COLD-HARDENING MIXTURE TO PRODUCE FOUNDRY MOULDS AND RODS Russian patent published in 1994 - IPC

Abstract RU 2022678 C1

FIELD: foundry. SUBSTANCE: mixture comprises 0.75 - 2.0 wt. per cent of metal oxide material (produced by crushing together magnesium oxide material and iron oxide material up to 200 - 400 m²/kg specific surface); 2.00 - 3.50 wt. per cent of acid phosphate composition; the balance being fire resistant granular filling of silicate nature. Complex metal oxide material comprises 4.0 - 30.0 wt. per cent of FeO; 5.0 - 40.0 wt. per cent of Fe₃O₄; 1.0 - 20.0 wt. per cent of Fe₂O₃; 10.0 - 90.0 wt. per cent of MgO. EFFECT: increased quality of moulds and rods due to their increased elastic-plastic properties. 2 cl, 4 tbl

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RU 2 022 678 C1

Authors

Ignatkina O.I.

Kuznetsov D.A.

Kornev A.G.

Dates

1994-11-15—Published

1991-06-24—Filed