The paper presents the production problems related to casting using precision casting methods. The essential adverse effect of the casting
process is the presence of burrs understood as oversize material necessary to remove the next finishing operations. In addition, the surfaces
of the cast often characterized by a porous structure. One of the methods to improve the smoothness of the area proposed by the authors is
the use of vibro-abrasive finishing. This type of treatment is widely used in the treatment of finishing small objects as well as complex
shapes. Objects in the form of casting in the first step was treated with aggressive deburring polyester matrix abrasive media. The second
stage was polishing, with using smoothing porcelain media. The study evaluated the effect of vibro-abrasive machining typical cast on the
basic parameters of the geometric structure of the surface. Observations using optical microscope Nicon Eclipse MA 200 compared
changes in surface microstructure and the effect of deburring. Clearly we can say that vibro-abrasive machining an effective way
of reducing the size of burrs, smoothing and lightening the surface of objects made by casting.
Ablation casting is a technological process in which the increased cooling rate causes microstructure refinement, resulting in improved mechanical properties of the final product. This technology is particularly suitable for the manufacture of castings with intricate shapes and thin walls. Currently, the ablation casting process is not used in the Polish industry. This article presents the results of strength tests carried out on moulding sands based on hydrated sodium silicate hardened in the Floster S technology, intended for ablation casting of the AlSi7Mg (AK7) aluminium alloy. When testing the bending and tensile strengths of sands, parameters such as binder and hardener content were taken into account. The sand mixtures were tested after 24h hardening at room temperature. The next stage of the study describes the course of the ablation casting process, starting with the manufacture of foundry mould from the selected moulding mixture and ending in tests carried out on the ready casting to check the surface quality, structure and mechanical properties. The results were compared with the parallel results obtained on a casting gravity poured into the sand mould and solidifying in a traditional way at ambient temperature.