Application Fields: Stainless Steel Industrial Welded Pipes

Material: 300 Series, 400 Series, 2205 Duplex Steel, Nickel Alloys

Pipe Diameter: Φ5-114 mm

Wall thickness: 0.4-4.0 mm

Section 1: Advantages of Double Loop Welding Technology

1. Precise thermal input control

Fiber Laser: High energy density, achieving deep penetration welding, with strong penetrative power.

Semiconductor laser: Large spot uniform heating, cleaning, preheating (reduces cold cracking) and slow cooling (reduces residual stress).Splatter suppression.

Dual-loop Synergy: Optimizes thermal cycle through power ratio to prevent corrosion in the stainless steel sensitization zone.

2. Enhanced Weld Quality

Improved molten pool liquidity, with a reduction in porosity greater than 50%.

Heat-affected zone width reduced by 30%, with more even hardness distribution.

No internal splatter, ensuring the inner wall is clean.

Section II: Key Technological Innovation Points

Dual-beam energy coupling

Adjust dual laser power ratio based on melt pool image features (width-to-depth ratio).

2. Gapless welding technology

Semiconductor laser pre-melting filling metal, compensating for the micro-gap at the end face of pipe materials.

3. Weld Seam Formation Intelligent PredictionSelect as required）

Machine learning model (capable of storing over 1000 sets of welding parameters).

Section 3: Economic Profit Analysis

Cost savings

Substitute for TIG welding: Speed increased by 3-5 times.

Good quality rate ≥ 98%, return rate < 0.5%.

Section 4: Production Process

Open Book ➡ Shear Weld ➡ Material Feeder ➡ Steel Strip Cleaning ➡ Trim Importing ➡ Forming ➡ Laser Welding ➡ Weld Tracking ➡ High-Speed Leveling ➡ Weld Grinding ➡ Initial Diameter Setting ➡ Tube Cleaning ➡ Stabilizing Bright Heat Treatment ➡ Diameter Setting ➡ Eddy Current Testing ➡ Coding ➡ Synchronous Cutting ➡ Automatic Down Cutting