Laser Marking & Laser Engraving
Add the finishing touch to your parts and components with Arrow Cryogenics’ permanent green, YAG, or UV laser part marking and laser part engraving services. Request a quote today, contact Arrow Cryogenics to learn more, or watch our video to see what our laser marking services can do for you.
Why Use Laser Marking or Laser Engraving?
Compared to marking products with ink, laser marking is much more precise and environmentally friendly, requires no drying time, and is 100% permanent. Laser marking and laser engraving are commonly used for a diverse array of applications, including:
- Product identification
- Product traceability
- Protecting products from unauthorized imitation
- Better legibility
- Long term durability
- Resistance to high temperature sterilization
- Providing functional information for components
How Does Laser Marking Work?
The lasers used in laser marking and engraving are distinguished by the characteristic wavelengths of the respective laser type (see below) and the power density required. The laser beam is focused on the material to be marked, and immediately reacts with the surface of the material. The effects of the laser beam depend on its wavelength, the contact time between the beam and the workpiece, and the type of material being marked.
Laser Part Marking for 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 have three different laser marking systems available to meet your laser marking and laser engraving needs.
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 (ultraviolet) lasers produce shorter wavelengths (355nm), making them especially useful for 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.
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, this process can permanently mark components that are difficult or impossible to reliably mark through other methods.
Arrow Cryogenics' Laser Part Marking Services
- 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. With no bid heads to replace, laser etching offers a considerable advantage over other engraving techniques.
- 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 removed 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.
Watch the video above for examples of many of these laser marking processes.