bruises, and bruises are intermittent or continuous on the surface of the
aluminum sheet. It is usually produced when the sharp object is sliding relative to the surface of the foil.
The main reasons are: there are pointed defects on the surface of roller and guide roller. Shear, coiling, cutting mechanical guide roller, guide road with pointed defect or dry debris. Bruise: a scar on the surface of a box that is caused by a relative slip or dislocation due to the surface or surface of an object, or by the relative slip or dislocation after contact with the surface.