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BLANTERWISDOM101

DEFECTS WELDING BY VISUAL PART 1

4/22/2018


Defects which may be detected by visual inspection
can be grouped under the following headings :

  • Cracks
  • Solid inclusions
  • Surface and profiles
  • Misalignment (set-up irregularities)
  • Gas pores and porosity
  • Lack of fusion
  • Mechanical damage
  • Parent material damage
  • Miscellaneous  


 1. Crarks
Cracks that may occur in welded materials are caused generally by many factors and may be classified by shape and position, cracks are classed as planar. 

 


 
Classified by Shape                                 Classified by Position
- Longitudinal                                           - HAZ
- Transverse                                             - Centreline
- Branched                                               - Crater                 
- Chevron                                                - Fusion zone
                                                              - Parent metal










*Materi by TWI Ltd
Continue Part 2


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