Deposition techniques
Consistent results with laser cladding
Laser cladding is a technique that bonds alloys to the surface with a low degree of dilution. It is particularly suited for use in automated high-volume applications.
With laser cladding, which is also known as laser metal deposition, metal powder is fed into a melt pool generated by a laser beam. The melted material is deposited accurately and with minimal heat to the underlying substrate.
Laser cladding enables a metallurgical bonding with the base material substrate, like in case of PTA surface welding. The overlays can be applied to most Fe and Ni based substrates with some exceptions.
A high-energy laser beam creates an intense heat input and thus alloys are bonded to the surface with a low degree of dilution (<5%). Laser cladding can be fully automated and once the parameters are fixed for a certain design, the final results are consistent for all parts.
The laser cladding process is used to improve wear resistance and to repair worn or damaged surfaces. It is a flexible process since it is possible to mix two or more powders at the same time as the feed rate is separately controlled for both feed streams.
Typical working range
- Deposition rate: up to 8 kg/hour
- Deposition thickness: 0.5 - >4 mm
- Deposition hardness: up to 68 HRC
Benefits
- Suitable for automation
- No fusing required
- 0.5->4 mm thickness
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