The reasons are the formation of an oxide layer, materials, the manufacturing process and environmental factors.
1. Oxide layer formation: The oxide layer on the surface of the aluminum frame will gradually form over time. The existence of the oxide layer may cause black lines to appear on the surface of the frame.
2. Material reasons: The materials of the aluminum frame and welding wire may not match, resulting in corrosion, reaction, etc. during use, thus forming black lines.
3. Manufacturing process: There may be problems with the manufacturing process of the aluminum frame and welding lines, such as insufficient cleaning and surface treatment, resulting in black lines during use.
4. Environmental factors: Factors such as humidity and high temperature in the usage environment may alsomay affect the aluminum frame and welding wires, resulting in the appearance of black lines.
The surface quality of solar frame aluminum profiles is not good.
The deformation and curvature of the solar frame light fixture is caused by the fact that the surface quality of the solar frame aluminum profile is not good, and defects will appear over time , such as bending, twisting. and deformation. Simply remove the heat collector tube and water bucket, brace them and then reinstall them.