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Laser Cutting With Auxiliary Gas For Perfect Cutting

Mar 25, 2019

The laser cutting machine is a new type of product, which plays a major role in the operation of the factory, the production of the product, etc., and some people with certain experience know that the laser cutting machine needs gas as an auxiliary operation when it is used, and someone will ask, then the laser Is the oxygen for the auxiliary gas of the cutting machine still other gases?

When laser cutting machines cut materials such as steel plates or stainless steels, they use paving gas. For example, when oxygen is used as a paving gas, an exothermic reaction is generated, which is particularly noticeable when cutting carbon steel. Such a scheme is widely recognized.

The auxiliary gas of the laser cutting machine is preferably nitrogen. It is a better auxiliary gas proved by experts. Oxygen can be used as an auxiliary gas and it is safe, but it will cause the cutting effect of the laser cutting machine to be poor, which will affect the factory. Rate, it is easy to cause an increase in the rate of product erroneous recovery.

In order to solve this problem, repeated research by laser experts, the final use of nitrogen as a paving gas, because nitrogen is an endothermic process, essentially evaporation, the process of ablation, higher pressure means higher operating costs, nozzle Diameter has a greater impact on gas consumption, so cutting a thicker material requires a larger nozzle, so laser cutting machines typically use nitrogen as an auxiliary gas.

In this process, oxygen is used to project the laser beam on the metal surface to heat the steel plate, causing an exothermic reaction, causing the temperature of the region to reach the melting point. The molten metal is blown out by the blower and detached from the material, eventually forming a smooth, Cutting surface with oxide layer, laser cutting machine, on the other hand, when cutting stainless steel, because stainless steel has a higher melting point, its characteristics are different. When cutting quality and smoothness are included in the assessment, because of oxidation When the gas is assisted, residual oxides are formed on the metal surface, so that the cutting quality does not achieve a good effect.