METHOD OF PREPARING METAL MOULD FOR CASTING WITH METAL Russian patent published in 2025 - IPC B22C9/18 B22D7/06 B22D15/00 

Abstract RU 2841324 C1

FIELD: foundry production.

SUBSTANCE: preparation method of metal mould for metal casting involves heating of split spherical matrix to 100-200 °C and heated metal spherical mould with refractory coating applied thereon is placed therein with close contact. Then split matrix is cooled to temperature of 20-30 °C, this brings about stressed state of all-round compression in mould walls. Preliminary creation of compressive stresses in the wall of the casting mould leads to reduction of tensile stresses in the wall of the casting mould, which are formed during manufacture of metal spherical castings under internal gas pressure.

EFFECT: higher resistance of mould to cracking at high internal gas pressure.

1 cl, 2 dwg, 1 ex

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RU 2 841 324 C1

Authors

Evstigneev Aleksej Ivanovich

Odinokov Valerij Ivanovich

Dmitriev Eduard Anatolevich

Koloshenko Yuliya Borisovna

Potyanikhin Dmitrij Andreevich

Dates

2025-06-06Published

2024-11-12Filed