JPS5613468A - Automatically controlling method for hot dipping amount - Google Patents
Automatically controlling method for hot dipping amountInfo
- 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
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.
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)
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 |
-
1979
- 1979-07-10 JP JP8732979A patent/JPS5827343B2/en not_active Expired
Cited By (4)
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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