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US 10,946,556 B2Granted
Method and casting mold, in particular for use in cold casting methods
AssigneeVoxeljet AG
InventorsIngo Ederer, Daniel Günther, Anton Gruber
Life of this patent
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Abstract
The invention relates to a casting mold, in particular for use in cold casting methods, which is produced with the aid of a powder-based layering method, the final casting mold having a treated surface.
Claims17
A method comprising the steps of:
- producing a casting molds for use in cold casting methods at temperatures where the casting mold is not destroyed, wherein the casting mold is built with the aid of a powder-based layering method and has a porous molded body,
- treating a porous surface of the casting mold with a sealant which closes pores of the molded body and seals the surface water-tight,
- cold casting a part at a temperature where the casting mold is not destroyed, and
- removing the part from the casting mold;
- wherein the layering method is a powder bed-based 3D printing method and includes:
- applying a powder-based layer using a coater, wherein the powder-based layer includes a particle precoated with an activator;
- and
- selectively printing a fluid on the powder-based layer with a print head.
5 more elements
A method comprising the steps of:
- producing a casting molds for use in cold casting methods at temperatures where the casting mold is not destroyed, wherein the casting mold is built with the aid of a powder-based layering method,
- treating a porous surface of the casting mold,
- cold casting a part at a temperature where the casting mold is not destroyed, and
- removing the part from the casting mold;
- wherein the layering method includes applying a powder-based layer using a coater,
- wherein the powder-based layer includes a sand particle precoated with an activator;
- and
- selectively printing a fluid on the powder-based layer with an ink jet print head;
- wherein the fluid reacts with the activator on the powder-based layer to form a polymer that binds the sand particles together.
6 more elements
Dependencies are inferred from the claim text.