ATE217651T1 - HOOD FURNACE - Google Patents

HOOD FURNACE

Info

Publication number
ATE217651T1
ATE217651T1 AT98904091T AT98904091T ATE217651T1 AT E217651 T1 ATE217651 T1 AT E217651T1 AT 98904091 T AT98904091 T AT 98904091T AT 98904091 T AT98904091 T AT 98904091T AT E217651 T1 ATE217651 T1 AT E217651T1
Authority
AT
Austria
Prior art keywords
nozzles
cooling
air
distance
protective
Prior art date
Application number
AT98904091T
Other languages
German (de)
Inventor
Frank Maschler
Walter Scheuermann
Georg Velten
Original Assignee
Loi Thermprocess 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 Loi Thermprocess Gmbh filed Critical Loi Thermprocess Gmbh
Application granted granted Critical
Publication of ATE217651T1 publication Critical patent/ATE217651T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/667—Multi-station furnaces
    • C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling

Abstract

The invention relates to a top hat furnace, specially for annealing steel sheet metal using protective gas, comprising a protective top (1) surrounding the steel sheet metal batches. A cooling top is arranged above the protective top (1) forming an intermediate space. The cooling top has a cover (4) and a lid (5). The cover of the cooling top has a plurality of air nozzles (7) so that cooling air impacts the protective top (1) in the form of jets. At least one fan (6) produces a flow of cooling air in the intermediate space (3). According to the invention, the distance (a) between the air nozzles increases from the bottom up, the distance between said nozzles (a) being 4 to 12 times greater than the diameter of the nozzles (d). The cooling lid (5) is also provided with a plurality of air nozzles (7), the distance between said nozzles (a) being 4 to 7 times greater than the diameter of the nozzles (d).
AT98904091T 1997-01-30 1998-01-17 HOOD FURNACE ATE217651T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19703305 1997-01-30
PCT/EP1998/000246 WO1998033946A1 (en) 1997-01-30 1998-01-17 Top hat furnace

Publications (1)

Publication Number Publication Date
ATE217651T1 true ATE217651T1 (en) 2002-06-15

Family

ID=7818731

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98904091T ATE217651T1 (en) 1997-01-30 1998-01-17 HOOD FURNACE

Country Status (7)

Country Link
EP (1) EP0894150B1 (en)
JP (1) JP2000508716A (en)
AT (1) ATE217651T1 (en)
BR (1) BR9805962A (en)
DE (1) DE19803259B4 (en)
EA (1) EA000962B1 (en)
WO (1) WO1998033946A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19847417C2 (en) * 1998-10-14 2001-10-04 Junker Gmbh O Bell furnace system
DE29907320U1 (en) 1999-04-26 1999-08-12 Drever Int Sa Device for cooling materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433433C1 (en) * 1984-09-12 1985-10-24 Otto Junker Gmbh, 5107 Simmerath Device for heating or cooling metallic goods
DE3824415A1 (en) * 1988-07-19 1990-01-25 Gottfried Von Czarnowski Cooling hood for rapid cooling of red-hot material, in particular steel strip
AT396525B (en) * 1992-03-20 1993-10-25 Ebner Ind Ofenbau Device for cooling the charge-protecting cover of annealing furnaces
US5290017A (en) * 1993-03-01 1994-03-01 Indugas, Inc. Cooling cover for batch coil annealing furnace
AT399775B (en) * 1994-01-20 1995-07-25 Ebner Ind Ofenbau DEVICE FOR COOLING THE BATCH PROTECTIVE COVER OF TUBES

Also Published As

Publication number Publication date
EP0894150A1 (en) 1999-02-03
DE19803259A1 (en) 1998-08-06
EA000962B1 (en) 2000-08-28
DE19803259B4 (en) 2006-10-12
JP2000508716A (en) 2000-07-11
WO1998033946A1 (en) 1998-08-06
EA199800880A1 (en) 1999-04-29
EP0894150B1 (en) 2002-05-15
BR9805962A (en) 2000-01-25

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee