As one of the core machinery of modern manufacturing industry, laser cutting machine plays a vital role in many fields such as aerospace, automobile manufacturing, electronics and electrical appliances due to its high precision, high efficiency and wide material adaptability. In the laser cutting process, the selection and application of auxiliary gas are key factors to ensure cutting quality and improve cutting efficiency. Do you know what gases can be used for cutting?

1. Oxygen (O₂)

Mechanism of action: Oxygen mainly plays a combustion-supporting role in laser cutting. When the laser beam irradiates the metal surface, the metal quickly absorbs energy and heats up, undergoes a violent oxidation reaction with oxygen, and releases a large amount of heat energy, thereby accelerating the melting and vaporization process of the metal. At the same time, the high-speed airflow of oxygen can quickly blow away the molten metal to form a smooth cutting surface.

2. Nitrogen (N₂)

Mechanism of action: Nitrogen is an inert gas that mainly plays a protective role in laser cutting. Nitrogen can prevent oxidation of the metal surface during the cutting process and maintain the smoothness and color of the cutting surface. At the same time, the high-speed flow of nitrogen can also blow away the molten metal to ensure the smooth progress of the cutting process.

3. Air

Mechanism of action: As an auxiliary gas for laser cutting, air mainly uses the oxygen component in it to support combustion. Although the oxygen content in the air is relatively low (about 20%), it can still play a certain combustion-supporting role under certain conditions. At the same time, the nitrogen in the air can also play a certain protective role.

4. Argon (Ar)

Mechanism of action: Argon is also an inert gas and is mainly used to prevent oxidation and melt cutting in laser cutting. Argon can effectively protect the cutting surface from oxidation and improve cutting quality. At the same time, argon can also improve the stability of the laser beam, thereby improving cutting accuracy.