24-07-2014, 12:14 PM
DEFECTS IN WELDING
DEFECTS IN WELDING.ppt (Size: 692.5 KB / Downloads: 35)
Introduction-
*The important of defect in welding which can be assumed to occurs in normal fabrication
Causes of distortion
More number of metal with small diameter electrode
Slow arc travel speed
More number of joint
Improper Welding sequence
3)Inclusion
Causes of inclusion
Long arc
Too large &low arc current
Too large electrode diameter
Wrong placed tack weld
Too small included angle of the joint
Conclusion
As welding defect can be affected on weld performance
Early detection and correction is important to ensure their design purpose