Application Fields: Stainless Steel Industrial Welded Pipes

Material: 300 series, 400 series, 2205 duplex steel, nickel-based alloy

Pipe Diameter: Φ5-114 mm

Wall Thickness: 0.4-4.0 mm

Section 1: Advantages of Double-Spiral Welding Technology

1. Precise heat input control

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

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

Dual-loop Coordinated: Optimize thermal cycles through power ratio to prevent sensitization zone corrosion of stainless steel.

2. Improved Weld Quality

Pooled liquidity enhanced, porosity reduced by >50%.

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

No internal splatter, ensuring the inner wall remains clean.

Section II: Key Technological Innovation Points

Dual-beam energy coupling

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

2. Seamless 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 Optional）

Machine Learning Model (capable of storing over 1000 sets of welding parameters).

III. Economic Profit Analysis

Cost savings

Substitute TIG Welding: Speed increased 3-5 times.

Product pass rate ≥ 98%, return rate < 0.5%.

4. Production Process

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