What are the different characteristics of materials used in laser cutting machines? With the development of laser cutting technology, the field of laser cutting is more and more widely used, and there are more and more suitable materials. However, different materials have different characteristics, so the matters needing attention when using laser cutting are also different.
Laser cutting machine
structural steel
When the material is cut with oxygen, better results will be obtained. When oxygen is used as the processing gas, the cutting edge will be slightly oxidized. For plates with a thickness of 4mm, nitrogen can be used as the processing gas for high-pressure cutting. In this case, the cutting edge will not be oxidized. For plates with a thickness of more than 10mm, using special plates for lasers and oiling the surface of the workpiece during processing can get better results.
stainless steel
Cutting stainless steel requires: using oxygen, when the edge oxidation is not important; If nitrogen is used to obtain edges without oxidation and burr, no further treatment is required. Coating oil film on the surface of the plate will get better perforation effect without reducing the processing quality.
aluminium
Despite its high reflectivity and thermal conductivity, aluminum with a thickness of less than 6mm can be cut, depending on the alloy type and laser capability. When cutting with oxygen, the cutting surface is rough and hard. When nitrogen is used, the cutting surface is smooth. Pure aluminum is very difficult to cut because of its high purity. Only when the system is equipped with a "reflection and absorption" device can aluminum be cut. Otherwise, the reflection will destroy the optical components.
titanium
Titanium plates are cut with argon and nitrogen as processing gases. Other parameters can refer to nickel chromium steel.
Copper and brass
Both materials have high reflectivity and excellent thermal conductivity. Brass with thickness less than 1mm can be cut with nitrogen; Copper with thickness less than 2mm can be cut, and oxygen must be used for processing gas. Copper and brass can be cut only when a "reflection absorption" device is installed on the system. Otherwise, the reflection will destroy the optical components.
synthetic material
When cutting synthetic materials, keep in mind the dangers of cutting and the dangerous substances that may be discharged. Processable synthetic materials include thermoplastic, thermosetting materials and artificial rubber.
organic compound
There is a danger of ignition in all organic cutting (nitrogen is used as the processing gas, and compressed air can also be used as the processing gas). Wood, leather, cardboard and paper can be cut by laser, and the cutting edge will be scorched (brown).