SWS-Trimac, Inc. | Laser Welding Services
SWS-Trimac provides Laser Welding services for a wide range of industries such as Automotive, Medical, Aerospace and Commercial. SWS-Trimac offers many options in Laser Welding technologies, capable of welding thicknesses ranging from foil to 3/8” of an inch in Carbon Steels, Stainless Steels and Aluminum just to name a few.
Laser Welding processes generate light energy that can be absorbed into materials and converted to heat energy. By employing a light beam in the infrared electromagnetic spectrum, we can transmit this energy from its source to the work piece using an array of delivery optics, which can focus and direct the energy to a very small beam spot. The typical spot size of the laser is approximately .012” in diameter. The focal point can be adjusted above or below focus; these techniques will affect both weld penetration and width of the weld signature, which is very important depending upon joint design and application. The speed of welding is proportional to the amount of power supplied but also depends on the material type and thickness of the work pieces. Laser Welding may be used in a continuous or pulsed mode depending upon the type of Laser Welding technology.
SWS-Trimac offers the latest in Solid State Laser Welding utilizing Disk Laser / Nd:YAG welding technologies. These Laser Welding technologies emit a beam of light through a fiber optic cable to a welding head that collimates and focuses the beam to a .008” spot size. These Laser Welding technologies offer a pulsed mode typically used in thin thickness while continuous beam if often used for deeper cross sectional thicknesses and remains the most common mode of Laser Welding.
SWS-Trimac also offers high power CO2 Laser welding. This is the most popular Laser welding technology offering an array of possibilities and most widely used by the Automotive Industry. The Laser beam as delivered is reflected off a series of mirrors and ultimately collimated and focused to a .015” beam spot at the weld surface. Laser Welding with CO2 technologies requires the use of a shielding gas to protect the weld area from atmospheric gases. SWS-Trimac has over two decades experience welding with this technology.
Laser Welding vs. Electron Beam Welding
Some of the advantages of Laser Welding in comparison to Electron Beam are that Laser welds may be welded in air rather than requiring a vacuum, increasing cycle times typically resulting in lower costs of welding. Additionally there are fewer constraints with Laser Welding with the absence of a vacuum chamber and offers work envelopes with greater flexibility over Electron Beam.
Electron Beam welding however offers purer welding conditions based upon the vacuum environment eliminating contaminates typically found while welding in atmosphere. Electron Beam welding typically offers less heat inputs resulting in less distortion and greater depth to width ratios than any other process. Electron Beam is most often the first choice of the Aviation, Aerospace and Defense markets or any application that demands the highest quality of weld.