Assistant gas of fiber laser cutting machine
Fiber Laser cutting machine uses different assistant gas to cut different materials. It can blow away the slag in the slit, cool the surface of the processed object, reduce the heat affected area, and prevent the dust from entering the lens holder. So assistant gas is important for fiber laser cutting machine. Let's talk about three common assistant gas of fiber laser cutting machine: Oxygen, air, nitrogen.The thickness of the cutting material is different, the pressure of the assistant gas and the required flow rate are different, and the gas pressure of the assistant gas has a direct impact on the effect of the laser cutting.
Oxygen mainly plays a role in supporting combustion, it can make the cutting speed faster and the cutting thickness thicker. Oxygen is suitable for thick plate cutting, high-speed cutting and very thin plate cutting. For example, some large carbon steel plates and some thick carbon steel plate structural parts can use oxygen.
Air is suitable for cutting aluminum plates, non-metallic and galvanized steel plates. It can reduce oxide films and save costs. Generally, when the cutting plate is relatively thick and the cutting end surface requirements are not too high, we can use air for assistant. It is widely used in some industries such as sheet metal cabinets, cabinets and cabinets.
Nitrogen is an inert gas, which prevents oxidation of the cutting end of the product during cutting and prevents burning (it is easy to occur when the sheet is thick). Nitrogen can be used for products that have high requirements on the cutting end surface and need not be exposed. For example, some decorative parts, aerospace and other special parts.
During the fiber laser machine working, Added assistant gas should be suitable for the cutting material . Because assistant gas will have a certain impact on cutting performance, including cutting speed, cutting thickness, etc.