Carbon steel
Because carbon steel contains carbon, it does not reflect light strongly, and the absorption beam is very good. Carbon steel is suitable for laser cutting machine processing in all metal materials. Therefore, carbon steel laser cutting machine has an unshakable position in carbon steel processing.
The application of carbon steel is becoming more and more extensive. The modern laser cutting machine can cut the maximum thickness of carbon steel plate up to 20MM. The slit of cutting carbon steel by oxidation melting and cutting mechanism can be controlled in a satisfactory width range, and the slit can be narrow on the thin plate. To about 0.1MM.
Stainless steel
Laser-cut stainless steel uses the energy released by the laser beam to illuminate the surface of the steel sheet to melt and evaporate the stainless steel. For the manufacturing of stainless steel sheets as the main component, laser cutting of stainless steel is a fast and efficient processing method. The important process parameters that affect the quality of stainless steel cutting are cutting speed, laser power, and air pressure.
Compared with low carbon steel, stainless steel cutting requires higher laser power and oxygen pressure, while stainless steel cutting achieves a satisfactory cutting effect, but it is difficult to obtain a completely non-stick slag, and more high pressure nitrogen is used. The laser beam is coaxially injected to blow away the molten metal so that the cut surface does not form any oxide. This is a good method, but it is more costly than traditional oxygen cutting. One way to replace pure nitrogen is to use filtered, plant-compressed air, which consists of 78% nitrogen.
When laser-cut mirror stainless steel, in order to prevent serious burns on the sheet, you need to apply a laser film!
Aluminum and alloy
Although laser cutting machines can be widely used in the processing of various metal and non-metal materials. However, some materials, such as copper, aluminum and their alloys, are difficult to process due to their own characteristics (high reflectivity).
At present, laser cutting of aluminum plates is widely used in fiber lasers and YAG lasers. Both of these devices have good performance in cutting aluminum or cutting other materials, such as stainless steel and carbon steel, but they are also incapable of processing thicker. Aluminum. Generally, the thickest of 6000W can be cut to 16mm, and the 4500W can be cut to 12mm, but the processing cost is high. The auxiliary gas used is mainly used to blow away the molten product from the cutting zone, and generally a good cut surface quality can be obtained. For some aluminum alloys, care should be taken to prevent intergranular microcracks on the surface of the slit.
Copper and alloy
Pure copper (copper) cannot be cut with a CO2 laser beam because of its high reflectivity. Brass (copper alloy) uses a higher laser power, and the auxiliary gas uses air or oxygen to cut thinner sheets.
Titanium and alloy
The laser cutting quality of titanium alloy commonly used in aircraft manufacturing is good. Although there is a little stickiness at the bottom of the slit, it is easy to clear. Pure titanium can be well coupled to the thermal energy of the focused laser beam. The chemical reaction is intense when the auxiliary gas is oxygen, and the cutting speed is fast, but it is easy to form an oxide layer on the trimming edge, which may cause overburning. For the sake of safety, it is better to use air as an auxiliary gas to ensure the quality of the cut.
Alloy steel
Most alloy structural steels and alloy tool steels can achieve good trim quality by laser cutting. Even for some high-strength materials, straight, non-stick slash trimming is achieved as long as the process parameters are properly controlled. However, for high-speed tool steels and hot-moulded steels containing tungsten, there is corrosion and slag on the laser cutting machine.
Nickel alloy
There are many varieties of nickel-based alloys. Most of them can perform oxidative melt cutting.