What are the control measures for surface peeling of Q345B steel plate?

The billet of Q345B steel plate is cold rolled into hot rolled plate after hot delivery. After cold rolling, it is made into cold rolled sheet, hot galvanizing and other products. The product quality standard is high.

Generally, the quality of hot rolled Q345B steel plate is relatively stable, but sometimes a small amount of Q345B steel plate is intermingled and peeled, which has a negative impact on the manufacturing operation and product operation.

1. The total argon flow rate of the packing rod during operation.
2. Strictly control the casting process.
Effective casting process can produce excellent potential flow and excellent liquid steel flow in continuous casting mold, which is beneficial to improve the quality of slab.
3. Reduce the fluctuation of mold level.
4. Improve the management of the manufacturing process of tundish.