Welding Certificate

Professional Welding Training

Welding Theoretical Part

• Introduction to Welding Technology
• Arc welding. Shielded Metal – Arc Welding – SMAW (MMA – Stick Welding)
• Variables of SMAW. Welding process. Properties of electric arc
• Temperature field. Heat transfer. Thermal cycle
• Residual stresses. Distortions
• Partially melted zone. Iron – carbon phase diagram
• Cooling rate. Solidification of weld metal
• Phase transformations. Final welding microstructure
• Heat affected zone
• Mechanical properties of weld metal. Stress-strain curve
• Classification designations of covered electrodes
• Discontinuities – weld defects
• Weld inspection and testing. Non-Destructive Evaluation
• The duration of the theoretical part will cover 15% to 20% of the total program.

Welding Practical Part

• The shielded Metal Arc Welding Process
• Safety guidelines for welding training. Safety rules
• Hand tools and power tools used in welding
• Welding machines
• Welding positions
• Cutting out parts – edge and surface butt weld preparation, joint geometry
• Fit-up and assembly of the parts. Workmanship standards for welding
• Preparation and welding on carbon steel plates in PF (3G uphill) position
• Preparation and welding on carbon steel pipes in H-L045 (6G uphill) position

Certification Process

• Welding of test specimens following WPS (preliminary welding procedure specification prepared in accordance with ISO 15614)
• Application of quality level of imperfections B in fusion-welded joints (Quality level B corresponds to the highest requirement on the finished weld in accordance with ISO 5817)
• Certification by TUV Cyprus – PF position – thickness of plate 10 mm (butt weld – full penetration)
• Certification by TUV Cyprus – H-L045 position – pipe diameter 168 mm, thickness 8 mm (butt weld – full penetration)
• Test of job knowledge in accordance with ISO 9606 (includes questions on the matters related to the welding process used in qualification test of welders)