What are the uses of magnesium oxide produced by magnesium oxide manufacturers in silicon steel

Magnesium oxide manufacturers introduced that after decarburization and annealing of oriented silicon steel in successive furnaces, the upper and lower surfaces of the strip steel should be evenly coated with magnesium oxide coating solution. Magnesium oxide is the primary barrier agent to prevent the strip from sticking during high temperature annealing. It can remove impurities such as nitrogen and sulfur in steel together. In addition, it also reacts with the SiO2 on the surface of the steel, presenting a high-quality magnesium silicate insulation bottom layer. Therefore, the quality of magnesium oxide on the surface of grain-oriented steel plays an important role in the quality of steel products. 97 fused magnesia

Magnesium oxide manufacturers introduced that the magnesium oxide coating solution is now coated by a two-roll coater. The double-roll coating machine is composed of an upper coating roller, a lower coating roller, a tray, a magnesium oxide coating liquid circulation device, and a nozzle that sprays the magnesium oxide coating liquid from the magnesium oxide coating liquid circulation device to the upper surface of the strip steel. The lower coating roller is of type I. Embedded in the tray, the nozzle overflows into the tray and sprays into the upper surface of the strip, and the lower coating roller uses the magnesium oxide coating liquid in the tray. The coating on the outer surface of the strip.

However, because the activity of the magnesium oxide solution in the bath circulation is poor, the reaction of magnesium oxide and water constitutes the accumulation of magnesium hydroxide, and the combination of Mg(OH)2 and CO2 in the air constitutes a simple accumulation of magnesium carbonate . Magnesium carbonate and magnesium hydroxide have poor activity and are easy to pile up. Therefore, the activity of the coating liquid in the tray is not high. With the passage of time, the coating liquid will simply accumulate. The coating quality of the under-coating roller is poor. There are two lines with different widths and numbers along the strip rolled to the surface of the plate. The wear of the coating roller directly constitutes a product quality defect. In severe cases, it is necessary to connect and replace the coated rollers, remove the blockage of the circulation pipe, and deal with the scaling of the tray.

Magnesium oxide manufacturers introduced that on the one hand, these poor problems have greatly increased the labor intensity of employees; on the other hand, they interfered with the continuous production on site and directly affected the output power. At the same time, because the cured magnesium oxide coating solution cannot be used in the tray, it is not only difficult to clean, but also wastes magnesium oxide. In addition, because there is liquid splashing at the edge of the coating roller, it affects the quality of the coating film and affects the operation of the coating machine. The oxide scale on the edge of the coating roll makes the coating on the edge of the strip uneven.