Unit 1 Advance welding processes

8 lecture hours

• 1.1 Pulsed GTAW 1.2 High Frequency pulsed GTAW 1.3 Square wave AC GTAW 1.4 Active TIG welding 1.5 Hot wire TIG welding 1.6 Electro Slag Strip Cladding (ESSC) 1.7 Submerged Arc Strip Cladding (SASC) 1.8 Advances in gas metal arc welding - Pulsed GMAW 1.9 Advances in gas metal arc welding - Controlled dip short circuiting processes

Unit 2 Solid state welding processes

10 lecture hours

• 2.1 Cold pressure welding 2.1.1 Definition 2.1.2 Mechanism 2.1.3 Material welded 2.1.4 Base metal surface cleaning 2.1.5 Joint design 2.1.6 Equipment 2.1.7 Application 2.2 Diffusion (bonding) welding 2.2.1 Definition and concept 2.2.2 Methods 2.2.3 Parameters 2.2.4 Materials welded Program Name: Diploma Engineering Level: Diploma Branch: Fabrication Technology Subject Code: DI04055081 Subject Name: Advance Welding Engineering 2.2.5 Advantages 2.2.6 Limitation 2.2.7 Application 2.3 Ultrasonic welding 2.3.1 Definition and concept 2.3.2 Principle of operation 2.3.3 Metallurgy of ultrasonic welds 2.3.4 Equipment 2.3.5 Variables 2.3.6 Types 2.3.7 Materials welded 2.3.8 Advantages 2.3.9 Limitation 2.3.10 Application 2.4 Explosive welding 2.4.1 Definition 2.4.2 Mechanism 2.4.3 Arrangement of explosive welding 2.4.4 Explosive used 2.4.5 Metallurgy of explosive welds 2.4.6 Testing of explosive welds 2.5 Friction welding 2.5.1 Definition 2.5.2 Steps in friction welding 2.5.3 Variables 2.5.4 Materials welded 2.5.5 Joint preparation 2.5.6 Advantages 2.5.7 Disadvantages 2.5.8 Application

Unit 3 Miscellaneous Advance welding processes

• 3.1 Thermit welding 8 18 Program Name: Diploma Engineering Level: Diploma Branch: Fabrication Technology Subject Code: DI04055081 Subject Name: Advance Welding Engineering 3.1.1 Definition 3.1.2 Principle operation 3.1.3 Thermit welding mixtures 3.1.4 Procedure of thermit welding 3.1.5 Advantages
• limitation & application 3.2 Atomic Hydrogen Welding 3.2.1 definition 3.2.2 Principle 3.2.3 Operation 3.2.4 Equipment 3.2.5 Advantages 3.2.6 Limitation 3.2.7 Application 3.3 Under water welding 3.3.1 Types 3.3.2 Characteristics of good under water welding 3.3.3 SMAW underwater welding 3.3.4 TIG under water welding 3.3.5 MIG Under water welding 3.3.6 Application of underwater welding 3.4 Narrow Gap Welding Techniques 3.4.1 Principles and features of narrow gap welding 3.4.2 Narrow gap welding processes 3.4.2.1 Narrow gap GTAW 3.4.2.2 Narrow gap GMAW 3.4.2.3 Narrow gap SAW

Unit 4 Radiant Energy welding processes

7 lecture hours

• 4.1 Electron Beam Welding 4.1.1 Introduction 4.1.2 Definition 4.1.3 Principle of operation 4.1.4 Welding atmosphere Program Name: Diploma Engineering Level: Diploma Branch: Fabrication Technology Subject Code: DI04055081 Subject Name: Advance Welding Engineering 4.1.5 Comparison of vacuum and atmospheric welding systems 4.1.6 Equipment 4.1.7 Variables 4.1.8 Safety 4.1.9 Advantages 4.1.10 Limitation 4.1.11 Application 4.2 Laser Beam Welding 4.2.1 Definition 4.2.2 Principle of operation 4.2.3 Forms of laser 4.2.4 Joint design 4.2.5 Advantages 4.2.6 Limitation 4.2.7 Application

Unit 5 Weldability testing

12 lecture hours

• 5.1 weldability test 5.1.1 Theoretical test 5.1.2 Simulated test 5.1.3 Visual examination 5.1.4 Component sampling test 5.1.5 Actual welding test 5.2 Fabrication weldability test 5.2.1 Hot cracking test 5.2.1.1 Murex test 5.2.1.2 Houldcroft test 5.2.1.3 Varestraint test 5.2.1.4 Ring weldability test 5.2.1.5 Hot ductility test 5.3 Cold cracking test 5.3.1 Controlled thermal severity test 5.3.2 Tekken test 5.3.3 Lehigh restraint test 5.3.4 Longitudinal bead weld test Program Name: Diploma Engineering Level: Diploma Branch: Fabrication Technology Subject Code: DI04055081 Subject Name: Advance Welding Engineering 5.3.5 Implant test 5.4 Weldability test related to specific types of cracking 5.4.1 Lamellar tearing 5.4.2 Reheat cracking 5.5 Service weldability test 5.5.1 Tensile test 5.5.2 Nick break test 5.5.3 Pillow test 5.5.4 Bend test 5.5.5 Impact test 5.5.6 Hardness test 5.5.7 Fracture toughness test 5.5.8 Fatigue test 5.5.9 Corrosion test 5.5.10 Creep test