LASER MARKING & LASER ENGRAVING
Add the finishing touch with permanent Green, YAG or UV laser part marking and laser part engraving from Arrow Cryogenics
Why Laser Marking/Laser Engraving?
Manufacturers are increasingly using laser marking and laser engraving for a diverse array of applications, including:
- Product identification
- Product traceability
- Protection of product from imitation
- Better legibility
- Long term durability
- Resistance to high temperature sterilization
- Bio-compatibility with base material
- Providing functional information for components
Compared to marking products with ink, laser marking is much more precise and environmentally friendly, and requires no drying time.
Laser part marking works on virtually any material.
Arrow Cryogenics' state-of-the-art, high-speed, non-contact laser marking systems provide superior results on nearly any material you need marked. We currently use YAG, UV, and green laser marking equipment.
YAG Lasers: YAG (yttrium aluminum garnet) lasers are one of the most common types of solid-state laser, and are used for myriad applications. The laser we use for YAG laser marking produces a 1064nm wavelength, making it ideal for absorption by most metals and some plastics. In addition to laser marking and similar manufacturing purposes, YAG lasers are often used for medical procedures, such as cataract surgery.
UV Lasers: UV (ultraviolet) lasers produce shorter wavelengths-355nm for our UV laser marking equipment-making them especially useful for many industrial processes. UV lasers are used for various non-thermal ("cold") processes, including surface color changes (see below). Like YAG lasers, UV lasers are commonly used for medical procedures, including dentistry and ophthalmology.
Green Lasers: Our green laser marking equipment produces a 532nm wavelength, visible beam. It is specially designed for high speed laser marking and etching on plastics and metals. Its small, focused beam is ideal for precision marking on even the smallest workpieces.
With three different types of laser part marking equipment, we can mark or engrave nearly any material. From laser marking steel to laser marking plastic, the laser process can mark components that are too difficult or impossible to mark through other methods.
How does laser marking work?
Laser marking light is distinguished by a characteristic wavelength for the respective laser type and the power density. The laser beam is focused on the material to be marked, and the beam reacts with the surface of the material. The effects of the laser beam will depend on its wavelength, the interaction time of the beam with the material, and the type of material being marked.
Arrow Cryogenics' laser part marking processes include:
Laser Part Engraving/Laser Part Etching: Laser engraving can be used on a broad range of materials including polymers, stainless steel, titanium, aluminum, and other metal alloys. The high power of the laser evaporates the material during the process, resulting in an engraved surface. Oxides sometimes form in engraved areas, making the marks clearer and more visible. Laser engraving does not involve tool bits, which are in contact with material surfaces and eventually wear out. Laser etching is considered an advantage over other engraving technologies, as there are no bit heads to replace.
Laser Annealing: The surface of the material is locally heated to form a very thin oxide layer. Different colors can be created depending on the power that is applied.
Material Removal: Coated materials can be marked by removing the top layer with a laser. Anodizing on aluminum is often removed to produce a clear, clean mark.
Change in Color or Bleaching: This process is most commonly performed on plastics. The structure of the individual molecules or additives, such as color pigments, are directly changed or destroyed through laser marking. A change in color or bleaching is then visible on the material, creating a marking.
Foaming: Foaming is only possible on certain plastics. The laser melts the plastic locally, creating gas bubbles in the material. As it cools, these gas bubbles are encapsulated in the material. A raised surface is then formed, creating the marking.
Laser marking/laser engraving is just one of the services we offer. Along with having your components marked at Arrow Cryogenics, ask about our ultrasonic cleaning, stainless steel passivation, shot blasting, and other services.