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1. WO2004094089 - METAL POWDER COMPOSITION FOR LASER SINTERING

Veröffentlichungsnummer WO/2004/094089
Veröffentlichungsdatum 04.11.2004
Internationales Aktenzeichen PCT/US2004/004974
Internationales Anmeldedatum 18.02.2004
IPC
C22C 33/02 2006.01
CChemie; Hüttenwesen
22Metallhüttenwesen; Eisen- oder Nichteisenlegierungen; Behandlung von Legierungen oder von Nichteisenmetallen
CLegierungen
33Herstellung von Eisenlegierungen
02auf pulvermetallurgischem Wege
CPC
B22F 2003/248
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
24After-treatment of workpieces or articles
248Thermal after-treatment
B22F 2998/10
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2998Supplementary information concerning processes or compositions relating to powder metallurgy
10Processes characterised by the sequence of their steps
B22F 2999/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2999Aspects linked to processes or compositions used in powder metallurgy
B33Y 10/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
B33Y 40/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
40Auxiliary operations or equipment, e.g. for material handling
B33Y 70/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
70Materials specially adapted for additive manufacturing
Anmelder
  • 3D SYSTEMS INC [US]/[US] (AllExceptUS)
  • GEVING, Brad [US]/[US] (UsOnly)
  • SCHMIDT, Kris [US]/[US] (UsOnly)
  • NEWELL, Ken [US]/[US] (UsOnly)
Erfinder
  • GEVING, Brad
  • SCHMIDT, Kris
  • NEWELL, Ken
Vertreter
  • D'ALESSANDRO, Ralph
Prioritätsdaten
10/394,31219.03.2003US
Veröffentlichungssprache Englisch (EN)
Anmeldesprache Englisch (EN)
Designierte Staaten
Titel
(EN) METAL POWDER COMPOSITION FOR LASER SINTERING
(FR) COMPOSITION DE POUDRE METALLIQUE POUR FRITTAGE LASER
Zusammenfassung
(EN)
A powder blend for use in laser sintering and a method for forming tough, strong, wear-resistant, corrosion-resistant infiltrated metal products are provided. The powder blend comprises a steel alloy, a polymeric binder and a high melting temperature fine particulate which are blended together, then applied layer by layer to a working surface in a laser sintering system, exposed a layer at a time to fuse together the powder until a green part of high strength is formed, and then the green part is infiltrated with a metal infiltrant in a non-reducing gas atmosphere at an effective temperature for an effective period of time. The preferred steel is a mild steel alloy.
(FR)
L'invention concerne un mélange de poudre convenant pour le frittage laser et un procédé permettant de former des produits métalliques infiltrés durs, solides, résistants à l'usure et résistants à la corrosion. Ce mélange de poudre comprend un alliage d'acier, un liant polymère et un matériau en particules fines à température de fusion élevée, qui sont mélangées puis appliquées couche par couche sur une surface de travail dans un système de frittage laser, puis exposées une à une de manière à provoquer la fusion la poudre, jusqu'à former une pièce compacte très résistante, puis cette pièce compacte est infiltrée avec un infiltrant métallique dans une atmosphère gazeuse non réductrice, à une température et pendant une période de temps utiles. L'acier préféré est un alliage d'acier doux.
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