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US 2022/0024068 A1Published application
3d printing method using slip
AssigneeVoxeljet AG
InventorsIngo Ederer, Daniel Günther
Life of this patent
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Abstract
The invention relates to a 3D printing method, a device and molded parts produced with the aid of this method.
Claims20
A method for producing three-dimensional molded parts in a device, comprising the following steps:
- a. producing a material layer by applying a slurry with an application means onto a contruction plane in a predetermined layer thickness, the slurry comprising a carrier fluid and particulate material, wherein the particulate material is or comprises an at least partially fusible material, wherein the particulate material is a sinterable material and is selected from the group consisting of a thermoplastic, a polyconsensate, preferably a polyamide (PA), metallic and/or ceramic particles or a mixture thereof;
- b. applying a liquid binder material to selected areas of the material layer;
- c. inputting energy for sintering or at least partial fusion, wherein the energy takes place in the form of electromagnetic energy, by means of a radiator in the IR-A or/and IR-B range or by means of an IR radiator or by means of a laser,
- d. lowering the construction plane by a desired layer thickness or raising the application means and, if necessary, other means of the device by a desired layer thickness;
- e. repeating steps a.) through d);
- wherein the binder material contains or consists of an energy-absorbing material, said energy-absorbing material containing graphite or carbon black, and absorbs and releases energy and heat to the surrounding material, thereby causing a local temperature increase;
- f. removing the material surrounding the molded parts to obtain the molded parts.
4 more elements
Dependencies are inferred from the claim text.