Laser sectionem can be done with or without assist gas to help remove molten or vaporized material. Secundum varios gasorum auxiliares usus, laser sectio in quattuor categorias dividi potest: exhalatio sectio, sectio liquatio, oxidatio fluxum secans et secans fractura moderata.

 

(I) Vaporization sectionem

A high-energy-density laser beam is used to heat the workpiece, causing the surface temperature of the material to rise rapidly and reach the boiling point of the material in a very short time, which is enough to avoid melting caused by heat conduction. Materia incipit vaporare, et pars materiae vaporatur in vaporem et evanescit. Celeritas horum vaporum eiectio est velocissima. While the vapors are ejected, part of the material is blown away from the bottom of the slit by the auxiliary gas flow as ejections, forming a slit on the material. Per processus vaporizationis secantis, vapor particulas liquefactas tollit et obruta lota, perforata formans. During the vaporization process, about 40% of the material disappears as vapor, while 60% of the material is removed by the airflow in the form of molten droplets. Vaporizationis calor materiae est plerumque amplissimus, ideo laser vaporizationis secans magnam vim et vim densitatis requirit. Some materials that cannot be melted, such as wood, carbon materials and certain plastics, are cut into shapes by this method.Laser vapor cutting is mostly used for cutting extremely thin metal materials and non-metal materials (such as paper, cloth, wood , plastic et globulus, etc.).

 

(2) Liquefactio incisionis

Materia metallica calefactione cum laser trabe liquefacta est. When the power density of the incident laser beam exceeds a certain value, the interior of the material where the beam is irradiated begins to evaporate, forming holes. Cum talis foraminis formatur, corpus agit nigrum et omnem trabem incidentis energiae haurit. Parva foramen muro fusili metallo cingitur, et tunc gas non-oxidizing (Ar, He, N, etc.) per COLLUM coaxial trabis spargitur. Valida gasorum pressio causat liquorem metalli circa foramen emittendi. Ut workpiece movet, parva foramen synchrone in sectione versus ad formandum incisus movet. Trabes laser per primam partem incisionis pergit, et materia fusilis ab incisio modo continuo vel pulsante eliditur. Laser liquatio secans plenam vaporizationem metalli non requirit, et vis requiritur tantum 1/10 incisionis vaporizationis. Laser liquatio incisio maxime adhibetur ad secandas aliquas materias quae metalla oxidized vel activa non sunt facile, ut chalybem immaculatum, titanium, aluminium earumque mixturas.

 

(3) Oxidationis fluxum secans;

The principle is similar to oxygen-acetylene cutting. It uses laser as preheating heat source and oxygen or other active gas as cutting gas. Ex altera parte, gas inflatum reactionem oxidationis cum metallo secante patitur et magnam vim oxidationis caloris emittit; on the other hand, the molten oxide and melt are blown out of the reaction zone to form a cut in the metal. Cum oxidatio reactio in processu sectionis magnam vim caloris generat, vis incisionis laseris requisita est tantum 1/2 illius incisionis liquefactionis, et celeritas secantis multo maior quamvaporem laser secans et liquescens secans.

 

(IV) Fractura dispensata secans

For brittle materials that are easily damaged by heat, a high-energy-density laser beam is used to scan the surface of the brittle material to evaporate a small groove when the material is heated, and then a certain pressure is applied to perform high- velocitas moderatior secans per laser calefactionem. Materia per striatus parvas dividet. Principium processus secantis huius est quod laser trabes localem aream localem calefacit|materia fragilis, faciens magnas clivosas thermas et graves mechanicas deformationes in area, ducens ad formationem rimas in materia. Quamdiu calefactio uniformis gradientis conservatur, laser trabes crepitum creationis et propagationis in quamlibet partem desideratam dirigere potest. Fractura moderata utitur praecipiti temperaturae distributione in laser notificatione generandi accentus locales in fragili materia ad materiam frangendam. per striatus. It should be noted that this controlled break cutting is not suitable for cutting sharp corners and corner seams. Cutting extra large closed shapes is also not easy to achieve successfully. Celeritas fracturae incisio moderata celeris est et altiorem potentiam non requirit, alioquin superficies operis tabescere faciet et extremam commissurae secantis laedat. The main control parameters are laser power and spot size.