Fibre lasers are the latest development in laser cutting. The laser beam made by an active fibre, transmitted via a transport fibre to the machine’s cutting head. Fibre lasers are relatively smaller than CO2 lasers, but can generate more power from the same current. Fibre laser cutter design is for the processing (cutting, marking or engraving) medium-thick sheet metal, 0.8 to 30mm. Basically, steel, stainless steel, and aluminium can be cut by fibre laser cutting systems. Laser cutting is also very versatile, not only does it process flat materials; it can also be used to process tubes and profiles, and cut non-ferrous metals like copper and brass.
How it works
Fibre laser cutting machines work by focusing a high-power laser on the surface of the material being cut. The laser beam energy absorbs into the material’s surface and converted into heat, which vaporizes or melts the material. Gas is also focused onto the cutting surface to expel away the vapour and molten metal from the cutting path.
Fibre laser cutters benefits include:
Reduced energy bills due to greater efficiency – The laser cutters have active regions several km long, which give a high optical gain. Plus, they can support KW levels of high output power due to the fibre’s high surface area to volume ratio, which enables efficient cooling.
Compact size – Fibre lasers are more compact compared to gas or rod lasers of comparable power, the fibre can bend or coil to save space.
Faster processing times – Better beam quality and extra power offer faster cutting speeds and cleaner cut edges.
Higher productivity – Light is already incorporated into a flexible fibre for easy delivery to a movable focusing piece. This boosts productivity for welding, laser cutting, and folding of polymers and metals.
Lower operational costs or cost of ownership offers a greater return on investments – Fibre laser cutting machines cut costs incurred in cutting gas and labour due to faster cutting speeds.
Greater reliability and minimal maintenance – Fibre lasers show high vibration stability and temperature, maintenance-free turnkey operation, and extended lifetime. There is no need to replace lamps or align and adjust optics.
Fibre lasers enable cutting, engraving and marking of a variety of metallic materials due to their nanosecond pulses and high peak power.
High optical quality – The fibre’s wave-guiding properties reduce optical path’s thermal distortion, therefore producing a diffraction-limited, high-quality optical beam.
Therefore, fibre laser cutting systems offers more advantages than traditional CO2 lasers due to their high quality laser beam.
Fibre laser cutters have various applications in different industry sectors such as medical, automotive, aerospace, aviation, marine engineering, and general manufacturing. Typical fibre laser cutting applications include:
– Cutting metallic & non-metallic products.
– Precision engineering.
– Marking components for ID plaques, serial plates, VIN numbers, and trace-ability.
– High-precision sheet metal profiling.
Additionally, other applications of fibre laser cutting systems are in telecommunications, spectroscopy and directed energy weapons.
One fibre laser cutting machine is the MSF. MSF is a powerful laser cutter machine used to cut metal materials by utilising fibre laser technology, or fibre laser & plasma. It produces highly accurate and quality parts at fast cutting speeds, and low operating and maintenance costs. Additionally, this modern laser cutter machine is also energy-efficient and extremely precise.