What is Laser Cladding Technology Process ?TDB Machining
Laser Cladding or Laser Deposition is a processing technique used for adding one material to the surface of another in a controlled manner.
A stream of a desired metallic powder is fed into a focused laser beam as it is scanned across the target surface, leaving behind a deposited coating of the chosen material.
This enables the applied material to be deposited selectively, accurately and with minimal heat input just where it is required.
- Additional material can be placed precisely where desired.
- A very wide choice of different materials can be both deposited and deposited onto.
- Deposits are fully fused to the substrate with little or no porosity.
- Minimal heat input results in narrow HAZ (heat affected zone).
- Minimal heat input also results in limited distortion of the substrate and reduces the need for additional corrective machining.
- Easy to automate and integrate into CAD/CAM and CNC production environments.
Diameter: Up to 1000mm
Length: Up to 9000mm
Weight: Up to 3000kg
Flat parts can also be accommodated
Deposit Thickness: 0.5mm to 2mm per layer
Multiple layers can be deposited with certain materials.
With a large number of materials processed on a daily basis, Laser Cladding Technology is always looking to decrease overall costs and increase component life. Our contribution to this industry has been to provide customers with coating solutions tailored to suit their individual needs.
Industries to have benefited from using laser cladding include:
- Oil and Gas
- Pumps and Valves
- Materials Processing
- Mining and Tunnelling
- Power Generation / Renewables
- Refractory Processing
- Fibre Glass Production
- Pulp and Paper Production
- Wood Processing
- Cement Production
Popular materials deposited are:
Technogenia’s patented Technolase® Tungsten Carbide Hardfacing Powders
Ni/Cr Matrix powders containing Spherotene® Tungsten Carbide
Various weight fractions of Spherotene® available within these powders.
Standard grade: Technolase®40s-400 (60% Spherotene®/ 40% Mtrix)
Hardfacing Alloy Powders
Nickel Based Powders
Steel Based Powders
316 stainless steel
Hoganas Rockit 401 (Hard Chrome Replacement)
Manufactured since 1986 by Technogenia using a patented Technique known as cold crucible electromagnetic levitation, this unique and innovative Tungsten carbide goes by the trade name of “Spherotene®”.
Its main feature is its very fine metallurgical structure known as “tangled needles”.
Sphérotène® consists of spherical particles of extreme hardness : 3000VH ± 500.
The exceptionally clean surface of Sphérotène® makes the derived products highly weldable. The spherical shaped particles of Sphérotène® have the advantage of giving maximum compactness. This means that the mean free path between the spheres in the weld deposit is minimal. Therefore, erosion of the softer matrix is minimized.
These particles give deposits a much improved resistance to impact, compared to deposits made up of crushed particles. The round particles allow stress to pass smoothly through the deposit, whereas sharp corners tend to concentrate stress and lead to cracking.
Grains of crushed carbide subjected to repeated shocks may contribute to and lead to cracking through the “corner effect”. A Sphérotène® deposit is not subject to the “corner effect”.
Sphérotène® comes in grain sizes ranging from 40 µ to 2400 µ.
It is used for the various welding products offered by Laser Cladding Technology and Technogénia.