Why process Q345B steel plate?

1. Regulations on steel rolling processing technology

The practice of rolling steel shows that the molten steel must have a suitable and stable temperature during the whole rolling process, which immediately affects the production efficiency of rolled steel and the quality of cast slabs, as well as product quality. As everyone knows, among the main parameters of many actual steel rolling operations, the molten steel temperature or hydrogen pressure is one of the factors that cannot be predicted and analyzed. The only way is to use the external heat source to control the temperature of the molten steel to ensure a suitable and stable temperature or hydrogen in the entire rolling process. Pressure.

2. The benefits of Q345B steel inner package heating

It can reduce the temperature pulsating beverage of molten steel in the intermediate storage, and complete the temperature-controlled pouring of low hydrogen pressure, which is beneficial to the smooth pulling speed and the improvement of product quality.

1) It can prevent premature condensation, which is beneficial to avoid safety accidents such as loop formation, locking, refining, and stop pouring.

2) It can increase the continuous pouring time, which is beneficial to improve the yield and production efficiency.

3) It can reduce the tapping temperature of Q345B steel plate ironmaking by about 15-20℃, which is beneficial to environmental protection, energy saving and refractory saving.

3. The enforceability of heating for the positive tundish of Q345B steel plate

The positive tundish is the intermediate vessel between the ladle and the continuous casting mold. It is the final process of controlling the Q345B steel sheet molten steel into the continuous casting mold. Compared with ladle heating such as LF furnace, the volume of the positive tundish is small, and the volume of the heating equipment is not large; it can also be operated on-line, which does not easily affect the rhythm of production and is also beneficial to improve efficiency.