公开(公告)号：EP3594267A1

公开(公告)日：2020-01-15

申请号：EP18182749.4

申请日：2018-07-10

申请人： Hexcel Corporation

发明人： DEFELICE, Scott ,  DECARMINE, Anthony

IPC分类号： C08J3/12 ,  C08K7/06 ,  B29C64/00

摘要： A powder composition suitable for use in laser sintering for printing a three-dimensional object, the powder composition comprising; a polyaryletherketone (PAEK) powder having a plurality of particles, the plurality of particles having a mean diameter D50; a plurality of carbon fibers having a mean length L50; wherein L50 is greater than D50.

公开(公告)号：EP3593999A1

公开(公告)日：2020-01-15

申请号：EP18182718.9

申请日：2018-07-10

申请人： Hexcel Corporation

发明人： DEFELICE, Scott ,  DECARMINE, Anthony

IPC分类号： B33Y80/00 ,  B22F3/105 ,  B33Y10/00 ,  B33Y50/00 ,  B29C64/153 ,  B29C64/386 ,  B29C64/268

摘要： A method of analytically determining an optimal laser power for configuring a laser in a selective laser sintering process, comprising:
choosing a batch of powder material for building a plurality of test rods (202a-202e);
selecting a range of laser power for building the plurality of test rods (202a-202e);
determining a plurality of power increments within the selected range to define a plurality of different laser power settings;
programming a selective laser sintering machine (10) to build at least one test rod of said plurality of test rods (202a-202e) at each laser power setting;
constructing the plurality of test rods (202a-202e) from the batch of powder material (36) based on said programming;
inspecting each test rod for voids in a surface of the test rod; and
identifying the laser power setting used to construct a respective test rod without formation of voids in the surface as an optimal laser power for configuring the selective laser sintering machine (10) when conducting a laser sintering process using the chosen batch of powder material (36).

公开(公告)号：EP3615251A1

公开(公告)日：2020-03-04

申请号：EP18791345.4

申请日：2018-04-25

申请人： Hexcel Corporation

发明人： DEFELICE, Scott ,  DECARMINE, Anthony

IPC分类号： B22F3/105 ,  B29C64/153 ,  B29C64/264 ,  B29C64/268 ,  B29C64/295

公开(公告)号：EP3594266A1

公开(公告)日：2020-01-15

申请号：EP18182744.5

申请日：2018-07-10

申请人： Hexcel Corporation

发明人： DEFELICE, Scott ,  DECARMINE, Anthony

IPC分类号： C08J3/12 ,  C08G65/30 ,  B29C64/314 ,  C08G65/40 ,  C08G65/46

摘要： A method for preparing a PAEK powder for use in SLS includes the steps of:
providing a raw, non-powder PAEK material, optionally comprising one or more liquid solvents;
after the providing step, heat treating the raw PAEK to evaporate at least substantially all of any liquid solvent in the raw PAEK, causing at least substantially all of the raw PAEK to be in the form of irregularly-shaped particles;
after the heat treating step, cooling the raw PAEK; and
after the cooling step, grinding the raw PAEK to form a PAEK powder.