Fiber laser cutting machines can cut metal materials because the wavelength of the laser can be absorbed by these materials. However, the absorption rate of the wavelength varies depending on the material. Therefore, when cutting different metal materials, it is important to choose different cutting parameters and auxiliary gases based on different materials. Below, the Primalaser manufacturer will introduce it to everyone.
Cutting this material with oxygen will achieve better results. When oxygen is used as a processing gas, the cutting edge will be slightly oxidized. The metal laser cutting machine can use nitrogen gas as the processing gas for high-pressure cutting of 4mm thick plates. In this case, the cutting edge will not be oxidized. For plates with a thickness greater than 10 millimeters, using the laser specialized plate of the steel plate laser cutting machine can achieve good results by applying oil to the surface of the workpiece during the processing.
Cutting stainless steel requires the use of oxygen, in cases where edge oxidation is not important; Nitrogen is used to obtain edges that are free of oxidation and burrs and do not require further treatment. Applying an oil film on the surface of the sheet can achieve better drilling results without reducing the processing quality.
Although the reflectivity and thermal conductivity are high, aluminum with a thickness of less than 6mm can also be cut, depending on the alloy type and laser capability. When cutting with oxygen, the cutting surface is rough and hard. When using nitrogen, the cutting surface is smooth. Pure aluminum is difficult to cut due to its high purity. Only by installing a “reflection absorption” device on the fiber laser cutting machine system can aluminum be cut. Otherwise, reflection will damage the optical components.
Titanium plates are cut using argon and nitrogen as process gases. Other parameters can refer to nickel chromium steel.
Copper and brass
Both materials have high reflectivity and excellent thermal conductivity. Brass with a thickness less than 1mm can be cut with nitrogen gas. Copper with a thickness less than 2mm can be cut, and the processing gas must be oxygen. Copper and brass can only be cut when a “reflection absorption” device is installed on the system. Otherwise, reflection will damage the optical components.
When cutting synthetic materials, please remember the dangers of cutting and the potential emissions of harmful substances. Processable synthetic materials include thermoplastic, thermosetting materials, and synthetic rubber.
All organic cutting poses a risk of ignition (nitrogen can be used as a process gas, or compressed air can be used as a process gas). Wood, leather, cardboard, and paper can be cut with laser, and the cutting edges will burn (brown).
The use of laser equipment is gradually becoming popular. Packaging laser marking machines, leather laser marking machines, rubber sheet laser engraving machines, metal laser marking machines, etc. have already become a part of people’s lives. When using a laser cutting machine, it is necessary to determine the cutting characteristics and requirements in order to achieve better processing.