How to choose aluminum profiles and distinguish inferior aluminum profiles?

by:Zeyi     2021-09-10
How to choose aluminum profiles and distinguish inferior aluminum profiles? It must be what everyone wants to know. Here, I would like to talk to you about the precautions for purchasing and using aluminum alloy construction profile products and distinguishing inferior aluminum profiles:    1. Precautions for purchasing and using aluminum alloy construction profile products 1. Check the factory certificate of aluminum profile products , Pay attention to the date of manufacture, specifications, technical conditions, company name and production license number.  2. Carefully observe the surface condition of the aluminum profile product. The product should have bright colors and good luster, and the surface should not have obvious defects such as scratches and bubbles.  3. Be sure to pay attention to the wall thickness of aluminum profile products. The thickness of aluminum profile products for doors and windows should not be less than 1.0mm. 4. Pay attention to the thickness of the surface coating of the product. The film thickness of anodized products is not less than 10μm, the film thickness of electrophoretic paint products is not less than 17μm, and the thickness of powder spray coating does not exceed the range of 40-120μm. Fluorocarbon paint spraying The product should be above the second coating and not less than 30μm.  5. It is best for users in coastal areas to choose electrophoretic painted aluminum profiles with good corrosion resistance, powder sprayed aluminum profiles or fluorocarbon sprayed aluminum profiles.  6. u200bu200bBrushes and other hard objects should not be used as cleaning tools during routine maintenance. Soft cotton yarn and cotton cloth should be selected.  7. Water, detergent and soap can be used for cleaning, but other organic substances cannot be used. 2. How to distinguish inferior aluminum profiles:   Extrusion defects: During the extrusion of aluminum profiles, due to the completeness of the extrusion equipment, the maturity of the extrusion process and the improper operation, there will be bubbles, inclusions, layering, color difference and distortion, etc. Defects affect the quality of aluminum profiles.   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. After random inspection, some aluminum products 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 power consumption cost per ton of profile can be reduced by more than 150 yuan. Unqualified chemical composition: Aluminum profiles mixed with a large amount of miscellaneous aluminum and scrap aluminum can greatly reduce costs, but will lead to unqualified chemical composition of architectural aluminum profiles, which seriously endangers the safety of construction projects.   Reduce the wall thickness of the profile: 90 series sliding window type, according to the national standard, the minimum wall thickness of the aluminum profile is not less than 1.4mm, and some products are only 0.6-0.7mm in the random inspection. For 46 series of floor bomb doors, the minimum wall thickness of the aluminum profile used in the national standard is not less than 1.62mm, and some products are only 0.97-1.18mm in the random inspection. 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 greatly reduced.
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