METHOD OF LAYER-BY-LAYER FORMATION OF MOULDS AND RODS BY MEANS OF LIQUID BINDER-CONTAINING BINDER AND BINDER CONTAINING LIQUID GLASS Russian patent published in 2019 - IPC B29C67/00 B29C64/165 B29C64/153 B29C64/393 B22F7/02 B22C9/10 C04B35/14 B22C15/00 

Abstract RU 2706616 C2

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a binder which contains liquid glass and additionally phosphate or borate or both, to a method of layer-by-layer formation of shapes and rods (embodiments). Method comprises a mixture of structural material, which at least contains refractory main molding material and binder with given properties. For layer-by-layer production of molds and rods by means of 3D printing refractory main molding material is applied layer-by-layer and selectively layer-by-layer on it is printed using binder, forming workpiece corresponding to forms or rods. Molds or rods are released after removal of unbound mix of structural material.

EFFECT: technical result achieved by using a group of inventions is to create a binder based on liquid glass or aqueous solution of alkali metal silicate for use in three-dimensional printing.

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RU 2 706 616 C2

Authors

Zupan, Henning

Deters, Heinz

Dates

2019-11-19Published

2015-12-11Filed