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DE20203213U1 - Development of a refractory delivery for induction crucible furnaces - Google Patents

Development of a refractory delivery for induction crucible furnaces

Info

Publication number
DE20203213U1
DE20203213U1 DE20203213U DE20203213U DE20203213U1 DE 20203213 U1 DE20203213 U1 DE 20203213U1 DE 20203213 U DE20203213 U DE 20203213U DE 20203213 U DE20203213 U DE 20203213U DE 20203213 U1 DE20203213 U1 DE 20203213U1
Authority
DE
Germany
Prior art keywords
surface sealing
cardboard
fabric
double
refractory
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.)
Expired - Lifetime
Application number
DE20203213U
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE20203213U priority Critical patent/DE20203213U1/en
Publication of DE20203213U1 publication Critical patent/DE20203213U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details specially adapted for crucible or pot furnaces
    • F27B14/10—Crucibles
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details specially adapted for crucible or pot furnaces
    • F27B2014/0843—Lining or casing
    • 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
    • F27D1/0033—Linings or walls comprising heat shields, e.g. heat shields

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

Beschreibung:Description: Aufbau einer Feuerfestzustellung für InduktionstiegelöfenConstruction of a refractory lining for induction crucible furnaces

Die Feuerfest-Zustellung von Induktionstiegelöfen wird heutzutage immer nach dem gleichen Prinzip ausgeführt. Auf die wassergekühlte Kupferspule wird ein spezieller feuerfester Putz aufgebracht, um deren Beschädigung beim Entfernen des alten Feuerfesttiegels durch Herausdrücken oder Ausbrechen vorzubeugen.Nowadays, the refractory lining of induction crucible furnaces is always carried out according to the same principle. A special refractory plaster is applied to the water-cooled copper coil to prevent it from being damaged when the old refractory crucible is removed by pushing it out or breaking it off.

Darauf werden eine oder mehrere Gleittrennschichten aufgeklebt, die meist aus einer Glimmerschicht kaschiert mit einem Keramikfaserpapier besteht und dann wird eine Schablone in der Positiv-Form des späteren Tiegels zentrisch im Induktionstiegelöfen positioniert.One or more sliding separating layers are glued onto this, which usually consists of a mica layer laminated with a ceramic fiber paper, and then a template in the positive shape of the later crucible is positioned centrally in the induction crucible furnace.

Der nächste Schritt ist dann das Einbringen und Rütteln bzw. Verdichten der ausgewählten Feuerfestmasse zwischen der Gleitschicht und der Schablone. Bei dem anschließenden Sinterprozess entsteht der eigentliche Tiegel, in dem später die flüssige Schmelze hergestellt wird.The next step is to introduce and vibrate or compact the selected refractory mass between the sliding layer and the template. The subsequent sintering process creates the actual crucible in which the liquid melt is later produced.

Zwei Ausführungsbeispiele der Erfindung werden anhand der Figuren 1 und 2 dargestellt.Two embodiments of the invention are illustrated in Figures 1 and 2.

Durch den Verschleiß des Feuerfesttiegels (5) beim täglichen Einsatz wird dessen Wandstärke immer geringer und die Gefahr entsteht, dass die Schmelze (4) begünstigt durch Haarrisse oder andere Defekte die Feuerfestschicht (5), sowie die Glimmerschutzfolie (2) und auch den Spulenputz (6) durchdringt und die Spule (3) zerstört.Due to the wear of the refractory crucible (5) during daily use, its wall thickness becomes increasingly smaller and there is a risk that the melt (4) will penetrate the refractory layer (5) as well as the mica protective film (2) and also the coil plaster (6) through hairline cracks or other defects and destroy the coil (3).

Der Erfindung liegt die Forderung zu Grunde den Aufbau der Zustellung so zu optimieren, dass ein wirksamer Schutz der Induktionsspule auch bei Defekten in der Feuerfestmasse (5) gewährleistet ist und die Verfügbarkeit der Produktionsanlagen erhöht und die Produktivität dadurch gesteigert wird.The invention is based on the requirement to optimize the structure of the lining in such a way that effective protection of the induction coil is ensured even in the event of defects in the refractory mass (5) and the availability of the production facilities is increased and productivity is thereby increased.

Dies wird bei der Erfindung dadurch gelöst, dass zusätzlich zu den bekannten o.g. Zustellmaterialien zwischen der Kupferspule (3) und der Feuerfestauskleidung (5) eine oder mehrere Graphitfolien (1) eingebracht werden, die in der Lage sind durchsickernde Schmelzen für eine gewisse Zeit zurückzuhalten. Fig. 1 zeigt den Aufbau einer Feuerfestzustellung mit einer Graphitfolie (1), Fig. 2 den gleichen Aufbau mit einer zusätzlichen Graphitfolie. Durch mehrere Folien wird ein besserer bzw. längerer Schutz der Spule erreicht.This is solved in the invention by inserting one or more graphite foils (1) between the copper coil (3) and the refractory lining (5) in addition to the known lining materials mentioned above, which are able to hold back seeping melts for a certain time. Fig. 1 shows the structure of a refractory lining with a graphite foil (1), Fig. 2 shows the same structure with an additional graphite foil. Using several foils provides better and longer protection for the coil.

Claims (2)

1. Aufbau einer Feuerfestzustellung für Induktionsöfen, dadurch gekennzeichnet, dass zusätzlich zu den üblichen Materialien die zu einer Feuerfestzustellung eingesetzt werden zwischen der Induktionsspule (3) und dem Schmelzebereich (4) eine oder mehrere Schutzschichten aus Graphitfolie (1) eingebracht werden, wobei diese vorzugsweise zwischen der Glimmerschutzfolie (2) und der Feuerfestmasse (5) eingebracht wird. 1. Construction of a refractory lining for induction furnaces, characterized in that in addition to the usual materials used for a refractory lining, one or more protective layers of graphite foil ( 1 ) are introduced between the induction coil ( 3 ) and the melting area ( 4 ), whereby this is preferably introduced between the mica protective foil ( 2 ) and the refractory mass ( 5 ). 2. Schutzfolie für Induktionsspulen bestehend aus einer Graphitfolie mit einer beidseitigen elektrisch nicht leitenden Oberflächenversiegelung, dadurch gekennzeichnet 1. 2.1 dass, die beidseitige Oberflächenversiegelung aus flexibler Glimmerfolie besteht 2. 2.2 oder dass, die beidseitige Oberflächenversiegelung aus Mineralfaserpapier bzw. -gewebe, -flies oder -pappe besteht 3. 2.3 oder dass, die beidseitige Oberflächenversiegelung aus Keramikfaserpapier bzw. -gewebe, -flies oder -pappe besteht 4. 2.4 oder dass, die beidseitige Oberflächenversiegelung aus Glasfaserpapier, bzw. -gewebe, -flies oder -pappe besteht 5. 2.5 oder dass, die beidseitige Oberflächenversiegelung aus Siliziumfaserpapier, bzw. -gewebe oder -pappe besteht 6. 2.6 oder dass, die beidseitige Oberflächenversiegelung aus einer Kunststofffolie besteht 7. 2.7 oder dass die beidseitige Oberflächenversiegelung aus Papier besteht 2. Protective film for induction coils consisting of a graphite film with an electrically non-conductive surface seal on both sides, characterized 1. 2.1 that the double-sided surface sealing consists of flexible mica foil 2. 2.2 or that the surface sealing on both sides consists of mineral fibre paper or fabric, fleece or cardboard 3. 2.3 or that the double-sided surface sealing consists of ceramic fibre paper or fabric, fleece or cardboard 4. 2.4 or that the surface sealing on both sides consists of glass fibre paper, fabric, fleece or cardboard 5. 2.5 or that the double-sided surface sealing consists of silicon fibre paper, fabric or cardboard 6. 2.6 or that the surface sealing on both sides consists of a plastic film 7. 2.7 or that the double-sided surface seal is made of paper
DE20203213U 2002-02-28 2002-02-28 Development of a refractory delivery for induction crucible furnaces Expired - Lifetime DE20203213U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20203213U DE20203213U1 (en) 2002-02-28 2002-02-28 Development of a refractory delivery for induction crucible furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20203213U DE20203213U1 (en) 2002-02-28 2002-02-28 Development of a refractory delivery for induction crucible furnaces

Publications (1)

Publication Number Publication Date
DE20203213U1 true DE20203213U1 (en) 2002-09-19

Family

ID=7968426

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20203213U Expired - Lifetime DE20203213U1 (en) 2002-02-28 2002-02-28 Development of a refractory delivery for induction crucible furnaces

Country Status (1)

Country Link
DE (1) DE20203213U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009122163A1 (en) * 2008-04-04 2009-10-08 Elmelin Limited Furnace lining
US7905940B2 (en) * 2005-01-27 2011-03-15 Sgl Carbon Se Method for reducing metal oxide slags or glasses and/or for degassing mineral melts, and device for carrying out said method
WO2020033118A1 (en) * 2018-08-10 2020-02-13 American Iron And Steel Institute Flash ironmaking drop tube furnace system
CN112113420A (en) * 2020-09-07 2020-12-22 宁国市宏达电炉有限公司 Induction heating furnace with induction coil gap type heat dissipation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905940B2 (en) * 2005-01-27 2011-03-15 Sgl Carbon Se Method for reducing metal oxide slags or glasses and/or for degassing mineral melts, and device for carrying out said method
WO2009122163A1 (en) * 2008-04-04 2009-10-08 Elmelin Limited Furnace lining
WO2020033118A1 (en) * 2018-08-10 2020-02-13 American Iron And Steel Institute Flash ironmaking drop tube furnace system
US11459626B2 (en) 2018-08-10 2022-10-04 American Iron And Steel Institute Flash ironmaking drop tube furnace system
CN112113420A (en) * 2020-09-07 2020-12-22 宁国市宏达电炉有限公司 Induction heating furnace with induction coil gap type heat dissipation

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20021024

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 20050914

R157 Lapse of ip right after 6 years

Effective date: 20080902