How to choose auxiliary gas for laser cutting machine
As we all know, auxiliary gas must be added during the processing of laser cutting machine, and the choice of auxiliary gas is also a big knowledge. Today, BCAM laser will teach you how to choose auxiliary gas for laser cutting machine.
The auxiliary gases that can be used by the laser cutting machine are mainly oxygen, nitrogen, air and argon. Below we will introduce the uses and characteristics of different auxiliary gases for your reference only.
is mainly used for laser cutting machines to cut carbon steel. While the oxygen reaction heat is used to increase the cutting efficiency in a large format, the generated oxide film will increase the beam spectrum absorption factor of the reflective material. The cut end is black or dark yellow.
is mainly suitable for rolled steel, rolled steel for welding structure, carbon steel for machine structure, high tension plate, tool plate, stainless steel, electroplated steel plate, copper, copper alloy, etc.
Some metals use oxygen to form an oxide film on the cutting surface when cutting, and nitrogen can be used to prevent oxide film from appearing in oxidation-free cutting. The non-oxidized cutting surface has the characteristics of direct welding and painting, and strong corrosion resistance. The end face of the incision is whitish.
The main applicable plates are stainless steel, electroplated steel plate, brass, aluminum, aluminum alloy, etc.
Air can be provided directly by an air compressor, so the price is very cheap compared with other gases. Although the air contains about 20% oxygen, the cutting efficiency is far less than that of oxygen, and the cutting ability is similar to that of nitrogen. A small amount of oxide film will appear on the cut surface, but it can be used as a measure to prevent the coating layer from falling off. The end face of the incision is yellowed.
The main applicable materials are aluminum, aluminum alloy, stainless copper, brass, electroplated steel plate, non-metal and so on.
Argon is an inert gas, used in laser cutting machine cutting to prevent oxidation and nitriding, and also used in welding. Compared with other processing gases, the price of japonica rice increases the cost accordingly. The end face of the incision is whitish.
The main applicable materials are titanium, titanium alloys, etc.The use of auxiliary gas can not only blow away the slag in the coaxial kerf, but also cool the surface of the processed object, reduce the heat-affected zone, cool the focusing lens, and prevent smoke and dust from entering the lens holder to pollute the lens and cause the lens to overheat. The choice of gas pressure and type has a greater impact on the cutting process, and the choice of the type of auxiliary gas will have a certain impact on the cutting performance, including cutting speed, cutting thickness, etc.