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customized aluminium channel profiles introduce the cause of yellowing on the surface of profil aluminum supplier china
Release time:
2021-09-29 08:59
Source:
We all know that profil aluminum supplier china is an alloy extrusion material, and improper operation of one step in the production and processing process can easily cause damage to the material and surface defects of the profile. The surface color of the normal profil aluminum supplier china should be silvery white, but what are the reasons for the yellowing phenomenon sometimes. Follow the editor of customized aluminium channel profiles to get a simple understanding!
There are two main reasons for the yellowing of the surface of profil aluminum supplier china, one is the improper cooling method during the extrusion process of the profile, and the other is the improper surface treatment process of the profile. The specific analysis is as follows:
1. The profil aluminum supplier china needs to be cooled after being extruded by a mold, in order to improve the mechanical and physical properties of the material. Coolant needs to be used in the cooling process, and different materials have different effects. Common ones are water or oil-based coolants. If water is used for cooling or the proportion of copper in the cooling liquid is too much, it is easy to cause yellowing of the surface of the profile. The reason is that aluminum is an active chemical metal element, and it is prone to chemical reactions when it comes in contact with materials in the air and water.
2. An oxide film is attached to the surface of profil aluminum supplier china, which can increase the corrosion resistance and surface aesthetics of the profile. Before the surface treatment of the profile, the extruded profile needs to be cleaned to remove the oil on the surface. If the surface of the profile is not cleaned in place, the oxide film is not easy to be colored in the subsequent oxidation process, or the coloring is uneven, resulting in yellowing.
The above is an introduction by the editor of customized aluminium channel profiles: an introduction to the cause of yellowing on the surface of profil aluminum supplier china.
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Tel: 86-512-53640771
Fax: 86-512-53640769
E-mail：sales@alumag.com.cn(Domestic sales)
export@alumag.com.cn(Export)
Web:http://www.alumag.com.cn/
Address: No. 9, Xingang East Road, Liujiagang, Fuqiao Town, Taicang City, Jiangsu Province, China