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- Aluminium Coil Sheet
- In the production process of aluminium coil sheet, quality problems are prone to occur due to equipment or personnel operating errors. Here, the Haomei aluminum industry summarizes the common quality problems as follows. I hope the production department can pay attention to this problem.
Oil pollution is a common quality problem: oil pollution refers to the excessive oil on the surface of the aluminum tip after rolling. And the excess oil other than the rolling oil film is carried, which is visible to the naked eye during the process of slitting production and finished product inspection. These oils are mainly caused by throwing, splashing, dripping on the surface of the box at the roll neck or above and below the exit of the rolling mill, abnormalities in the roll cleaner of the rolling mill, and dripping oil from the rolling mill thickness measuring head, and are often dirty and complex.
Solution: Strictly inspect the production equipment before aluminium coil production. If there is too much oil in the equipment, clean it in time and find the cause. At the same time, clean the surface of the production product. If the product that cannot be cleaned is scrapped, it should be insulated with oil. Aluminum coils are prohibited from entering the warehouse and entering the market.
Scratches are frequent visitors to quality problems: scratches, scrapes, and bruises are intermittent or continuous single groove-like scars on the surface of the insulation aluminium coil sheet. Generally, it is produced when sharp objects slide relative to the foil surface after contact.
The main reasons: the surface of aluminium coil sheet rollers and guide rollers have sharp defects or hard debris; the mechanical guide rollers for shearing, winding, and slitting have sharp defects or dry debris on the guide path. Scuffing: Bundles (or groups) of scars distributed on the surface of the box material due to relative sliding or misalignment between the edges and surfaces, or the surface and the surface contact.
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