1. Continuous Wave (CW) Welding
Definition
In continuous wave welding, the laser emits a constant, uninterrupted beam of energy. This provides a steady heat source that enables deep penetration and strong welds.
Key Features
Stable energy delivery
Suitable for deep, long, or high-speed welds
Lower thermal cycling, reducing internal stress
Often used in automation and robotic welding systems
Typical Applications
Thick metal sheets
Automotive components
Battery pack welding
Long straight seams or continuous joints
High-volume, high-speed production lines
Benefits
High efficiency and welding speed
Clean, uniform weld seams
Excellent for materials like stainless steel, carbon steel, and aluminum
2. Pulsed Laser Welding
Definition
In pulsed welding, the laser emits energy in short, controlled bursts (pulses) rather than a continuous beam. The energy and duration of each pulse can be precisely controlled.
Key Features
Precise energy input with low heat impact
Ideal for thin, heat-sensitive materials
Reduces risk of warping, burn-through, or microcracks
Useful for intricate or small welds
Typical Applications
Electronic components
Medical devices
Watch and jewelry welding
Micro-welding and spot welding
Materials with low melting points or high thermal sensitivity
Benefits
Minimal heat-affected zone
Improved appearance of micro-welds
Greater control over heat input
3. Can One Machine Support Both Modes?
Yes, many modern laser welding machines - especially fiber laser systems - support both continuous and pulsed welding modes. Users can switch between them via software or control settings, depending on the application. This dual-mode functionality adds flexibility and broadens the range of materials and use cases.
Conclusion
Laser welding machines can support both continuous wave and pulsed welding modes. Continuous welding is ideal for large-scale, deep, or fast welding tasks, while pulsed welding excels in precision work on delicate or small components. Choosing the right mode depends on the material type, part thickness, heat sensitivity, and required welding quality. Machines with both capabilities provide the most versatility for diverse industrial needs.
-- Rayther Laser Lyra Zhang
https://www.raytherlasercutter.com/laser-welding-machine/laser-welder-welding-machine.html