Cold-rolled SPCC and SPCD are low-carbon aluminum-killed steels for general use and stamping use respectively. Both are ordinary cold-rolled steel plates, mainly used in industries such as automobiles and home appliances, and are not special steel plates for enamel. If it is used for enamel, it is easy to produce defects such as scale explosion and pinhole during enamel firing. The reason is that SPCC and SPCD mainly rely on carbide (cementite) and alumina in steel as hydrogen storage traps, but their content fluctuates greatly. Large, thus resulting in unstable anti-scale explosion performance. The low-carbon steel used for enamel often improves the anti-scaling performance of the steel plate and improves the pinhole defect by adding alloy elements such as boron and titanium to the steel.

The cold-rolled ultra-low carbon steel is mainly made of titanium alloy. This type of steel not only has high elongation, but also has high n value, high r value and no timeliness. It is suitable for complex and difficult enamel products. processing requirements. This type of steel is mainly used to make sanitary ware, kitchen utensils and architectural decorative panels.

Decarburized steel is characterized by extremely low carbon content. The significant advantage of this type of steel over enamelling is that the probability of pinhole defects is very small. Decarburized steel plates are mainly used in primary enamel processes, such as making enamel home appliance panels, enamel heat exchange elements, etc.