WO2019167149A1 - Élément pour équipement dans des bains, équipement dans un bain de métal fondu, et dispositif de production de matériau de placage de métal fondu - Google Patents

Élément pour équipement dans des bains, équipement dans un bain de métal fondu, et dispositif de production de matériau de placage de métal fondu Download PDF

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Publication number
WO2019167149A1
WO2019167149A1 PCT/JP2018/007379 JP2018007379W WO2019167149A1 WO 2019167149 A1 WO2019167149 A1 WO 2019167149A1 JP 2018007379 W JP2018007379 W JP 2018007379W WO 2019167149 A1 WO2019167149 A1 WO 2019167149A1
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WIPO (PCT)
Prior art keywords
bath
coating layer
carbide
less
molten metal
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PCT/JP2018/007379
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English (en)
Japanese (ja)
Inventor
顕 水野
栗栖　泰
辰巳　佳宏
祥司 松井
Original Assignee
日本製鉄株式会社
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.)
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Application filed by 日本製鉄株式会社 filed Critical 日本製鉄株式会社
Priority to CN201880071929.XA priority Critical patent/CN111315919B/zh
Priority to PCT/JP2018/007379 priority patent/WO2019167149A1/fr
Publication of WO2019167149A1 publication Critical patent/WO2019167149A1/fr

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    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/16—Sliding surface consisting mainly of graphite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials

Definitions

  • the present invention relates to a device for bath equipment, a device for molten metal bath, and a molten metal plating material manufacturing apparatus.
  • a manufacturing method is used in which the metal material is continuously transferred in a tensioned state in a bath in which the metal used for plating is melted.
  • a process is often employed in which a metal material is put into the molten metal bathtub from the snout and is pulled up from the bathtub by the support roll while being transported around the sink roll in the bath.
  • Patent Document 1 a hydrostatic pressure treatment is performed on a coating layer containing a cobalt (Co) -based alloy and at least one of tungsten carbide, chromium carbide, titanium carbide, and niobium carbide on the surface of a metal material.
  • Co cobalt
  • tungsten carbide composite lining for centrifugal casting which uses spherical tungsten carbide hard particles having a specific particle size and reduces the opponent attack by adopting a lining method by centrifugal casting. A material is disclosed.
  • Patent Document 3 a corrosion-resistant wear-resistant sliding member that uses a Ni-based self-fluxing alloy as a tungsten carbide matrix and has improved corrosion resistance and wear resistance by covering the member with hot isostatic pressure treatment is disclosed. It is disclosed.
  • JP-A-7-268648 Japanese Patent Laid-Open No. 7-290186 JP 2000-266055 A
  • the hot isostatic processing material used by the said patent document 1 and the patent document 3 has a dense and homogeneous structure, it was excellent in abrasion resistance with respect to the member obtained by the thermal spraying method or the overlay welding method.
  • there is a limit to the amount of hard particles added such as various carbides because it leads to the generation of voids. For this reason, as the continuous use period for the purpose of improving productivity is prolonged, the problem that the wear amount and the frictional force rapidly increase due to the dropping of the hard particles and the protrusion due to the matrix erosion occurred.
  • the place made into the objective of this invention is the member for apparatus in bath which can further improve corrosion resistance, and the member for apparatus in bath
  • An object of the present invention is to provide an apparatus in a molten metal bath and an apparatus for producing a molten metal plating material.
  • the gist of the present invention is as follows.
  • a member for an in-bath apparatus used for an apparatus in a molten metal bath in a molten metal plating material manufacturing apparatus The in-bath apparatus member has a coating layer provided on at least a part of the surface of the in-bath apparatus member,
  • the coating layer includes hard particles and a matrix that holds the hard particles,
  • the matrix is, by mass%, C: 0.5% to 3%, Cr: 15% to 30%, W: 7% to 21%, Si: 0% to 4%, B: 0% or more 4% or less and Ni: 0% or more and 30% or less, the balance being a cobalt-based alloy containing Co and impurities, including a metal part and granular carbide containing at least one precipitated W or Cr
  • the hard particles are at least one simple substance selected from the group consisting of tungsten carbide, ditungsten carbide, chromium carbide, titanium carbide and niobium carbide, and one of granulated
  • the said matrix is a member for apparatus in a bath as described in (1) containing the C: 1% or more and 2% or less by the mass%.
  • the matrix is% by mass, Si: 0.5% or more and 4% or less B: 0.5% or more and 4% or less, and Ni: containing at least one selected from the group consisting of 5% or more and 30% or less, (1) or ( The member for apparatus in bath as described in 2).
  • the content of W in the matrix is 21% or less in terms of mass%, and the content of Ni is 5% or more, and any one of (1) to (3) For bath equipment.
  • the carbide precipitated in the matrix is selected from the group consisting of Co 3 W 3 C, Co 6 W 6 C, WC, W 2 C, Cr 23 C 6, Cr 7 C 3 and Cr 3 C 2.
  • the content of the carbide precipitated in the matrix is 5 vol% or more and 80 vol% or less with respect to the total volume of the coating layer, according to any one of (1) to (5)
  • the member for apparatus in bath of description The member for an in-bath apparatus according to any one of (1) to (6), wherein the hard particles have a particle size of 0.001 mm to 1 mm.
  • the content of the hard particles is 15% by volume or more and 70% by volume or less with respect to the total volume of the coating layer, and for a device in a bath according to any one of (1) to (8) Element.
  • a device in a molten metal bath comprising the member for a device in bath according to any one of (1) to (13).
  • An apparatus for producing a molten metal plating material comprising the in-bath apparatus member according to any one of (1) to (13).
  • the amount of carbon contained in the cobalt-based alloy is set within a predetermined range, and granular carbides of W or Cr are precipitated on the cobalt-based alloy, whereby the corrosion resistance of the member for equipment in a bath is obtained. Can be further improved.
  • the in-bath apparatus member the molten metal bath apparatus, and the molten metal plating material manufacturing apparatus according to an embodiment of the present invention will be described in detail.
  • the member for apparatus in bath which concerns on this embodiment is used for the apparatus in molten metal bath in a molten metal plating material manufacturing apparatus.
  • the in-bath equipment member of the present invention is not limited to the in-bath equipment member disposed in the molten zinc bath. That is, the in-bath apparatus member according to the present invention can be used for an apparatus in a molten metal bath disposed in any molten metal bath.
  • the member for an in-bath apparatus according to the present invention according to the present invention is naturally applicable not only to a continuous molten metal plating material manufacturing apparatus but also to a molten metal bath apparatus of a batch type molten metal plating material manufacturing apparatus. .
  • FIG. 1 is an explanatory view schematically showing a configuration of a molten metal plating material manufacturing apparatus according to an embodiment of the present invention.
  • the continuous hot-dip galvanized steel sheet manufacturing apparatus mainly includes a hot-dip zinc bath 1, a snout 2, a sink roll 3, and a pair of support rolls 4.
  • the snout 2 is a facility for continuously feeding the steel sheet S to the molten zinc bath 1 and is filled with an inert gas such as nitrogen.
  • the sink roll 3 and the support roll 4 have support shafts 5 and 6, respectively.
  • the support shaft 6 is connected to a drive source (not shown) such as a motor, and has a constant speed in the direction of the arrow in the figure. Is driven to rotate.
  • the continuous hot-dip galvanized steel sheet manufacturing apparatus as shown in FIG. 1 is provided with various facilities (not shown) such as an ingot charging device, a dross recovery device, and a roll mount as necessary. .
  • the in-bath equipment member according to the present embodiment is, for example, a bath disposed inside the molten zinc bath 1 such as the support shafts 5 and 6 and bearings (not shown) of the sink roll 3 and the support roll 4. Used as a member of medium equipment.
  • FIG. 2 is a partial cross-sectional view schematically showing the configuration of the in-bath apparatus member according to the present embodiment.
  • FIG. 3 is an explanatory diagram showing an example of a cross-sectional captured image of the coating layer included in the in-bath apparatus member shown in FIG.
  • the member 10 for in-bath apparatus which concerns on this embodiment is provided with the base material 11 and the coating layer 13 formed in at least one part of the surface of the base material 11, as typically shown in FIG.
  • the base material 11 is not particularly limited, and is appropriately selected from known steel materials according to characteristics such as strength required for the sink roll 3 and the support roll 4. Examples of the base material 11 include various stainless steel plates such as SUS316L.
  • the covering layer 13 is formed in at least a portion of the base material 11 that requires corrosion resistance and wear resistance as the in-bath apparatus member 10 such as a sliding portion of a shaft or a bearing.
  • the covering layer 13 may be formed on the entire surface of the base material 11.
  • the covering layer 13 is formed on a desired portion of the base material 11 by a known method such as hot isostatic pressing (HIP processing).
  • the coating layer 13 includes (a) a cobalt-based alloy 15 containing cobalt (Co) as a main component, and (b) hard particles 17 contained in the cobalt-based alloy 15.
  • the cobalt-based alloy 15 functions as a matrix for holding the hard particles 17.
  • carbides described later are precipitated and dispersed in the cobalt-based alloy 15 that is a matrix.
  • the coating layer 13 as described in detail below is formed on the surface of the base material 11 by HIP treatment with a thickness of preferably 1 mm or more (thickness dimension of the member for equipment in a bath) ⁇ 7 mm or less.
  • a thickness of the covering layer 13 preferably 1 mm or more (thickness dimension of the member for equipment in a bath) ⁇ 7 mm or less.
  • the thickness of the covering layer 13 is less than 1 mm, depending on other configurations of the covering layer 13, the durability of the covering layer 13 is insufficient and sufficient reliability is obtained. It may not be possible.
  • the thickness of the coating layer 13 is more than ⁇ 7 mm, depending on other configurations of the coating layer 13, the base material 11 may be caused by internal stress generated during the HIP process. May deform or break.
  • the thickness of the coating layer 13 is preferably 1.2 mm or more and 7 mm or less, more preferably 1.4 mm or more and 5 mm or less.
  • the cobalt-based alloy 15 containing Co as a main component functions as a matrix of the hard particles 17.
  • This matrix that is, the cobalt-based alloy 15 includes the following components.
  • % means the metal conversion amount represented by the mass%.
  • the component shown below is the value containing the deposit mentioned later.
  • the balance of the above components contains Co and impurities.
  • Carbon (C) is an element used for improving the melt resistance of the coating layer 13.
  • C Carbon
  • the C amount By setting the C amount to 0.5% or more and 3% or less, it becomes possible to precipitate the carbide 19 around the vicinity of the hard particles 17, improve the corrosion resistance of the coating layer 13, and improve the corrosion resistance. Can be planned.
  • the amount of C is less than 0.5%, the amount of carbide precipitated on the cobalt-based alloy 15 is insufficient, and it is difficult to improve the resistance to melting, which is not preferable.
  • the amount of C is more than 3%, the toughness of the coating layer 13 is lowered, and cracking may occur during the HIP treatment, which is not preferable.
  • the C content is preferably 0.6% or more, more preferably 0.7% or more. Furthermore, from the viewpoint of suppressing toughness reduction and more reliably suppressing embrittlement of the coating layer 13, the C content is preferably 2.2% or less, more preferably 1.9% or less.
  • the amount of C contained in the cobalt-based alloy 15 is preferably 1% or more.
  • the amount of C is 1% or more, as shown in FIG. 3, it is possible to precipitate the carbide 19 so that it is uniformly dispersed not only in the vicinity of the hard particles 17 but also over the entire cobalt base alloy 15.
  • the upper limit value of the C content is preferably 2%.
  • Chromium (Cr) is an element used for improving the corrosion resistance of the coating layer 13.
  • Cr amount Cr equivalent amount
  • the corrosion resistance of the coating layer 13 is improved and the carbide 19 mainly composed of Cr 23 C 6, Cr 7 C 3 and Cr 3 C 2 is precipitated. Is possible.
  • the amount of Cr exceeds 30%, the toughness of the coating layer 13 is lowered, and cracking may occur during the HIP treatment, which is not preferable.
  • the amount of Cr is preferably 15% or more, more preferably 18% or more. Further, the Cr content is preferably 30% or less, more preferably 28% or less.
  • W 7% to 21%
  • Tungsten (W) is an element used for improving the strength of the coating layer 13.
  • W is an element used for improving the strength of the coating layer 13.
  • the carbide 19 mainly composed of Co 3 W 3 C, Co 6 W 6 C, WC, and W 2 C is effectively precipitated on the cobalt base alloy 15.
  • the wear resistance of the coating layer 13 can be improved.
  • the amount of W is less than 7%, the effect of improving the wear resistance as described above cannot be sufficiently obtained, which is not preferable.
  • the amount of W exceeds 21%, the toughness of the coating layer 13 decreases, and cracking may occur during the HIP treatment, which is not preferable.
  • the amount of W is preferably 9% or more, more preferably 11% or more.
  • W amount becomes like this. Preferably it is 19% or less, More preferably, it is 18% or less.
  • the matrix further includes at least one of Si: 0.5% to 4%, B: 0.5% to 4%, Ni: 5% to 30%. May be included. Since these elements are optional components, the content may naturally be contained below the lower limit value, or the content may be 0%.
  • Nickel (Ni) is an element used to improve the toughness of the coating layer 13.
  • Ni is an element used to improve the toughness of the coating layer 13.
  • the amount of Ni is preferably 5% or more, more preferably 10% or more. Further, the amount of Ni is preferably 25% or less, more preferably 22% or less.
  • the coating layer 13 according to the embodiment may have reduced toughness while improving corrosion resistance due to granular carbide described later. When the content of Ni and W is in the above range, the coating layer 13 can be more reliably prevented from cracking.
  • Si 0.5% or more and 4% or less
  • Silicon (Si) is an element that can lower the melting point of the cobalt-based alloy 15 to, for example, 1100 ° C. or less by adding it.
  • Si amount By setting the Si amount to 0.5% or more, such a melting point lowering effect can be obtained, and the denseness of the coating layer 13 can be further improved during the HIP process.
  • the amount of Si is preferably 1% or more, more preferably 1.5% or more, in order to obtain the melting point lowering effect more reliably.
  • the amount of Si is preferably 3.3% or less, more preferably 3% or less, in order to sufficiently secure the toughness of the coating layer 13.
  • B 0.5% or more and 4% or less Boron (B) effectively precipitates boride in the cobalt-based alloy 15 while adding the boron-based alloy 15 to lower the melting point of the cobalt-based alloy 15 to, for example, 1100 ° C. or less. It is an element that can improve the wear resistance of the coating layer 13. By making the amount of B 0.5% or more, it is possible to obtain such an effect, and to improve the wear resistance while further improving the denseness of the coating layer 13 during the HIP process. Is possible. On the other hand, when the amount of B exceeds 4%, the toughness of the coating layer 13 decreases, and cracking may occur during the HIP treatment, which is not preferable.
  • the amount of B is preferably 1% or more, more preferably 1.5% or more in order to obtain the melting point lowering effect more reliably.
  • the amount of B is preferably 3.3% or less, more preferably 3% or less in order to sufficiently secure the toughness of the coating layer 13.
  • Cobalt (Co) is a main component of the cobalt-based alloy 15 and is the component having the largest content in the cobalt-based alloy 15. Cobalt is relatively excellent in corrosion resistance in molten metal.
  • the cobalt content in the cobalt-based alloy 15 is not particularly limited as long as it is larger than the other components in the cobalt-based alloy 15 as described above, but for example, 20% to 85%, preferably 30% to 75%. It is. When the cobalt content in the cobalt-based alloy 15 is 30% or more, the corrosion resistance and toughness of the coating layer 13 can be sufficiently ensured. In addition, when the cobalt content in the cobalt-based alloy 15 is 75% or less, the corrosion resistance and wear resistance of the other additive elements can be sufficiently improved.
  • Impurity is a component that can be mixed due to raw materials and other factors when the coating layer 13 is industrially produced, regardless of whether or not it is intended to be added. Such impurities can be contained in the cobalt-based alloy 15 as long as the coating layer 13 is not adversely affected.
  • the cobalt base alloy 15 has been described in detail above.
  • granular carbides containing at least W or Cr are precipitated and dispersed in the cobalt-based alloy 15 (matrix), and according to the present embodiment.
  • the matrix includes a metal part and a granular carbide 19 including at least one precipitated W or Cr. More specifically, the carbides precipitated in the matrix are, for example, from Co 3 W 3 C, Co 6 W 6 C, WC, W 2 C, Cr 23 C 6, Cr 7 C 3 and Cr 3 C 2.
  • the carbide content precipitated in the matrix is preferably 5% by volume or more and 80% by volume or less with respect to the total volume of the coating layer 13.
  • carbide content is not less than 5% by volume and not more than 80% by volume, it is possible to further suppress the melting damage of the coating layer 13 and to further effectively suppress the increase in wear amount and frictional force. It becomes.
  • carbonized_material in these matrices has a chemical composition different from the hard particle 17 mentioned later, it can discriminate
  • EPMA Electro Probe Micro Analyzer
  • the granular carbide 19 as described above can be formed by making the amounts of W, Cr, and C in the cobalt-based alloy 15 within the above-described ranges and performing the HIP treatment described later.
  • Hard particles 17 are added to the cobalt-based alloy 15 as a matrix.
  • the hard particles 17 include at least one simple substance selected from the group consisting of tungsten carbide, ditungsten carbide, chromium carbide, titanium carbide, and niobium carbide, and one or both of a plurality of the above-mentioned granulated substances.
  • the granulated product is obtained, for example, by granulating the above simple substance using a binder such as Ni or Co.
  • tungsten carbide (WC), ditungsten carbide (W 2 C), and titanium carbide (TiC) are hard particles that improve the wear resistance of the coating layer 13
  • chromium carbide (Cr 23 C 6, Cr 7 C 3, and Cr 3 C 2 ) are hard particles that relieve internal stress of the coating layer 13.
  • niobium carbide (NbC) is a hard particle that improves the lubricity of the coating layer 13.
  • the hard particles 17 having such characteristics can be used alone, but when used in combination, these characteristics are superimposed on each other.
  • the average particle size of the hard particles 17 is preferably 0.001 mm or more and 1 mm or less. When the average particle size is less than 0.001 mm, depending on the composition of the cobalt-based alloy 15, the hard particles 17 may be aggregated and may not be uniformly mixed with the matrix-based cobalt-based alloy 15. When the average particle size is more than 1 mm, pores may remain inside the coating layer 13 depending on the composition of the cobalt-based alloy 15.
  • the average particle diameter of the hard particles 17 is more preferably 0.02 mm or more and 0.5 mm or less. By making the average particle size 0.02 mm or more and 0.5 mm or less, while maintaining good dispersibility of the hard particles 17 in the matrix, the corrosion resistance and wear resistance of the coating layer 13 can be exhibited well. Is possible.
  • the average particle diameter of the hard particles 17 can be, for example, a volume-based median diameter (D50) measured by a laser diffraction particle size distribution measurement method after classification at the raw material stage.
  • D50 volume-based median diameter
  • the obtained hard particles may be classified as appropriate, and only hard particles having a particle diameter in a predetermined range may be used as the hard particles 17 added to the coating layer 13.
  • minute particles are present in the coating layer 13
  • these particles fall off the coating layer 13 relatively easily.
  • the toughness of the coating layer 13 tends to decrease.
  • the classification method is not particularly limited, and examples thereof include sieving and classification using an air classifier.
  • the content of such hard particles 17 is not particularly limited, but is preferably 15% by volume or more and 70% by volume or less with respect to the total volume of the coating layer 13.
  • the content of the hard particles 17 is less than 15% by volume, the area ratio of the cobalt-based alloy 15 that is a matrix is increased, the corrosion resistance is lowered, and the wear resistance of the coating layer 13 is insufficient. There is a case.
  • grains 17 exceeds 70 volume%, a crack may generate
  • the content of the hard particles 17 is more preferably 25% by volume or more and 55% by volume or less with respect to the entire volume of the coating layer 13.
  • the crack resistance and the wear resistance are in a trade-off relationship such that the smaller the content, the better the crack resistance, and the higher the content, the better the wear resistance.
  • the hard particles 17 according to this embodiment have been described in detail above.
  • the member for equipment in bath according to the present embodiment described above improves the corrosion resistance by setting the amount of carbon contained in the cobalt-based alloy within a predetermined range and precipitating W or Cr granular carbides 19 on the cobalt-based alloy. doing. As a result, it is possible to suppress the melting loss of the coating layer 13, and the increase in wear amount and frictional force is effectively suppressed. Therefore, the in-bath apparatus member according to the present embodiment is preferably disposed at a site where the wear and friction of the apparatus in the molten metal bath are likely to occur.
  • the in-bath apparatus member according to the present embodiment can be a roll member of an apparatus in a molten metal bath, preferably a roll spindle or a roll bearing.
  • the apparatus for bath equipment according to the present embodiment suppresses an increase in the amount of wear and frictional force due to changes over time, so that a molten metal plating material manufacturing apparatus that is operated for a long time, for example, is continuously used. Suitable for molten metal plating material manufacturing equipment.
  • the in-bath apparatus member can be obtained by forming the coating layer 13 on the base material 11 by hot isostatic pressing (HIP process).
  • HIP process hot isostatic pressing
  • the cylindrical metal capsule 200 shown in FIG. 4 is filled with the raw material of the base material 11 and the coating layer 13, and then the metal capsule 200 is arranged in the HIP apparatus 100 shown in FIG. Is done.
  • a metal capsule 200 is prepared. As shown in FIG. 4, a cobalt-based alloy that is a matrix with respect to a space formed between the base material 11 used as a base material and the metal capsule 200. A material powder 20 containing 15 and hard particles 17 is enclosed.
  • the HIP device 100 includes a high pressure cylinder 101, a pedestal 103, a shelf 105, a Mo heater 107, a supply pipe 109, a discharge pipe 111, and a vacuum pump (not shown). I have.
  • the high-pressure cylinder 101 forms a space 113 in which a plurality of metal capsules 200 can be stored in series, and the inside thereof can be set to a predetermined pressure condition.
  • the pedestal 103 is housed in a space 113, and a shelf 105 to which a Mo heater 107 is attached is disposed on the pedestal 103.
  • the shelf 105 has a plurality of shelf plates, and the metal capsules 200 can be arranged on each of the shelf plates.
  • the Mo heater 107 is attached to the shelf 105 so as to cover the periphery of the metal capsule 200 arranged on the shelf 105, and heats the material powder 20 and the base material 11 together with the metal capsule 200. Thereby, the Mo heater 107 functions as a heating furnace for the material powder 20 and the base material 11.
  • the supply pipe 109 can supply a pressure medium into the space 113 from the outside.
  • the pressure medium include Ar gas as shown in FIG. 5 and inert gas such as nitrogen gas, which are appropriately selected according to the processing conditions.
  • the discharge pipe 111 is connected to a vacuum pump (not shown), and can discharge the gas existing in the space 113, for example, air or pressure medium existing before the HIP process, to the outside of the apparatus.
  • a plurality of metal capsules 200 are housed in the space 113 of the HIP device 100 as described above, and the Mo heater 107 is disposed around the metal capsules 200.
  • the inside of the space 113 is depressurized by the vacuum pump through the discharge pipe 111 so as to be in a vacuum atmosphere.
  • a pressure medium for example, Ar gas is introduced from the supply pipe 109, and the space 113 is placed in an Ar gas atmosphere.
  • HIP treatment is performed in an Ar gas atmosphere under conditions of, for example, a pressure of 1000 to 1500 kgf / cm 2 and a temperature of 1050 to 1250 ° C. for 1 to 3 hours. In addition, 1 kgf is about 9.8N.
  • the metal capsule 200 and the base material 11 and the material powder 20 that are the contents are loaded with an equal pressure by the pressure medium.
  • the coating layer 13 is formed on the base material 11.
  • a predetermined amount of W, Cr, C is present relatively uniformly, and these components cause nucleation relatively uniformly in the matrix, resulting in granularity. Carbides are formed.
  • the HIP process described above can be performed at a relatively low temperature, and the coating layer 13 can be formed while maintaining the shape of the hard particles 17.
  • the base material 11 and the coating layer 13 formed on the base material 11 may be cut out by cutting to obtain a desired shape. In this case, the entire metal capsule 200 may be cut.
  • the member for an in-bath apparatus according to the embodiment of the present invention will be specifically described with reference to Examples and Comparative Examples.
  • the Example shown below is only an example of the member for apparatus in bath which concerns on embodiment of this invention, Comprising: The member for apparatus in bath which concerns on embodiment of this invention is limited to the Example shown below. I don't mean.
  • the particle size and primary particle size of the hard particles were measured by a laser diffraction particle size distribution measurement method after classification at the raw material stage.
  • the shape and particle size of the carbide were observed and measured with an electron microscope.
  • shaft sleeves according to Comparative Examples 19 and 20 were manufactured by overlay welding. Specifically, first, a base material used as a base material is prepared, and a welding current of 160 to 200 A, a welding voltage of 20 to 25 V, a welding speed of 100 mm / min, and a powder amount of 25 to A covering layer was formed on the base material by overlay welding in the circumferential direction under the condition of 30 g / min.
  • Comparative Examples 19 and 20 employing the overlay welding method the precipitate was not granular, and a cobalt-based alloy dendrite was generated. Furthermore, in Comparative Examples 19 and 20, since the steel sheet slip occurred, it was suggested that the corrosion resistance of the shaft sleeve was inferior.

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  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
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Abstract

Le problème décrit par la présente invention est d'améliorer la résistance à la corrosion d'un élément destiné à un équipement dans des bains. La solution selon l'invention consiste en un élément pour équipement de bain utilisé pour un équipement de bain de métal fondu dans un dispositif de production de matériau de placage de métal fondu. L'élément d'équipement de bain comporte une couche de revêtement. La couche de revêtement comprend des particules dures et une matrice. La matrice est un alliage à base de cobalt qui contient, en % en masse, de 0,5 % à 3 % de C, de 15 % à 30 % de Cr, de 7 % à 21 % de W, de 0 % à 4 % de Si, de 0 % à 4 % de B et de 0 % à 30 % de Ni, le reste étant du Co et des impuretés inévitables, et comprend une section métallique et un carbure granulaire comprenant au moins soit du W soit du Cr précipité. Les particules dures comprennent une ou les deux parmi : au moins une substance simple choisie dans le groupe constitué par le carbure de tungstène, le carbure de ditungstène, le carbure de chrome, le carbure de titane et le carbure de niobium ; et/ou un granulé dans lequel la substance simple est granulée à l'aide d'un liant.
PCT/JP2018/007379 2018-02-27 2018-02-27 Élément pour équipement dans des bains, équipement dans un bain de métal fondu, et dispositif de production de matériau de placage de métal fondu WO2019167149A1 (fr)

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CN201880071929.XA CN111315919B (zh) 2018-02-27 2018-02-27 浴中设备用构件、熔融金属浴中设备及热浸镀金属材制造装置
PCT/JP2018/007379 WO2019167149A1 (fr) 2018-02-27 2018-02-27 Élément pour équipement dans des bains, équipement dans un bain de métal fondu, et dispositif de production de matériau de placage de métal fondu

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795914A (zh) * 2020-12-29 2021-05-14 中北大学 一种在模具钢表面制备原位自生TiC/NiCrBSi复合涂层的方法

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH07268648A (ja) * 1994-04-01 1995-10-17 Ofic Co 金属材料の複合表面処理方法
JPH07290186A (ja) * 1994-04-27 1995-11-07 Japan Steel Works Ltd:The 遠心鋳造用炭化タングステン複合ライニング材および炭化タングステン複合ライニング層
JP2000266055A (ja) * 1999-03-18 2000-09-26 Kinzoku Giken Kk 耐蝕耐摩耗性摺動部材およびその製造方法
JP2003247084A (ja) * 2002-02-25 2003-09-05 Ebara Corp 耐食性と耐摩耗性を有する被覆部材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07268648A (ja) * 1994-04-01 1995-10-17 Ofic Co 金属材料の複合表面処理方法
JPH07290186A (ja) * 1994-04-27 1995-11-07 Japan Steel Works Ltd:The 遠心鋳造用炭化タングステン複合ライニング材および炭化タングステン複合ライニング層
JP2000266055A (ja) * 1999-03-18 2000-09-26 Kinzoku Giken Kk 耐蝕耐摩耗性摺動部材およびその製造方法
JP2003247084A (ja) * 2002-02-25 2003-09-05 Ebara Corp 耐食性と耐摩耗性を有する被覆部材

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795914A (zh) * 2020-12-29 2021-05-14 中北大学 一种在模具钢表面制备原位自生TiC/NiCrBSi复合涂层的方法

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