Laser cutting of general carbon steel
Low carbon steel with iron content more than 99% is suitable for oxygen melting laser cutting. The oxidation reaction of iron will generate a large amount of heat, which can reduce the energy requirements of the laser. In addition, oxygen can freely enter the molten material through the iron oxide layer caused by the oxidation reaction. Due to the low viscosity of the oxide slag, it is easy to be blown away by the air flow. Therefore, laser cutting low carbon steel has high speed and smooth cut.

Laser cutting of stainless steel
High-pressure nitrogen is generally used for cutting stainless steel. The laser energy is high, the incision is white, bright, non-oxidation, non-discoloration, and less burr. If oxygen is used for cutting, the speed can be faster under the same power, but the cut will be oxidized and black. Considering that stainless steel contains different components of chromium or nickel, different types of stainless steel may require different cutting parameters, and the effect is also different.
Laser cutting copper material
Copper is very similar to aluminum. Brass has a high reflectivity to laser, but red (purple) copper needs oxygen blowing to cut better. There will be rough edges on the back, which is easy to scrape off.
Laser cutting of aluminum materials
Due to the high reflectivity of aluminum and its alloys to laser, it needs to use higher energy to cut better. Air or nitrogen can be used for cutting. The incision is relatively white, but there are a small amount of foam hairs on the back of both air and nitrogen cutting, but it is easy to remove.
Laser cutting of nickel alloy
The laser cutting of nickel alloy is similar to the cutting of stainless steel, but because of the high viscosity of molten nickel, the slag is more likely to stick to the back of the cutting seam, which is easy to produce burrs. Generally, it is better to cut with oxygen.
Laser cutting of titanium and its alloys
Oxygen cutting will produce violent reaction because the oxidation reaction of titanium releases a lot of heat energy. Although the speed is very fast, it is easy to cause the incision to burn excessively. Generally speaking, air cutting is used. There is a small amount of slag on the back, but it is easy to remove and control the cutting effect. Nitrogen cutting can also reduce the problem of oxidation pollution, but the thermal effect of cutting can easily change the mechanical properties of materials.

About HGTECH: HGTECH is the pioneer and leader of laser industrial application in China, and the authoritative provider of global laser processing solutions. We have comprehensively arranged laser intelligent machine, measurement and automation production lines, and smart factory construction to provide overall solutions for intelligent manufacturing.