GB1071572A - Improvements in metal coating methods and apparatus - Google Patents

Improvements in metal coating methods and apparatus

Info

Publication number
GB1071572A
GB1071572A GB2096664A GB2096664A GB1071572A GB 1071572 A GB1071572 A GB 1071572A GB 2096664 A GB2096664 A GB 2096664A GB 2096664 A GB2096664 A GB 2096664A GB 1071572 A GB1071572 A GB 1071572A
Authority
GB
United Kingdom
Prior art keywords
strip
coating
nozzles
gas
bath
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
GB2096664A
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.)
National Steel Corp
Original Assignee
National 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 National Steel Corp filed Critical National Steel Corp
Publication of GB1071572A publication Critical patent/GB1071572A/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
    • C23C2/20—Strips; Plates

Abstract

In a continuous hot dip process for coating strip such as steel with metal e.g. Zn, Cd, Al, Zn and Pb, the weight of the applied coating metal is controlled by passing the strip in planar configuration through a control zone above the surface of the molten coating bath, in which zone there is no mechanical contact with the strip and the metal coating remains molten and in which a stream of hot gas such as superheated steam is applied across the full width of each of the strip faces at an angle of incidence of 0 DEG -15 DEG above the perpendicular. According to Figures 1, 2 and 3 (not shown) the strip (24) is guided from the coating bath by a sinker roll (25) immersed in the bath and a top roll (26) between nozzles (28) and (29) supplied with superheated steam. Submerged supports (40) and (41), and guide roll (42) and cooling jets may also be provided. The nozzles supplying the hot gas are supported in such a way that the angle of impingement of the gas on the strip, the height above the bath, the gap between the nozzles and the gap between the nozzles and the strip can all be adjusted to control the weight of coating metal. The gas temperature is also controlled e.g. at 550 DEG -850 DEG F. and differential coating weights can be formed on both faces of the sheet by varying the distance of the respective nozzle from the strips and/or by adjusting the rate of gas flow, i.e. gas pressure. The nozzle outlet width is preferably 0.005" to 0.015".
GB2096664A 1963-05-22 1964-05-21 Improvements in metal coating methods and apparatus Expired GB1071572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28247463A 1963-05-22 1963-05-22

Publications (1)

Publication Number Publication Date
GB1071572A true GB1071572A (en) 1967-06-07

Family

ID=23081671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2096664A Expired GB1071572A (en) 1963-05-22 1964-05-21 Improvements in metal coating methods and apparatus

Country Status (3)

Country Link
DE (1) DE1521406B2 (en)
GB (1) GB1071572A (en)
MY (1) MY7100013A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619247A (en) * 1968-08-29 1971-11-09 Bethlehem Steel Corp Method of producing thin, bright unspangled galvanized coatings on ferrous metal strips
JPS5045965A (en) * 1973-08-14 1975-04-24

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288016B (en) * 1994-03-31 1998-05-13 Tomra Systems As Device for generating,detecting and recognizing a contour image of a liquid container
DE19756877A1 (en) * 1997-12-19 1999-07-01 Siemens Ag Method and device for coating a metal strip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619247A (en) * 1968-08-29 1971-11-09 Bethlehem Steel Corp Method of producing thin, bright unspangled galvanized coatings on ferrous metal strips
JPS5045965A (en) * 1973-08-14 1975-04-24
JPS5631918B2 (en) * 1973-08-14 1981-07-24

Also Published As

Publication number Publication date
MY7100013A (en) 1971-12-31
DE1521406A1 (en) 1970-07-16
DE1521406B2 (en) 1971-04-15

Similar Documents

Publication Publication Date Title
US3917888A (en) Coating control
US3499418A (en) Continuous metallic strip hot-dip metal coating apparatus
US4153006A (en) Apparatus for finishing molten metallic coatings
ES422534A1 (en) Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern
US4444814A (en) Finishing method and means for conventional hot-dip coating of a ferrous base metal strip with a molten coating metal using conventional finishing rolls
US3526204A (en) Edge thickness control for liquid coating operation
US3667425A (en) Apparatus for controlling coating thickness
US3981347A (en) Method and apparatus for strand cooling with a flat spray pattern
US2894856A (en) Apparatus for and method of controlling the coating thickness in continuous galvanizing
GB1071572A (en) Improvements in metal coating methods and apparatus
GB2075455A (en) Apparatus and method for supporting a metal strip under a static gas pressure
US4274473A (en) Contour control for planar flow casting of metal ribbon
JPS6070126A (en) Apparatus for cooling underside of metallic plate
KR102431023B1 (en) Methods and Sections for Rapid Cooling of Continuous Lines for Processing Metal Sheets
US3360202A (en) Uniform thin fluid sheet type spray device
US4052234A (en) Method for continuously quenching electrolytic tin-plated steel strip
US3262822A (en) Method for continuous quenching of aluminum strip
US3367804A (en) Method and apparatus for quenching
US3615926A (en) Quench system
US3998182A (en) Continuous metallic strip hot-dip metal coating apparatus
US2546538A (en) Apparatus for handling and brightening metal
US3531334A (en) Quench system
US7011714B2 (en) Method and device for treating the surfaces of metallic strip material, especially for pickling rolled material
GB1127831A (en) Improvements relating to the coating of metals
JPS56102567A (en) Hardening method for aluminum strip