Area of expertise

KJ Laser Micromachining is your first place in laser precision and micro welding in North America and Canada. Our expertise covers a wide range of laser joining technologies, including joint design, weldability of materials, inert gas shielding and plasma control. Our experience in materials science and laser-material interaction permits a precise control of laser pulse duration, pulse shape and energy to produce sound seam and spot welds, which are free of distortion, micro cracks and porosities. The laser weld penetration depth is in the range of 0.5 mm to 2 mm (0.020 – 0.080”). Dissimilar materials such as steel to copper or aluminium can be joined without using filler materials.

Our laser welding services also include laser hermetic welding, laser tube welding with rotary chucks, laser welding of dissimilar materials and laser transmission welding of thermo plastics. In the near future, KJ Laser Micromachining will also provide metallographic cross section analysis of weld microstructure and geometry.

Welding techniques

  • Laser spot welding as a more cost-effective alternative to resistant welding
  • Laser seam welding with a CNC multi axis motion system
  • Laser welding with filler materials to improve weldability and to compensate for imperfect fitup (gap bridging)
  • Welding of dissimilar materials
  • Laser deposition welding for parts repair or modification (laser cladding)
  • Hybrid welding with the combination of arc preheating and laser welding
  • Simultaneous and mask transmission welding of plastics with high power diode lasers
  • Remote welding with high power lasers and scanner optics
  • SHADOW welding (Stepless High speed Accurate and Discrete One pulse Welding) using a single pulse to generate a quasi-continuous weld of several milimeters in length
  • Globo welding using an air-supported glass sphere as a dynamic clamping device for 3D and large scale plastic welding applications

Materials

Among others, steel, titanium, highly reflective and conductive metals (aluminium, copper and their alloys), high melting point metals (molybdenum, tungsten or tantalum) and thermoplastic materials can be laser welded. Thin metal foils down to 0.002” (50 µm) can be fused to solid parts with no burn through.

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