Thorough cleaning – precise post-treatment
After casting, we perform several post-treatment processes. We clean the unfinished cast component, smoothen out any uneven surface areas and enhance the material properties by annealing and quenching.
First of all, directly after unmoulding, the cast components are sand-blasted to remove all moulding sand and core sand. The gating, which serves to pour the liquid metal into the mould, is separated and the contact area is ground. We further remove the feeder, which is a reservoir filled with liquid metal that compensates shrinkages during the solidification process.
For nodular cast iron and high-quality materials we then perform an annealing process. After the components have been cleaned and surface-treated in the blasting chambers, we heat them up in gas-fired furnaces reaching temperatures of up to 1050°C. This ensures that the material properties of the complete casting geometry are consistent. Next, the components are air-showered or water-quenched to cool down.
After annealing, the components are forwarded to the fine-grinding shop for precision treatment. Here, finishing is performed to customer-specific requirements.
