Now days, laser cutting technology that uses a laser to cut materials like ms and ss, and it is typically used for industrial manufacturing and engineering applications developments. Laser cutting and processing with high speed and high accuracy directed by computer software technology at the material to be cut. The material then melts, burns, vaporizes away, or is blown away by a jet of gas, leaving an edge with a high quality surface finish. Industrial laser cutters are used to cut flat-sheet material as well as structural and piping materialsPrecise CNC Laser Cutting Technology

In Sheet Metal Business, three types of lasers machines used in sheet metal laser cutting. The CO2 laser is precise cutting, boring, and engraving. The neodymium and neodymium yttrium-aluminum-garnet lasers are identical in style and differ only in application. Nd is used for boring and where high energy but low repetitions are required. The Nd-YAG laser is used where very high power is needed and for boring and engraving. Both CO2 and Nd/ Nd-YAG lasers can be used for welding.

Common variants of CO2 lasers include fast axial flow, slow axial flow, transverse flow, and slab.

CO2 lasers are commonly “pumped” by passing a current through the gas mix (DC-excited) or using radio frequency energy (RF-excited). The RF method is newer and has become more popular. Since DC designs require electrodes inside the cavity, they can encounter electrode erosion and plating of electrode material on glassware and optics. Since RF resonators have external electrodes they are not prone to those problems.
In addition to the power source, the type of gas flow can affect performance as well. In a fast axial flow resonator, the mixture of carbon dioxide, helium and nitrogen is circulated at high velocity by a turbine or blower. Transverse flow lasers circulate the gas mix at a lower velocity, requiring a simpler blower. Slab or diffusion cooled resonators have a static gas field that requires no pressurization or glassware, leading to savings on replacement turbines and glassware.

Comparison to mechanical cutting
Advantages of laser cutting over mechanical cutting include easier work holding and reduced contamination of work piece. Precision may be better since the laser beam doesn’t wear during the process. There is also a reduced chance of warping the material that is being cut, as laser systems have a small heat-affected zone. Some materials are also very difficult or impossible to cut by more traditional means. A disadvantage of laser cutting is the high energy required.

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