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Laser cutting technology from Bylaser

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article image Laser cutting technology from Bylaser

Bylaser offers laser cutting services applied to a large variety of materials.

The laser used produces electromagnetic waves of the same nature as light waves, radio waves and X-rays. The characteristics exhibited by laser are not present in any other natural or man-made radiation available at present.

One of the main characteristics of laser light is coherence: the coincidence of phases both in time- in which case we speak of monofrequency or monochromaticity -, and in space - in which case it is possible to obtain extremely concentrated light beams even for paths kilometres long or to focalize the beams or make them diverge in an extremely controlled manner.

The difference between sunlight or normal incandescent light used for domestic illumination and laser light is that the sun or the lamp emit radiation or quanta in a random fashion, like people leaving a stadium or cinema, while the laser emits extremely orderly quanta of energy, like a platoon of soldiers or robots, all exactly alike, that march perfectly aligned in rows and columns.

Laser can be applied to the cutting of a large number of materials:

  • Non-metal materials possess very good characteristics of absorption of the infra-red light energy typical of CO2 lasers and are also generally poor conductors of heat and have low vaporization temperatures.
  • Most metals possess good cutting characteristics. Because of the great possibilities of focalization, reaching specific powers of a million Watts per cm2, the incident laser beam causes superficial fusion and, therefore, triggers the cutting process in nearly all metals, in spite of the high levels of surface reflectivity. 
  • Paper materials, leather, and natural and synthetic fabrics can be cut easily with a low-power laser. In the fashion industry, for instance, the use of laser cutting allows faster and more flexible production of articles of clothing of every size and shape.
  • Laser is commonly used  to cut plastic materials, particularly because of its ability to cut complex forms at high speed and because it does not apply stress or distort the piece. Furthermore, it produces a clean cut with smooth edges on hermoplastic materials as well as  with polyesters and polycarbonates, even if, at times, for a few polymers, a thin layer of carbon elements can be found at the cut edge.
  • Conventional steel types have a considerably reduced (or practically non-existent) heat altered zone (HAZ) compared to plasma cutting systems.
  • Glass has high levels of microfissures and is, therefore, less suitable for this type of cutting, with the exception of relatively thin borosilicates which can be cut with a pulsed source.
  • Both natural and synthetic rubber of thickness up to 20 mm can be cut with a mid-power CO2 laser although proper exhaust system is recommend it.
  • Woodcutting is an excellent application for the high precision of laser machines. In particular, for dye cutting, the cutting system produces exact and uniform cut edges along the entire length of the worked surface.

  • Laser is the ideal cutting method for stainless steel sheets. The high degree of accuracy and heat control prohibit extent of the heat altered zone from the cutting groove, allowing the material to maintain its characteristics of stainlessness and resistance to corrosion.

  • The laser used produces electromagnetic waves of the same nature as light waves, radio waves and X-rays. However, the characteristics exhibited by laser are not present in any other natural or man-made radiation available at present.

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