Laser Marking Systems

What Is Laser Marking?

Laser marking uses a beam of low power light to create markings on an object. The low power light is slowly moved across the object where it creates discoloration of a high contrast in the material of the object. Despite becoming discolored, the material of the object remains unaffected. This means that the properties and structure of the object's materials remain intact and are unaffected by the markings. No portion of the surface is melted or vaporized as in laser etching or engraving. Marks are formed during laser marking by causing oxidation beneath the surface of an item. The area above the oxidation then turns black and the marks are formed which are easily visible.

What Are Laser Marking Systems Used For?

The primary reason why laser marking systems are used is for part identification and quality assurance purposes. Many industries require that manufactures mark their parts or equipment with serial numbers or unique codes for quality assurance and traceability. The automotive industry marks cars and truck parts. Medical device manufactures often create serial numbers for their parts in case problems occur or troubleshooting is required. Laser marking systems are used to create bar codes, unique identification codes, serial numbers and QR codes on a wide array of items. Even logos and other images can be made on a item with a laser marking system.

The Different Kinds Of Laser Marking Systems

There are many different kinds of laser marking systems. All perform the basic function of marking an item by causing discoloration through a low power beam directed at an object. The main differences between laser marking systems is their size capacity, wattage and special features. Typically the larger the laser marking system, the more features it will have and the larger the part it can mark accurately.