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Laser cutting is an innovative cutting process that enables uncompromising precision. The process is therefore used whenever millimeters matter. How the process works in detail, what advantages & possibilities it offers, we have summarized in this overview.<\/p>\n
Laser cutting, along with plasma and oxyfuel cutting, is one of the thermal cutting processes<\/strong>. When cutting with a laser, light is bundled into a beam via a so-called beam guide\/cutting nozzle and the processing head (focusing optics) and thus directed as a strongly focused laser beam<\/strong> onto the material surface of the workpiece to be processed.<\/p>\n The material is heated by the laser beam to such an extent that it melts or vaporizes. The resulting vapors and melt are then expelled with a process gas. In fiber lasers<\/strong> (special type of solid-state laser), a laser beam in the mid-infrared range with a wavelength of 1,064<\/strong> nm is generated in the laser beam source and amplified via an elongated fiber.<\/p>\n <\/p>\n Laser cutting is divided into laser flame cutting, laser fusion cutting and laser sublimation cutting. Depending on the laser process, different process gases<\/strong> are used to assist or enhance the cutting process. The basic principle of all processes used in laser cutting with the fiber laser is identical. Nevertheless, each process has very special properties.<\/p>\n In laser fusion cutting, the material is melted by a focused laser beam and blown out of the kerf by the cutting gas used. Fusion cutting (also known as laser cutting) is the preferred cutting process for machining stainless steel and various aluminum alloys.<\/p>\n The process gas, usually nitrogen, protects the cut edge from unwanted oxidation due to its low-reaction properties (inert gas). This is also referred to as bright cutting.<\/p>\n The thermal input on the laser medium is rather low. This results in clean, virtually burr-free cut edges and laser parts with almost no distortion or burr. Post-processing of the parts produced in this way is often not necessary.<\/p>\n <\/p>\n In laser flame cutting (also known as laser beam cutting), oxygen is used as the cutting gas. The material to be cut is heated by the laser beam in the first step. In the second step, the cutting gas is blown into the kerf and the material is burned by the supporting effect of the oxygen.<\/p>\n The oxygen fulfills two functions, it reacts with the previously heated material and removes the liquid oxide from the kerf.<\/p>\n Due to the chemical reaction, laser flame cutting results in a small amount of burr formation on the cutting edges, which must be subsequently removed in the case of thicker films.<\/p>\n In laser sublimation cutting, the material to be processed vaporizes immediately as a result of processing with the laser beam. The resulting vapor is then blown out by the cutting gas, usually nitrogen. In sublimation cutting, there is no burr on the edges.<\/p>\n These materials are suitable for laser cutting:<\/p>\n
\nThe different laser cutting processes<\/h3>\n
Laser fusion cutting<\/h4>\n
Laser Flame Cutting<\/h4>\n
Laser sublimation cutting<\/h4>\n
\nWhat materials can a laser cut?<\/h2>\n
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\nferrous metal<\/h3>\n
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