Set-up circle welding with non-stop finishing: 🔧 1. Understanding Circular Welding Circular weldi...

Set-up circle welding with non-stop finishing: 🔧 1. Understanding Circular Welding Circular welding (or circumferential welding) is used when two round parts are joined — typically in pipe-to-pipe, pipe-to-flange, or pipe-to-fitting connections. Two main methods: • Manual welding: The welder moves around the pipe or rotates it. • Automatic / mechanized welding: The pipe rotates under a stationary torch or vice versa. ⸻ 🔄 2. Non-Stop (Continuous) Welding A non-stop circular weld means the welding arc is maintained continuously around the full 360° joint without breaking the arc. Key requirements: • Uniform travel speed — ensures even penetration and bead appearance. • Consistent arc length — prevents burn-through or undercut. • Proper positioning — depending on the weld position (1G, 2G, 5G, or 6G). ⸻ 🧭 3. Welding Positions • 1G (Rotated position): The pipe rotates under a stationary torch. Easiest for non-stop welding. • 2G (Fixed horizontal): The pipe is stationary, torch moves around. Trickier for non-stop welds. • 5G (Fixed vertical): Pipe is fixed horizontally; weld progresses around top, sides, and bottom. • 6G (Inclined 45°): Most challenging; used for welder qualification. For true non-stop welding, 1G (rotating) is ideal — the pipe rotates smoothly while the welder maintains a constant torch position. ⸻ ⚙️ 4. Recommended Equipment • Rotator or positioner (for 1G setup). • TIG, MIG, or SAW machine with stable arc. • Automatic torch carriage for consistent travel speed (optional). ⸻ 💡 5. Tips for a Perfect Non-Stop Circular Weld • Ensure perfect alignment and tack welds before starting. • Set start and stop points to overlap slightly (1–2× bead width). • Maintain constant wire feed and voltage. • Purge gas if it’s stainless or alloy pipe (for TIG or MIG). • Monitor heat input to prevent warping