Poly(aryl-ether-ketone) (PAEK) powder suitable for multiple use in sintering methods
AssigneeArkema France
InventorsBenoît Brule, Jérome Pascal
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Abstract
Provided is a poly(aryl-ether-ketone) (PAEK) powder suitable for use in a method for building objects layer-by-layer by electromagnetic radiation-generated sintering, which is obtained from a thermal pretreatment at a temperature between 260° C. and 290° C. and which has a melting temperature which is stable, at the build temperature, and below or equal to 330° C.
Claims13
A method for building a three-dimensional object layer-by-layer by electromagnetic radiation-generated sintering of powder,
- wherein the powder is a poly(aryl-ether-ketone) (PAEK) powder, the powder being obtained from thermal pretreatment at a temperature between 260° C. and 290° C. and having a melting temperature which is stable at the build temperature and which is below or equal to 330° C.,
- wherein the powder comprises a mixture of recycled and non-recycled powders,
- wherein parameters of the sintering machine include laser power and powder bed temperature,
- wherein the sintering is conducted in a sintering machine and wherein at least two successive sinterings are carried out while keeping the laser power of the sintering machine and the bed temperature unchanged, and
- wherein the second sintering of the at least two successive sinterings uses the unsintered powder from the first sintering of the at least two successive sinterings as recycled powder.
A method for building a three-dimensional object layer-by-layer by electromagnetic radiation-generated sintering of powder,
- wherein the powder is a poly(aryl-ether-ketone) (PAEK) powder, the powder being obtained from thermal pretreatment at a temperature between 260° C. and 290° C. and having a melting temperature which is stable at the build temperature and which is below or equal to 330° C.,
- wherein the powder comprises a mixture of recycled and non-recycled powders, the recycled powders having been used in an identical and/or a different number of cycles,
- wherein parameters of the sintering machine include laser power and powder bed temperature,
- wherein the sintering is conducted in a sintering machine and wherein successive sintering is carried out while keeping the bed temperature unchanged,
- wherein the bed temperature is the same bed temperature as the one which would be used for sintering a totally non-recycled powder of the PAEK.
A method for building a three-dimensional object layer-by-layer by electromagnetic radiation-generated sintering of powder,
- wherein the powder is a poly(aryl-ether-ketone) (PAEK) powder, the powder being obtained from thermal pretreatment at a temperature between 260° C. and 290° C. and having a melting temperature which is stable at the build temperature and which is below or equal to 330° C.,
- wherein the powder comprises a mixture of recycled and non-recycled powders, the recycled powders having been used in an identical and/or a different number of cycles,
- wherein parameters of the sintering machine include laser power and powder bed temperature,
- wherein the sintering is conducted in a sintering machine and wherein successive sintering is carried out while keeping laser power of the sintering machine, the bed temperature unchanged, wherein the laser power is the same laser power as the one which would be used for sintering a totally non-recycled powder of said PAEK.
Dependencies are inferred from the claim text.