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Laser hardening

Laser hardening is a method aimed at improving component wear behavior.

During laser hardening, also known as surface layer hardening, the energy from the laser beam is applied directly to the component surface. The surface layer is heated up to the hardening temperature (>1000°C) in a reduced area within a very short period of time.

One advantage of using a laser is that the amount of heat input is comparatively low, so heat is transmitted into the base material relatively quickly. Self-quenching is produced as a martensitic structure is formed and the hardening layer is ‘cooled.’

A very tough, fine-grained structure is created thanks to the high heat-up rate during laser hardening. The risk of cracks forming is very low thanks to self-quenching. The precisely focused energy ensures that the component is subject to a comparatively low impact from heat, bringing a great advantage in minimum quench distortion.

The advantages of laser hardening in brief:

  • Precise energy input with minimum heat effect
  • Low distortion, so little to no finishing work required
  • Less hardness stress
  • Low risk of cracking
  • No media required for quenching

We also have expertise and technology based on many years’ experience in this field. Our Laser System Technology Division produces special optics for laser hardening of interior surfaces, for example, which we use.

Laser Cladding

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Laser Hardening

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Multi Axis Laser Welding &nonlinear laser welding

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