EP0332926A3 - Continuous furnace for sintering pressed metal powders - Google Patents

Continuous furnace for sintering pressed metal powders Download PDF

Info

Publication number
EP0332926A3
EP0332926A3 EP89103492A EP89103492A EP0332926A3 EP 0332926 A3 EP0332926 A3 EP 0332926A3 EP 89103492 A EP89103492 A EP 89103492A EP 89103492 A EP89103492 A EP 89103492A EP 0332926 A3 EP0332926 A3 EP 0332926A3
Authority
EP
European Patent Office
Prior art keywords
metal powders
pressed metal
continuous furnace
furnace
sintering pressed
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Withdrawn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
EP89103492A
Other languages
German (de)
French (fr)
Other versions
EP0332926A2 (en
Inventor
Dante Belluzzi
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.)
NUOVA MATRIX Srl
Original Assignee
NUOVA MATRIX Srl
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 NUOVA MATRIX Srl filed Critical NUOVA MATRIX Srl
Publication of EP0332926A2 publication Critical patent/EP0332926A2/en
Publication of EP0332926A3 publication Critical patent/EP0332926A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • 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
    • B22F3/003—Apparatus, e.g. furnaces
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F27B9/047—Furnaces with controlled atmosphere the atmosphere consisting of protective gases
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D2001/0059—Construction elements of a furnace
    • F27D2001/0069—Means to prevent heat conduction
    • F27D2001/0073—Surrounding protection around the furnace, e.g. covers, circulation of gas
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
    • F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Tunnel Furnaces (AREA)

Abstract

Continuous furnace for sintering pressed metal powders, constituted by a furnace traversed by a plurality of transverse, parallel, adjacent and continuously rotating rollers (9) made of refractory material which operate in an inert-gas atmosphere, and comprising gas sealing means (11) and burners arranged at the inlet and at the outlet of the furnace and adapted to eliminate by combustion any traces of oxidating gases.
EP89103492A 1988-03-15 1989-02-28 Continuous furnace for sintering pressed metal powders Withdrawn EP0332926A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT337288 1988-03-15
IT03372/88A IT1220312B (en) 1988-03-15 1988-03-15 OVEN WITH CONTINUOUS FEEDING OF THE PIECES FOR THE SINTERING OF PRESSED METAL POWDERS

Publications (2)

Publication Number Publication Date
EP0332926A2 EP0332926A2 (en) 1989-09-20
EP0332926A3 true EP0332926A3 (en) 1990-02-28

Family

ID=11105896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103492A Withdrawn EP0332926A3 (en) 1988-03-15 1989-02-28 Continuous furnace for sintering pressed metal powders

Country Status (2)

Country Link
EP (1) EP0332926A3 (en)
IT (1) IT1220312B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9205383U1 (en) * 1992-04-18 1993-09-09 Keller GmbH, 49479 Ibbenbüren Tunnel kiln
DE9205385U1 (en) * 1992-04-18 1993-08-12 Keller GmbH, 49479 Ibbenbüren Tunnel kiln for firing ceramic moldings
DE4228006A1 (en) * 1992-08-24 1994-03-03 Ngk Insulators Ltd Continuous roller hearth furnace
IT1306298B1 (en) * 1998-06-18 2001-06-04 Tecnochimica Sassolese S R L SEALING AND ROLLER HANDLING DEVICE TRANSPORT OF A ROLLER OVEN
CN103438700B (en) * 2013-08-02 2016-01-20 浙江吉利汽车研究院有限公司 For the heating furnace of hot forming production line
CN103453770A (en) * 2013-08-29 2013-12-18 江苏高皓工业炉有限公司 Energy-saving cover type sintering furnace
CN112743076A (en) * 2021-01-12 2021-05-04 江苏威拉里新材料科技有限公司 Metal powder smelting integrated furnace with automatic material collecting structure
CN115634983A (en) * 2021-07-19 2023-01-24 苏州普热斯勒先进成型技术有限公司 Heating furnace

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175834A (en) * 1938-09-30 1939-10-10 Westinghouse Electric & Mfg Co Heat treating furnace
GB563225A (en) * 1943-02-05 1944-08-03 Bernard Joseph Moore Improvements in industrial kilns and ovens
US3575398A (en) * 1968-11-13 1971-04-20 Midland Ross Corp Apparatus for minimizing atmosphere upset in a furnace for heat treating articles
FR2385060A1 (en) * 1977-03-24 1978-10-20 Autoclave Eng Inc AUTOCLAVE OVEN
FR2405449A1 (en) * 1977-10-07 1979-05-04 Welko Ind Spa SUPPORT FOR ROTATING ROLLERS FORMING THE ADVANCEMENT PLAN OF CERAMIC MATERIALS IN THE COOKING OVENS
GB2135032A (en) * 1983-02-10 1984-08-22 Boc Group Plc Heat treatment of workpieces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175834A (en) * 1938-09-30 1939-10-10 Westinghouse Electric & Mfg Co Heat treating furnace
GB563225A (en) * 1943-02-05 1944-08-03 Bernard Joseph Moore Improvements in industrial kilns and ovens
US3575398A (en) * 1968-11-13 1971-04-20 Midland Ross Corp Apparatus for minimizing atmosphere upset in a furnace for heat treating articles
FR2385060A1 (en) * 1977-03-24 1978-10-20 Autoclave Eng Inc AUTOCLAVE OVEN
FR2405449A1 (en) * 1977-10-07 1979-05-04 Welko Ind Spa SUPPORT FOR ROTATING ROLLERS FORMING THE ADVANCEMENT PLAN OF CERAMIC MATERIALS IN THE COOKING OVENS
GB2135032A (en) * 1983-02-10 1984-08-22 Boc Group Plc Heat treatment of workpieces

Also Published As

Publication number Publication date
IT8803372A0 (en) 1988-03-15
IT1220312B (en) 1990-06-15
EP0332926A2 (en) 1989-09-20

Similar Documents

Publication Publication Date Title
NZ195098A (en) Burner for partial combustion of solid fuel in particulate form
EP0332926A3 (en) Continuous furnace for sintering pressed metal powders
SE8004616L (en) DEVICE FOR INITIAL GAS IN METAL MELTOR
ES2000918A6 (en) Modification of drying and burning installations for ceramic products.
CA2097239A1 (en) Method and apparatus for oxidizing pulverous fuel with two gases having different oxygen contents
ZA754917B (en) Method for the controlled combustion of flue gas in operating a closed electric-arc reduction furnace, and apparatuscarrying out the method
JPS5211105A (en) Denitration process for exhaust gases of iron ore pelletizing
FR2515686B1 (en)
EP0978337A3 (en) Method for de-lubricating powder metal compacts
JPS5248564A (en) Process for removing nitrogen oxides in exhaust gas of combustion
JPS5398525A (en) Multistage combustion system
GB1484420A (en) Steel making furnaces
JPS5250037A (en) Infrared gas burner
Maulik et al. Continuous Rapid Annealing of Copper Tube
SU634075A1 (en) Melting furnace
Govorov et al. Influence of oxide dust on the rate of combustion of mixtures of converter gases with air
PL273494A1 (en) Method and device for heating air and using exhaust gas heat from continuous and periodical furnace fired with fuel, especially gaseous and liquid
JPS56138673A (en) Material preheating furnace utilizing exhaust gas
Degtyarenko Sintering with impulse mode of filtration of sintering gases
Schmid High-temperature gas kiln in the ceramic department, Institute for Mineralogy and Metallurgy, Technical University, Aachen[Germany]
AR227789A1 (en) METHOD AND DEVICE FOR BURNING FUEL GAS IMPULSES IN INDUSTRIAL FURNACES, IN PARTICULAR IN METALLURGICAL FURNACES
JPS5691179A (en) Atmosphere gas feeder in rotary hearth type muffle furnace
JPS5322187A (en) Exhaust gas treating catalyst for oil burners
JPS53110985A (en) Production of exhaust gas denitration catalyst
JPS57161479A (en) Improvement in melting furnace with preheating column utilizing exhaust gas

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: F27B 9/24

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900829