EP1760166A2 - Stahlrohr mit verbesserter Korrosionbeständigkeit und Verfahren zur Herstellung - Google Patents

Stahlrohr mit verbesserter Korrosionbeständigkeit und Verfahren zur Herstellung Download PDF

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Publication number
EP1760166A2
EP1760166A2 EP06116733A EP06116733A EP1760166A2 EP 1760166 A2 EP1760166 A2 EP 1760166A2 EP 06116733 A EP06116733 A EP 06116733A EP 06116733 A EP06116733 A EP 06116733A EP 1760166 A2 EP1760166 A2 EP 1760166A2
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EP
European Patent Office
Prior art keywords
steel tube
plating
alloy
tube
resistance
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
EP06116733A
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English (en)
French (fr)
Other versions
EP1760166A3 (de
EP1760166B1 (de
Inventor
Gi Hyeoug Kim
Sun Chang Kim
Jae Pyeong Sim
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.)
Korea Bundy Co Ltd
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Korea Bundy Co Ltd
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Application filed by Korea Bundy Co Ltd filed Critical Korea Bundy Co Ltd
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Publication of EP1760166A3 publication Critical patent/EP1760166A3/de
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Publication of EP1760166B1 publication Critical patent/EP1760166B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • 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
    • 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
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • 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
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the 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
    • C23C2/003—Apparatus
    • C23C2/0036—Crucibles
    • C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
    • C23C2/00362—Details related to seals, e.g. magnetic means
    • 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
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • 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
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
    • 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
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0224—Two or more thermal pretreatments
    • 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
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
    • 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
    • C23C2/12—Aluminium 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
    • C23C2/14—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
    • 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
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • 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
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/60—Adding a layer before coating
    • B05D2350/65—Adding a layer before coating metal layer

Definitions

  • the surface of the plating layer is treated with chromium (III).
  • the surface of the plating layer is coated with a nylon resin.
  • the steel tube manufactured by the above-described manufacturing method has a uniform surface and improved corrosion-resistance.
  • the steel tube 1 brought in the steel tube manufacturing apparatus is straightened or uncoiled by an uncoiler 3, and the surface of the steel tube 1 is chemically treated in a chemical treatment apparatus 5 with a solution containing various kinds of acids or surfactants. Through this process, foreign substances on the surface of the steel tube can be removed. Following the chemical treatment, oxidated substances attached to the surface of the steel tube are physically removed through high-speed rotation of a wire brush for example. Later, the surface of the steel tube is cleansed by water and air.
  • the steel tube 1 passes through an apparatus for manufacturing a steel tube excellent in corrosion-resistance, in which the apparatus is constituted by a preheating apparatus 7, a pre-treating apparatus 10, a plating apparatus 20 and a resin coating apparatus 18.
  • the apparatus is constituted by a preheating apparatus 7, a pre-treating apparatus 10, a plating apparatus 20 and a resin coating apparatus 18.
  • the concentration of hydrogen gas, which is a reducing gas, in the hydrogen-nitrogen mixed gas ranges 5-25%, and the mixed gas is injected approximately three times as much of the internal volume of the tube 11 at atmospheric pressure.
  • the creation of a reduction atmosphere prevents the surface of the heated steel tube from getting easily oxidated to black, and helps the plating process (to be described) performed more stably.
  • the plating apparatus 20 is for plating the surface of the steel tube 1 with a corrosion resistant alloy.
  • the plating apparatus 20 includes a heater 22 and a port 21 for storing a molten alloy.
  • the alloy further contains 0.1-1.6 wt% of silicon.
  • the path the steel tube 11 takes to pass through the plating part 21a is disposed vertically. That is, the steel tube 11 moves vertically between an upper guide roller 31 and a lower guide roller 30.
  • This constitution allows the gravity to help the plating process for prevention of asymmetric plating, and ensures that a uniform plating layer is formed in a circumferential direction.
  • the steel tube 1 After rising vertically, the steel tube 1 is descended at an angle of predetermined degrees by the upper guide roller 31 for the next process.
  • the steel tube 1 arrives at a horizontal path again, it is cooled by an air cooling and water cooling apparatus 15. This cooling process involves air blasting and water spray quenching onto the surface of the steel tube.
  • Fig. 3 is a cross-sectional view of a steel tube with superior corrosion-resistance, according to another embodiment of the present invention.
  • a separator 24 for defming an upper space is installed inside the port 21, and the level block 26 is vertically movably mounted on one side of the separator 24.
  • the separator 24 prevents the fluctuation of the level of a molten alloy around the plating part 21 due to the vertical movement of the level block 26. For instance, when the level block 26 descends and sinks in a molten alloy, the level of the molten alloy increases and the alloy flows into the plating parts. On the other hand, when the level block 26 ascends, the level of the molten alloy decreases and no alloy is supplied to the plating part 21a.
  • the guide pipe 40 is connected to the case surrounding the lower guide roller 30, and an inert gas such as nitrogen is fed into the guide pipe 40 to maintain a 0.1-0.3 bar high-pressure state therein. Also, the upper end of the guide pipe 40 communicates with the lower nozzle apparatus 41, making the lower nozzle apparatus 41 in high-pressure state. In this manner, the molten alloy flown into the plating part 21a is not easily leaked downward.
  • the internal pressure of the pressure control unit including the guide pipe 40 and the lower nozzle apparatus 41 it becomes possible to uniformly plate the molten alloy on the surface of the steel tube that passes through the plating part 21 and travels in the vertical direction, and to prevent the leakage of the alloy in the downward direction.
  • the alloy can be uniformly plated over the surface of the steel tube 1 as it passes through the plating part 21 a.
  • the molten alloy that is plated on the surface of the steel tube 1 flows to one side and therefore, the thickness of plating on the surface of the steel tube is not asymmetric but uniform.
  • an upper nozzle apparatus 34 for spraying air or other mixed gas toward the steel tube is installed at the upper side of the plating part 21a.
  • This upper nozzle apparatus 34 may have a constitution that enables to provide a very small amount of hydrogen gas to the steel tube and cause a flame therein for antioxidation.
  • the upper nozzle apparatus 34 may be used for blasting an inert gas such as nitrogen toward the steel tube 1 to adjust the thickness of the alloy plating used for the steel tube.
  • At least one tube-shaped cooling apparatus 32 encompassing the steep tube is disposed at the traveling path of the steel tube 1. This tube-shaped cooling apparatus 32 provides an air blast for cooling the surface of the steel tube 1 below the predetermined temperature.
  • the upper guide roller 31 is disposed at the upper end of the traveling path of the steel tube 1.
  • the steel tube 1 is bent by the upper guide roller 31 at an angle of about 30 degrees, and moves to the next cooling apparatus.
  • the subsequent processes from here are same as the ones described before referring to Fig. 1.
  • a steel tube formed through a milling process is preheated (S10).
  • the surface of the steel tube becomes sufficiently flexible to be plated with an alloy.
  • the steep tube is preheated to a temperature higher than 600°C.
  • the reduction atmosphere is created while the temperature of the preheated steel tube is being maintained above the predetermined temperature (S20).
  • the reduction atmosphere can be created by injecting hydrogen-nitrogen mixed gas around the steel tube.
  • the alloy For plating, 55 wt% of aluminum and 43-45 wt% of zinc alloy is melted, and the molten Al-Zn alloy is plated over the surface of the steel tube (S30). Desirably, the alloy further contains 0.1-1.6 wt% silicon.
  • the surface of the alloy plated steel tube is coated with a resin (S50).
  • a resin S50
  • a colorless nano-resin is used for coating the surface of the steel tube.
  • the resin contains a nylon resin.
  • chromating (III) process is performed in advance as part of the pretreatment for coating the steel tube with the resin.
  • the chromating process prevents discoloring of the steel tube and provides good appearance to the steel tube.
  • the steel tube with superior corrosion-resistance and its manufacturing method of the present invention yield the following advantages.
  • the Al-Zn alloy can be uniformly plated over the surface of the steel tube along its circumferential direction.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP06116733.4A 2005-09-02 2006-07-06 Verfahren zur Herstellung eines Stahlrohres mit verbesserter Korrosionbeständigkeit Ceased EP1760166B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050081692A KR100667174B1 (ko) 2005-09-02 2005-09-02 강관의 제조장치 및 제조방법

Publications (3)

Publication Number Publication Date
EP1760166A2 true EP1760166A2 (de) 2007-03-07
EP1760166A3 EP1760166A3 (de) 2008-04-16
EP1760166B1 EP1760166B1 (de) 2016-09-14

Family

ID=37387310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06116733.4A Ceased EP1760166B1 (de) 2005-09-02 2006-07-06 Verfahren zur Herstellung eines Stahlrohres mit verbesserter Korrosionbeständigkeit

Country Status (4)

Country Link
EP (1) EP1760166B1 (de)
JP (1) JP4423273B2 (de)
KR (1) KR100667174B1 (de)
CN (1) CN1924075B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10253418B2 (en) 2012-04-17 2019-04-09 Arcelormittal Investigacion Y Desarrollo, S.L. Steel sheet provided with a coating offering sacrificial cathodic protection, method for the production of a part using such a sheet, and resulting part

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Publication number Priority date Publication date Assignee Title
KR100988490B1 (ko) * 2008-06-26 2010-10-20 포스코강판 주식회사 용융 알루미늄-아연 도금 스테인레스 강판의 제조방법
KR101188855B1 (ko) 2010-02-26 2012-10-09 한국과학기술원 보강 금속 파이프의 제조 방법 및 장치
KR101094185B1 (ko) 2011-01-28 2011-12-14 (주)금강 피복 금속관의 제조방법 및 그 제조장치
JP5824868B2 (ja) * 2011-05-24 2015-12-02 新日鐵住金株式会社 亜鉛系めっき鋼材又は亜鉛系めっき鋼製成形品の製造方法
KR101166886B1 (ko) 2012-04-23 2012-07-18 (주)금강 환형으로 권취가 용이한 금속 수지 복합관 및, 그 제조방법
CN103361587B (zh) * 2013-07-04 2015-12-09 富通集团有限公司 一种铜杆生产方法
KR101545603B1 (ko) 2014-11-24 2015-08-20 김장현 성형 온도 보정형 온간 드로우 벤딩 장치
CN105015743A (zh) * 2015-07-13 2015-11-04 苏州金业船用机械厂 一种高强度耐腐蚀性螺旋桨壳体
KR101711858B1 (ko) * 2015-12-24 2017-03-03 주식회사 포스코 도금 장치 및 도금 방법
CN113005394B (zh) * 2021-02-22 2021-12-07 山东农业大学 一种基于稀土催渗碳氮硼共渗的j55钢管加工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559280A (en) 1968-03-13 1971-02-02 Allied Tube & Conduit Corp Method and apparatus for the continuous forming, galvanizing and coloring of tubing

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738312A (en) * 1971-12-28 1973-06-12 Bethlehem Steel Corp Molten metal bath level maintenance system
JPS6058787B2 (ja) 1981-03-10 1985-12-21 興国鋼線索株式会社 線状体の高速浸漬被覆方法およびその装置
JPS59193278A (ja) * 1983-04-14 1984-11-01 Nisshin Steel Co Ltd 塗装下地用亜鉛−アルミニウム系複合溶融めつき鋼板
US4621399A (en) * 1985-12-18 1986-11-11 Allied Tube & Conduit Corporation Tube-coating method and apparatus therefor
TW199911B (de) * 1991-12-04 1993-02-11 Armco Steel Co Lp
US5494706A (en) * 1993-06-29 1996-02-27 Nkk Corporation Method for producing zinc coated steel sheet
CA2131059C (en) 1993-09-08 2001-10-30 William A. Carter Hot dip coating method and apparatus
WO1996038599A1 (fr) * 1995-05-29 1996-12-05 M3D, Societe Anonyme Procede et dispositif pour revetir une bande metallique d'un metal ou d'un alliage a plus bas point de fusion ou de liquide que celui du materiau constituant la bande
CA2225537C (en) * 1996-12-27 2001-05-15 Mitsubishi Heavy Industries, Ltd. Hot dip coating apparatus and method
US6428851B1 (en) * 2000-03-01 2002-08-06 Bethlehem Steel Corporation Method for continuous thermal deposition of a coating on a substrate
ES2300670T3 (es) 2000-08-18 2008-06-16 Ti Group Automotive Systems Limited Metodo de metalizado de una tira metalica para su uso en la fabricacion de un tubo de paredes multiples.
AU2056402A (en) * 2000-09-25 2002-04-02 Chemteall Gmbh Method for coating metallic surfaces and use of substrates coated in such a way or coatings produced in such a way
JP2003166078A (ja) * 2001-11-30 2003-06-13 Maruyasu Industries Co Ltd 耐食性被覆層を有する金属管
US6598287B1 (en) * 2002-01-24 2003-07-29 Western Tube & Conduit Corporation Apparatus and method for sizing a galvanized tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559280A (en) 1968-03-13 1971-02-02 Allied Tube & Conduit Corp Method and apparatus for the continuous forming, galvanizing and coloring of tubing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10253418B2 (en) 2012-04-17 2019-04-09 Arcelormittal Investigacion Y Desarrollo, S.L. Steel sheet provided with a coating offering sacrificial cathodic protection, method for the production of a part using such a sheet, and resulting part

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JP2007070725A (ja) 2007-03-22
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EP1760166B1 (de) 2016-09-14
CN1924075A (zh) 2007-03-07
KR100667174B1 (ko) 2007-01-12
CN1924075B (zh) 2010-06-02

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