15
2023
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02
Teach you to correctly identify inferior aluminum profiles!
Titanium plating on aluminum profiles belongs to the coating technology. It adds pre-plating and electroplating process steps on the basis of the conventional titanium plating process. The aluminum profile process is to chemically treat the activated plated parts in an aqueous solution of salt and hydrochloric acid; electroplating The plating solution components of the process include nickel sulfate, nickel chloride, boric acid, sodium lauryl sulfate, saccharin, and brightener. This process has the advantages of simplicity, practicality, and good effect. Layer hardness HV≈1500, 150 times more wear-resistant than 22K gold plating under the same conditions, can be processed into a variety of bright aluminum profiles in various forms such as gold, color, and black.
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Titanium plating on aluminum profiles belongs to the coating technology. It adds pre-plating and electroplating process steps on the basis of the conventional titanium plating process. The aluminum profile process is to chemically treat the activated plated parts in an aqueous solution of salt and hydrochloric acid; electroplating The plating solution components of the process include nickel sulfate, nickel chloride, boric acid, sodium lauryl sulfate, saccharin, and brightener. This process has the advantages of simplicity, practicality, and good effect. Layer hardness HV≈1500, 150 times more wear-resistant than 22K gold plating under the same conditions, can be processed into a variety of bright aluminum profiles in various forms such as gold, color, and black.
extrusion defects. In the extrusion process of aluminum profiles, due to whether the extrusion equipment is complete, whether the extrusion process is mature or not, and whether the operation is improper, defects such as bubbles, inclusions, layers, color differences, distortions, etc. will occur, which will affect the quality of aluminum profiles.
Oxide film thickness is thin. The national standard stipulates that the oxide film thickness of architectural aluminum profiles should not be less than 10um (microns). If the thickness is not enough, the surface of the aluminum profile is easy to rust and corrode. Some aluminum profiles without production name, factory address, production license, and certificate of conformity in the random inspection have an oxide film thickness of only 2 to 4um, and some even have no oxide film. According to expert estimates, every reduction in the thickness of the oxide film by 1um can reduce the cost of electricity consumption by more than 150 yuan per ton of profiles.
The chemical composition is unqualified. Aluminum profiles mixed with a large amount of miscellaneous aluminum and waste aluminum can greatly reduce the cost, but it will lead to unqualified chemical composition of architectural aluminum profiles, which seriously endangers the safety of construction projects.
Reduce profile wall thickness. 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 to 0.7mm. For the 46 series floor-to-door type, the minimum wall thickness of the aluminum profiles used by the national standard is not less than 1.62mm. During the sampling inspection, some products are only 0.97 to 1.18mm.
Inferior aluminum profiles greatly reduce the sealing time, reduce the loss of chemical reagents, and reduce the cost, but the corrosion resistance of the profiles is also greatly reduced.
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