Page 4 - Extraction and filtration solutions for laser fume and laser dust_NA
P. 4

Technologies and



            emissions




            Long pulse laser




                                                                                 Ejected material
            Surface debris
                                                                                              Damaged surface
                                            Recast layer












            Micro cracking

                                                                   Melt
                                                                  zone
                           Shock waving                                                   Heat transfer to
                                                                                          surrounding material






            Ultra short pulse laser





            No damaged surface

            No debris

            No recast layer

                                                       Plasma plume







            No micro cracking

            No shock waving
                                                                               Hot, dense ion/electron soup
            No melt zone






            Laser fume extraction technologies                                                                                                                                                                                            5
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