Why laser cutting machine is used for stainless steel processing
XT Laser-stainless steel machine light cutting machine
Stainless steel laser cutting machine is a kind of metal forming equipment. Its main cutting material is not limited to stainless steel, but can be used for cutting stainless steel, carbon steel, alloy steel, silicon steel, spring steel and other metals. Its main principle is to use the energy released when the laser beam irradiates the surface of the stainless steel plate to melt and evaporate the stainless steel plate and finally cut the plate.
Use of stainless steel
Stainless steel has a wide range of applications, such as kitchen equipment, general stretch materials, gas stoves, refrigerators, electrical appliances, washing machines, dryers and microwave ovens, electronic components, steel pipes, decorative pipes, structural pipes, exhaust pipes, building materials, regrinding, elevators, interior and exterior decoration materials, windows, doors, chemical equipment, heat exchangers, boilers, tanks, etc., which shows that stainless steel is widely used.
Principle of stainless steel laser cutting machine
Laser cutting machine for stainless steel sheet occupies a large proportion in industrial production. The main area of stainless steel and low-carbon copper is their different composition, and the cutting mechanism is also different. Stainless steel containing 1%~20% chromium tends to destroy the oxidation process.
During cutting, the iron in the stainless steel will react exothermically with oxygen. The oxidation of chromium has the characteristic of preventing oxygen from entering the molten material, which reduces the amount of oxygen entering the molten layer. The oxidation of the molten layer is incomplete, the reaction is reduced, and the cutting speed is reduced. Compared with low carbon steel, stainless steel cutting requires higher laser power and oxygen pressure. Although stainless steel cutting achieves satisfactory cutting effect, it is difficult to obtain a completely slag free cutting seam. Using inert gas as auxiliary gas to cut stainless steel can obtain non-oxidation trimming, which can be directly used for welding, but its cutting speed is about 10% lower than that of oxygen as auxiliary gas.
Advantages and disadvantages of laser cutting of stainless steel
The cost of stainless steel laser cutting is higher than that of wire cutting, and its accuracy is not as good as that of wire cutting, but its speed is twice that of wire cutting. It can realize mass production, and after cutting, it can process non-metallic materials, and realize intelligent processing. One machine replaces multi-level, and becomes the core of processing equipment. It can be seen that stainless steel laser cutting is a fast and effective processing method.
Precautions for laser cutting with film
When laser cutting mirror stainless steel, it is necessary to stick laser film to prevent serious scald of the plate! Although there is film protection, there will still be a little scald on the edge. At this time, it is necessary to strictly control the laser cutting process parameters in the processing process to maintain the good corrosion resistance of such materials. The most important process parameters affecting the cutting quality of stainless steel are cutting speed, laser power, oxygen pressure and focus.
How to solve the burr
In addition, the surface smoothness of stainless steel products in many industries is relatively high, so what should we do if there is burr during laser cutting of stainless steel? The burr in stainless steel laser cutting is generally caused by the cutting nozzle of the cutting head. This factor should be considered first. If the cutting nozzle cannot be replaced, it is necessary to check whether the motion of the guide rail of the laser cutting machine is stable.