JPS5672165A - Gas wiping method and apparatus using exhaust gas from nonoxidation furnace - Google Patents

Gas wiping method and apparatus using exhaust gas from nonoxidation furnace

Info

Publication number
JPS5672165A
JPS5672165A JP14802779A JP14802779A JPS5672165A JP S5672165 A JPS5672165 A JP S5672165A JP 14802779 A JP14802779 A JP 14802779A JP 14802779 A JP14802779 A JP 14802779A JP S5672165 A JPS5672165 A JP S5672165A
Authority
JP
Japan
Prior art keywords
pressure
gas
furnace
exhaust gas
nonoxidation
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
JP14802779A
Other languages
Japanese (ja)
Other versions
JPS5747261B2 (en
Inventor
Tetsuo Arimura
Kazuo Takagi
Shigeru Tsukamoto
Hitoshi Ogoshi
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.)
Chugai Ro Co Ltd
Hitachi Ltd
Nippon Steel Nisshin Co Ltd
Original Assignee
Chugai Ro Co Ltd
Hitachi Ltd
Nisshin Steel Co 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 Chugai Ro Co Ltd, Hitachi Ltd, Nisshin Steel Co Ltd filed Critical Chugai Ro Co Ltd
Priority to JP14802779A priority Critical patent/JPS5672165A/en
Publication of JPS5672165A publication Critical patent/JPS5672165A/en
Publication of JPS5747261B2 publication Critical patent/JPS5747261B2/ja
Granted 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

Abstract

PURPOSE:To save energy and enhance the quality of hot dipping by sucking exhaust gas from a nonoxidation furnace and spraying it on the surface of a steel strip sent out of a molten metal bath after raising the gas pressure. CONSTITUTION:Exhaust gas from nonoxidation furnace 1 in the hot dipping line is sucked with exhaust fan 5 through heat exchanger 4. At this time, in order to prevent unfavorable influence from being exerted on the atmosphere in furnace 1 owing to an abnormal drop in the internal pressure of furnace 1 by the suction of fan 5, pressure regulating valve 9 is automatically regulated in accordance with a detected signal from pressure detector 8. The gas from fan 5 is then raised in pressure and temp. with high temp. blower 7. This gas is sprayed from nozzles 2 of the gas wiping unit on steel strip S sent out of the molten metal bath to make the hot dipping thickness uniform. The spraying pressure is detected with pressure detector 10, and delivery pressure regulating valve 11 is controlled so that exhaust gas of a predetermined pressure is sprayed from nozzles 2 by a predetermined vol.
JP14802779A 1979-11-14 1979-11-14 Gas wiping method and apparatus using exhaust gas from nonoxidation furnace Granted JPS5672165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14802779A JPS5672165A (en) 1979-11-14 1979-11-14 Gas wiping method and apparatus using exhaust gas from nonoxidation furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14802779A JPS5672165A (en) 1979-11-14 1979-11-14 Gas wiping method and apparatus using exhaust gas from nonoxidation furnace

Publications (2)

Publication Number Publication Date
JPS5672165A true JPS5672165A (en) 1981-06-16
JPS5747261B2 JPS5747261B2 (en) 1982-10-08

Family

ID=15443466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14802779A Granted JPS5672165A (en) 1979-11-14 1979-11-14 Gas wiping method and apparatus using exhaust gas from nonoxidation furnace

Country Status (1)

Country Link
JP (1) JPS5672165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258539A2 (en) * 2001-05-16 2002-11-20 SMS Demag AG Process and apparatus for coating a metallic strip espescially a cold rolled steel strip

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134902U (en) * 1974-09-09 1976-03-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134902U (en) * 1974-09-09 1976-03-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258539A2 (en) * 2001-05-16 2002-11-20 SMS Demag AG Process and apparatus for coating a metallic strip espescially a cold rolled steel strip
EP1258539A3 (en) * 2001-05-16 2004-01-07 SMS Demag AG Process and apparatus for coating a metallic strip espescially a cold rolled steel strip
US6800327B2 (en) 2001-05-16 2004-10-05 Sms Demag Aktiengesellschaft Method and apparatus for coating metal strip, particularly cold-rolled steel strip

Also Published As

Publication number Publication date
JPS5747261B2 (en) 1982-10-08

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