Quality Assurance in Welding: Module 4

Objective:

  Know how to work to a WPS, knowing the use of welding parameters.
  Have basic knowledge about the harmonised system of International
  Standards.

Scope:

• Welding Procedure Specifications (ISO 156091).
• Welding parameters, welding positions (ISO 6947).
• Types of welds and joints: characteristics, size, surface finish.
• Welding symbols according to ISO 2553.
• Qualification of WPSs.
• Essential variables; range of qualification; validity; test pieces and assessment of the welder.
• Role and operation of CEN and ISO; relationship with National Standards Organisations.
• Product Standards which contain welding requirements.
• Standards for Quality and Coordination in welding.

Expected results:

• Read welding details on a drawing and interpret welding symbols (ISO 2553).
• Identify the welding positions per ISO 6947.
• Identify the types of welded joints: "T", lap, corner, etc.
• Identify in the fillet weld: size, shape, tack weld, and excess weld metal.
• Identify the use of a WPS in the production.
• Describe how to get the required parameters.
• Name the most important International and national standards for welding.

List of Contents

1. Routes to welding procedure approval
2. Welding operator approval
3. Welding symbols according ISO 22553
4. Types of butt welds
5. Types of fillet welds