faq`s
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Why does my weld have a poor appearance with rough or uneven surface finish?
Causes:
- Inadequate shielding gas
- Contamination or oil on weld surface or filler wire
Corrections:
- Check gas purity and flow rate, adjust torch angle
- Clean base metal and filler wire, maintain gas system regularly
What causes an unstable or erratic welding arc during the welding process?
Causes:
- Loose cable connections
- Surface contamination
- Excessive airflow
Corrections:
- Ensure all cable connections are secure
- Clean welding area thoroughly
- Use windshields to prevent airflow disturbance
Why am I experiencing lack of penetration or poor fusion in my welds?
Causes:
- Improper welding parameters
- Contaminated or oily base material
- Oxidized wire
Corrections:
- Adjust current, voltage, and speed to ensure adequate heat input
- Clean base material and filler wire
- Use fresh wire and optimize torch angle
What causes porosity (gas holes) to appear in my finished welds?
Causes:
- Moisture or contamination on base metal or wire
- Improper wire storage causing moisture absorption
Corrections:
- Remove contaminants and moisture from weld area
- Store wire in dry conditions; bake moist wire if necessary
Why do cracks develop in my welds either during or after welding?
Causes:
- Poor filler base metal compatibility
- Rapid cooling in HAZ (Heat Affected Zone)
- Alloy segregation or residual stress
Corrections:
- Use compatible filler material
- Control heat input and cooling rate
- Use proper welding sequence and multipass technique
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