In remote laser cutting the material is partially evaporated ablated by a high intensity laser beam allowing thin sheets to be cut with no assist gas. This parameter is key in determining the fusion zone profile area of base metal melted on a workpiece.
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Laser beam machining lbm is one of the most widely used thermal energy based non contact type advance machining process which can be applied for almost whole range of materials.
Characteristics of laser beam machining. Research scholar department of production engineering kits college of engineering shivaji. Investigation of effect of laser beam machining lbm process parameters on performance characteristics of stainless steel ss 304 mr. In this process a laser beam of high energy is made to strike on the workpiece the thermal energy of the laser gets transferred to the surface of the wp workpiece. Laser beam cutting is superior to any cutting method conventional or non conventional because of material versatility no wear or change of tool high material utilization and production flexibility and high accuracy and edge quality. Molten metal which forms a layer of debris on the surface of the material during picosecond machining. Laser beam machining lbm is a non conventional machining manufacturing process a form of machining in which a laser is directed towards the work piece for machining. Laser beam is focussed for melting and vaporizing the unwanted material from the. 1983 characteristics of laser beams for machining. Eds physical processes in laser materials interactions. Nato advanced study institutes series series b. University kolhapur maharashtra india. Laser beam machining lbm is a form of machining process in which laser beam is used for the machining of metallic and non metallic materials. Summary of ebm characteristics. The laser cutting process lends itself to automation with offline cadcam systems controlling either three axis flatbed systems or six axis robots for three dimensional laser cutting. Laser is a highly coherent in space and time beam of electromagnetic radiation with wavelength varying from 01mm to 70mm.
Among these technologies ultrashort pulsed laser ablation processes have gained. This process uses thermal energy to remove material from metallic or nonmetallic surfaces. Laser beam machining lbm. Like a beam of high velocity electrons a laser beam is also capable of producing very high power density. Laser beam gaussian beam. In laser beam welding or heat treating the instantaneous laser beam power per unit area. Schematic of laser beam cutting is shown in fig. Currently designed micro features on surfaces are being fabricated by mechanical micro machining ion and laser beam machining micro ecm electro chemical machining micro edm electro discharge machining and other methods as mentioned by wang et al.
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