Metal Tube Processing Equipment

High Speed Laser Tube Welding Line (Pipe & Tube Mills)

Integrated laser welded tube production system for metal tubular parts in automotive and industrial applications, with up to 15m/min speed and 0.1mm seam accuracy

High Speed Laser Tube Welding Line (Pipe & Tube Mills)
  • High Speed Laser Tube Welding Line (Pipe & Tube Mills)
  • High Speed Laser Tube Welding Line (Pipe & Tube Mills)
  • High Speed Laser Tube Welding Line (Pipe & Tube Mills)
  • High Speed Laser Tube Welding Line (Pipe & Tube Mills)
    • Laser power: 15000–45000 W
    • Welding speed: 8–15 m/min
    • Weldable material strength: > 800 MPa
    • Weldable material thickness: < 4 mm
    • Welding accuracy: < 0.1 mm
    • Material yield: > 96%
    • Tube deformation after welding: ≤ 1.5 mm/m
    • Weld seam strength: No cracking after flaring test, compliant with GB/T 34204-2017

    Process Flow
    Uncoiling & straightening → Shear butt welding → Accumulator storage → Strip leveling → Edge milling → Rough forming → Fine forming → Weld seam tracking → Laser cleaning → Laser preheating → Laser welding → Laser post-heating → Sizing → Eddy current testing → Tube straightening → Laser marking → Length cutting → Automatic stacking → AGV transport → Finished product storage

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    Main Challenges in Laser Welding Equipment
    • Weld quality control
      Weld seams need to be consistent in appearance and strength, and meet strict performance requirements. Common issues such as porosity, cracks, incomplete penetration, burn-through, and welding distortion must be carefully avoided.
    • Equipment complexity
      Laser welding lines combine many systems into one process, including loading, edge milling, tube forming, laser welding, cut-to-length units, online eddy current testing, and robotic unloading. Coordinating mechanical, electrical, optical, and material-related technologies adds a high level of technical difficulty.
    • Control system stability
      To maintain welding efficiency and consistent quality, the system relies on advanced automation and intelligent control to keep the process stable during production.
    • Automation and intelligent control
      Welding parameters need to be adjusted accurately and in real time to match different production conditions. Advanced automation and intelligent control are important to keeping the process efficient and repeatable.
    • Material adaptability
      Welding equipment should be able to handle a wide range of materials, tube diameters, and wall thicknesses, especially when working with ultra-high-strength steels above 800 MPa.
    Overcoming the Key Challenges of Laser Welding Equipment
    • High-precision drive and motion control
      Stable welding speed is achieved through the use of 15 high-precision servo drive units, combined with adaptive control and real-time feedback. This setup allows the system to respond quickly to changes during welding and keep motion smooth and consistent.
    • Machine vision and sensing technology
      Cognex machine vision and sensors keep track of the weld seam while welding is in progress. They help spot defects early and feed the information into our monitoring system, so the welding process stays under control.
    • Integrated development of advanced laser welding technologies
      Improving welding efficiency and quality requires the deep integration of automation and intelligent control. Development focuses on high-speed laser welding (up to 15 m/min) and high-power laser processes (multi-kilowatt range) for high-strength steel tubes. Key efforts include weld seam tracking, high-speed and high-accuracy alignment, defect control, and forming accuracy. Structural simulation of lightweight components and performance evaluation are also part of the development process, supporting the creation of fully automated laser tube welding lines for high-strength steel.
      Real-time welding speed monitoring
      Sensors and feedback systems monitor welding speed during operation and adjust it in real time to keep it within the required range.
      Parameter optimization through testing
      Different welding speeds are tested through several trial runs to find the most suitable speed and acceleration settings. These settings are then refined through repeated adjustments and testing, until the welding process reaches stable and accurate speed control.
    Features
    High laser power

    High laser power
    Laser welding power ranges from 15000W to 45000W, suitable for stable welding of different tube sizes and thicknesses.

    High welding speed

    High welding speed
    Production speeds can reach up to 15 m/min, supporting continuous and efficient tube manufacturing

    High welding accuracy

    High welding accuracy
    Weld seam deviation is controlled within 0.1 mm, helping keep consistent weld quality

    High-strength steel compatibility

    High-strength steel compatibility
    Designed for welding high-strength steel grades above 800 MPa, commonly used in automotive applications

    High material yield

    High material yield
    Material utilization exceeds 96%, helping reduce scrap and improve overall production efficiency
    Metal Tube Processing Equipment

    Weld stability is maintained through a combination of high-precision servo drive control, real-time feedback, and machine vision monitoring. Welding parameters are defined through pre-trials and adjusted dynamically during operation. High-power laser welding, seam tracking, and precise alignment help keep the weld stable even during long periods of high-speed production. High material yield (>96%) and compatibility with high-strength steels above 800 MPa further support consistent weld quality.

    Key points include weld seam quality, equipment accuracy and stability, material adaptability, and the ability to monitor welding quality automatically. Pre-trial testing to define optimal welding parameters is also important to maintain a high material yield (>96%) and ensure stable performance during long-term operation.

    Automation planning should focus on integrating the full process flow, including loading, edge milling, forming, welding, cutting, online eddy current testing, and robotic unloading. High-precision servo drives work together with vision and sensing systems to keep the line stable at high speeds, while allowing weld quality to be monitored in real time and automation to run smoothly.

    Weld consistency can be controlled by selecting production lines equipped with high-precision servo drives and vision-based monitoring. Optimal welding parameters should be defined through pre-trials and adjusted in real time during production. Online eddy current testing further helps detect defects such as porosity or cracks, ensuring stable and consistent weld quality.