Patent · US Active

Method for demoulding a casting, cast from a light metal melt, from a casting mould

US9895745B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Nemak, S.A.B. de C.V. · MX

Inventors

Valentin Diel · Heusweiler, DE
Heiko Weber · Pfungstadt, DE
Detlef Kube · Sundern, DE
Marcus Speicher · Celina, US

Key dates

Filing date	Sep 4, 2013
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Sep 4, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22F1/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for demolding a casting from a casting mold having at least one casting core which images a passage opening in the casting connecting two outer sides of the casting and is produced from a molding material bound by a binder which decomposes under the influence of temperature, wherein the casting mold undergoes a heat treatment in a furnace for the demolding, during which it is heated to a temperature at which the binder loses its binding effect. In the furnace, hot gas is flowed through a passage formed in the casting core of the casting mold, the temperature of the hot gas corresponding at least to the temperature at which the binder of the molding material loses it binding effect such that the casting core decomposes into fragments or separate sand particles as a consequence of the influence of the hot gas.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.