Fiber Laser Marking Machine

A fiber laser marking machine uses a fiber optic cable as the gain medium and a laser diode as the pump source. This type of laser produces a high-quality, high-speed, and precise beam that can mark various materials with permanent, high-contrast marks. They are known for their efficiency, long lifespan, and minimal maintenance.

Types of Fiber Laser Marking Machine

Desktop Fiber Laser Markers: Compact units suitable for small workshops or labs.

Portable Fiber Laser Markers: Designed for on-site marking, lighter and easier to move.

Integrated Fiber Laser Markers: Systems designed to be integrated into production lines for automated marking.

Galvo Fiber Laser Markers: Utilize galvanometer mirrors for high-speed beam steering, common for most marking applications.

MOPA Fiber Laser Markers: (Master Oscillator Power Amplifier) Offer pulse width adjustability, allowing for more control over marking characteristics like color marking on certain metals or cleaner annealing.

Applications in Various Industries

Manufacturing: Product identification, serial numbers, date codes, barcodes, QR codes on metal and plastic parts (e.g., automotive components, electronics, tools).

Jewelry: Engraving intricate designs, logos, and personalization on precious metals.

Medical Devices: Marking surgical instruments, implants, and other devices with UDI (Unique Device Identification) for traceability.

Electronics: Marking PCBs, integrated circuits, and connectors.

Aerospace: Part identification and traceability on critical components.

Packaging: Marking various packaging materials, although CO2 lasers are often preferred for organic materials.

Technology:

Utilizes an active fiber gain medium doped with rare-earth elements (like Ytterbium). The laser diode pumps the fiber, exciting the dopants to produce photons. The light is then collimated and directed by a galvanometer scanning head for precise marking. Software control allows for complex patterns and data integration.

Material Selection Considerations

• Metals: Excellent for marking all types of metals including stainless steel, aluminum, brass, copper, gold, silver, titanium. The mark is typically an ablation (material removal), annealing (color change), or foaming.
• Plastics: Capable of marking many plastics, including ABS, PVC, polycarbonate, polyethylene, nylon, and more. The result can be engraving, foaming, or color change depending on the plastic and laser parameters.
• Ceramics: Can mark certain ceramic types.
• Coated Materials: Effective for removing coatings to reveal the substrate (e.g., anodized aluminum, painted parts).
• Consideration: The laser's wavelength (typically 1064 nm) and power determine its interaction with different materials. Testing on specific materials is often required to optimize parameters.