GB1056502A - Method of and apparatus for annealing sheet metal - Google Patents

Method of and apparatus for annealing sheet metal

Info

Publication number
GB1056502A
GB1056502A GB3038165A GB3038165A GB1056502A GB 1056502 A GB1056502 A GB 1056502A GB 3038165 A GB3038165 A GB 3038165A GB 3038165 A GB3038165 A GB 3038165A GB 1056502 A GB1056502 A GB 1056502A
Authority
GB
United Kingdom
Prior art keywords
coils
pipe
base
inert gases
see
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
GB3038165A
Inventor
Frank De Forest Hazen
Howard Henry Nichols
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.)
Hazen Engineering Co
Original Assignee
Hazen Engineering Co
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 Hazen Engineering Co filed Critical Hazen Engineering Co
Priority to GB3038165A priority Critical patent/GB1056502A/en
Publication of GB1056502A publication Critical patent/GB1056502A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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

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)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

<PICT:1056502/C6-C7/1> A box annealing furnace wherein inert gases heated to 1100-1400 DEG F. anneal steel strip or sheet coils comprises an annular refractory base 1 on which is mounted an annulus 2 having radial flow passages 3 with a base plate 4 for supporting the coils, e.g. 5, 6 and 7 separated by convector plates 8 and 9 and crowned by a cover plate 10, a single cover 13 supported on the base, e.g. through a hermetic seal 16, and spaced from the coils to form an annular flow passage around the coils, an injector nozzle 21 extending through opening 19 in the base, a heating device (see Fig. 2, not shown) such as a fuel/air burner for heating the inert gases, e.g. N2 and H2 with or without CO, CO2 and CH4, and delivering them under pressure through pipe 20 to the nozzle 21 for circulation e.g. at 3000-7500 c.f.m. through the eyes of the coils and around the coils at reduced pressure and out through passage 22 for recirculation in pipe 23. After annealing the inert gases may be circulated through a cooling device (see Fig. 3, not shown) to effect rapid cooling e.g. to 300 DEG F. of the annealed coils. A bleeder pipe 26 communicating with a flame detector 27 is provided to indicate that the furnace chamber is free from an oxidizing atmosphere; inert gas is initially supplied through a pipe 24.
GB3038165A 1965-07-16 1965-07-16 Method of and apparatus for annealing sheet metal Expired GB1056502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3038165A GB1056502A (en) 1965-07-16 1965-07-16 Method of and apparatus for annealing sheet metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3038165A GB1056502A (en) 1965-07-16 1965-07-16 Method of and apparatus for annealing sheet metal

Publications (1)

Publication Number Publication Date
GB1056502A true GB1056502A (en) 1967-01-25

Family

ID=10306786

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3038165A Expired GB1056502A (en) 1965-07-16 1965-07-16 Method of and apparatus for annealing sheet metal

Country Status (1)

Country Link
GB (1) GB1056502A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004553A1 (en) * 1978-03-01 1979-10-17 VOEST-ALPINE Aktiengesellschaft Apparatus for heat-treating coils of metal strip
CN114807572A (en) * 2021-01-28 2022-07-29 张正 Novel stainless steel solid solution heat treatment furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004553A1 (en) * 1978-03-01 1979-10-17 VOEST-ALPINE Aktiengesellschaft Apparatus for heat-treating coils of metal strip
CN114807572A (en) * 2021-01-28 2022-07-29 张正 Novel stainless steel solid solution heat treatment furnace
CN114807572B (en) * 2021-01-28 2023-12-01 丽水龙东不锈钢有限公司 Stainless steel solid solution heat treatment furnace

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