Modern metal rolling is performed on rolling mills equipped with automatic thickness and shape control systems (see Figure 1). Flat castings or billets are fed between two counter-rotating rolls. The friction exerted by the rotating rolls typically forces the rolled material into the gap between the rolls. Once in the gap, the rolled material deforms under [...]
In strip casting and rolling production, equipment failures often directly impact product quality and production efficiency, a critical issue for XUANSN, which prioritizes high quality. Proper equipment maintenance and management is not only fundamental to ensuring smooth production, but also essential for XUANSN to achieve high-quality production. This issue is particularly prominent in the production process [...]
(1) Coarse Grains. Coarse grains often manifest as wheat-ear crystal structure. As mentioned above, due to the lack of active crystal nuclei in electrolytic aluminum liquid and superheated aluminum melt, the energy of homogeneous nucleation is higher than the energy of nucleation on the surface of the casting roller sleeve. Therefore, during the casting process, when [...]
Capacitor surface defects include: (1) Horseshoe cracks. As a typical capacitor surface defects, horseshoe cracks are easy to appear when the casting and rolling process is abnormal. Its distribution surface is large and dense, and it may appear in groups, and sometimes even expand to the entire plate surface. The probability of a single occurrence is small. This [...]
1 Quality inspection of casting and rolling process in capacitor foil rolling When the casting and rolling process is normal, the plate is inspected for quality. This operation is particularly important in capacitor foil rolling production. Chemical composition inspection: After the chemical composition adjustment is completed, take a sample from each furnace door in the mixing furnace [...]