Repair of Decanter Centrifuge Components

Centrifuges are commonly used in medical, manufacturing and waste processing fields. They use a process that accelerates heterogeneous mixtures into components based on different densities. Density compares the amount of matter an object has to its relative volume. When one solution has a higher density than the solvent the particles will sink to the bottom. In comparison if the solution has a lower density than the solvent the particles will float to the top. Centrifuges have a motor that spins samples at high speeds to separate the particles.

While maintenance is important in aiding machines to work to the fullest potential, they are still prone to overall wear. This can stem from abrasive particles that can cause wear on the internal components. These particles can erode the surfaces of the bowl, conveyor and other components. Wear can arise from stress of the machine from continuous cycling operation. Internal components such as bearings, seals and drive systems may experience this due to the repetitive nature involved. Misalignments and imbalances from the premature wear of an internal component can cause mechanical vibrations to further cause internal wear especially on bearing journals.  Displacement during the mechanical vibration or the premature wear of the components. Lastly, overloading a centrifuge with excessive speed or conditions can reduce the equipment’s lifespan. To fix the wear of decanter centrifuges there is an option to replace the expensive equipment or remanufacture it back to its original shape and size. Laser Cladding offers the ability for equipment remanufacturing and repair which leads to savings in cost, sustainable environment, shorter lead times and enhancing supply chain resilience.

Laser cladding is a welding technique that utilizes laser energy to melt powder material onto a surface creating a metallurgical bond. The metal deposit applied in this method demonstrates a strong metallurgical bond, minimal porosity (less than 0.1 %) and other defects. As a result, compared to conventional coating techniques such as thermal spray and hard chrome, laser clad deposits do not chip or delaminate even at thicknesses exceeding 1/8” (3.175mm).

Laser Cladding offers control over the deposition of material based on the precision of the laser beam. It generates a smaller heat affected zone compared to traditional welding. This implies a greater metallurgical and dimensional integrity of the component not to mention minimal cleanup required for the weld. Based on the component and its functionality, Synergy tailors the welding material to match the customers’ requirements. The hardness of materials ranges from 20 HRC to 55 HRC. Typical weld materials range from Austenite Stainless Steels such as SS 304, SS 316, 18/8 SS to high temperature corrosion resistant alloys such as Inconel 625.


In conclusion, Laser Cladding for decanter centrifuges at Synergy is an attractive choice when quality, durability and lead times are critical for repair.

Please contact us here at to learn more or receive a quote on your manufacturing needs for high quality repair of critical components.