Laser cladding

Laser Cladding
Is a welding technique used for adding one material to the surface of another in a controlled manner.
As the laser beam is scanned across the workpiece, it heats the target surface and melts it locally. Simultaneously, a stream of metallic powder is fed into the laser beam and added to the melting pool. The powder melts on the heated spot and binds with the work piece metal, leaving behind a deposited coating.

Advantages:
• Strong metallurgical bond between the substrate and deposited layer.
• Minimal heat input results in narrow heat affected zone so limited stress and distortion in the workpiece, limited need for corrective machining and the material properties are maintained.
• High density of the deposited layer and little or no porosity.
• Short cycle time resulting in short lead time and a competitive cost.
• A very wide choice of different materials can be both deposited and deposited onto.
• Possibility to improve the workpiece properties (e.g. wear resistance) by the choice of the deposited material.
• Additional material can be placed precisely where desired
• Easy to automate and integrate into CAD/CAM and CNC production environments

Applications:
• The repair of worn out parts (bearings, shafts, bores, pump houses, barrels, fans, impellers, turbines, molds) with a short lead time, with a quality equal to or better than the original and often at the fraction of the cost for a new part.
• Deposition of wear resistant layers in order to increase the lifetime of the part.
• Correction or modification of workpieces which are under dimensioned