JPS556436A - Continuous pickling method of metal strip - Google Patents

Continuous pickling method of metal strip

Info

Publication number
JPS556436A
JPS556436A JP7751178A JP7751178A JPS556436A JP S556436 A JPS556436 A JP S556436A JP 7751178 A JP7751178 A JP 7751178A JP 7751178 A JP7751178 A JP 7751178A JP S556436 A JPS556436 A JP S556436A
Authority
JP
Japan
Prior art keywords
temperature
strip
descaling
bath
metal strip
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
JP7751178A
Other languages
Japanese (ja)
Inventor
Tomoaki Kimura
Mitsuru Kubo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7751178A priority Critical patent/JPS556436A/en
Publication of JPS556436A publication Critical patent/JPS556436A/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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching

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 enable descaling of high performance to be performed with inexpensive running costs by supplying the metal strip of temperature higher than acid solution temperature to a pickling bath and maintaining the acid solution at a high temperature. CONSTITUTION:The temperature of a strip 21 whose leading and trailing ends are connected by a welder 3 is measured with a thermometer 7 and when it is higher than a desired temperature, the strip is passed through a cooling unit 11, after which it is pickled. At this time, the temperature of the strip 21 is controlled by measuring the temperature of the strip 21 immediate before the first pickling bath 12 with a thermometer 10 and sending a command to the cooling unit 11. The metal strip 21 having been controlled to adequate temperature is subsequently passed through pickling baths 12, 13, 14 and is removed of the acid solutions by a water jet washing bath 15, hot water wahing bath 16 and drying oven 17, after which it is taken up to a take-up machine 20. This method enables descaling to be accomplished without consuming large amount of heat energy. Also, the descaling of high performance is accomplished by controlling the speeds of passing and the concentrations of acid solutions in place of temperature controlling of the strip 21.
JP7751178A 1978-06-28 1978-06-28 Continuous pickling method of metal strip Pending JPS556436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7751178A JPS556436A (en) 1978-06-28 1978-06-28 Continuous pickling method of metal strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7751178A JPS556436A (en) 1978-06-28 1978-06-28 Continuous pickling method of metal strip

Publications (1)

Publication Number Publication Date
JPS556436A true JPS556436A (en) 1980-01-17

Family

ID=13635983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7751178A Pending JPS556436A (en) 1978-06-28 1978-06-28 Continuous pickling method of metal strip

Country Status (1)

Country Link
JP (1) JPS556436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064970A3 (en) * 2000-03-01 2001-12-20 Sms Demag Ag Method and installation for hot dip coating metal strips

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064970A3 (en) * 2000-03-01 2001-12-20 Sms Demag Ag Method and installation for hot dip coating metal strips

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