Vertical welding requires reduced heat input (15-20% less current than flat position) and enhanced gas coverage to control the molten pool against gravity. Success depends on using short-circuit transfer, proper manipulation technique, and CORGON® 10 for optimal arc stability during vertical progression.
Vertical Position Welding: Gas Coverage and Heat Control
Vertical Welding Setup and Technique
- Heat Input Reduction. Reduce current 15-20% from flat position settings. Use short-circuit transfer exclusively - spray transfer impossible in vertical.
- Gas Flow Adjustment. Increase flow rate 10-15% to compensate for gravity effects on gas envelope. Use 20-25 L/min vs 18-20 L/min flat.
- Progression Direction. Vertical-up for structural work (better penetration), vertical-down for thin materials (faster travel, less heat input).
- Manipulation Technique. Use slight weaving or step-pause technique. Pause at sides for sidewall fusion, move quickly through center.
Position Stable
CORGON® 10 (Ar + 10% CO2)
Positional GradeWhy CORGON® 10 excels in vertical: Lower CO2 content provides smoother arc with better control characteristics essential for positional welding. Reduced spatter and improved arc stability help maintain consistent molten pool control.
Vertical welding with CORGON® 10: Flow rate 20-25 L/min, voltage 18-21V, travel speed 120-200mm/min. Ideal for structural vertical welding where quality and penetration are critical.