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1. WO1997027016 - SOLIDIFICATION CONTROL INCLUDING PATTERN RECOGNITION

Publication Number WO/1997/027016
Publication Date 31.07.1997
International Application No. PCT/US1997/001437
International Filing Date 23.01.1997
Chapter 2 Demand Filed 20.08.1997
IPC
B22D 27/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
27Treating the metal in the mould while it is molten or ductile
04Influencing the temperature of the metal, e.g. by heating or cooling the mould
B22D 46/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
46Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
CPC
B22D 27/045
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
27Treating the metal in the mould while it is molten or ductile
04Influencing the temperature of the metal, e.g. by heating or cooling the mould
045Directionally solidified castings
B22D 46/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
46Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
Applicants
  • HOWMET CORPORATION [US]/[US]
Inventors
  • PURVIS, Andrew, L.
  • HANSLITS, Christopher, R.
  • DIEHM, Randall, S.
Agents
  • TIMMER, Edward, J.
Priority Data
08/592,72326.01.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SOLIDIFICATION CONTROL INCLUDING PATTERN RECOGNITION
(FR) SURVEILLANCE D'UNE SOLIDIFICATION, FAISANT APPEL A UNE RECONNAISSANCE DE MOTIFS
Abstract
(EN)
A method of predicting a grain condition in a directionally solidified casting, comprises generating thermal history data for a directional solidification casting process, determining a plurality of casting process variables that statistically influence a plurality of different grain conditions, identifying each grain condition by determining a function containing values of each selected variable, and categorizing the selected variables with respect to variance among and between the different grain conditions to determine a pattern between the selected variable and the grain conditions.
(FR)
Un procédé permettant de prévoir l'état des grains dans une pièce moulée à solidification directionnelle, consiste à produire un historique thermique du processus de solidification directionnelle de cette pièce moulée, à déterminer une pluralité de variables du procédé de moulage qui influent statistiquement sur une pluralité de différents états des grains, à identifier chaque état des grains en déterminant une fonction contenant des valeurs de chaque variable choisie et à classifier les variables choisies par rapport à la variance, entre et parmi les différents états des grains pour déterminer une correspondance entre la variable choisie et les états des grains.
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