Unit 1 Introduction to Heat Treatment Processes

3 lecture hours

• 1.1 Importance of heat treatment 1.2 Steps involved in heat treatment 1.3 Classification of heat treatment processes

Unit 2 Phase Transformations

10 lecture hours

• 2.1 Limitations of Fe-Fe3C diagram 2.2 Construction of Time Temperature Transformation diagram 2.3 T.T.T. diagram of hypo eutectoid steel
• eutectoid steel
• hyper eutectoid steel 2.4 Bainitic transformation
• Martensitic transformation 2.5 Factors affecting T.T.T. diagram and its limitations 2.6 Applications of T.T.T. diagram 2.7 Effect of alloying elements on T.T.T. diagram 2.8 C.C.T. diagram

Unit 3 Annealing & Normalizing

10 lecture hours

• 3.1 Principle and objectives of annealing 3.2 Various annealing processes used for steels 3.3 Principle and objectives of normalizing 3.4 Difference between annealing and normalizing

Unit 4 Hardening & Tempering

10 lecture hours

• 4.1 Principle and objectives of Hardening Process 4.2 Heat removal Mechanism during Quenching 4.3 Characteristics of quenchants and quenching media 4.4 Hardenability and Jominy End Quench Test 4.5 Need of Tempering process 4.6 Three stage Tempering process 4.7 Precipitation Hardening

Unit 5 Surface Hardening Processes

9 lecture hours

• 5.1 Need of Surface hardening processes 5.2 Carburizing Process 5.3 Nitriding Process 5.4 Cyaniding Process 5.5 Induction Hardening Process 5.6 Flame hardening Process

Unit 6 Quality Control in Heat Treatment 03 10

• Program Name: Diploma Engineering Level: Diploma Branch: Metallurgy Engineering Subject Code : DI04021021 Subject Name: Heat Treatment 6.1 Common defects in heat-treated products 6.2 Factors affecting quality 6.3 Remedies and preventive measures