GB370903A - Improvements in or relating to electric furnaces - Google Patents

Improvements in or relating to electric furnaces

Info

Publication number
GB370903A
GB370903A GB97631A GB97631A GB370903A GB 370903 A GB370903 A GB 370903A GB 97631 A GB97631 A GB 97631A GB 97631 A GB97631 A GB 97631A GB 370903 A GB370903 A GB 370903A
Authority
GB
United Kingdom
Prior art keywords
muffles
muffle
phase supply
series
relating
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
GB97631A
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.)
KARL SCHERZER
Otto Junker GmbH
Original Assignee
KARL SCHERZER
Otto Junker 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 KARL SCHERZER, Otto Junker GmbH filed Critical KARL SCHERZER
Priority to GB97631A priority Critical patent/GB370903A/en
Publication of GB370903A publication Critical patent/GB370903A/en
Expired 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Tunnel Furnaces (AREA)

Abstract

370,903. Electric resistance furnaces. JUNKER GES., O. and SCHERZER, K., Lammersdorf, Kreis Monschau, Germany. Jan. 12, 1931, No. 976. [Class 39 (iii).] A continuous annealing furnace employs a one-piece smooth-walled muffle A of ceramic material which is elliptic in cross section and in which the resistance wires D are embedded. The material may be fused aluminium oxide. The muffle is surrounded by heat-insulating powder B arranged in a sheet-iron casing C and is provided with a conveyer or with means for pulling wire or strip material therethrough. A plurality of muffles individually controlled may be arranged end to end. Three muffles may be connected in star or delta to a three-phase supply. With a single-phase supply the second and third muffles may be series connected. A single muffle may be shaped longitudinally in the form of a catenary. In Fig. 3 a number of muffles are arranged in series in this form. The muffles are supported at the ends only on bricks F.
GB97631A 1931-01-12 1931-01-12 Improvements in or relating to electric furnaces Expired GB370903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB97631A GB370903A (en) 1931-01-12 1931-01-12 Improvements in or relating to electric furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB97631A GB370903A (en) 1931-01-12 1931-01-12 Improvements in or relating to electric furnaces

Publications (1)

Publication Number Publication Date
GB370903A true GB370903A (en) 1932-04-12

Family

ID=9713831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB97631A Expired GB370903A (en) 1931-01-12 1931-01-12 Improvements in or relating to electric furnaces

Country Status (1)

Country Link
GB (1) GB370903A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767481C (en) * 1936-01-29 1952-08-28 American Gas Furnace Co Process for the continuous carburization and embroidery of work pieces made of iron and iron alloys
CN102534179A (en) * 2012-01-06 2012-07-04 无锡华精新型材料有限公司 Continuous tunnel type annealing furnace structure with heating bottom resistor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767481C (en) * 1936-01-29 1952-08-28 American Gas Furnace Co Process for the continuous carburization and embroidery of work pieces made of iron and iron alloys
CN102534179A (en) * 2012-01-06 2012-07-04 无锡华精新型材料有限公司 Continuous tunnel type annealing furnace structure with heating bottom resistor
CN102534179B (en) * 2012-01-06 2015-04-01 无锡华精新材股份有限公司 Continuous tunnel type annealing furnace structure with heating bottom resistor

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