SteelMaking Knowledge Q&A

1. Q. How to understand deoxygenation capacity?

A: The deoxidizer with strong deoxidation ability has a fast deoxidation speed, and at the same time, the product removal speed is also fast.

2. Q: What is the effect of increasing the size of the inclusion?

A: Increasing the size of inclusions is beneficial to the floating of inclusions.

3. Q: What is the shape of inclusions in molten steel?

A: Inclusions have two states, solid and liquid, in molten steel. The reaction product is easy to float when it is a liquid inclusion.

4. Q: What is the effect of molten steel flow on inclusion exclusion?

A:  It can aggravate the accumulation and growth of inclusions; 2. Reduce the floating distance and increase the mass transfer speed. Stirring is used in production to strengthen the flow of molten steel and promote the floating of inclusions.

5. Q: What are the advantages of the carbon pull method?

A: The immediate advantage is the high carbon content at the end point. 1. Reduce the oxygen and nitrogen gas content in the molten pool; 2. Increase the alloy yield: reduce deoxidation consumption, increase residual manganese, save deoxidizer; 3. Reduce steel material consumption: FeO reduction; 4. Improve steel quality: inclusion content Reduction, alloying and stable composition; 5. Improve furnace life: FeO is reduced, and the erosion of slag on the furnace lining is reduced.