JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

This course is primarily of industrial oriented ore and designed to make

the student to understand and demonstrate the various types of primary steel making processes, Hot metal route and scrap route, casting pit side practice, Continuous casting of steel and secondary steel making process to produce quality steels.

Course Outcomes

The student would gain knowledge on different primary and secondary

steel making processes to produce quality steels with less cost and more efficiently.

UNIT - I

Introduction to Steel Making: Current scenario of steel making in India and world, Raw materials of steel making. Factors affecting the efficiency of steel making. Principles of Steel making;- Removal of Carbon, Silicon, Manganese, phosphorous and sulphur. Role of slag, types and properties of slags. Molecular and ionic theory of slags. Principles of deoxidation. Precipitation and diffusion deoxidation.

UNIT - II

Primary Steel Making (Hot Metal): Steel making by Acid and Basic Bessemer Processes, Construction and lining details, sequence of elimination of impurities, Steel Making by LD process, Construction, lining and process details in LD, LD-AC or OLP, Kaldo, LD-Kaldo, Rotor oxygen steel making, Oxygen bottom blowing (OBM), Hybrid process of steel making, Improvements and modification of the above steel making process.

UNIT - III

Primary Steel Making (From Scrap): Open Hearth Steel Making: Construction and process details; Electric Arc Furnace (EAF); Construction and Process details: Induction furnace. Stainless steel making.

UNIT - IV

Secondary Steel Making: Secondary steel making processes. Electro Slag Remelting (ESR), Vacuum Arc Remelting (VAR). Brief outline of manufacture of alloy steels. Vacuum treatment of steels. AOD, VOD, Synthetic slag treatments, De-carburization techniques de- gassing of steel Powder injection etc. methods

UNIT - V

Solidification of steels: Ingot defects and remedies; Casting pit side practice: Types of Moulds, Teeming Methods, Killed, Semi Killed, capped and rimmed Steels, Continuous casting of steels.

TEXT BOOKS:

• 1. Steel Making – V. Kudrin
• 2. Modern Steelmaking – Dr. R.H. Tupkary and V. H. Tupkary R16 B.TECH METALLURGY AND MATERIALS ENGG.
• 3. Steel Making – A. K. Chakrabarthi (PHI) 2007

REFERENCES:

• 1. Iron Making & Steel Making Theory and Practice - Ahindra Ghosh & Amit chatterjee
• 2. Secondary Steel Making; Principles and applications – Ahindra Ghosh
• 3. Physical Chemistry of Iron & Steel by Bodsworth. R16 B.TECH METALLURGY AND MATERIALS ENGG.