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Solutions to common problems with aluminum plate Mingtai Alu

Edit:Mingtai Date: 2019-05-27 15:39
In the production process of aluminum strip, quality problems are easy to occur due to equipment or personnel mistakes. The common quality problems of Mingtai Aluminum are summarized below, and I hope to help you.
Oil stain is the most common quality problem: oil stain refers to the excessive oil on the surface of the aluminum tip after rolling, and it carries the excess oil except the rolling oil film, which is visible to the naked eye during the slitting production and finished product inspection. With oil. These oils are mainly caused by the upper and lower rolls at the roll neck or at the exit of the mill, splashing, dripping on the surface of the box, and the abnormality of the rolling mill's roll-cleaning device, and the dripping of the mill's thickness gauge, which is often complicated by dirty components.
This kind of oil stain will bring great harm to the surface of the aluminum coil: First, since the aluminum coil finished product is mostly used as a decoration or packaging material, it must have a clean surface; secondly, its thickness is thin, and it is easy to form a bubble shape in the subsequent annealing. Moreover, due to the large amount of oil, excessive residue is formed there and the use is affected. How much oil defect is a very important indicator for evaluating the quality of aluminum foil.
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.
Scratches are frequent customers of quality problems: scratches, abrasions, and bruises are intermittent or continuous on the surface of an aluminum sheet. A single grooved scar. It is generally produced when the sharp object slides in contact with the surface of the foil.
The main reasons are: the roll, the guide roller surface has pointed defects, or stuck with hard debris; the shearing, winding, slitting mechanical guide roller, guide path has pointed defects or dry debris. Scratch: A bundle (or group) distribution of scratches on the surface of a box due to the relative sliding or misalignment between the edges and faces of the object or the surface.
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