Laser Heat Treatment

The laser heat treatment service offered by APEX ETG provides you with an efficient and cost-effective solution for surface hardening. The advantage of APEX ETG’s diode laser heat-treating service is the high processing speed with precise case depths resulting in negligible distortion and enhanced resistance to wear, fatigue and corrosion.

The use of the laser surface transformation heating method creates the optimal conditions for achieving excellent results. The laser heat treating process utilises a series of high precision lasers to harden specific areas on various parts while maintaining desirable dimensional tolerances and surface finish. Our high power laser has an output wave-length of 975 nm, is highly absorptive and requires no pre-coating of the work piece to achieve absorption.

This unique process is ideal for parts that require an ultra-precise case depth and limited distortion, without compromising on part/tool performance and quality. The process is inherently a LEAN (single piece flow) process with high processing speed, precision heating control, as well as being highly flexible, easily handling most work piece shapes and geometries.

With an extensive range of materials available, our diode laser heat-treating process will add value to your business!

Contact us to find out more.

Application examples for laser heat treatment

  • Carbon alloy steels and cast irons
  • Bearing surfaces
  • Cutting surfaces
  • Pumps
  • Valve seat and seal surfaces
  • Drive train components
  • Gears, pulleys and cams
  • Hand tools, needles and pins
  • Forming tools
  • Stamping dies
  • Turbine blades
  • Powder metal parts

Benefits of laser heat treatment

  • Selective hardening both is depth and location
  • Low or negligible distortion
  • No post processing is required
  • Precision heating and control
  • Highly directional heating via line of site heat treating
  • Process speeds typically 3 times the rate of induction
  • Environmentally friendly dry process requiring no quench oil or fluids
  • Process does not require absorbent coatings
  • Process very forgiving with respect to surface contaminants
  • Work piece shape geometry not an issue
  • Higher hardness achievable — over HRC 60 without cracking
  • Fatigue life improvement for powder metal parts and drive train components
  • Quality processing achievable with in situ temperature control

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