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The most common quality defects of aluminum coils

Date: 2019-05-17 13:48
Aluminum coils are metal products used in flying shears after foundries and are calendered and stretched. Aluminum coils are widely used in electronics, packaging, construction, machinery and other industries. There are many aluminum coil production enterprises in China, and the production process has caught up with developed countries. However, in the manufacture of aluminum coils, some quality defects are inevitably encountered. What are the common quality defects of aluminum coils?
1. Composite layer shedding: irregular defects formed by the aluminum cladding of the composite material, leaving the substrate and falling off.
2, embossing: due to strip wrinkles, broken strips and other causes of irregular surface chromatic aberration during the rolling process is printed on the surface of the strip chromatic aberration phenomenon.
Wave: A general term for various inhomogeneities caused by uneven deformation of plates and strips. The waves generated by the plates and edges are called edge waves, the waves generated in the middle are called medium waves, and the waves between the middle and the edges are neither in the middle nor on both sides. -rib wave, small size. Usually, a circular wave is called a broken wave.
4. Warpage: After rolling or cutting, the edges of the strip are lifted.
5, side bend: the longitudinal side is the plate, and the belt exists in a non-flat state that is curved to the side.
6. Folding: The core of the coil is severely deformed and the roller is not round.
7. Interlaced layer: Irregularly, it is displaced between the end layer and the strip layer and also results in uneven end faces.
8. Tower shape: The belt layer and the layer are swayed to one side to form a tower-like offset.
9. Loose rolls: Loose between layers during winding and unwinding, which in severe cases affects the entire roll.
10. Bird's Nest: Produces a local "V" type defect at the end face of the coil. This defect is generated during or after the coil take-up process, and some is generated after a period of time.
The above is about the common quality defects of Mintai Aluminum Coil. According to the different metal elements contained in the aluminum coil, the aluminum coil can be divided into 9 categories, which can be divided into 9 series: 1000 series, 2000 series aluminum board, 3000 series aluminum board, 4000 series. Aluminum plate, 5000 series, 6000 series, 7000 series, 8000 series, 9000 series.

Mingtai Aluminum, as a large aluminum products manufacturer, mainly produces 1000 series, 2000 series, 3000 series, 4000 series, 5000 series, 6000 series of high quality aluminum alloy products,they are used in: mold, packaging, shipbuilding, construction Industry and other industries. Aluminum sheet,aluminum coil, aluminum foil are all high quality products,  they are selling to the United States, Canada, India, Australia and other parts of the world,establishing long term cooperation relationships.
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