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WO2011145782A1 - Procédé de fabrication d'une plaque d'acier galvanisée à chaud sur un côté - Google Patents

Procédé de fabrication d'une plaque d'acier galvanisée à chaud sur un côté Download PDF

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Publication number
WO2011145782A1
WO2011145782A1 PCT/KR2010/006774 KR2010006774W WO2011145782A1 WO 2011145782 A1 WO2011145782 A1 WO 2011145782A1 KR 2010006774 W KR2010006774 W KR 2010006774W WO 2011145782 A1 WO2011145782 A1 WO 2011145782A1
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WO
WIPO (PCT)
Prior art keywords
plating
weight
parts
steel sheet
hot
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.)
Ceased
Application number
PCT/KR2010/006774
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English (en)
Korean (ko)
Inventor
김현중
주재현
장삼규
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.)
DONGBU STEEL Co Ltd
Original Assignee
DONGBU 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 DONGBU STEEL Co Ltd filed Critical DONGBU STEEL Co Ltd
Priority to CN2010800668018A priority Critical patent/CN102939401A/zh
Publication of WO2011145782A1 publication Critical patent/WO2011145782A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C23C2/02—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
    • 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
    • C23C2/30—Fluxes or coverings on molten baths
    • 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
    • C23C2/40—Plates; Strips

Definitions

  • the present invention relates to a method for manufacturing a single-side hot dip galvanized steel sheet, and more particularly, to a method for manufacturing a single-side hot dip galvanized steel sheet having a plated layer formed on one side and an iron surface which is not plated on the other side.
  • An example of the electroplating method is the Carosel process.
  • the plating is performed only on the surface in contact with the plating solution as the plating is performed in the process of rotating the conductor roll while the steel sheet is in close contact with the cylindrical roll.
  • the electroplating method is limited to zinc plating only, there is a problem that chlorine ions, which are members of the plating solution on the non-plated surface is adsorbed, so that there is a high risk of rust generation by hydrochloric acid ions during long-term storage.
  • Hot-dip plating method is to remove one side by mechanical grinding after plating both sides, secondly to contact only one side of the steel plate with hot dip bath, and thirdly apply the molten plating solution to only one side of steel plate by roll coating method. And the fourth method of oxidizing only one side in a reduction furnace before the steel sheet is deposited in the plating solution.
  • the hot-dip plating method is very cumbersome to remove the plating layer on one side after plating in the first case, requires great effort, and involves cost increase.
  • an object of the present invention is to solve the above-described problems, and to provide a method for manufacturing a single-side hot-dip galvanized steel sheet using a plating retardant which is excellent in preventing adhesion of a molten plating solution and easy to remove.
  • the present invention comprises a coating step of coating a plating retardant, the main component of the silicone polyester epoxy resin on one surface of the steel sheet; And a plating step of performing the plating process by depositing the steel plate in a hot dip plating bath after the coating step.
  • the plating step further comprising the step of removing the plating inhibitor by polishing the surface coated with the plating inhibitor.
  • the steel plate is deposited in a hot dip bath after heat treatment.
  • the plating inhibitor is 30 to 55 parts by weight of the silicone polyester epoxy resin relative to the total weight of the plating inhibitor; 5-15 weight part of butyrate melamine resin; 10 to 30 parts by weight of iron oxide black pigment; 5-15 parts by weight of mica; 1 to 5 parts by weight of silica; 0.3 to 2 parts by weight of polyacrylate resin; And a residual amount of solvent such that the total weight of the plating inhibitor is 100 parts by weight.
  • the present invention is a plating stopper containing a silicone polyester epoxy resin as a main component is coated to a dry coating thickness of 2 ⁇ 10 ⁇ m on one surface of the steel sheet and performs hot-dip plating.
  • the plating retardant has a small adhesion amount, has an excellent adhesion retardation effect of the molten plating solution, and is easily removed to facilitate the manufacture of a single-side hot-dip galvanized steel sheet. Therefore, it is possible to manufacture a single-side hot-dip steel sheet more easily.
  • the present invention enables the production of one-side hot-dip galvanized steel sheet in a general hot-dip plating line for producing a double-sided hot-dip galvanized steel sheet, thereby reducing manufacturing costs and simplifying work management.
  • FIG. 1 is a photograph which shows the plating inhibitor coating film of the comparative example 1
  • (b) is a photograph which shows the plating inhibitor coating film of Example 1.
  • FIG. 1 is a photograph which shows the plating inhibitor coating film of the comparative example 1
  • FIG. 2 is a SEM photograph (a) and an EPMA analysis result (b) from which a plating inhibitor coating film of Comparative Example 1 was removed.
  • Example 3 is a SEM photograph (a) and an EPMA analysis result (b) from which the plating inhibitor coating film of Example 1 was removed.
  • the present invention includes a coating step of coating a plating inhibitor on one surface of a steel sheet to form a plating inhibitor coating film, and a plating step of depositing the steel sheet in a molten plating bath after the coating step to perform a plating process.
  • the method may further include a removing step of removing the plating inhibitor coating by polishing the plating inhibitor coating after the plating step.
  • the plating inhibitor coating film (hereinafter referred to as "coating film”) has a strong feature of preventing the molten plating solution from being buried, has heat resistance to withstand high temperature heat, and is excellent in peelability.
  • Plating inhibitors include silicone polyester epoxy resins, melamine resins, inorganic pigments.
  • Melamine resin is a curable resin, but a butylate melamine resin is used.
  • Inorganic pigments include iron oxide black pigment, mica and silica.
  • the Si component of the silicone polyester epoxy resin among the plating blocking agents lowers the surface tension of the coating film so that the molten plating solution (materials to be plated) cannot stick to the coating film.
  • the plating blocking agent of the present invention with respect to the total weight of the plating blocking agent,
  • Polyacrylate resins are included for pigment dispersion.
  • the poly acrylate resin is included in the range of 0.3 to 2 parts by weight based on the total weight of the plating inhibitor.
  • the plating retardant is a silicone polyester epoxy resin excellent in blocking the molten plating liquid and a melamine resin for curing and an inorganic pigment imparting heat resistance.
  • the plating retardant is excellent in preventing the adhesion of the molten plating liquid and is easily removed. .
  • Silicone polyester epoxy resins are the main component of the plating retardant. Silicone polyester epoxy resins are excellent in heat resistance, excellent in slip properties, and excellent in stopping the molten plating solution.
  • the silicone polyester epoxy resin has an epoxy functional group, a polyester reactor and a silicon reactor. It is excellent in solvent resistance and adhesiveness by an epoxy functional group, excellent in bendability by a polyester reactor, and excellent in slip property and heat resistance by a silicon reactor.
  • the silicone polyester is composed of aminosilane [NH 2 (CH) 2 NH-R-SI (OCH 3 ) 3 ], glycidyl alkyl silane [() in a resin produced by the condensation reaction of bisphenol A and epichlorohydrin. CH 2 —CH—O) CH 2 OR—Si (CH 3 ) 3 ], an amine and one or more selected from organosilanes capable of ring-opening reaction with a basic acid are reacted to synthesize a prepolymer, which is an intermediate of polyepoxy.
  • the polyepoxypolyol (including -OH group) is ring-opened and reacted with monomers such as high in the preformylmer.
  • DEG DEG
  • a basic acid sebacic acid
  • HHPA TPA
  • PhAn PhAn
  • silicone polyester epoxy resin is less than 30 parts by weight, the heat resistance is lowered. If the silicone polyester epoxy resin is more than 55 parts by weight, the dispersion of the pigment is worsened and curing hardening occurs.
  • Butyl melamine resin is a cured resin.
  • the coating film is hardly cured. If the butylate melamine resin is more than 15 parts by weight, the coating film becomes excessively hard due to excessive curing, resulting in poor paintability and workability.
  • Inorganic pigments are included to impart the color of the coating, to improve the heat resistance and hardness of the coating and to control the gloss.
  • Inorganic pigments include black pigment, mica and silica.
  • the black pigment uses iron oxide black pigment.
  • the iron oxide black pigment is intended to give the color of the paint and to improve heat resistance.
  • Iron oxide is a black pigment mainly composed of iron oxide. If the iron oxide black pigment is less than 10 parts by weight, the heat resistance is lowered, and if it exceeds 30 parts by weight, the workability and workability are deteriorated.
  • Mica is contained as a extender pigment that enhances heat resistance and solids of paint. Mica uses micro mica. If the mica is less than 5 parts by weight, the heat resistance is lowered, and if it exceeds 15 parts by weight, the paintability is poor.
  • Silica is contained as a quencher for reducing the glossiness of a coating film.
  • Silica acts as a matting agent because of its large surface area per unit weight and its relatively high oil absorption. Glossiness of a coating film is adjusted according to content of silica, and when a silica is less than 1 weight part, glossiness is high, workability
  • Polyacrylate resin is used as a dispersant to disperse the pigments of the plating inhibitor. If the polyacrylate resin is less than 0.3 part by weight, the pigment is not dispersed well and sedimentation of the paint occurs, and if it is 2 parts by weight or more, the compatibility with the silicone polyester epoxy resin becomes worse, resulting in appearance defects such as craters. .
  • a solvent is for melt
  • the method for manufacturing a single-sided hot dip galvanized steel sheet using a plating inhibitor includes a coating step of coating the plating blocking agent on one surface of a steel plate, and a plating step of depositing the steel plate in a molten plating bath after the coating step to perform a plating process. .
  • the plating inhibitor is applied to the steel sheet so that the dry film thickness is 2 to 10 ⁇ m. If the dry coating thickness is less than 2 ⁇ m, the effect of preventing the plating is not sufficient, and thus it is difficult to achieve a desired object. If the thickness of the dry coating film exceeds 10 ⁇ m, the adhesion of the plating inhibitor is poor, and peeling occurs when the roll passes through the plating process.
  • Coating of the plating inhibitor is performed before the heat treatment step of the plating step. This is to allow the plating blocker to harden during the heat treatment process. In addition, since the main bond of the resin is broken during the heat treatment step, the plating retardant coating film is easily removed.
  • Plating inhibitor is applicable to various plated steel sheets such as hot dip galvanized steel sheet, alloyed hot dip galvanized steel sheet, zinc-aluminum alloy coated steel sheet, aluminum plated steel sheet.
  • the method of removing the plating retardant may be performed by chemically using chemicals or mechanically by polishing.
  • chemical methods are not only difficult to apply selectively to plating inhibitors, but also are dangerous. Therefore, it is reasonable to polish mechanically.
  • Mechanical polishing uses brush or belt abrasive to continuously remove the plating inhibitor of the steel sheet.
  • the plating retardant coating film is not only thin in thickness of 2 to 10 ⁇ m, but also easy to be removed because the main bonds of the resins are destroyed by heat treatment before being immersed in the hot dip bath.
  • One surface of the steel sheet was coated with a plating inhibitor component and a coating film thickness (or coating amount) as shown in Table 1, and then immersed in a hot dip bath to prepare a single-side coated steel sheet. Thereafter, physical property evaluation results such as plating retardation and peeling property of the plating retardant are shown in Table 1 below.
  • the adhesion of the molten plating solution to the plating inhibitor coating surface is on the front side.
  • Plating Retardant Ingredients Plating resistant coating film thickness or coating amount Plating low resistance Plating inhibitor release property Remarks MgO 10g, Waterglass 10g, NaOH 4gH 3 BO 3 6g, TiO 2 3g 50g / m2 ⁇ X Comparative Example 1 Mg (OH) 2 14g, K 2 SiO 2 6g, KOH 6gH 3 BO 3 5g, TiO 2 4g 50g / m2 ⁇ X Comparative Example 2 MgO 2.5g, Mg (OH) 2 10.5g, Na 2 OSiO 2 4g NaOH 5g, H 3 BO 3 7g, Ti (OH) 4 6g 50g / m2 ⁇ X Comparative Example 3 Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 1 ⁇ m ⁇ ⁇ Comparative Example 4 Silicone polyester epoxy
  • Comparative Example 6 the content of the silicone polyester epoxy resin was low, and there was partial adhesion of the molten plating solution to the coated surface of the plating retardant.
  • Comparative Example 7 had a high content of butylate melamine resin, resulting in poor peelability of the plating retardant. This is because the curing is excessive and the coating film becomes hard.
  • Comparative Example 8 the content of the silicone polyester epoxy resin was high, and there was partial adhesion of the molten plating solution to the coated surface of the plating inhibitor. This is because of the phenomenon that the dispersion of the plating inhibitor is poor and the curing is insufficient.
  • the polyacrylate resin dispersant of Table 1 means a polyacrylate resin.
  • FIG. 1 is a photograph which shows the plating inhibitor film of the comparative example 1
  • (b) is a photograph which shows the plating inhibitor film of Example 1
  • FIG. 2 removes the plating inhibitor film of the comparative example 1
  • It is a SEM photograph (a) and the result of EPMA analysis (b)
  • FIG. 3 is a SEM photograph (a) and the result of EPMA analysis which removed the plating inhibitor coating film of Example 1.
  • a of FIG. 2 is a part in which a plating inhibitor coating film was not peeled off
  • B is a part in which a plating inhibitor coating film was peeled off.
  • a plating inhibitor is excellent in plating blocking property and also excellent in peelability.
  • a plating retardant mainly composed of a silicone polyester epoxy resin.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une plaque d'acier galvanisée à chaud sur un côté qui utilise un inhibiteur de galvanisation comprenant une résine époxyde de polyester de silicium, une résine de mélamine butylée, un pigment d'oxyde de fer noir, du mica et de la silice. Ledit procédé consiste à déposer l'inhibiteur de galvanisation sur un côté d'une plaque d'acier et plonger celle-ci dans un bain fondu pour effectuer une galvanisation. Comme l'adhérence de l'inhibiteur de galvanisation utilisé peut être totalement inhibée et celui-ci facilement retiré, la fabrication d'une plaque d'acier galvanisée à chaud sur un côté est facilitée. Ainsi, la présente invention est avantageuse en ce que les coûts de fabrication sont réduits et une plaque d'acier galvanisée à chaud sur un côté peut être facilement produite.
PCT/KR2010/006774 2010-05-17 2010-10-05 Procédé de fabrication d'une plaque d'acier galvanisée à chaud sur un côté Ceased WO2011145782A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010800668018A CN102939401A (zh) 2010-05-17 2010-10-05 制造单面热浸镀锌钢板的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100046141A KR101182051B1 (ko) 2010-05-17 2010-05-17 편면 용융도금강판의 제조방법
KR10-2010-0046141 2010-05-17

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WO2011145782A1 true WO2011145782A1 (fr) 2011-11-24

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CN (1) CN102939401A (fr)
WO (1) WO2011145782A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103160764A (zh) * 2013-03-25 2013-06-19 冷水江钢铁有限责任公司 一种复合带钢的单面连续热镀锌方法
CN109680231A (zh) * 2019-01-25 2019-04-26 中海油能源发展股份有限公司 一种管线热镀锌法兰密封面隔离方法
KR102082963B1 (ko) * 2019-03-13 2020-02-28 (주)선영에스티 폴레에스테르를 주성분으로 하는 용융아연도금 부분방지제 및 이를 이용한 용융아연도금 방법
KR102388789B1 (ko) * 2020-06-24 2022-04-19 전북대학교산학협력단 도금 방지제 및 이를 이용한 선택적 용융 도금 방법
CN116162880A (zh) * 2022-12-20 2023-05-26 中国船舶重工集团应急预警与救援装备股份有限公司 一种热镀锌桥梁器材摩擦面处理方法

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS54100938A (en) * 1978-01-26 1979-08-09 Nippon Steel Corp Production of one-side terne alloy plated steel plate
JPS5763672A (en) * 1980-09-30 1982-04-17 Yoshiro Hirao Partially undipping method in hot dipping
KR840001260B1 (ko) * 1979-04-17 1984-09-01 요시야마히로기찌 용융 금속 도금방법
JPH06248412A (ja) * 1993-02-22 1994-09-06 Furubayashi Kogyo Kk 管継方法

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JPS5538937A (en) * 1978-09-08 1980-03-18 Nippon Steel Corp Manufacture of single side hot zinc dipped steel sheet
JPS55154552A (en) * 1979-05-18 1980-12-02 Hitachi Ltd Method and apparatus for plating single side of steel sheet
JPS55154553A (en) * 1979-05-18 1980-12-02 Hitachi Ltd Manufacturing apparatus for single side plated steel sheet
US4610389A (en) * 1985-02-25 1986-09-09 Comet Research, Inc. Method for treating a single side of a metallic sheet
CN101476100A (zh) * 2008-12-31 2009-07-08 哈尔滨工业大学 一种单面镀铝钢板的制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54100938A (en) * 1978-01-26 1979-08-09 Nippon Steel Corp Production of one-side terne alloy plated steel plate
KR840001260B1 (ko) * 1979-04-17 1984-09-01 요시야마히로기찌 용융 금속 도금방법
JPS5763672A (en) * 1980-09-30 1982-04-17 Yoshiro Hirao Partially undipping method in hot dipping
JPH06248412A (ja) * 1993-02-22 1994-09-06 Furubayashi Kogyo Kk 管継方法

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CN102939401A (zh) 2013-02-20
KR20110126459A (ko) 2011-11-23
KR101182051B1 (ko) 2012-09-11

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