Module 5: Steelmaking in India
	Lecture 42: Self Assessment questions
3a) Draw a neat sketch of the setup for the continuous casting of steel.    (06) 3b) What are the metallurgical controls adopted in the tundish. How do you avoid dead zones in the tundish?           (08) 3c) Explain the effects of melt superheat and the rate of withdrawl on the quality of the concast billet.        (06)   4a) Explain the cause of pipe formation during solidification. How can it be prevented?   (05) 4b) Describe the mechanism of solidification of killed steel.   (05) 4c) What are the principle objectives of oxidizing and reducing periods in electric arc furnace steelmaking?    (08) 4d) Enumerate the factors that determine the consumption of electrode in EAF steelmaking. (02)   5a) What do you understand by complex deoxidation of steel melt? What are the advantages of complex deoxidation over simple deoxidation        (08) 5b) Give the evolution philosophy of combined blown steelmaking. What are the operational benefits of this technology?     (06) 5c) Explain the sequence of elimination of impurities between top blown and bottom blown converter steelmaking.   (06)