EP1046448A3 - Apparatus for removal of binder from metal powder - Google Patents

Apparatus for removal of binder from metal powder Download PDF

Info

Publication number
EP1046448A3
EP1046448A3 EP00104195A EP00104195A EP1046448A3 EP 1046448 A3 EP1046448 A3 EP 1046448A3 EP 00104195 A EP00104195 A EP 00104195A EP 00104195 A EP00104195 A EP 00104195A EP 1046448 A3 EP1046448 A3 EP 1046448A3
Authority
EP
European Patent Office
Prior art keywords
dewaxing
maximum
emerging
binder
removal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00104195A
Other languages
German (de)
French (fr)
Other versions
EP1046448A2 (en
Inventor
Peter Dipl.-Ing. Felski (FH)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALD Vacuum Technologies GmbH
Original Assignee
ALD Vacuum Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Publication of EP1046448A2 publication Critical patent/EP1046448A2/en
Publication of EP1046448A3 publication Critical patent/EP1046448A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1017—Multiple heating or additional steps
    • B22F3/1021—Removal of binder or filler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/066—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln
    • F27D2019/0021—Monitoring the temperature of the exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Beseitigen von Bindestoff aus Metallpulvern und dergleichen. Hierbei wird von der Tatsache Gebrauch gemacht, dass das aus einem Sinterofen während eines Entwachsungsvorgangs austretende und über ein Rohr abgesaugte Gas einen Temperaturverlauf aufweist, welcher einen Hinweis auf den Stand der Entwachsung gibt. Beim Maximalgrad des Entwachsens, d. h. wenn das in gasförmiger Form aus einer Sintermasse austretende Wachs ein Maximum erreicht, ist auch die Temperatur im Absaugrohr am höchsten. Ist dieses Maximum erfasst, kann man durch Extrapolation auf die Beendigung des Entwachsungsvorgangs schließen. Steht das Ende dieses Vorgangs fest, muss der Vorgang des Entwachsens nicht länger als nötig durchgeführt werden. Man kann somit früher als bisher üblich mit dem eigentlichen Sintervorgang beginnen.The invention relates to a device and a method for removing binding material from metal powders and the like. This makes use of the fact that the emerging from a sintering furnace during a dewaxing process and gas drawn off via a tube has a temperature profile which gives an indication of the state of dewaxing. At the maximum degree of dewaxing, d. H. when the wax emerging from a sintered mass in gaseous form When the maximum is reached, the temperature in the suction pipe is also the highest. Is this Maximum recorded, can be extrapolated to the end of the dewaxing process conclude. Once the end of this process has been determined, the process of Dewaxing should not be done longer than necessary. One can therefore earlier than previously usual start with the actual sintering process.

EP00104195A 1999-04-22 2000-03-01 Apparatus for removal of binder from metal powder Withdrawn EP1046448A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19918282 1999-04-22
DE19918282A DE19918282C1 (en) 1999-04-22 1999-04-22 Device and method for removing binding material from metal powders

Publications (2)

Publication Number Publication Date
EP1046448A2 EP1046448A2 (en) 2000-10-25
EP1046448A3 true EP1046448A3 (en) 2004-01-21

Family

ID=7905494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104195A Withdrawn EP1046448A3 (en) 1999-04-22 2000-03-01 Apparatus for removal of binder from metal powder

Country Status (2)

Country Link
EP (1) EP1046448A3 (en)
DE (1) DE19918282C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10151358A1 (en) * 2001-10-22 2003-04-30 Gero Hochtemperaturoefen Gmbh Procedure for controlling the debinding process for MIM or CIM parts
CN102211010A (en) * 2011-05-11 2011-10-12 山东大学 Paraffin wax melting and heat insulating device capable of automatically controlling temperature
US11364679B2 (en) 2019-11-01 2022-06-21 General Electric Company System and method of additively manufacturing an object
CN112815374A (en) * 2021-03-03 2021-05-18 王青梅 Monitoring equipment for heat supply

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305756A (en) * 1980-01-14 1981-12-15 Witec Cayman Patents, Ltd. Method and means for removing binder from a green body
DE3127066A1 (en) * 1981-07-09 1983-01-27 Degussa Ag, 6000 Frankfurt Process for expelling organic binders out of mouldings
US4404166A (en) * 1981-01-22 1983-09-13 Witec Cayman Patents, Limited Method for removing binder from a green body
US4795598A (en) * 1986-12-05 1989-01-03 Solid Micron Materials, Pte, Ltd. Method of making articles from sinterable materials
DE19939765C1 (en) * 1999-08-21 2001-03-01 Ald Vacuum Techn Ag Device for dewaxing sintered material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654374A (en) * 1969-07-25 1972-04-04 Adamas Carbide Corp Apparatus for and method of de-waxing, presintering and sintering powdered metal compacts
SE453183B (en) * 1982-05-04 1988-01-18 Svenska Silikatforskning PROCEDURE FOR REDUCING TIME BY REMOVING TEMPORA BINDERS FROM A FORMATED BODY
US4917859A (en) * 1989-09-06 1990-04-17 Mitsubishi Steel Mfg. Co., Ltd. Dewaxing process for metal powder compacts made by injection molding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305756A (en) * 1980-01-14 1981-12-15 Witec Cayman Patents, Ltd. Method and means for removing binder from a green body
US4404166A (en) * 1981-01-22 1983-09-13 Witec Cayman Patents, Limited Method for removing binder from a green body
DE3127066A1 (en) * 1981-07-09 1983-01-27 Degussa Ag, 6000 Frankfurt Process for expelling organic binders out of mouldings
US4795598A (en) * 1986-12-05 1989-01-03 Solid Micron Materials, Pte, Ltd. Method of making articles from sinterable materials
DE19939765C1 (en) * 1999-08-21 2001-03-01 Ald Vacuum Techn Ag Device for dewaxing sintered material

Also Published As

Publication number Publication date
EP1046448A2 (en) 2000-10-25
DE19918282C1 (en) 2001-01-25

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