Processes

Laser Welding and Advantages

Laser Welding and Advantages

Laser welding uses an intense energy beam as its heat source. Different types of lasers can be used, depending on the material and application.

Altair Technologies routinely uses its laser welder to perform special welds in the construction of its electron guns as well as the assembly of relatively delicate components for its customers. Unlike TIG welding, laser welding results in low heat generation with little or no distortion or resulting stress.  Filler material is rarely used and therefore laser welds are less bulky and more precise than other types of welds.  In some cases, laser brazing is employed, where a minute amount of filler metal or braze alloy maybe placed between adjoining components to improve weld compatibility or weldability.

Any weld compatible metals can be laser welded and we commonly laser welded parts are made from Titanium, Nickel, Stainless Steel, Platinum, Kovar and Moly.

Laser welding is performed in an inert gas atmosphere using either Argon or Helium and can provide spot, stitch and continuous hermetic (vacuum tight) welds in both pulsed and continuous operation modes 

Laser welding is accomplished at very high speeds Laser welds are also very repeatable because they eliminate any possible element of human error. No physical materials, such as electrodes or contacts, are needed to apply heat to the part.

With their well defined beams, lasers are excellent tools for welding thin materials, hermetic welds or welding in close proximity to heat-sensitive components. Even hard to reach areas can be laser welded if a line-of-sight exists.


Contact our sales team to learn more about laser welding: Sales@altairusa.com.


Laser Advantages

  • Very high precision welding or cutting
  • Close tolerance (± .001 inch)
  • Excellent repeatability
  • Unit cost reductions
  • Material versatility
  • Contact-free, very localized energy means low thermal and mechanical strain on parts
  • Cleaner than electric arc or gas welding
  • No consumables, unless filler material is used for welding
  • Low heat input/minimal heat affect
  • Fine grain structure/excellent weld quality
  • High energy density/high weld speeds
  • No filler material
  • Line of sight access for hard to reach areas
  • Clean processing to eliminate debris (shavings, dust, etc.)
  • Flexibility - fast setups achieved with computer controls
  • Little or no burring can make secondary finishing unnecessary
  • 90% less heat input results in welds with minimal distortion
  • Minimal distortion in heat affected zones
  • No tooling to wear out or change over
  • Non-contact processing eliminates unwanted stress on materials

TESTIMONIALS

"I've done business with Altair on two different projects that consisted of customized cooling plates for a high power laser system. The parts were very nicely made and have performed nicely. I went back to them afterwards for a much larger and more advanced version of this design which also turned out very nicely. Very nice people."

-Richard Hayes
Engineer
Textron Defense Systems

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