Question
Download Solution PDFWhen some metal drops are expelled from the weld and remain stuck to the surface, then this defect is known as-
This question was previously asked in
NPCIL SA/ST ME GJ held on 07/11/2019 Shift-1
Answer (Detailed Solution Below)
Option 3 : Spatter
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NPCIL Scientific Assistant Quantum Mechanics Test
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Detailed Solution
Download Solution PDFExplanation:
- Welding spatter is a welding defect.
- During welding operation due to the force of arc, some of the molten metal particles are jumping from the weld pool, and falling into other areas of the plate is called spatter.
- Spatters: An unintentional deposit of weld metal, in the shape of small globules on the job surface along the weld is known as spatters.
Cause:
- A too high current setting
- Use of moisture affected electrode
- Wrong polarity
- Use of a long arc
- Arc-blows
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