公开(公告)号：US11148204B2

公开(公告)日：2021-10-19

申请号：US14647519

申请日：2013-11-27

Applicant: SNECMA ,  MBDA FRANCE

Inventor： Christophe Colin ,  Jean-Baptiste Mottin ,  Laëtitia Kirschner ,  Gérard Saussereau

IPC: B22F10/20 ,  C04B35/64 ,  B28B1/00 ,  C22C19/05 ,  B33Y10/00 ,  B22F1/00 ,  B29C64/153 ,  B22F3/105 ,  B29L31/00 ,  B33Y70/00 ,  B22F10/30

Abstract: A method for fabricating a part by selective melting or sintering of powder beds by high energy beam, the method including a) providing a material in the form of powder particles; b) depositing a first powder layer on a support; c) scanning a region of the first layer with the beam to heat the powder locally to a temperature higher than the powder sintering temperature, such that the powder particles as melted or sintered form a first single-piece element; d) depositing a second powder layer on the first powder layer; e) scanning a region of the second layer with the beam to heat the powder to a temperature higher than the powder sintering temperature, so that the particles of powder as sintered or melted form a second single-piece element; and f) repeating d) and e) for each new powder layer laid over a preceding layer until the part is formed.

公开(公告)号：US10967460B2

公开(公告)日：2021-04-06

申请号：US14648560

申请日：2013-11-29

Applicant: SAFRAN AIRCRAFT ENGINES ,  MBDA FRANCE

Inventor： Christophe Colin ,  Julie Maisonneuve ,  Gérard Saussereau

IPC: B23K26/14 ,  B22F3/105 ,  B29C64/153 ,  B29C64/00 ,  B28B1/00 ,  B29L31/00

Abstract: A method of fabricating a part includes: a) supplying powder particles; b) melting a first quantity of power with a beam and forming, on a support, a first pool including the melted powder and a portion of the support; c) forming a second pool by melting a second quantity of powder on the support; d) repeating c) to form a first layer; e) heating an [n]th quantity of the powder, and forming an [n]th pool above the first layer; f) heating an [n+1]th quantity of the powder, and forming an [n+1]th pool downstream from the [n]th pool above the first layer; g) repeating f) to form a second layer above the first layer; and h) repeating e) to g) until the part is constructed. The powder particles reaching each pool are at a temperature well below the pool temperature.