How does laser marking metal work?

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Laser marking places lasting marks on metal with a focused light beam. This can be done in several ways: annealing, engraving along with etching. Annealing heats the metal surface to alter its color, often to black, without harming the surface. This approach is common for iron-based metals and titanium. Laser engraving takes away material from the surface to make a dent that becomes the mark. This works by vaporizing the metal, which can change its color because it reacts with air. Etching resembles engraving but usually makes a mark that is not as deep. It is often used to quickly make marks with strong contrast. Laser marking is a process that does not touch the metal, which makes it precise plus efficient. Many industries such as car making, airplane building as well as medicine, use it to mark parts with numbers, logos or barcodes. The method is very accurate, fast along with adaptable making it better than older methods like stamping or traditional engraving.

Q. How does laser marking metal work?

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