公开(公告)号：US10556379B2

公开(公告)日：2020-02-11

申请号：US15969358

申请日：2018-05-02

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/153 ,  B33Y10/00 ,  C08G65/40 ,  B29C67/04 ,  B29C64/357 ,  B33Y70/00 ,  B33Y40/00 ,  B29K71/00 ,  B29K105/26 ,  B29C35/08

Abstract: A process for manufacturing a three-dimensional object from a powder by selective sintering the powder using electromagnetic radiation. The powder includes recycled PAEK. In one embodiment, the powder includes recycled PEKK. In one embodiment, the powder includes first recycle PEKK and second recycle PEKK. In one embodiment, the powder consists essentially of recycled PEKK. The process may include the step of maintaining a bed of a selective laser sintering machine at approximately 300 degrees Celsius and applying a layer of the powder to the bed. The average in-plane tensile strength of the three-dimensional object is greater than that of a three-dimension object manufactured by selective sintering using a powder including an unused PEKK powder.

公开(公告)号：US20180243979A1

公开(公告)日：2018-08-30

申请号：US15969358

申请日：2018-05-02

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/153 ,  B33Y10/00 ,  C08G65/40 ,  B29C64/357 ,  B29C67/04 ,  B33Y40/00 ,  B33Y70/00 ,  B29K71/00 ,  B29K105/26 ,  B29C35/08

CPC classification number: B29C64/153 ,  B29C64/357 ,  B29C67/04 ,  B29C2035/0838 ,  B29K2071/00 ,  B29K2105/26 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C08G65/4012 ,  C08G2650/40

Abstract: A process for manufacturing a three-dimensional object from a powder by selective sintering the powder using electromagnetic radiation. The powder includes recycled PAEK. In one embodiment, the powder includes recycled PEKK. In one embodiment, the powder includes first recycle PEKK and second recycle PEKK. In one embodiment, the powder consists essentially of recycled PEKK. The process may include the step of maintaining a bed of a selective laser sintering machine at approximately 300 degrees Celsius and applying a layer of the powder to the bed. The average in-plane tensile strength of the three-dimensional object is greater than that of a three-dimension object manufactured by selective sintering using a powder including an unused PEKK powder.

公开(公告)号：US20180200960A1

公开(公告)日：2018-07-19

申请号：US15872496

申请日：2018-01-16

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/393 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y50/02 ,  B23K26/062

CPC classification number: B29C64/393 ,  B23K26/062 ,  B29C64/153 ,  B29C64/268 ,  B29C64/30 ,  B29K2071/00 ,  B29K2995/0077 ,  B33Y10/00 ,  B33Y50/02

Abstract: A method of analytically determining a laser power for laser sintering includes choosing a batch of powder material for building a plurality of test rods; selecting a range of laser power for building the test rods; determining a plurality of power increments within the selected range to define a plurality of laser power settings; programming a laser sintering machine to build at least one test rod at each laser power setting; constructing the test rods; wherein the optimal power is at least one watt below a lowest laser power setting associated with the formation of voids; identifying the laser power setting used to construct a respective test rod without formation of voids in the surface as an optimal laser power; and configuring the selective laser sintering machine with the optimal laser power when conducting a laser sintering process using the chosen batch of powder material.

公开(公告)号：US20180200922A1

公开(公告)日：2018-07-19

申请号：US15872478

申请日：2018-01-16

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29B9/16 ,  B33Y70/00 ,  B02C23/10

CPC classification number: B29B9/16 ,  B02C23/10 ,  B29B2009/168 ,  B29C64/153 ,  B29K2071/00 ,  B33Y10/00 ,  B33Y70/00 ,  C08G65/4012 ,  C08G65/46 ,  C08G2650/40 ,  C08J3/12 ,  C08J5/042 ,  C08J2371/10 ,  C08L71/12

Abstract: A method for preparing a PEKK powder for use in SLS includes the steps of: providing a raw, non-powder PEKK material; heat treating the raw PEKK to evaporate at least substantially all of a liquid solvent in the raw PEKK, causing at least substantially all of the raw PEKK to be in the form of irregularly-shaped particles; cooling the raw PEKK; and grinding the raw PEKK to form a PEKK powder.