With laser cutting areas of the use of more and more widely applicable materials are also more and more. However, different materials have different properties, so the need for attention in using the laser cutting is also different, following a brief analysis of the main materials used for laser cutting: Structural steel Cutting the material with oxygen will get better results. When using oxygen as a process gas, the cutting edge will be slightly oxidized.
For the plate thickness up to 4mm, with nitrogen as the process gas and high pressure cutting. In this case, the cutting edge will not be oxidized. Plate thickness of 10mm or more lasers use special plates and oil coated the surface of the workpiece during machining can get better results.
Cutting stainless steel needs: the use of oxygen, in the case of edge oxidation does not matter; nitrogen to obtain a non-oxidizing burr-free edge of, you do not need further treatment. Perforated plate surface coating film will get better results, without reducing the quality of processing.
In spite of a high reflectivity and thermal conductivity aluminum of a thickness of less than 6mm can be cut, depending on the alloy type, and lasers. When using oxygen cutting, the cut surface is rough and hard. With nitrogen, the cutting surface smoothness. Very difficult to cut because of its high purity, pure aluminum is only installed on the system “reflection absorption device whencutting aluminum. Otherwise, the reflection will damage optical components.
Titanium sheet with argon gas and nitrogen gas as a processing gas to cutting. Other parameters can refer to a nickel-chromium steel.
Copper and brass
Both materials have a high reflectivity and a very good thermal conductivity. Brass of a thickness of 1mm or less can be cut with nitrogen; copper in a thickness of 2mm or less can be cut, the processing gas with oxygen. The only reflection-absorption device is installed on the system when to cut copper and brass. Otherwise, the reflection will damage optical components.
Dangerous and may cut emissions of hazardous substances to remember when cutting synthetic materials. The workability of the synthetic material: thermoplastics, thermosetting materials, and synthetic rubber.
Cutting of all organic material there is a danger of ignition (with nitrogen as the process gas can also be compressed air is used as the process gas, Wood, leather, cardboard and paper, laser cutting, cutting edge scorch (brown).