Aluminum alloy is a kind of alloy material with aluminum as the main component. Aluminum rods can be hot melted and extruded to obtain aluminum profiles with different cross section shapes. The production process of aluminum profiles mainly includes three processes: melting and casting, extrusion and coloring. However, coloring mainly includes oxidation, fluorocarbon spraying, powder spraying and other processes. So today, we will focus on the oxidation in aluminum profile painting to explain the precautions after aluminum profile processing.
CNC processing of aluminum alloy parts
1、 Four points are required after aluminum profiles are processed and oxidized:
1. Rinse with hot water. The purpose is to age the film, but the water temperature and time must be strictly controlled. The appropriate temperature and time range is: temperature 40~50 ℃, time 0.5~1MIN.
2. Aging. The aging method of aluminum profiles can be determined according to the weather conditions. As long as it is sunny and can be exposed to the sun, it can be baked in an oven in rainy days or in winter. However, the processing conditions of aluminum profile shall be: temperature 40~50 ℃, time 10~15min.
3. Drying. It is better to air dry naturally. The workpiece flushed with hot water is hung on the shelf obliquely, so that the free water on the surface of the workpiece flows down in the straight direction. The water drops flowing to the lower corner shall be absorbed with a towel, and then the color of the film dried in this way will not be affected, which is very natural.
4. Unqualified and repaired parts. Unqualified conductive oxide film parts should be picked out before drying and aging processes, because it is difficult to remove the film layer after drying and aging and will affect the surface roughness of aluminum profile workpiece.
Post treatment of aluminum profile after oxidation and blackening