GB1170057A - Method of Processing Steel Sheet or Strip prior to Surface Treatment - Google Patents

Method of Processing Steel Sheet or Strip prior to Surface Treatment

Info

Publication number
GB1170057A
GB1170057A GB5387566A GB5387566A GB1170057A GB 1170057 A GB1170057 A GB 1170057A GB 5387566 A GB5387566 A GB 5387566A GB 5387566 A GB5387566 A GB 5387566A GB 1170057 A GB1170057 A GB 1170057A
Authority
GB
United Kingdom
Prior art keywords
steel
furnace
atmosphere
steel sheet
oxide layer
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
GB5387566A
Inventor
Charles Peter Brittain
John Perry
Laurence Hadyn Fairbank
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB5387566A priority Critical patent/GB1170057A/en
Publication of GB1170057A publication Critical patent/GB1170057A/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
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • 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

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

1,170,057. Annealing steel sheet; coating with metals. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov.29, 1967 [Dec.1, 1966], No. 53875/66. Headings C7F and C7N. Steel sheet or strip which is to be surface treated by hot dip coating is passed firstly through a direct-fired furnace in which the fuel-air ratio is controlled to produce an atmosphere such that there is formed on the steel an oxide layer not greater than 10<SP>-5</SP> inches thick in addition to any surface layer that may previously have been present; the steel is then passed through a second furnace having a mildly reducing atmosphere wherein the oxide layer is reduced. The atmosphere in the first furnace may contain oxygen in an amount corresponding to not more than 10<SP>-9</SP> atmosphere pressure in contact with the steel, while the furnace may operate at 1100‹ -1500‹C. to give a steel exit temperature in the range 400‹ - 950‹C. The second furnace may be heated electrically or by radiant tubes and the atmosphere therein may consist of nitrogen or inert gas containing not more than 15% of hydrogen. The steel may subsequently pass through a cooling zone and one or more holding or heat-treatment furnaces before entering a galvanizing tank.
GB5387566A 1966-12-01 1966-12-01 Method of Processing Steel Sheet or Strip prior to Surface Treatment Expired GB1170057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5387566A GB1170057A (en) 1966-12-01 1966-12-01 Method of Processing Steel Sheet or Strip prior to Surface Treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5387566A GB1170057A (en) 1966-12-01 1966-12-01 Method of Processing Steel Sheet or Strip prior to Surface Treatment

Publications (1)

Publication Number Publication Date
GB1170057A true GB1170057A (en) 1969-11-12

Family

ID=10469269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5387566A Expired GB1170057A (en) 1966-12-01 1966-12-01 Method of Processing Steel Sheet or Strip prior to Surface Treatment

Country Status (1)

Country Link
GB (1) GB1170057A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2282471A1 (en) * 1974-08-22 1976-03-19 Armco Steel Corp PROCESS FOR THE PREPARATION OF A STRIP OF CARBON STEEL WITH A VIEW TO THE DEPOSIT OF A QUENCH COATING WITHOUT FLUX
FR2470803A1 (en) * 1979-12-05 1981-06-12 Nippon Steel Corp METHOD OF CONTINUOUSLY ANNUCING A LOW CARBON NUT STEEL STRIP
EP2009127A1 (en) * 2007-06-29 2008-12-31 ArcelorMittal France Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2282471A1 (en) * 1974-08-22 1976-03-19 Armco Steel Corp PROCESS FOR THE PREPARATION OF A STRIP OF CARBON STEEL WITH A VIEW TO THE DEPOSIT OF A QUENCH COATING WITHOUT FLUX
USRE29726E (en) * 1974-08-22 1978-08-08 Armco Steel Corporation Method of coating carbon steel
FR2470803A1 (en) * 1979-12-05 1981-06-12 Nippon Steel Corp METHOD OF CONTINUOUSLY ANNUCING A LOW CARBON NUT STEEL STRIP
GB2070072A (en) * 1979-12-05 1981-09-03 Nippon Steel Corp Continuous annealing of cold-rolled low carbon steel strip
EP2009127A1 (en) * 2007-06-29 2008-12-31 ArcelorMittal France Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation
WO2009004426A1 (en) * 2007-06-29 2009-01-08 Arcelormittal France Process for manufacturing a galvanized or a galvannealed steel sheet by dff regulation
US8470102B2 (en) 2007-06-29 2013-06-25 Arcelormittal France Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation

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