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2 759 346

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(51)

IPC

B22C1/16(2006-01-01)

(21) (22)

Application

2021110451, 2021-04-13

(24)

Start date

2021-04-13

(22)

Actual filing date

2021-04-13

(45)

Published

2021-11-12

(72)

Inventor

Illarionov Ilya EgorovichZhirkov Evgenij NikolaevichPestryaev Denis AlekseevichStrelnikov Igor Anatolevich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Gosudarstvennyj Universitet Imeni I.N. Ulyanova"

BINDER FOR FOUNDRY MOLDING AND CORE SANDS Russian patent published in 2021 - IPC B22C1/16

Abstract RU 2759346 C1

FIELD: foundry.

SUBSTANCE: invention relates to foundry and can be used as a binder based on lignosulfonates for self-hardening molding and core sands. The binder contains, wt.%: lignosulfonate with a mass fraction of dry substances of at least 50% 40-50, amide borate compound 15-25 and water 25-45. The amido borate compound contains ammonium diformamide tetraborate of the formula (NH₄)₂B₄O₇·2HCONH₂⋅4H₂O or dimethylformamide ammonium tetraborate of the formula (NH4) (NH₄)₂B₄O₇·2HCONC₂H₆·4H₂O.

EFFECT: invention makes it possible to increase the rate of cold curing, to increase the strength and survivability, to improve the formability and to reduce the crumbling of molding and core sands.

1 cl, 1 dwg, 3 tbl

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RU 2 759 346 C1

Authors

Illarionov Ilya Egorovich

Zhirkov Evgenij Nikolaevich

Pestryaev Denis Alekseevich

Strelnikov Igor Anatolevich

Dates

2021-11-12—Published

2021-04-13—Filed