How Does Fiber Laser Cutters Work?

Fiber Laser Cutters use a low-maintenance solid-state laser source to generate a laser beam that is delivered through fiber optic cable to the laser cutting head. This fiber transfers the beam with a beam quality tailored for cutting metal.smooth cuts, and low processing costs. The Fiber Laser Cutters is the most advanced technology to replace traditional metal cutting equipment. Do you know how the fiber laser metal cutting machine malfunctions?

Do you know how the fiber laser metal cutting machine malfunctions?

1. The laser is a highly concentrated single-wavelength beam.

Laser is another major invention of mankind since the 20th century, following nuclear energy, computers, and semiconductors. It is called the "fastest knife", "most accurate ruler", and "brightest light".

The laser is a highly concentrated single-wavelength beam. Under each wavelength of light, various materials absorb, reflect, and transmit the light in different amounts.

2. The laser beam is a series of very high intensity light with a single wavelength or color.

For example: in the case of a typical CO2 laser, the wavelength is in the infrared part of the spectrum, so it is invisible to the human eye.

When the beam passes through the beam path of the machine from the laser resonator that produces the beam, the diameter of the beam is only about 3/4 inch. It may be reflected in different directions by many mirrors or "beam benders" before finally focusing on the board. The focused laser beam passes through the hole of the nozzle before hitting the plate. Compressed gas, such as oxygen or nitrogen, flows through the nozzle hole.

3. The Fiber Laser Cutters uses a high-power density laser beam to cause the material to rapidly heat, melt and partially or completely evaporate.

For example: when cutting mild steel, the heat of the laser beam is enough to start a typical "oxy-fuel" combustion process, and the laser cutting gas will be pure oxygen, just like an oxy-fuel cutting torch. When cutting stainless steel or aluminum, the laser beam simply melts the material, and then uses high-pressure nitrogen to blow the molten metal out of the cut.

Generally, assist gas is used to help push molten material out of the cutting area.

4. Then, the laser cutting head moves on the metal plate in the shape of the required part to cut the part from the plate.

The capacitive height control system maintains a very precise distance between the end of the nozzle and the plate being cut. This distance is important because it determines the position of the focal point relative to the surface of the board. The quality of the cut can be affected by raising or lowering the focus from directly above the surface of the sheet, or directly below the surface.

5. Working principle of Fiber Laser Cutters

The laser light emitted from the laser is focused into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point, and the high-pressure gas coaxial with the beam blows away the molten or vaporized metal.

With the movement of the relative position of the beam and the workpiece, the material will finally form a slit, so as to achieve the purpose of cutting.

6. Attention

When performing laser cutting, it is best to adjust the angle of the laser so that the smoke generated during the cutting process will not collect on the laser optics like soot.

In addition, when cutting (or welding) highly reflective surfaces, it is important to prevent the laser beam from reflecting off the surface and returning to the laser optics, otherwise they will be damaged.

Fiber Laser Cutters have been gradually popularized in metal processing industries. We believe many laser machine investors have interest in the question that which industries are the mainstream application field of fiber laser cutting machine, so that to develop their laser business better. Below we concluded 9 main applications of fiber laser metal cutting for your reference.

Laser Cutting belongs to thermal processing equipment with CNC control,  it is the  popular and efficient way of all metal cutting machinery. Laser is widely used in Agricultural Machinery, Metal working machinery, Electrical Equipment, Kitchen, Elevator,Advertise, Signs, Auto decoration, Lighting hardware, LED Field, Precision Metal Parts, Metal Products and other Metal industries,