Courses » Steel Quality : Role of Secondary Refining & Continuous Casting

Steel Quality : Role of Secondary Refining & Continuous Casting

About the course

Quality of steel plays an important role in imparting the specific application requirements to the product. Cleanliness as well as absence of defects are two broad facets of the quality of a steel product. Aim of this course is to give a brief introduction to the importance of secondary refining and continuous casting in achieving the desirable cleanliness and surface quality of cast and hot rolled steels

Intended Audience

Undergraduate, post graduate and graduate students of Metallurgical and Materials

Core / Elective : Elective

UG/PG : Both

Degree Applies : B.E/B.Tech,M.E/M.Tech,



Industry support

All steel producers and users will be interested in this course

Course Instructor

Dr. Santanu Kumar Ray has been the Steel Chair Professor in the department of Metallurgical and Materials Engineering of IIT Madras since March 2016. He did his B.Tech ( Hons ), M.Tech and Ph.D , all from IIT Kharagpur . He spent 35 years at the R & D Centre of SAIL . For a brief period of 6 months he was the Principal of Seacom Engineering College in Kolkata. His areas of interests are commercial implementation of new developments in secondary refining and continuous casting of special and alloy steels.
Course Layout

Week 1 : Brief introduction to the concept of steel quality with respect to application requirements

Week 2 : Origin of micro and macro non metallic inclusions , their number and size distribution.

Week 3 : Brief overview of the secondary refining processes to control the residuals in steel

Week 4 : Importance of measures required in ladle,tundish and mould to control reoxidation

Week 5 : Brief introduction to the roles of microsegregation and steel chemistry in causing
different types of surface , subsurface and internal defects in continuously cast steel.

Week 6: How defects in cast steel are responsible for creating quality problems during rolling .

Week 7 : Brief introduction to the methodology of identifying the genesis of surface defects

Week 8 : lecture 8

Suggested Reading

A.Ghosh , Secondary Steelmaking -- Principles & Applications , CRC Press , Florida ,
USA , 2001 M.M.Wolf , Continuous Casting , Vol.9 , Warrendale , PA, Iron & Steel Society, 1997

Certification Exam
  • The exam is optional for a fee. Exams will be on 22 Oct, 2017
  • Time: Shift 1: 9am-12 noon; Shift 2: 2pm-5pm
  • Any one shift can be chosen to write the exam for a course.
  • Registration url: Announcements will be made when the registration form is open for registrations.
  • The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.

  • Final score will be calculated as : 25% assignment score + 75% final exam score
  • 25% assignment score is calculated as 25% of average of best 6 out of 8 assignments
  • E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup. It will have the logos of NPTEL and IIT Madras.It will be e-verifiable at nptel.ac.in/noc.