Welding Theory and Technology (FSI-HS2)

Academic year 2024/2025
Supervisor: Ing. Marian Sigmund, Ph.D., IWE  
Supervising institute: ÚST all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
 
Learning outcomes and competences:
 
Prerequisites:
 
Course contents:

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.
Teaching methods and criteria:
 
Assesment methods and criteria linked to learning outcomes:
 
Controlled participation in lessons:
 
Type of course unit:
    Lecture  13 × 3 hrs. optionally                  
    Laboratory exercise  13 × 3 hrs. compulsory                  
Course curriculum:
    Lecture

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 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
Literature - fundamental:
1. AMBROŽ, Oldřich. Technologie svařování a zařízení: učební texty pro kurzy svářečských inženýrů a technologů. Ostrava: ZEROSS, 2001. ISBN 80-85771-81-0
2. BARTÁK, Jiří. Výroba a aplikované inženýrství ve svařování: učební texty pro kurzy svářečských inženýrů a technologů. Ostrava: ZEROSS, 2000. ISBN 80-85771-72-1.
3. FOLDYNA, Václav. Materiály a jejich svařitelnost: učební texty pro kurzy svářečských inženýrů a technologů. 2., upr. vyd. Ostrava: ZEROSS, 2001. ISBN 80-85771-85-3.
4. MAJER, Lubomír. Navrhování a posuzování svařovaných konstrukcí a tlakových zařízení: učební texty pro kurzy svářečských inženýrů a technologů. Ostrava: ZEROSS, 1999. ISBN 80-85771-70-5.
Literature - recommended:
1. Žák,J. Novák,M.: Teorie svařování, , 0
2. Hrivňák,Ivan: Teoria zvárania ko.mat., , 0
3. Séférian,D.: Nauka o kov.ve sv.oceli, , 0
4. ASM Handbook. Welding,Brazing and Soldering. Vol. 6. USA: ASM,2003. 1298 s. ISBN 0-87170-382-3
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
N-SLE-P full-time study --- no specialisation -- Cr,Ex 5 Compulsory 2 1 W
N-STG-P full-time study STG Manufacturing Technology -- Cr,Ex 5 Compulsory-optional 2 1 W