EP0108328B1 - Continuous annealing apparatus - Google Patents

Continuous annealing apparatus Download PDF

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Publication number
EP0108328B1
EP0108328B1 EP19830110631 EP83110631A EP0108328B1 EP 0108328 B1 EP0108328 B1 EP 0108328B1 EP 19830110631 EP19830110631 EP 19830110631 EP 83110631 A EP83110631 A EP 83110631A EP 0108328 B1 EP0108328 B1 EP 0108328B1
Authority
EP
European Patent Office
Prior art keywords
steel strip
hearth
roll
rolls
cylindrical
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
EP19830110631
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0108328A1 (en
Inventor
Takaaki C/O Research Laboratories Hira
Hideo C/O Research Laboratories Abe
Kouichi C/O Hanshin Works Tahara
Yuji C/O Chiba Works Shimoyama
Fumiya C/O Chiba Works Yanagishima
Toru C/O Research Laboratories Sasaki
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of EP0108328A1 publication Critical patent/EP0108328A1/en
Application granted granted Critical
Publication of EP0108328B1 publication Critical patent/EP0108328B1/en
Expired legal-status Critical Current

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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
    • C21D9/562—Details
    • C21D9/563—Rolls; Drums; Roll arrangements

Definitions

  • Buckling can be avoided by forming the hearth rolls as flat cylinders without crowns, however, the steel strip then meanders easily, as described above.
  • the inventors have carried out experiments in which the shape of the hearth rolls 50, and the width and thickness of the steel strip 60 were changed in various ways to determine the mechanism by which buckling is produced in the steel strip 60. As a result, they discovered that buckling occurs immediately before the steel strip 60 winds around the hearth roll 50, and again immediately after.
  • An extra-low carbon steel (C 0.003%) 0.7 mm thick and 1,280 mm wide was subjected to heat treatment at a rate of 200 m/min. The results are shown in Table 1, Fig. 18 and Fig. 19.
  • Example 1 (conventional annealing furnace), buckling was produced on the side advancing toward the hearth roll when the mean tensile stress in the steel strip was 0.4 kg/mm 2 .

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)
EP19830110631 1982-10-28 1983-10-25 Continuous annealing apparatus Expired EP0108328B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18825782A JPS5980734A (ja) 1982-10-28 1982-10-28 連続焼鈍装置
JP188257/82 1982-10-28

Publications (2)

Publication Number Publication Date
EP0108328A1 EP0108328A1 (en) 1984-05-16
EP0108328B1 true EP0108328B1 (en) 1988-01-13

Family

ID=16220514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830110631 Expired EP0108328B1 (en) 1982-10-28 1983-10-25 Continuous annealing apparatus

Country Status (4)

Country Link
EP (1) EP0108328B1 (enrdf_load_stackoverflow)
JP (1) JPS5980734A (enrdf_load_stackoverflow)
CA (1) CA1201288A (enrdf_load_stackoverflow)
DE (1) DE3375305D1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131925A (ja) * 1983-12-19 1985-07-13 Kawasaki Steel Corp 連続焼鈍装置
JPS6036626A (ja) * 1983-08-06 1985-02-25 Kawasaki Steel Corp 連続焼鈍装置
JPH072975B2 (ja) * 1986-02-22 1995-01-18 新日本製鐵株式会社 通板性に優れた連続焼鈍装置
JPS6356886A (ja) * 1986-08-28 1988-03-11 Fuji Elelctrochem Co Ltd 分割式ヘツド支持機構
CN110331276B (zh) * 2019-07-17 2020-12-15 首钢京唐钢铁联合有限责任公司 一种退火炉防瓢曲的起车方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553473A (en) * 1949-06-01 1951-05-15 Goodrich Co B F Belt-aligning apparatus
GB735574A (en) * 1952-04-25 1955-08-24 United States Steel Corp Method and apparatus for continuously centering a moving strip
US2724492A (en) * 1952-10-30 1955-11-22 United Electric Coal Companies Endless belt aligner

Also Published As

Publication number Publication date
CA1201288A (en) 1986-03-04
EP0108328A1 (en) 1984-05-16
JPS5980734A (ja) 1984-05-10
DE3375305D1 (en) 1988-02-18
JPS6235466B2 (enrdf_load_stackoverflow) 1987-08-01

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