Course detail
Welding Theory and Technology
FSI-HS2 Acad. year: 2024/2025 Winter semester
The course deals with the following topics: Theoretical conditions of the production and existence of a welding joint with respect to welding materials, energetic sources, physical-chemical and metallurgical processes taking place by metallic materials welding. Degradation processes of welding material by thermal deformation cycle. Stress and deformation in welding. Weldability of metallic materials. Weldability of structural carbon steels. Weldability of TMZ high strength steels. Weldability of stainless steels. Weldability of castings. Weldability of Cu, Al, Ti alloys. Weldability of plastics and their destructive and non-dstructive testing of welds.
Supervisor
Department
Learning outcomes of the course unit
Prerequisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
Language of instruction
Czech
Aims
Specification of controlled education, way of implementation and compensation for absences
The study programmes with the given course
Programme N-SLE-P: Foundry Technology, Master's
branch ---: no specialisation, 5 credits, compulsory
Programme C-AKR-P: , Lifelong learning
branch CZS: , 5 credits, elective
Programme N-STG-P: Manufacturing Technology, Master's
branch STG: Manufacturing Technology, 5 credits, compulsory-optional
Type of course unit
Lecture
39 hours, optionally
Teacher / Lecturer
Syllabus
1. Theoretical principles of forming a welding joint, terminology in welding. Physical bases of fusion welding processes. Heat power resources for welding.
2. Extending of heat in a welding joint. Temperature – deformation cycle and temperature calculations. Tension and deformation in welding joints.
3. Macrostructure and microstructure of welding joint and heat effected zone (HAZ). Structure and properties of fusion metal and HAZ.
4. Theory of weldability acc. to european standards.
5. Weldability of metallic materials. Weldability of carbon and carbon – manganese steels.
6. Weldability of microdoped, low and creep resistant steels.
7. Weldability of TMZ and high strength steels.
8. Weldability of high alloy steels (corrosion resistant).
9. Weldability testing, disposition to cracking.
10. Welding of castings (graphitic irons).
11. Welding of aluminium, copper, titanium and their alloys
12. Weldability and welding of plastics.
13. Descructive (DT) and Non-descructive (NDT) testing of welds.
Laboratory exercise
39 hours, compulsory
Teacher / Lecturer
Syllabus
1.Classification of welding methods in ČSN EN and their basic principles.
2.Application of equilibrium diagrams and their applications in welding
3.Construction of a thermal cycle
4.Influence of hydrogen in weldability
5.Calculation of tensions and deformations
6.Weldability of C – Mn and microdopped steels
7.Application of ČSN EN 1011-2 standard
8.Weldability of high alloy steels
9.Defects in welding joints
10.Power welding sources
11.Calculations in welding of electron beam and laser
12.Powered properties of covered electrodes
13.Credit