GB1074305A - Method and apparatus for controlling the alloying of zinc coatings - Google Patents

Method and apparatus for controlling the alloying of zinc coatings

Info

Publication number
GB1074305A
GB1074305A GB35331/64A GB3533164A GB1074305A GB 1074305 A GB1074305 A GB 1074305A GB 35331/64 A GB35331/64 A GB 35331/64A GB 3533164 A GB3533164 A GB 3533164A GB 1074305 A GB1074305 A GB 1074305A
Authority
GB
United Kingdom
Prior art keywords
alloying
heater
strip
temperature
photo
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.)
Expired
Application number
GB35331/64A
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.)
Armco Inc
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of GB1074305A publication Critical patent/GB1074305A/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
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/38—Wires; Tubes
    • 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
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Coating With Molten Metal (AREA)
  • Coating Apparatus (AREA)

Abstract

Metal strip, after leaving a zinc coating bath, is heated to alloying temperature by a first heater and then maintained at this temperature by heating from within by a second heater, a third heater being controlled automatically in response to reflectivity of the strip at the end of its run. As shown, a steel strip 12a emerges coated with zinc from a bath 11 and is heated to alloying temperature by a gas or electric heater 16 under the control of a radiation pyrometer 17. An induction heater 18 is provided to keep up the temperature of the strip until alloying is complete. Light from sources 19a scattered from a plurality of zones across the width of the strip before <PICT:1074305/C6-C7/1> induction heating, influence a plurality of photo-cells 19 positioned to receive only scattered light. These photo-cells control correspondingly positioned heaters 21 so that dull areas, indicating premature alloying, are automatically eliminated by change in the heating. Similarly a plurality of photo-cells 20, positioned to receive light reflected from the strip after induction heating, control the heaters 21 so that bright areas, indicating that alloying is not complete, are eliminated. If the total power supplied to heaters 21 is increased or decreased to predetermined limits, a meter increases or decreases the input to the induction heater.
GB35331/64A 1963-09-03 1964-08-28 Method and apparatus for controlling the alloying of zinc coatings Expired GB1074305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US306123A US3307968A (en) 1963-09-03 1963-09-03 Method and apparatus for controlling the alloying of zinc coatings

Publications (1)

Publication Number Publication Date
GB1074305A true GB1074305A (en) 1967-07-05

Family

ID=23183929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35331/64A Expired GB1074305A (en) 1963-09-03 1964-08-28 Method and apparatus for controlling the alloying of zinc coatings

Country Status (5)

Country Link
US (1) US3307968A (en)
AT (1) AT272789B (en)
BE (1) BE652482A (en)
DE (1) DE1298825C2 (en)
GB (1) GB1074305A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508066A (en) * 1966-06-16 1970-04-21 Marconi Co Ltd Apparatus comprising light-electric translating device for measuring speed of moving member having an ordinary surface
IN141416B (en) * 1973-06-04 1977-02-26 Svenska Rotor Maskiner Ab
US3975556A (en) * 1973-09-19 1976-08-17 Armco Steel Corporation Method for preventing coating metal pickup on hot-dip coating line rolls
JPS5248031B2 (en) * 1974-05-13 1977-12-07
US4807559A (en) * 1987-09-02 1989-02-28 Ajax Magnethermic Corporation Apparatus for alloying of coatings
AT397814B (en) * 1992-03-31 1994-07-25 Voest Alpine Ind Anlagen METHOD FOR GALVANIZING A TAPE AND SYSTEM FOR IMPLEMENTING THE METHOD
AT397815B (en) * 1992-03-31 1994-07-25 Voest Alpine Ind Anlagen METHOD FOR GALVANIZING A TAPE AND SYSTEM FOR IMPLEMENTING THE METHOD
CA2190410C (en) * 1995-12-06 2000-04-25 Mitrajyoti Deka Method and apparatus for controlling galvanneal induction furnace operation
BE1011425A3 (en) * 1996-04-29 1999-09-07 Centre Rech Metallurgique Method of coating a steel strip by hot-dip galvanising
DE19822156A1 (en) * 1998-05-16 1999-11-18 Schloemann Siemag Ag Method and device for performing the annealing of a galvannealing process
DE19838332A1 (en) * 1998-08-24 2000-03-02 Schloemann Siemag Ag Quality monitoring of galvannealed coating of steel strip involves determining the visual appearance of the coating as a variable relevant to its quality and using it for controlling the annealing furnace
DE10021948B4 (en) * 2000-05-05 2004-02-19 Thyssenkrupp Stahl Ag Process and plant for galvanizing a steel strip
WO2009021279A1 (en) * 2007-08-10 2009-02-19 Bluescope Steel Limited Coating line control
MX2014001607A (en) * 2011-08-26 2014-05-01 Nippon Steel & Sumitomo Metal Corp Alloying location determination method, alloying location determination device, and recording medium.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922188A (en) * 1927-06-16 1933-08-15 Westinghouse Electric & Mfg Co Inspection device
US2947212A (en) * 1956-04-30 1960-08-02 American Brass Co Method of detecting surface conditions of sheet metal
US2986808A (en) * 1958-08-04 1961-06-06 Armco Steel Corp Steel body having alloyed zinc coating and method of producing such coating
US3058840A (en) * 1959-04-16 1962-10-16 Electric Furnace Co Induction strip heating apparatus

Also Published As

Publication number Publication date
DE1298825C2 (en) 1973-08-23
BE652482A (en) 1964-12-16
AT272789B (en) 1969-07-25
US3307968A (en) 1967-03-07
DE1298825B (en) 1969-07-03

Similar Documents

Publication Publication Date Title
GB1074305A (en) Method and apparatus for controlling the alloying of zinc coatings
GB1331116A (en) Control of furnaces
GB1089529A (en) Process-heating control system
GB1223737A (en) Control system for microwave heater apparatus
GB1152935A (en) Method and apparatus for making Glass
JPS5581378A (en) Heat roller fixing device
GB1060622A (en) Improvements relating to a method of melting and supplying glass along a feeder duct
US2788175A (en) Furnace control system
ES319495A1 (en) Procedure for the thermal regulation of a continuous installation of refining a metal liquid bath. (Machine-translation by Google Translate, not legally binding)
US3065324A (en) Control system for billet heaters
GB1085744A (en) Hot dip galvanizing process
KR100241023B1 (en) Method of controlling steelstrip temperature with heat treatment furnace
GB918358A (en) Method of making tin plate
JPS5573830A (en) Plate temperature control method of metal strip continuous heating unit
JPS5672134A (en) Control of heating furnace and its controlling device
JPS5573831A (en) Plate temperature control method
GB787844A (en) Improvements in or relating to the heat treatment of metal objects in continuous heating furnaces
Kyung et al. Development of infrared ray curing technology at continuous coil coating line
CH375866A (en) Boiler for central heating installation and hot water production
JPS57175039A (en) Hot forming and hot press
JPS57180124A (en) Heating method for resistfilm by microwave
JPS5623236A (en) Controlling method for heating of annealing furnace
SU904205A2 (en) Device for regulating thermal mode of holding induction apparatus
JPS602634A (en) Continuous heating method of steel strip
ES228431A1 (en) A method to heat uniformly glass bodies of a composition and a thickness given (Machine-translation by Google Translate, not legally binding)