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1. WO2020112082 - MONITORING A SINTERING PROCESS

Publication Number WO/2020/112082
Publication Date 04.06.2020
International Application No. PCT/US2018/062496
International Filing Date 26.11.2018
IPC
G01N 1/00 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
F27D 7/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS, OVENS OR RETORTS
DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
7Forming, maintaining, or circulating atmospheres in heating chambers
02Supplying steam, vapour, gases, or liquids
B22F 3/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
10Sintering only
CPC
B22F 3/10
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
10Sintering only
F27B 5/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
5Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
04adapted for treating the charge in vacuum or special atmosphere
F27B 5/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
5Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
06Details, accessories, or equipment peculiar to furnaces of these types
18Arrangement of controlling, monitoring, alarm or like devices
F27D 2019/0009
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
19Arrangements of controlling devices
0006Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
0009Monitoring the pressure in an enclosure or kiln zone
F27D 7/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
7Forming, maintaining, or circulating atmospheres in heating chambers
02Supplying steam, vapour, gases, or liquids
G01N 1/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • CHAMPION, David
  • SURI, Pavan
Agents
  • LEMMON, Marcus
  • RIETH, Nathan R.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MONITORING A SINTERING PROCESS
(FR) SURVEILLANCE D'UN PROCESSUS DE FRITTAGE
Abstract
(EN)
In an example implementation, a method of determining a sintering process endpoint includes monitoring gas flow through a detection gas line routed into a sintering furnace and through a furnace shelf on which a token green object is positioned. The method includes detecting a change in the gas flow when the token green object shrinks during a sintering process in the furnace, and determining that green objects being sintered in the furnace have reached a sintering endpoint when the change in the gas flow reaches a predetermined target.
(FR)
Dans un exemple de mise en œuvre, un procédé de détermination d'un critère final de processus de frittage comprend la surveillance de l'écoulement de gaz à travers une ligne de gaz de détection acheminée dans un four de frittage et à travers une étagère de four sur laquelle est positionné un objet jeton cru. Le procédé comprend la détection d'une variation du flux de gaz lorsque l'objet jeton cru se rétracte pendant un processus de frittage dans le four, et la détermination selon laquelle les objets crus frittés dans le four ont atteint un critère final de frittage lorsque la variation du flux de gaz atteint une cible prédéfinie.
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