Aluminum is divided into raw aluminum and cooked aluminum. Raw aluminum is less than 98% aluminum, which is relatively brittle and hard, and can only be foundry casting products; cooked aluminum is more than 98% aluminum, which is soft in nature and can be rolled or punched in a variety of utensils. Hangzhou Hongcheng Precision Machinery Co., Ltd. is a professional aluminum foundry and aluminum die-casting manufacturer, capable of creating high-quality products. Let me talk about the identification of the characteristics of inferior aluminum profiles.
1. Unqualified chemical composition
The cost of aluminum profiles doped with a large amount of miscellaneous aluminum and scrap aluminum in the products is greatly reduced, but it will cause the chemical composition of the building aluminum profiles to be unqualified, and seriously endanger the safety of construction projects.
2. Reduced closing time
Inferior aluminum profiles greatly reduce the sealing time, reduce the loss of chemical reagents, and reduce costs, but the corrosion resistance of the profiles is also greatly reduced.
3. Thin oxide film thickness
National standards stipulate that the oxide film thickness of architectural aluminum profiles should not be less than 10um (micrometers). If the thickness is not enough, the surface of the aluminum profile is easy to rust and corrode. In the random inspection, some aluminum profiles without production name, factory location, production license, and qualification certificate have an oxide film thickness of only 2 to 4um, and some do not even have an oxide film. According to experts' estimates, for every reduction in the thickness of the oxide film by 1um, the cost of electricity consumption per ton of profile can be reduced by more than 150 yuan.
4. Unqualified chemical composition
The aluminum profile mixed with a large amount of miscellaneous aluminum and scrap aluminum can greatly reduce the cost, but it will cause the chemical composition of the building aluminum profile to be unqualified, and seriously endanger the safety of the construction project.
Unqualified aluminum profiles will be deformed due to the influence of air, rain, etc. during use. Inferior aluminum profiles are not only a tofu project, but also endanger our safety. Therefore, we must find a reliable one. factory.
