5 differences between CO2 laser cutting machine and fiber laser cutting machine

Fiber laser cutting machine is also one of the most commonly used laser cutting machines. Unlike the gas laser tube and light transmission of CO2 laser machines, fiber laser cutting machines use fiber lasers and cables to transmit the laser beam. The wavelength of the fiber laser beam is only 1/10 of the wavelength produced by the CO2 laser. So compared with CO2 laser cutting machine, fiber laser cutting machine has better consistency and reliability, and can process finer patterns. The main difference between CO2 laser cutting machine and fiber laser cutting machine lies in the following aspects.

1. Laser

The CO2 laser engraving machine uses a CO2 laser tube to generate a laser beam. The working fluid is mainly CO2, and O2, He, Xe, etc. are auxiliary gases. The CO2 laser beam is reflected by the reflective and focusing lens and focused to the laser cutting head. Fiber laser cutting machines generate laser beams through multiple diode pumps. The laser beam is then transmitted to the laser cutting head through a flexible fiber optic cable.

2. Processing materials

The beam wavelength of the CO2 laser is 10.64um, which is more easily absorbed by non-metallic materials. However, the beam wavelength of a fiber laser is 1.064um, which is 10 times shorter. Due to this smaller focal length, fiber laser cutting machines are almost 100 times more powerful than CO2 laser cutting machines with the same power output. So fiber laser cutting machine is very suitable for cutting metal materials.
CO2 laser engraving machine can cut and engrave metal materials with low efficiency. So CO2 laser machines are mainly used for cutting and engraving of non-metallic materials. For example, wood, acrylic, paper, leather, fabric, etc.
Fiber laser cutting machine, also known as metal laser cutting machine, is mainly for metal materials. Such as stainless steel, carbon steel, galvanized steel, copper, aluminum, etc.

3. Production cost

CO2 acrylic laser cutting machine will consume a lot of gas when working. But its photoelectric conversion rate is only 8% to 10%. The fiber laser cutting machine consumes less in the process of processing, and the photoelectric conversion rate can reach 25%-30%. So fiber laser cutting machine is more energy efficient than CO2 laser cutting machine.

4. The processing effect of fiber laser cutting machine is better

The fiber laser has a short wavelength characteristic, which improves the absorption of the cutting material to the beam, and makes it possible to cut non-conductive materials such as brass. When the thickness of the cutting material reaches 6mm, the cutting speed of the 1500W fiber laser cutting machine is equivalent to that of the 3000W carbon dioxide laser cutting machine.

blog metal laser cutter2
blog metal laser cutter1

5. Maintenance cost

CO2 laser cutting machines use gas as the luminescent medium. Due to the purity of the CO2 gas, the cavity will become contaminated and require regular cleaning. Mirrors require maintenance and alignment, so routine maintenance is more involved. A kilowatt CO2 laser cutter costs at least $20,000 per year. Generally speaking, fiber laser cutting is more environmentally friendly and convenient in the daily maintenance of equipment.
Fiber laser cutting is basically maintenance-free and has few wearing parts. It can withstand harsh working environments and has a high resistance to dust, shock, shock, humidity and temperature. Therefore, the maintenance cost of fiber laser cutting machine is low.