Mathematical modeling of the influence of the gating system on the quality of the cast product during alloy casting

What is it about?

the influence of different gating systems on the alloy quality for steel and cast-iron alloys in a sand-clay mold is mathematically modeled. Based on the transition of liquid alloy from turbulent flow to laminar flow, a side casting system was chosen. It was found that 540 grams of mold mixture was added to the liquid alloy at a height of 850 mm through the side casting system of the disc detail, which impaired the quality of the casting. It was found that 540 grams are added at a height of 450 mm through the above casting system, and 540 grams at a height of 600 mm through the below casting system. It has been proven by modeling that the disc detail is cast from the side in a sand-clay mold, resulting in less loss of mold material and less addition of non-metallic inclusions to the alloy.

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Why is it important?

Gating feeding systems serve to ensure the filling of casting molds with metal at an optimal speed, eliminating the formation of underfills and non-metallic inclusions in the casting and compensating for volumetric shrinkage during the period of solidification of the casting to obtain metal of a given density. Gating feeding systems must also meet the requirements for manufacturability in the manufacture of models, molds and castings. At the same time, it is necessary to strive to create the most compact gating feeding systems possible. Their excessive development leads to excessive consumption of metal, overestimation of labor costs, and low efficiency in the use of equipment and space. Typical gating systems include: horizontal, side, siphon, top and rain.