Castings

The JSC «Sumy NPO» manufactures the castings of grey cast iron, steels and non-ferrous metals.

The following grades of cast iron are used for castings:Sch 10, Sch 35 (GOST 1412-85), ChH1, ChH2, ChH3, ChH28D2 (GOST 7769-82).

These castings are intended for parts manufacture of pumps for nuclear power stations, heavy-duty compressors and chemical equipment, which are operated in conditions of aggressive, toxic, explosion and fire dangerous media, high pressure and wide temperature ranges. The finished castings meet the strict requirements for mechanical properties, microstructure, chemical composition and density. Castings weight: from 50 g to 20,000 kg at maximum dimensions of 6,000×4,000×900 mm

For steel castings the following steel grades are used:
20L, 25L, 35L, 20H13L, H18H9TL, 20H20N 17S2L, 110G13L (GOST 977-88).
For steel castings the following steel grades are used: 20L, 25L, 35L, 20H13L, H18H9TL, 20H20N 17S2L, 110G13L (GOST 977-88). The steel castings are intended for parts manufacture of pumps for NPP, centrifuges and heavy-duty compressors, which are operated in conditions of radioactive media and high pressure. Steel melting is carried out in DSP-1.5, DSP-3 electric arc and IST – 0.4 induction furnaces. Castings weight: from 10 kg to 2500 kg at maximum dimensions of 1,500×1,000×1,000 mm.

For investment casting the following steel grades are used: 20H13L, 12H18N9TL, 12H18N12M3TL. The main nomenclature list includes impellers and guide vanes for centrifugal pumps. Steel melting is carried out in IST – 0.4 induction furnaces. Castings weight: to 20 kg at maximum dimensions of 300x300x200mm.

For copper alloys casting the following grades are used: BrO5C5S5, BrO10F1, BrA9G3L, BrO7S13N3, BrO12S2, L63. Casting is carried out in IST-0.16 and IST-0.4 induction furnaces. Pouring is carried out into chill molds, moulds of centrifugal machines and partially in sand forms.
Castings weight: to 200 kg at maximum dimensions of 500x500x300 mm.

For aluminium alloys casting the following grades are used: АК12, АК5M2, АК5М7. Casting is carried out in IAT – 0.4 induction and crucible gas furnaces.
Castings weight: to 150 kg at maximum dimensions of 800x800x300mm