1. Introduction, theory of welding; basic concepts; the formation of the welded joint and its principal parts; deformation and internal stresses during welding process.
2. Weldability of metallic materials and its evaluation; weldability of steels, influence of individual elements on steel weldability.
3. Weldability evaluation – resistance to hot cracking, resistance to cold cracking, (incl. hydrogen embrittlement), resistance to lamellar tearing, resistance to annealing cracks.
4. Preheating, controlled cooling, post weld heat treatment - determination of preheating temperature, used methods, interpass temperature; controlled cooling; stress relief annealing, tempering after welding.
5. Types and methods of welding, fusion welding, pressure welding, friction welding, classification of methods, principal characteristics.
6. Arc welding: Electric arc, manual arc welding with coated electrode; principle, basic electrode characteristics, advantages and disadvantages of the process.
7. Arc welding: Submerged arc welding (APT), principle, additional materials for the APT method - wires and fluxes.
8. Methods of arc welding in a protective atmosphere: Gas metal arc welding (GMAW: MIG / MAG); Gas tungsten arc welding (TIG, WIG, GTAW); protective gases for individual methods, additional materials.
9. Defects of welded joints, their definition and admissibility assessment; Types of defects in the welded joints - cracks, cavities, non-metallic inclusions, cold joints / lack of fusion, defects in shape and dimensions; methods of defect evaluation in the welded joints.
10. Testing of welded joints: specific tests of welded joints - cross tensile tests (ČSN EN ISO 4136), longitudinal tensile tests of the weld metal (ČSN EN ISO 4178), bend tests (ČSN EN ISO 5173), impact tests (ČSN EN ISO 9016), fracture test (ČSN EN ISO 9017), tests of hardness (ČSN EN ISO 9015-1) and microhardness (ČSN EN ISO 9015-2)
11. Welding of materials for power industry - combination of steel grades, selection of welding consumables, influence of welding cycle on creep resistance of weld joints, strength factor of welded joint (SRF).
12. Structural analysis of welded joints - macrostructure, microstructure, or submicroscopic characteristics of welded joints; characterization of welded joints with respect to possible degradation sites, especially for creep degradation and corrosion, cracking of I-IV type in welded joints.
2. Weldability of metallic materials and its evaluation; weldability of steels, influence of individual elements on steel weldability.
3. Weldability evaluation – resistance to hot cracking, resistance to cold cracking, (incl. hydrogen embrittlement), resistance to lamellar tearing, resistance to annealing cracks.
4. Preheating, controlled cooling, post weld heat treatment - determination of preheating temperature, used methods, interpass temperature; controlled cooling; stress relief annealing, tempering after welding.
5. Types and methods of welding, fusion welding, pressure welding, friction welding, classification of methods, principal characteristics.
6. Arc welding: Electric arc, manual arc welding with coated electrode; principle, basic electrode characteristics, advantages and disadvantages of the process.
7. Arc welding: Submerged arc welding (APT), principle, additional materials for the APT method - wires and fluxes.
8. Methods of arc welding in a protective atmosphere: Gas metal arc welding (GMAW: MIG / MAG); Gas tungsten arc welding (TIG, WIG, GTAW); protective gases for individual methods, additional materials.
9. Defects of welded joints, their definition and admissibility assessment; Types of defects in the welded joints - cracks, cavities, non-metallic inclusions, cold joints / lack of fusion, defects in shape and dimensions; methods of defect evaluation in the welded joints.
10. Testing of welded joints: specific tests of welded joints - cross tensile tests (ČSN EN ISO 4136), longitudinal tensile tests of the weld metal (ČSN EN ISO 4178), bend tests (ČSN EN ISO 5173), impact tests (ČSN EN ISO 9016), fracture test (ČSN EN ISO 9017), tests of hardness (ČSN EN ISO 9015-1) and microhardness (ČSN EN ISO 9015-2)
11. Welding of materials for power industry - combination of steel grades, selection of welding consumables, influence of welding cycle on creep resistance of weld joints, strength factor of welded joint (SRF).
12. Structural analysis of welded joints - macrostructure, microstructure, or submicroscopic characteristics of welded joints; characterization of welded joints with respect to possible degradation sites, especially for creep degradation and corrosion, cracking of I-IV type in welded joints.