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1. US20040184944 - Metal powder composition for laser sintering

Amt Vereinigte Staaten von Amerika
Aktenzeichen/Anmeldenummer 10394312
Anmeldedatum 19.03.2003
Veröffentlichungsnummer 20040184944
Veröffentlichungsdatum 23.09.2004
Erteilungsnummer 6814926
Erteilungsdatum 09.11.2004
Veröffentlichungsart B2
IPC
B22F 3/00
BArbeitsverfahren; Transportieren
22Gießerei; Pulvermetallurgie
FVerarbeiten von Metallpulver; Herstellen von Gegenständen aus Metallpulver; Gewinnung von Metallpulver; Apparate oder Vorrichtungen besonders ausgebildet für Metallpulver
3Herstellen von Gegenständen oder Halbzeug aus Metallpulver in Bezug auf die Art des Verdichtens oder Sinterns; Apparate hierfür
C22C 33/02
CChemie; Hüttenwesen
22Metallhüttenwesen; Eisen- oder Nichteisenlegierungen; Behandlung von Legierungen oder von Nichteisenmetallen
CLegierungen
33Herstellung von Eisenlegierungen
02auf pulvermetallurgischem Wege
CPC
C22C 33/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
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
Anmelder 3D Systems Inc.
Erfinder Geving, Brad
Schmidt, Kris Alan
Newell, Kenneth J.
Vertreter D'Alessandro, Ralph
Prioritätsdaten 10394312 19.03.2003 US
Titel
(EN) Metal powder composition for laser sintering
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.