Laser Engraving, Marking And Etching: An Overview Of Associated Aspects

 

The word Laser is an abbreviation which marks the process that is carried out by using a highly focused beam of light that is created by the stimulated emission, which is amplified to the desired extent where in the beam thus generated will leave a mark on the surface of a material. When this highly focussed beam gets in contact with the material’s surface, it changes the material’s physical property and appearance.

While this focussed beam aims at a specific area, a precise, contrasted mark is formed. Laser marking process makes it ideal for material surfaces which require accuracy and permanency. With the advancement of science and technology, the recent technically progressive cutting-edge fiber laser technology has been on the trend, belonging to the solid-state lasers category, they have a shorter wavelength due to which a smaller focal diameter beam is created or formed the point of impact on the material surface. In this case the intensity is many folds greater than the carbon di oxide laser technology. Owing to the high power beam and a considerably smaller wavelength, they are almost maintenance-free providing a service life of about 25000 hours.

Another category of lasers, the crystal lasers, too have their place in the same class, as of the solid state laser systems. In this type the diodes generate crystal laser beams, essentials present in these diodes are usually carrier crystals of neodymium. Even in this case the wavelength is quite convenient to mark on metals and plastics as well. But the main difference in this crystal lasers are the deterioration of the diodes over a period of time, rendering it not 100% maintenance free but requires some maintenance of the system, mainly the replacement of diodes.

These crystal lasers are efficient on coated metals, with an extended performance on other metals too. As mentioned crystal lasers can be used to mark and engrave on plastics, ceramics and other delicate and fragile material surfaces also. The topic of laser engraving and marking goes never ending, likewise the applications of these systems also is quite wide ranged. Lasers and its applications are applied in almost all the products ranging from an automobile spare part to laser printing on packing materials like wrappers, boxes and other similar containers.

Automobile engines and other critical parts are laser etched or laser marked or laser engraved for their unique and authentic engine and chassis numbers. These markings are permanent and deep so that they cannot be tampered easily. Organizations like Signvec, in Singapore manufacture, service and supply laser marking machine of supreme quality and performance. Specifically specialised in laser rotary engraving machine, laser cutting and laser marking machines, the organization delivers products ranging from the high end to the affordable range.

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