JPS558441A - One-side oxiding method of steel hoop in one-side plating - Google Patents

One-side oxiding method of steel hoop in one-side plating

Info

Publication number
JPS558441A
JPS558441A JP8048278A JP8048278A JPS558441A JP S558441 A JPS558441 A JP S558441A JP 8048278 A JP8048278 A JP 8048278A JP 8048278 A JP8048278 A JP 8048278A JP S558441 A JPS558441 A JP S558441A
Authority
JP
Japan
Prior art keywords
steel hoop
gas
oxidizing
flow rate
change
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.)
Pending
Application number
JP8048278A
Other languages
Japanese (ja)
Inventor
Hajime Hinoto
Kango Sakai
Kenichi Asakawa
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.)
Nippon Steel Corp
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8048278A priority Critical patent/JPS558441A/en
Publication of JPS558441A publication Critical patent/JPS558441A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

PURPOSE:To make operation simple and enable optimum film to be formed by changing the oxygen concentration in oxidative gas of a fixed flow rate in correspondence to the change of the travelling speed of the steel hoop thereby oxidizing one side of the steel hoop. CONSTITUTION:The oxidizing gas having been controlled to a correct concentration is blown from a nozzle 5 to a steel hoop 1 which has been activated of its surfaces by being heated in a reducing atmosphere and has been cooled to the temperature suited to plating, in a turn-down roll 3 part. Thereby, an oxide film is formed on the surfaces of the steel hoop 1. the excess gas is exhausted to the outside through suction and exhaust ports 6, 6'. In order to prevent the leakage of the oxidizing gas to the reducing atmosphere 2 or snout part 8, inert gas is blown out from the nozzles 7, 7' to seal. In this case, change of the oxidizing conditions and the flow rate of the oxidizing gas are made constant in correspondence to the change in the travelling speed of the steel hoop 1 and the O2 concentration is controlled in performing the oxidation. As a result, the oxidation is performed at the constant seal gas flow rate and suction and exhaust conditions and therefore there are no in-furnace pollutions of the oxidizing gas at all and always good one-side plated steel plates are obtainable.
JP8048278A 1978-07-04 1978-07-04 One-side oxiding method of steel hoop in one-side plating Pending JPS558441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8048278A JPS558441A (en) 1978-07-04 1978-07-04 One-side oxiding method of steel hoop in one-side plating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8048278A JPS558441A (en) 1978-07-04 1978-07-04 One-side oxiding method of steel hoop in one-side plating

Publications (1)

Publication Number Publication Date
JPS558441A true JPS558441A (en) 1980-01-22

Family

ID=13719487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8048278A Pending JPS558441A (en) 1978-07-04 1978-07-04 One-side oxiding method of steel hoop in one-side plating

Country Status (1)

Country Link
JP (1) JPS558441A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211136A (en) * 1975-07-18 1977-01-27 Sumitomo Metal Ind Anticorrosion process for steel
JPS5241133A (en) * 1975-09-30 1977-03-30 Nippon Steel Corp Method of oxidizing only one surface of steel band and apparatus therefor
JPS5633467A (en) * 1979-08-22 1981-04-03 Dowa Mining Co Ltd Copper coating method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211136A (en) * 1975-07-18 1977-01-27 Sumitomo Metal Ind Anticorrosion process for steel
JPS5241133A (en) * 1975-09-30 1977-03-30 Nippon Steel Corp Method of oxidizing only one surface of steel band and apparatus therefor
JPS5633467A (en) * 1979-08-22 1981-04-03 Dowa Mining Co Ltd Copper coating method

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