Spatters

DEFECT WELD
(VISUAL)

SPATTERS

Defect Weld : Spatters

Because :

1. Environmental wet or moist.
2. Elektoda moist.
3. The wind getting into the area welds.
4. The arc welding too long .
5. Capping current too high.
6. Kind of a current wrong.
7. Kinds of polarity wrong.
8. The galvaniize not yet been grinding.

Result :

1. Bad Profile
2. Started rust the surface

               

Countermeasures :
1 . Use chisel only or niggardly churlish .Do not use grindstone because it is going to take the base metal

Rejection criteria : If not cleared can cause rejection (Because it is not relevant with standard)

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Category Defect Welds

Defect welds : 

Defect Weld on Pipe.

1 Visual :

• Spatters
• Surface Porosity
• Pin Hole
• Surface Cracks
• Surface Cold lap
• Surface Concavity
• Surface Undercut
• Surface Underfill
• Excessive Reinforcement
• Wide Bead
• Stop Start
• High Low

2. Non Visual :

• Root Porosity
• Root Concavity
• Root Cracks
• Blow Hole
• Incomplete Penetration
• Excessive Penetration
• Excess Wire
• Root Undercut
• Root Underfill

3. Internal :

• Slag Inclusion
• Slag Lines
• Internal Porosity
• Worm Holes
• Internal Cold Lap
• Incomplete Fusion
• Internal Crack
• Hollow Bead
• Aligned Porosity
• Heavy Metal Inclusion

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DEFECT WELDS

DEFECT WELDS

A defect of the welds is a circumstance where the results of welding there is a decrease in the quality of the results of the welds .The quality of the outcome of the welds was defined as in the form of a decline in the the power compared with the strength of material basemetal the base , not good news the performance of an outcome las or may be too high in the form of the power of the results of the welds so it does not appropriate for the demands the power of a construction .

The defect welds this will result in many things that are not unwanted and leads to a decline in the level of occupational safety, good safety instrument, workers, environment and companies. In addition also economically will result in an upsurge in production costs and will result in a loss.According to american socety the mechanical of engineers ( asme ), cause defect welds can be split into several factors among other :

• The less support at work location
• Human Error
• Technique Welding 
• Material

Defect welds consisting of 3 way check

1. Visual

2. Non Visual

3. Internal

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