Process for producing a moulding using a water-soluble casting mould and material system for the production thereof
US10343301B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 18, 2014 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/3842
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing molded parts (16), a water-soluble casting mold (6) being produced in a first step using a layering method, in particular using a powder bed-based layering method. In a second step, the surface of the casting mold (6) is sealed with the aid of a material (9; 10). A casting of the molded part (16) is then formed by filling the casting mold (6) with a free-flowing, hardenable material (13), in particular a hydraulically setting material. After the casting has solidified, the casting mold (6) is dissolved with the aid of an aqueous solution (18), in particular a heated aqueous solution (18). The present application furthermore relates to a material system for producing a water-soluble casting mold (6), comprising at least one water-soluble material for building a casting mold (6) in a layering method, as well as comprising at least one material (9; 10) for sealing the surface of the casting mold (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.