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Escuela y Educador de Soldadura

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MANUAL OR AUTOMATIC LASER WELDING


Easy welding technology, fast return of investment, affordable equipment.

Our first steps in manual laser welding. A simple technology for welding and sealing of materials, from 0.5 mm or even thinner, and also for thicker material joining applications. To be used in metal fabrication, ventilation and conditioning, manufacture of metalic components,…
For sure many companies are going to benefit from laser welding technology, now at affordable cost of investment and very fast and easy return with faster and higher quality production.

Applications include repair of components that weld precision, minimum deformation and thermal affectation of the welded area are required.

Some examples of the results we obtain in welding on different applications:

Soldadura automatizada
Acabado perfecto
Uniones difíciles
Sin afectación térmica
Importancia Gap

Advantages of Laser Welding (LW) process:

  • Minimum thermal affectation (heat input) of the welded area:
    • It is possible to weld even very thin metals, with almost no deformation of the welded component
    • The HAZ (Heat Affected Zone) in minimum, and so the problems related to the metallurgical transformations of this area.
    • Hazards associated to heat are also minimized.
  • Fast Welding
  • High skill TIG welders are not required to execute perfect welds
  • Filler metal is not required, excepting in some applications where gap need to be covered or in surfacing or repairing applications
  • It is possible to weld on finished surfaces, even bright stainless steel, or galvanized steel, because there is no burning of the area next to the weld bead. If needed, the weld bead can be polished (see limitation)
  • Cost of equipment has become affordable and very fast investment return, thanks to the clear advantages of the process.
  • We offer a wide range of equipment. The choice will depend on the right technology (Pulsed-YAG or Fiber) and power. Capable of welding material thickness up to 3 or 4 mm for full joint penetration or thicker materials when partial penetration or fillet or lap welds are required.
  • The welding torch can be used manually or can also be easily automated.
  • Safe welding, the right safety glasses with appropriate wave length filter is required. Heat associated hazards are almost not existing. No spattering. Minimum smoke production.

Limitations of the Laser Welding – LW process:

  • It is required that the edges of the components to be joined have perfect cut, so there is no gap in the butt type of joint. In other joint configurations (corner or lap), if there is a gap, it will be needed to fill consumable rod or wire, and this can reduce welding speed:
    • The image shows a fillet weld on stainless steel: the weld bead is perfect inside and outside the corner joint, since gap was zero (0) in the full weld length. Due to bad finish of the cut edges, it is not possible to close the joint, so in the areas where there is some gap, it is not possible to weld, since there is no filler metal and the laser goes through the separated edges.
  • In the joining applications no filler metal is required. This means that weld is autogeneous, this means that the edges of the metals act as filler of the joint and conform the weld bead.
    • This mean that the weld size (thickness of the weld bead) can result being slightly smaller than the thickness of the base metals we joint, of we observe a bit of “underfill”.
    • For fatigue of dynamic forces applications, we must consider the actual thickness and the “underfill” profile when calculating or testing the life of the welded components.
    • If polishing is required also for the weld, the actual thickness of the weld bead needs to be considered.
    • In some cyclic or dynamic applications, the threshold fatigue life may be required to be tested. The weld profile having underfill may have a “notch” effect due to the undercut next to the welds.

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