FIELD: chemistry.
SUBSTANCE: invention relates to moulds for manufacturing glass products and can be used in glass industry. Mould for manufacturing glass products is made from grey ferrite-pearlite cast iron, which contains, wt %: carbon - 3.2-3.6; silicon - 1.8-2.3; manganese - 0.5-0.7; chrome - 0.00-0.25; nickel - 0.6-0.9; molybdenum - 0.3-0.5; titanium - 0.00-0.1; copper - 0.1-0.2; sulphur - 0.00-0.1; phosphorus - 0.00-0.1; iron - the remaining part, and which has structure, consisting minimum of 95% ferrite and not more than 5% pearlite, in which free graphite is of flake shape, with graphite structure being coarse-grained on the external side and fine-grained - on the internal side. Mould is cast from cast iron of said composition, with casting being performed on metal cooler.
EFFECT: ensuring stability of microstructure, required for heat-conductivity, strength, resistance to cracking and wear stability of moulds for manufacturing glass products.
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