What Gas Does A Fiber Laser Cutting Machine Use When Cutting Metal?

What Gas Does A Fiber Laser Cutting Machine Use When Cutting Metal?

Fiber laser cutting machine is a device that uses high-energy-density laser beams to cut metal materials. It is widely used in industrial manufacturing, automobiles, aviation, ships, and other fields. The cutting quality, efficiency, and cost of fiber laser cutting machines are affected by many factors, one of which is the selection and use of cutting gas.

Cutting gas is a high-pressure gas ejected from the nozzle of the cutting head, coaxial with the laser beam, and plays the following roles in the cutting process:

1. Blow away the slag in the slit to keep the slit clean and prevent the slag from re-adhering to the slit and affecting the cutting quality;

2. Cool the cutting area, reduce the heat-affected zone, and improve cutting accuracy and surface finish;

3. Protect the focusing lens to prevent smoke and slag from entering the lens holder and contaminating the lens, causing the lens to overheat or be damaged;

4. Participate in the cutting reaction to improve cutting efficiency and energy utilization, or prevent oxidation of the incision and protect the base material.

There are four main cutting gases commonly used in fiber laser cutting machines: air, nitrogen, oxygen, and argon. When selecting cutting gases, factors such as the type, thickness, surface quality, and subsequent processing of the cutting material need to be comprehensively considered, as well as the cost of the cutting gas. , supply, stability, and other factors to select the most suitable cutting gas. Generally speaking, the following principles can be used as a reference:

1. For materials that are not easily oxidized, such as stainless steel, nitrogen or air should be selected as the cutting gas to prevent oxidation of the cut and keep the cut clean and shiny;

2. For easily oxidized materials such as carbon steel, oxygen should be selected as the cutting gas to improve cutting efficiency and energy utilization and reduce cutting costs;

3. For highly reflective materials such as aluminum and copper, nitrogen or argon should be selected as the cutting gas to increase the cutting temperature and cutting thickness and prevent reflection damage of the laser beam;

4. For special materials such as titanium and titanium alloys, argon gas should be selected as the cutting gas to prevent nitridation of the cut and keep the cut clean and shiny;

5. For materials that do not require high cutting quality, air can be selected as the cutting gas to reduce cutting costs and improve cutting efficiency.

DXTECH is a comprehensive laser enterprise integrating R&D, production, and sales. It has 13 years of experience in the laser industry. Its main products include fiber laser cutting machines, bending machines, laser welding machines, laser cleaning machines, etc. DXTECH fiber laser cutting machine is a high-performance, high-efficiency, high-quality cutting equipment, suitable for cutting various metal and non-metal materials, and is an ideal choice in industrial manufacturing. If you are interested in the DXTECH laser cutting machine, please contact us We look forward to cooperating with you!