LASER is the mechanism for emitting electromagnetic radiation, in the form of light or visible light, through the stimulated emission process. Laser is the acronym for Stimulated Radiation Emission of Light. The growing number of industries and the competition between them will always force the introduction of the latest technologies, leading to the introduction of laser systems for many industrial applications, including cutting, marking, stamping, engraving and engraving. The main difference between marking systems Laser and other forms of marking is the unique combination of speed, permanence and flexibility of computer control. The software used for the laser marking system is accessible through a PCI interface card.
This sends the digital signals from the computer to mark or record files to the motors and directs the laser beam to the laser marked product. The lasers used for marking are CO2 lasers – this will create permanent codes for lifetime traceability, this will reduce manufacturing costs and can be easily integrated with automated systems. Excimer Lasers: Available in the following wavelengths of the UV laser: 157 nm, 193 nm, 248 nm, 308 nm and 351 nm. It is mainly applied for inkjet nozzle drilling, marking glass, etc. YAG Lasers: They are most often used as the basic platform to produce different wavelengths when properly configured. The most versatile wavelength is infrared (1064 nm). This wavelength is used to mark a variety of materials, including metals, ceramics, composites and certain plastics. The different types of processes involved in laser marking systems are as follows: Surface annealing Surface annealing will attract carbon and / or oxides from the base material to obtain a contrast mark. The marking beam will produce a strong line of contrast with the surrounding area with little or no penetration. This is great for applications where a smooth, undamaged surface and contrast is needed.
Surface annealing is mainly used for medical implantation, bearings, tools, etc. Surface Engraving Surface engraving is the ability to modify reflectivity and improve the contrast of metals by modifying the surface finish of metals. This is one of the most widely used laser marking techniques, whose penetration depth generally does not exceed 0.0001 “deep. Thermal Marking This method works by controlling heat using different laser parameters such as marking speed, pulse rate, power and focus. to certain alloys, which causes color variations.
Engraving Marking In this method, the required vapor is produced by vaporizing the base material. This form of marking is identical to that of the surface engraving; is generally used for a depth of 0.0001 “to 0.005”. Repeated passes will increase brand depth. Specialized marking The specialized marking system is commonly used in plastics. Some plastics can produce a contrast of heat or coupling with a wavelength that causes a chemical change. Additives can also be used with most plastics to achieve different colors. An example of special branding is product traceability, which is the ability of a manufacturer to track a product through its processing procedures and also has the ability to track a product to the manufacturer.