With the laser cutting technology, laser cutting is more and more widely used and suitable materials are also increasing. However, different materials have different properties, so matters need attention of laser cutting are also different. Golden laser in laser cutting industry for many years, after a long period of continuous practice summed up for different materials laser cutting considerations.
The material with oxygen cutting may get better results. When using oxygen as the process gas, the cutting edge will be slightly oxidized. The sheet thickness of 4mm, nitrogen can be used as a process gas pressure cutting. In this case, the cutting edge is not oxidized. Thickness of 10mm or more of the plate, the laser and the use of special plates to the surface of the workpiece during machining oiled can get a better effect.
Cutting of stainless steel requires use of oxygen. In the case of the edge of the oxidation does not matter, the use of nitrogen to obtain a non-oxidizing and no burr edge, do not need to be re-processed. Coating the plate perforated film will get better results, without reducing the processing quality.
Despite the high reflectivity and thermal conductivity, aluminum less than 6mm thickness can be cut. It depends on the alloy type and laser capabilities. When oxygen cutting, the cut surface rough and hard. With nitrogen, the cut surface is smooth. Pure aluminum cutting is very difficult because of its high purity. Only installed on the system of "reflection-absorption”, the machine could cut aluminum. Otherwise it will destroy the reflective optical components.
Titanium sheet with argon gas and nitrogen as the process gas to cut. Other parameters can refer to the nickel-chromium steel.
Copper and brass
Both materials have a high reflectivity and a very good thermal conductivity. Thickness of less than 1mm can be used nitrogen cutting brass, copper thickness less than 2mm can be cut, the process gas must be oxygen. There are only installed on the system, "reflection-absorption" means when they could cut copper and brass. Otherwise it will destroy the reflective optical components.
Cutting synthetic material to keep in mind when cutting emissions of dangerous and potentially dangerous substances. Synthetic materials can be processed: thermoplastics, thermosetting materials, and synthetic rubber.
In all organisms exist in both cutting the risk of fire (with nitrogen as the process gas, compressed air can also be used as a process gas). Wood, leather, cardboard and paper can be cut with a laser, cutting edge can scorch (brown).
By different materials, different needs, using the most appropriate auxiliary gas and processing technology, will get the best results.