Lectures:
1. Theory of welded joint creation during fusion welding and solid-state welding. Energy sources used for welding. Weld thermal cycles. Measurement of thermal cycles, calculation of thermal cycles.
2. Theory of heat-affected zone of welded joints. Effect of thermal cycle on HAZ. Precipitation and degradation processes in HAZ.
3. Solidification of the weld metal. Segregation and liquation. External shape factor of weld. Structure and properties of weld metal.
4. Metallurgical processes in weld metal. Theory of slag. Alloying of weld metal.
5. Desulfurization and dephosphorization of the weld metal. Absorption of oxygen in weld metal, desoxidation. Absorption of hydrogen in weld metal. Absorption of nitrogen in weld metal.
6. Cracks in welded joints. Causes of occurrence, susceptibility criteria, cracking tests. Cold cracking, hot cracking, lamellar, annealing , underclad and corrosion cracking.
7. The theory of stress and deformation in welded joints. Calculations. Temporary and residual stresses. Methods of reducing of stress and deformation in welded joints.
8. The theory of soldering. Defects of solder joints. Properties of solder joints. Solderability tests. Solders and fluxes.
9. Welding of heterogeneous joints. Effect of chemical composition and welding methods. Using Schaffler diagram. Problems in welding of heterogeneous joints.
10. Weldability of heat resistant steels
11. Weldability of stainless steels. Weldability of cast irons and cast steels.
12. Weldability of copper and its alloys. Weldability of aluminum and its alloys.
13. Weldability of titanium and its alloys. Weldability of nickel and its alloys.
14. Welding of plastics.
1. Theory of welded joint creation during fusion welding and solid-state welding. Energy sources used for welding. Weld thermal cycles. Measurement of thermal cycles, calculation of thermal cycles.
2. Theory of heat-affected zone of welded joints. Effect of thermal cycle on HAZ. Precipitation and degradation processes in HAZ.
3. Solidification of the weld metal. Segregation and liquation. External shape factor of weld. Structure and properties of weld metal.
4. Metallurgical processes in weld metal. Theory of slag. Alloying of weld metal.
5. Desulfurization and dephosphorization of the weld metal. Absorption of oxygen in weld metal, desoxidation. Absorption of hydrogen in weld metal. Absorption of nitrogen in weld metal.
6. Cracks in welded joints. Causes of occurrence, susceptibility criteria, cracking tests. Cold cracking, hot cracking, lamellar, annealing , underclad and corrosion cracking.
7. The theory of stress and deformation in welded joints. Calculations. Temporary and residual stresses. Methods of reducing of stress and deformation in welded joints.
8. The theory of soldering. Defects of solder joints. Properties of solder joints. Solderability tests. Solders and fluxes.
9. Welding of heterogeneous joints. Effect of chemical composition and welding methods. Using Schaffler diagram. Problems in welding of heterogeneous joints.
10. Weldability of heat resistant steels
11. Weldability of stainless steels. Weldability of cast irons and cast steels.
12. Weldability of copper and its alloys. Weldability of aluminum and its alloys.
13. Weldability of titanium and its alloys. Weldability of nickel and its alloys.
14. Welding of plastics.