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Laser Deposit Welding with Powder

High Quality Coating with Metallic Powders

Wear protection and repair layers can be generated by laser deposition from metallic powder locally and by minimizing the heat load to the work piece. The powder is fed into the melting zone on the surface of the work piece by using a carrier gas. This results in a non-porous layer with little distortion. Even with moderate power densities layers with a thickness of 0.5 to 1 mm and a width of up to a few millimeters can be deposited at a speed of several 100 mm/min. Thicker layers and wider paths can be generated by scanning several layers one upon the other and in parallel ways.

Due to the better absorption of the laser beam on metal surfaces and in powder particles at shorter wavelengths, lasers with a wavelength range of 1 µm (mostly solid state lasers) are usually more efficient and more cost-effective for powder cladding than CO2 lasers. Especially high power diode lasers are ideal for these requirements, as they are providing an optimal wavelength (800 – 1000 µm) and a high efficiency but a small size.


Cladding of Drill Bits

Cladding of Drill Bits

After cladding with the appropriate powder additive e.g. Stellite® or Inconel®, the workpiece becomes extremely robust and resistant. As well as drill bits, the lifetime of cutting tools can be extended with the help of laser cladding.

For this application we recommend: Fiber lasers of the HighLight FL Series

Deposit Welding with Powder: Downhole Tools in Oil & Gas Industry

Deposit Welding with Powder: Downhole Tools in Oil & Gas Industry

The powder layers, which are applied during the laser cladding process, protect steel, alloy and other metal parts against wear, erosion, corrosion and chemicals. Additionally, the resistance of pumps and valves is improved by laser deposit welding.

For this application we recommend: Diode laser HighLight DL6000HP