• Rail Vehicles, Semester 1, position 5
• Zavarivanje i zavarene konstrukcije, Semester 1, position 5
• Transportno inženjerstvo, konstrukcije i logistika, Semester 1, position 5

The aim of this course is for students to become competent in the area of welding. This course is designed to provide information through theoretical lectures, computational classes and seminar papers, but also through welding workshop practice. They should also develop appropriate academic skills needed for the profession and become informed with the specificity of each welding process and appropriate equipment.

Upon the successful completion of the course, the students are able to: - Detail the differences between welding processes according to their characteristics - Detail the rang of application, appropriate joint preparations and potential problems to be overcome - Understand fully the fundamental physics of an electric arc, including the main parameters influencing arc stability - Explain fully the principles of welding processes including transfer modes and their applications - Explain the purpose and working principle of each component of the equipment - Identify the influence of welding parameters on weld quality - Choose appropriate welding process, power source, parameters and filler material for particular applications and materials - Predict potential hazards and define methods for safe handling of welding equipment

Introduction. Classification of welding processes. Basic terms in welding. Gas welding. Characteristics of fuel gases. Basics of electricity and electronics. Magnetism in welding. Theory of electric arc. Welding power sources characteristics. Manual metal arc welding. Introduction to gas shielded arc welding. Gas metal arc welding (MIG/MAG). High efficiency MIG/MAG processes. Flux cored arc welding. Gas tungsten arc welding (TIG). Special techniques of TIG (spot welding, key-hole, hot-wire, orbital welding). Submerged arc welding. Resistance welding processes. Special welding processes (laser, electron beam, plasma). Survey of other welding processes:electro-slag, friction, friction stir, ultrasonic, explosive, diffusion, aluminothermic, cold-pressure, magnetic pulse, high-frequency welding. Cutting processes. Mechanical cutting. Gas cutting. Other cutting processes:arc-air, carbon and metal-arc, oxy-arc, plasma, electron beam, laser cutting, water jet. Surfacing. Spraying.Brazing and soldering. Bonding.

Symbolic representation of joints. Classification and designation of MMA electrodes. Calculation of consumption of electrodes for manual metal arc welding. Estimation of parameters for MIG/MAG process. Practice in the welding workshop. Equipment for arc welding processes. Equipment for resistance welding, gas welding and cutting. Fully mechanised welding processes. Robotics. Risks, hazards and methods of safe handling and working. Project papers in the field of contemporary trends and special procedures of welding, soldering and bonding. Workshop.

Attended course lectures and finished exercises of Engineering materials 1 and Engineering materials 2.

1. O.Popović, R.Prokić Cvetković, Welding processes, Faculty of Mechanical Engineering, Belgrade, 2016., ISBN 978-86-7083-909-0 2. Lectures

Total assigned hours: 75

New material: 30
Elaboration and examples (recapitulation): 0

Auditory exercises: 0
Laboratory exercises: 15
Calculation tasks: 0
Seminar paper: 15
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 1
Review and grading of seminar papers: 3
Review and grading of the project: 0
Test: 2
Test: 4
Final exam: 5

Activity during lectures: 5
Test/test: 45
Laboratory practice: 10
Calculation tasks: 0
Seminar paper: 10
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 35

W. Galvery, F.Marlow, Welding Essentials: Questions and answers, Industrial Press, Inc., New York, 2007, ISBN 978-0-8311-3301-6 ; W. Galvery, F.Marlow, Welding Essentials: Questions and answers, Industrial Press, Inc., New York, 2007, ISBN 978-0-8311-3301-6