By vantal As an important equipment in modern industrial manufacturing, the laser cutting machine has been widely recognized for its efficient and precise cutting capabilities. However, in the laser cutting process, the choice of cutting gas has an important impact on the cutting quality and efficiency. This article will explore in depth the selection of cutting gas in laser cutting machines to help readers better understand and apply this technology.At first, laser cut machine It developed out of control and gradually opened up a sky of its own. https://www.cnyoniklaser.com/
Revealing the secrets of laser cutting machines: How to choose the right cutting gas? ?
1. The role of cutting gas in laser cutting machines
In the cutting process of laser cutting machines, auxiliary gas plays a vital role. First, the auxiliary gas can blow away the slag in the coaxial slit to ensure the continuity and accuracy of the cutting. Secondly, the auxiliary gas can cool the surface of the processed object, reduce the heat-affected zone, and protect the cutting surface from thermal damage. In addition, some specific gases can also protect the parent material, prevent oxidation and nitridation, and improve the quality and corrosion resistance of the cutting surface.
2. Common cutting gases and their characteristics
?Air?: Air is an economical cutting gas that can be directly provided by an air compressor. Although air contains about 20% oxygen, its cutting efficiency is far less than that of pure oxygen, but it is similar to the cutting capacity of nitrogen. The cut end face of air cutting will turn yellow and a trace amount of oxide film will appear, which can be used as a measure to prevent the coating layer from falling off. However, when the quality requirements of the cutting product are high, metals such as aluminum, aluminum alloy, and stainless steel are not suitable for air cutting because air will oxidize the parent material.
?Nitrogen?: Nitrogen is an inert gas used to prevent the appearance of oxide film in laser cutting and achieve non-oxidation cutting. The cut end face of nitrogen cutting is white, and has the characteristics of being able to be directly welded and coated, and having strong corrosion resistance. Nitrogen is mainly suitable for cutting metal materials such as stainless steel, electroplated steel plates, brass, aluminum, and aluminum alloys.
?Oxygen?: Oxygen is mainly used for laser cutting of carbon steel. The use of oxygen reaction heat can greatly improve the cutting efficiency, and the oxide film produced at the same time will increase the beam spectrum absorption factor of the reflective material, which will help the cutting process. The cut end face of oxygen cutting is black or dark yellow, which is mainly suitable for cutting materials such as rolled steel and carbon steel for mechanical structures.
?Argon?: Argon is also an inert gas and is used to prevent oxidation and nitridation in laser cutting. Compared with nitrogen, the price of argon is higher, so the cost is increased accordingly. Argon is mainly used for cutting process products with extremely high requirements for cutting surface quality.
3. How to choose the right cutting gas
When choosing a cutting gas, you need to consider multiple factors, including the type of metal material, the requirements for cutting quality, the cutting cost, and production efficiency. Here are some specific suggestions:
?Choose according to metal material?: Different metal materials have different requirements for cutting gas. For example, carbon steel is usually cut with oxygen, while stainless steel is more suitable for cutting with nitrogen or air. Aluminum alloys can be cut with nitrogen or air, but the air cutting speed is relatively fast.
?Consider cutting quality requirements?: When the quality requirements of the cutting product are high, it is necessary to choose a cutting gas that can protect the parent material and prevent oxidation. For example, for easily oxidized materials such as stainless steel and aluminum alloys, nitrogen cutting can be selected to obtain better cutting surface quality.
?Comprehensively consider cost and production efficiency?: When choosing a cutting gas, you also need to consider cost and production efficiency. Although air cutting has a slightly lower cutting efficiency, it is extremely low cost and is suitable for large-scale, low-demand cutting tasks. Nitrogen or argon cutting, although more expensive, can achieve better cutting quality and wider applicability.
IV. Precautions in practical applications
In practical applications, the following points should also be noted:
?Regularly replace the air compressor filter: For equipment using air cutting, the air compressor filter needs to be replaced regularly to ensure cutting quality.
?Choose high-quality cutting gas: The quality of the cutting gas has a great influence on the cutting effect. Therefore, when choosing cutting gas, high-quality products should be selected to ensure cutting quality and production efficiency.
?Adjust gas pressure and flow according to cutting thickness: The pressure and flow of cutting gas have a great influence on the cutting effect. Therefore, in actual operation, it is necessary to adjust the gas pressure and flow according to the thickness of the cutting material and the cutting requirements to achieve the best cutting effect.
V. Conclusion
Revealing the secrets of laser cutting machines: How to choose the right cutting gas? ?
Laser cutting machines play an increasingly important role in modern industrial manufacturing. And choosing a suitable cutting gas is one of the keys to ensure efficient and precise cutting of laser cutting machines. By deeply understanding the characteristics and applicable scope of different cutting gases, and comprehensively considering factors such as the type of metal materials, cutting quality requirements, cost and production efficiency, we can better select and use cutting gases, thereby improving the cutting quality and production efficiency of laser cutting machines.
In summary, choosing the right cutting gas is crucial to the cutting quality and efficiency of laser cutting machines. I hope this article can provide readers with valuable reference and inspiration.