What are the effects of different auxiliary gases on the processing quality of Fiber laser cutting machines?

The impact of different auxiliary gases on the processing quality of fiber laser cutting machine is mainly reflected in the following aspects:

Oxygen (O₂)‘s effect on fiber laser cutting machine performance

Oxygen is one of the most commonly used assist gases, especially when cutting carbon steel and stainless steel. Oxygen can support combustion, enhance the thermal reaction during cutting, and increase cutting speed.

Oxygen cutting can generate high temperatures, causing the metal at the cut to quickly oxidize and form slag. The slag is blown away by the high-speed airflow, making the cut cleaner. However, cutting with oxygen may leave an oxide layer on the edges and may not be suitable for some applications that require a high-quality cut surface.

Nitrogen (N₂)‘s effect on fiber laser cutting machine performance

Nitrogen is commonly used to cut stainless steel, aluminum and other non-ferrous metals. Nitrogen is an inert gas that does not chemically react with most metals, thus reducing oxidation and nitridation and maintaining cut edge finish and color consistency.

Cutting with nitrogen is relatively slow, but results in better cut quality and less heat-affected zone. Nitrogen is ideal for cutting applications that require high precision and no oxide layers.

Argon (Ar)‘s effect on fiber laser cutting machine performance

Argon is also a commonly used inert gas, mainly used for cutting active metals such as copper and titanium, as well as thin plate materials. Argon prevents oxidation and nitridation of the cutting area, providing good cutting edge quality.

Similar to nitrogen, argon cuts at a slower speed but can produce high-quality cutting results. It is especially suitable for fields such as aerospace and electronics industries that require extremely high cutting quality.

Compressed air‘s effect on fiber laser cutting machine performance

Compressed air is an economical auxiliary gas option, containing approximately 80% nitrogen and 20% oxygen along with other trace gases. The cutting effect of compressed air is between that of oxygen and nitrogen, and it is suitable for cutting mild steel and medium-thick stainless steel.

However, compressed air cutting may cause slight oxidation due to the presence of oxygen, and moisture and oil in the air quality may affect cut quality and lens life.

Helium (He)‘s effect on fiber laser cutting machine performance

Helium is a light inert gas mainly used for high-speed cutting of thin sheet materials. Helium has good heat transfer properties and can increase cutting speeds, especially when cutting highly reflective materials such as aluminum and copper.

However, helium is more expensive and is usually only used in special applications or when extremely high cutting speeds are required. In general, the choice of auxiliary gas depends on the type of material being cut, its thickness, cutting speed requirements, and final cut quality requirements. In actual operation, it may be necessary to experiment and adjust based on specific conditions to find the optimal auxiliary gas and parameter settings.

Fiber laser cutting machine supplier – MYT

MYT specializes in the manufacturing and research and development of CNC press brakes, fiber laser cutting machines, wire forming machines, and HVAC duct making machines. Utilizing cutting-edge technology, MYT machines are distributed to diverse global markets, earning consistent acclaim from satisfied customers.

At the heart of MYT’s growth is a commitment to technological innovation, driving core development. With years of rapid progress, MYT has established a robust global sales team, aspiring to become a leading company in the sheet metal bending and cutting industry worldwide.

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