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DE874454C - Continuous furnace for endless wires or bands - Google Patents

Continuous furnace for endless wires or bands

Info

Publication number
DE874454C
DE874454C DEB8361A DEB0008361A DE874454C DE 874454 C DE874454 C DE 874454C DE B8361 A DEB8361 A DE B8361A DE B0008361 A DEB0008361 A DE B0008361A DE 874454 C DE874454 C DE 874454C
Authority
DE
Germany
Prior art keywords
continuous furnace
bands
endless wires
tubes
wires
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
Application number
DEB8361A
Other languages
German (de)
Inventor
Heinrich Josef Baggeler
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 DEB8361A priority Critical patent/DE874454C/en
Application granted granted Critical
Publication of DE874454C publication Critical patent/DE874454C/en
Expired legal-status Critical Current

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
    • C21D9/56—Continuous furnaces for strip or wire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Resistance Heating (AREA)
  • Tunnel Furnaces (AREA)

Description

Bei den .bisherigen Dürchlaüföfen für Drähte und Bänder läuft das Glühgut durch Lochplatten- oder durch Muffeln aus Schamotteformsteinen, die von außen beheizt werden. Die Lochplatten oder-Muffehnmüssen aber, um genügend dicht gegen eindringende Verbrennungsgase zu sein, eine entsprechend hohe Wandstärke haben. Die Wandstärke, zusammen mit der schlechten Wärmeleitfähigkeit des Schamottematerials bewirken aber einen außerordentlich schlechten thermischen Wirkungsgrad und müssen deshalb, um eine bestimmte Leistung zu erzielen, sehr lang gebaut werden.This works with the previous rotary kilns for wires and strips Annealing material through perforated plates or muffles made of fireclay bricks, which are made by be heated outside. The perforated plates or muffle must, however, be sufficiently tight to be against penetrating combustion gases, have a correspondingly high wall thickness. The wall thickness, along with the poor thermal conductivity of the fireclay material but cause an extremely poor thermal efficiency and must therefore, in order to achieve a certain performance, they must be built very long.

Gemäß der Erfindung bestehen die doppelwandigen Durchlaufrohre aus einem Außenrohr aus Elektrografit als elektrischem Heizelement und einem nicht elektrisch leitenden Innenrohr von hoher Feuerfestigkeit und hoher mechanischer Festigkeit, z. B. aus Porzellan, Sillimanit od. dgl. In der Zeichnung zeigt Fig. r den Querschnitt eines Durchlaufofens mit den in einer feuerfesten Isoliermasse eingebetteten Rohren, Fig. 2- ein Röhr im Querschnitt mit dem Außenrohr aus Elektrografit = und einem Innenrohr aus einem keramischen Werkstoff 2.According to the invention, the double-walled flow tubes consist of an outer tube made of electrographite as an electrical heating element and a non-electrical one conductive inner tube of high fire resistance and high mechanical strength, z. B. made of porcelain, sillimanite or the like. In the drawing, Fig. R shows the cross section a continuous furnace with the pipes embedded in a refractory insulating compound, Fig. 2- a tube in cross section with the outer tube made of electrographite = and a Inner tube made of a ceramic material 2.

Claims (1)

PATENTANSPRUCH: Durchlaufofen für endlose Drähte oder Bänder, dadurch gekennzeichnet, daß das Glühgut durch kombinierte Glührohre gezogen wird, deren Außenrohre. aus .Elektrografit als Heizwiderstand und die Innenrohre aus einem Isolierrohr mit hoher Feuerbeständigkeit und hoher Verschleißfestigkeit, z. B. Sillimanit, Porzellan, Quarz od. dgl., bestehen. . ".PATENT CLAIM: Continuous furnace for endless wires or strips, thereby characterized in that the annealing material is drawn through combined glow tubes, whose Outer tubes. from .Elektrografit as a heating resistor and the inner tubes from an insulating tube with high fire resistance and high wear resistance, e.g. B. Sillimanit, porcelain, Quartz or the like., Exist. . ".
DEB8361A 1950-07-26 1950-07-26 Continuous furnace for endless wires or bands Expired DE874454C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB8361A DE874454C (en) 1950-07-26 1950-07-26 Continuous furnace for endless wires or bands

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB8361A DE874454C (en) 1950-07-26 1950-07-26 Continuous furnace for endless wires or bands

Publications (1)

Publication Number Publication Date
DE874454C true DE874454C (en) 1953-04-23

Family

ID=6955804

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB8361A Expired DE874454C (en) 1950-07-26 1950-07-26 Continuous furnace for endless wires or bands

Country Status (1)

Country Link
DE (1) DE874454C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1224346B (en) * 1963-03-28 1966-09-08 Telefunken Patent Preheating furnace for strip-shaped material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1224346B (en) * 1963-03-28 1966-09-08 Telefunken Patent Preheating furnace for strip-shaped material

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