JPS5613468A - Automatically controlling method for hot dipping amount - Google Patents

Automatically controlling method for hot dipping amount

Info

Publication number
JPS5613468A
JPS5613468A JP8732979A JP8732979A JPS5613468A JP S5613468 A JPS5613468 A JP S5613468A JP 8732979 A JP8732979 A JP 8732979A JP 8732979 A JP8732979 A JP 8732979A JP S5613468 A JPS5613468 A JP S5613468A
Authority
JP
Japan
Prior art keywords
amount
strip
nozzle
galvanizing
hot dipping
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.)
Granted
Application number
JP8732979A
Other languages
Japanese (ja)
Other versions
JPS5827343B2 (en
Inventor
Kazuo Maehara
Kenji Kasai
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 JP8732979A priority Critical patent/JPS5827343B2/en
Publication of JPS5613468A publication Critical patent/JPS5613468A/en
Publication of JPS5827343B2 publication Critical patent/JPS5827343B2/en
Expired 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
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material

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 control the amount of metal stuck to a steel strip by hot dipping to a predetermined value in all points by performing feedback control whenever the strip moves by a length equal to the distance from the position of a nozzle for spraying a hot dipping amount controlling gas to the position of a hot dipping amount detector when the strip is hot dipped continuously. CONSTITUTION:When steel strip 2 is galvanized continuously by passing through molten Zn bath 1, feedforward control for setting the pressure of nozzle 3 for spraying a galvanizing amount controlling gas in accordance with a set galvanizing amount and the speed of strip 2 passing through bath 1 is combined with feedback control for controlling the gas pressure of nozzle 3 in accordance with the difference between the set and measured values of galvanizing amount, controlling the amount of molten Zn stuck to strip 2. Whenever strip 2 moves by a length equal to the distance from the position of nozzle 3 to the position of galvanizing amount detector 5, the actual galvanizing amount is obtd. by scanning in the lateral direction with detector 5 and in accordance with the difference between the measured valves at central and edge portions the spraying pressure of nozzle 3 is regulated to stick the desired amount of Zn to the whole surface of the strip.
JP8732979A 1979-07-10 1979-07-10 Automatic control method for plating coating amount Expired JPS5827343B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8732979A JPS5827343B2 (en) 1979-07-10 1979-07-10 Automatic control method for plating coating amount

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8732979A JPS5827343B2 (en) 1979-07-10 1979-07-10 Automatic control method for plating coating amount

Publications (2)

Publication Number Publication Date
JPS5613468A true JPS5613468A (en) 1981-02-09
JPS5827343B2 JPS5827343B2 (en) 1983-06-08

Family

ID=13911823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8732979A Expired JPS5827343B2 (en) 1979-07-10 1979-07-10 Automatic control method for plating coating amount

Country Status (1)

Country Link
JP (1) JPS5827343B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678645A1 (en) * 1991-07-01 1993-01-08 Lorraine Laminage METHOD FOR REGULATING A METALLURGICAL TREATMENT PERFORMED ON A RUNNING PRODUCT AND DEVICE FOR IMPLEMENTING SAME.
KR100261776B1 (en) * 1995-12-21 2000-07-15 이구택 Method of preventing build-up for coating sheet
KR20020049465A (en) * 2000-12-19 2002-06-26 이구택 Method for controlling the amount of the strip plating

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678645A1 (en) * 1991-07-01 1993-01-08 Lorraine Laminage METHOD FOR REGULATING A METALLURGICAL TREATMENT PERFORMED ON A RUNNING PRODUCT AND DEVICE FOR IMPLEMENTING SAME.
US5370902A (en) * 1991-07-01 1994-12-06 Sollac Regulating method for a metallurgical treatment carried out on a moving product and device for its implementation
KR100261776B1 (en) * 1995-12-21 2000-07-15 이구택 Method of preventing build-up for coating sheet
KR20020049465A (en) * 2000-12-19 2002-06-26 이구택 Method for controlling the amount of the strip plating

Also Published As

Publication number Publication date
JPS5827343B2 (en) 1983-06-08

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