In the aluminum strip production process, because of equipment or personnel operating errors and other reasons are prone to quality problems, here Henan Mingtan aluminum veneer manufacturers on some common quality problems summarized in the following aspects:
Oil contamination is a quality problem as common: oil contamination refers to the surface of the aluminum tip after rolling with the most excessive oil. And with the excess oil in addition to rolling oil film, in the slitting production and finished product inspection process visible surface with oil. These oils are mainly from the roll neck or mill exit on, below the dumping, splashing, dripping on the box surface as well as mill roll clearer abnormalities, mill thickness head oil drops, etc., and often dirtier composition complex.
This oil will bring more harm to the surface of the aluminum coil: First, because most of the finished aluminum coil as a decorative or packaging materials, there must be a clean surface; Secondly, its thickness is thin, in the subsequent annealing is easy to form bubbles, and due to the amount of oil is more in the formation of excessive residue in the place and affect the use. How many oil defects is a very important indicator to evaluate the quality of aluminum foil.
Solution: Strictly check the production equipment before production, if once found too much oil in the equipment should be cleaned in time and find out the reason, at the same time, the production of products for the board cleaning process, if the cleaning can not be done off the product to do the waste treatment, there is a ban on the oil contamination of the product into the warehouse and into the market.
Scratch is a frequent visitor to quality problems: scratches, abrasions, bruises is the surface of the aluminum plate presents intermittent or continuous. Single groove-shaped scars. Generally sharp objects and foil surface contact with the relative sliding produced.
Produce the main reason:Roll, guide roll surface with sharp defects, or stick with hard debris; shear, coiling, slitting mechanical guide rolls, guide road with sharp defects or withered with debris. Abrasion: due to the objects between the prongs and surfaces, or surfaces and surfaces in contact with the occurrence of relative sliding or misalignment caused by the surface of the box material in bundles (or groups) distribution of scars.
In the transport of aluminum sheet material, but also pay special attention to do a good job of anti-knock work, loading, be sure to load the stable fixed, do not put on top of other goods. Best lined with paper core or aluminum core to prevent deformation of the aluminum coil in the process of transportation, if it is rained on in the transport process, it may have led to the surface of the uniform corrosion, especially aluminum foil is more prone to bruises, bumps, in the loading and unloading of goods on top of the aluminum plate should be covered with a tarpaulin to avoid losses due to the rain, snow and other weather reasons, but also pay attention to not put on top of other goods.