The aluminum coil processing technology provided by GNEE adds a process of spot welding on the end face of the aluminum coil between the two processes of tension straightening, cleaning and finished product annealing, and the number of aluminum ring layers welded and adhered through spot welding is no less than two. When annealing the finished product, the layers will be heated and expand at high temperatures. Due to the different degree and speed of heating from the inside to the outside, there will be mutual misalignment between the layers.
In the aluminum coil processing process provided in this embodiment, spot welding is performed. , the formed solder joints weld together at least two layers, and the mutual displacement between the layers cannot occur within the solder joints. The phenomenon of aluminum coil sticking defects caused by inter-layer displacement is also improved, greatly improving the quality of the aluminum coils.
In addition, the outer ring is not effectively fixed, which will cause inter-layer dislocation due to different expansion degrees between the layers. This inter-layer dislocation will cause inter-layer adhesion defects of the aluminum coil and form white marks on the surface. , not only affects smoothness, but also affects performance quality. This defect is not acceptable to some users, so quality problems will occur at the production site or in the sales market, resulting in scrap products.
