FIELD: metallurgy.
SUBSTANCE: graphite mould is mechanically made, then a spatially complex mould fragment is made by applying to a model in the form of a sector of the refractory lining by casting as per cast models. The model is grown by prototyping. The resulting fragment is fixed in a graphite mould.
EFFECT: improved accuracy of holes in the large-sized castings.
5 dwg, 1 ex
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