WO2010001859A1 - Élément de transport d’un matériau à haute température - Google Patents

Élément de transport d’un matériau à haute température Download PDF

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Publication number
WO2010001859A1
WO2010001859A1 PCT/JP2009/061857 JP2009061857W WO2010001859A1 WO 2010001859 A1 WO2010001859 A1 WO 2010001859A1 JP 2009061857 W JP2009061857 W JP 2009061857W WO 2010001859 A1 WO2010001859 A1 WO 2010001859A1
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Prior art keywords
temperature
resistance
build
powder
film
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PCT/JP2009/061857
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English (en)
Japanese (ja)
Inventor
佳孝 西山
忠司 河上
敏秀 小野
三樹男 米山
佳宏 辰巳
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住友金属工業株式会社
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Publication of WO2010001859A1 publication Critical patent/WO2010001859A1/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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • B23K10/02—Plasma welding
    • B23K10/027—Welding for purposes other than joining, e.g. build-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244—Powders, particles or spheres; Preforms made therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3046—Co as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate

Definitions

  • the present invention relates to a high-temperature material conveying member suitable for supporting and conveying a steel material or other high-temperature material heated by heat treatment or the like, and in particular, a high-temperature material conveying member such as a conveyance roller or a skid button in a heat treatment furnace.
  • a high-temperature material conveying member such as a conveyance roller or a skid button in a heat treatment furnace.
  • a conveyance member such as a roller conveyor is used for conveyance of “high temperature material”.
  • the material of the base material of the conveying member has been made excellent in seizure resistance, such as Cr, Ni alloy steel, but that alone The fact is that a sufficient effect cannot be obtained. Therefore, as shown below, various members having a film formed on the surface of a base material have been proposed.
  • Patent Document 1 discloses that a heat resistant material in which 30 to 50% by volume of NbC is contained in a 3Cr-1Ni—Fe-based alloy is welded on the surface of a roller base material, and then an oxidizing atmosphere containing CO gas.
  • An invention has been disclosed in which a heat treatment is applied to provide a strong oxide scale film on the surface.
  • a hot transport roller excellent in wear resistance and seizure resistance can be manufactured, in which no adhesion occurs between the two surfaces of the hot material and the roller when the hot material is transported. .
  • Patent Document 2 discloses a two-layer coating comprising a metal-carbide composite coating containing 20 to 70% niobium carbide particles by volume on the surface of a base material and an oxide coating formed on the outermost surface of the coating.
  • a technology for preventing seizure of a hot tool is disclosed.
  • Patent Document 3 proposes an invention relating to a composite welding material for plasma powder welding overlay comprising an alloy powder composed of Cr, W, Fe, C and the balance Co and 20 to 70 wt% carbide ceramic powder.
  • Patent Document 4 proposes an invention relating to a build-up roll from cobalt or a cobalt-based alloy containing 20 to 60% by volume of chromium carbide.
  • Patent Document 5 discloses an invention relating to a surface treatment method for metal parts in which a powder obtained by adding Cr 3 C 2 to a Co—Cr—Fe alloy material is built up by plasma powder welding to form a lining layer.
  • Patent Document 6 discloses an invention relating to a high-temperature material conveying roller excellent in build-up resistance in which a metal-carbide composite film containing 20 to 70% by volume of carbide and the balance being made of metal is formed on the outermost surface.
  • Patent Document 7 in order to suppress the occurrence of cracks in the hardfacing layer, solidified in an unmelted state in which hard particles of carbide or carbonitride are partially melted into molten carbon steel, and further quenched. Has been proposed.
  • Patent Document 8 discloses an invention relating to a thermal spraying roll for treating steel materials having a thermal spray coating comprising 10 to 50 area% of hard particles having a particle size of 1 to 100 ⁇ m and 90 to 50 area% of a matrix alloy phase on the body surface.
  • Patent Document 9 discloses an electroplating conductor in which reprecipitated carbide is dispersed in a sprayed coating of a mixed powder composed of 10 to 60 wt% carbide cermet powder and 90 to 40 wt% C-containing nickel chromium alloy powder.
  • An invention relating to rolls is disclosed.
  • Patent Document 10 a cermet material of an alloy containing 50 to 90% by weight of chromium carbide and the balance of one or two of nickel and cobalt and one or two of chromium and aluminum is sprayed on the surface.
  • An invention relating to a roll in a heat treatment furnace having a carbide film excellent in build-up resistance, heat resistance, and wear resistance is disclosed.
  • Patent Document 11 repeatedly contains a heat-resistant alloy containing 5 to 30% by weight of one or more of carbides such as Cr, borides, oxides, and composite oxides, and the balance including Co, Cr, and Mo.
  • An invention relating to a thermal spray coating suitable for a sliding wear member subjected to thermal shock is disclosed.
  • Patent Document 12 for an in-furnace transport roll of a steel strip heat treatment furnace, Al, Cr and Y are contained, and the balance is one or more of alloy powder consisting of one or more of Co and Ni, and one or more of borides and carbides.
  • An invention relating to a cermet powder for thermal spray coating, which is made of a ceramic powder and has excellent build-up resistance, is disclosed.
  • Patent Document 13 contains 10 to 50 wt% of a mixture of carbides such as tungsten carbide, chromium carbide, niobium carbide, or one or more metal binders, with the balance C being 0.02 to 0.25 wt%,
  • Patent Document 1 and Patent Document 2 are to form a composite film of NbC and an alloy on a base material, and to prevent seizure.
  • NbC is poor in oxidation resistance, and cannot be stably present particularly in a high-temperature gas atmosphere, and the wear resistance is drastically lowered.
  • the techniques proposed in Patent Documents 3 to 5 are to form composite films of various carbides and metals including Cr carbides on a base material, and aim to improve wear resistance at high temperatures.
  • they become a hard and brittle metal structure, and cracks are likely to occur during cooling in plasma powder overlaying. Since the wear resistance is reduced at the crack portion, there is a problem that uniform quality cannot be obtained.
  • cracks are further generated and wear resistance is impaired.
  • the film proposed in Patent Document 6 also has a brittle metal structure with high hardness, it is difficult to avoid the occurrence of cracks, and oxide adhesion is easy at the cracks, resulting in reduced buildup resistance.
  • the aim is to suppress the occurrence of cracks in the hard and brittle build-up layer, but since it is a film made of carbon steel and a filler material, it has sufficient oxidation resistance. As a result, the surface of the coating changes and the wear resistance and buildup resistance deteriorate.
  • a film is formed by colliding and laminating a heated and melted coating material into a fine particle form with a gas flow. Therefore, in general, pores are easily formed in the film, and it cannot be said that the wear resistance and build-up resistance are sufficient.
  • the coating formed by the plasma powder overlaying method is melt-bonded (chemically bonded) to the base material, whereas the thermal sprayed coating and the base material are physically bonded, so the bonding force is weak. For this reason, the formed film peels off during use of the high-temperature material conveying roller, and the wear resistance and build-up resistance are drastically reduced.
  • the present invention provides a high-temperature material conveying member that is excellent in build-up resistance, wear resistance, and oxidation resistance in a high-temperature gas atmosphere, and that suppresses the occurrence of cracks during plasma powder overlaying.
  • a high-temperature material conveying member that has excellent build-up resistance and prevents the occurrence of indentation flaws when used in a high-temperature gas atmosphere, particularly at a high temperature that becomes a gas atmosphere of 1100 ° C. or higher. With the goal.
  • the present inventors form an overlaid film on the surface of the transport member, and the oxidation generated when the film is oxidized
  • the present invention has been made on the basis of such findings, and the gist thereof is a member for conveying a high-temperature material shown in the following (1) to (3).
  • the present invention even when a high-temperature material is transported in a high-temperature environment such as in a furnace of a heat treatment furnace, build-up does not occur over a long period of time, and indentation into the transport material does not occur. Moreover, the durability is also excellent. Therefore, in addition to improving the quality and yield of hot-worked products, it greatly contributes to reducing the manufacturing cost by extending the life of the conveying roller, and the effect is remarkable.
  • the member for conveying a high-temperature material according to the present invention has a Co-based alloy-Cr carbide composite film on the surface of the base material.
  • This composite film is formed by a plasma powder cladding method using a mixed powder composed of a Co-based alloy powder and a Cr carbide powder.
  • “%” for the content means “mass%”.
  • Co-based alloy powder C 0.03 to 0.6%
  • C has a function of increasing the hardness at high temperature, and in order to obtain this effect, it is necessary to contain 0.03% or more.
  • the content exceeds 0.6%, cracks are generated in the build-up film during cooling of the construction by plasma powder build-up, and the wear resistance and build-up resistance in the cracked portion are remarkably lowered. Therefore, the C content is 0.03 to 0.6%.
  • the upper limit is desirably 0.5%, and a more preferable upper limit is 0.4%. Moreover, said effect becomes more remarkable because C content shall be 0.1% or more.
  • Si 0.2-3% Si is an element that improves the oxidation resistance of the composite film in a high-temperature gas atmosphere, and it is necessary to contain 0.2% or more.
  • the Si content is 0.2 to 3%. From the viewpoint of oxidation resistance, the content is preferably 0.3% or more, and more preferably 0.5% or more. More preferred is 1% or more. In particular, when used in a gas atmosphere of 1100 ° C. or higher, the content is preferably 2% or less.
  • Cr 20-35%
  • Cr is an element effective for improving the oxidation resistance, and it is necessary to contain 20% or more.
  • the composite film becomes hard and brittle, and promotes cracks during overlaying.
  • the Cr content is 20 to 35%.
  • the minimum with preferable Cr content is 23%, and a preferable upper limit is 33%.
  • the content is preferably 25% or higher.
  • Co and impurities balance The Co-based alloy can increase the hardness at a high temperature as compared with the Ni-based alloy or the Fe-based alloy, and thus exhibits an effect on wear resistance. Accordingly, in the present invention, Co-based alloy powder is used as a basic component of the composite coating.
  • Mn, Cu, Ni, and Fe are elements that are effective for stabilizing the structure, and therefore are selected from these element groups as necessary.
  • the above can be contained. However, if it is excessively contained, the wear resistance of the composite film is lowered. Therefore, the content when these elements are contained is preferably 10% or less. The above effect can be obtained if the above elements are contained even in a trace amount, but the above effects become remarkable when each element is contained in an amount of 0.1% or more.
  • One or more of Mo and W 10% or less
  • B, Ti, V, Zr, Nb and Ta 3% or less
  • B, Ti, V, Zr, Nb, Mo, Ta and W increase the high-temperature strength. Therefore, if necessary, one or more selected from these element groups can be contained. However, if it is contained excessively, carbides, nitrides, embrittled phases and the like are precipitated in the steel, the structure becomes brittle, and cracks are likely to occur during overlaying. In addition, there is a risk of cracking due to sudden stop cooling during high temperature operation. Therefore, when one or more selected from Mo and W are contained, the content is preferably 10% or less, and one or more selected from B, Ti, V, Zr, Nb and Ta.
  • the content When it contains, it is preferable that the content shall be 3% or less, respectively. More preferable upper limit is 7% for Mo and W, and 1.4% for B, Ti, V, Zr, Nb and Ta, respectively.
  • the above effect can be obtained if the above element is contained even in a trace amount. However, the above effect becomes remarkable when B is 0.001% or more, and Ti, V, Zr, Nb, and Ta. Is the case where 0.01% or more is included, and Mo and W are each 0.1% or more.
  • Al, Ca, and REM 1% or less Al, Ca, and REM have a strong affinity for oxygen, and may be contained for fixing oxygen during overlaying. However, when it contains excessively, a coarse oxide will produce
  • the Al content is more preferably 0.3% or less, and the Ca and REM contents are each preferably 0.1% or less.
  • “REM” is a general term for a total of 17 elements of Sc, Y and lanthanoid, and the content of REM refers to the total content of the above elements.
  • the above effect can be obtained if the above elements are contained even in a trace amount, but the above effect becomes remarkable when Al is 0.005% or more, Ca is 0.001% or more, and REM. Is the case of containing 0.01% or more.
  • the Co-based alloy powder may contain elements such as P, S, N, and O as impurities.
  • the strength can be increased by positively containing these elements.
  • An impurity means a component that is mixed due to raw materials such as ore and scrap and other factors when an alloy material is produced industrially, and is allowed within a range that does not adversely affect the present invention.
  • Cr carbide Cr carbide has the effect of increasing high-temperature hardness while ensuring oxidation resistance at high temperatures. Therefore, it exhibits excellent oxidation resistance and wear resistance in the composite coating with the alloy powder. This is particularly effective in a gas atmosphere of 1100 ° C. or higher.
  • the Cr carbide include Cr 3 C 2 , Cr 7 C 3 , and Cr 23 C 6 .
  • these carbides may be combined.
  • the content of Cr carbide is not particularly defined, but is preferably 20% by volume or more in terms of the volume ratio with respect to the total amount of the mixed powder in order to improve the peelability of the oxide scale (A) on the composite film of the conveying member. . More preferred is 30% by volume or more.
  • content of Cr carbide exceeds 70% by volume, the build-up resistance improving action is saturated, the alloy ratio is reduced, the holding power of the carbide is reduced, and it becomes difficult to form a composite film. There is. In addition, cracks during plasma powder overlaying may be promoted. For this reason, it is preferable that content of Cr carbide
  • the size of the Cr carbide is not particularly limited, but it is effective to uniformly disperse it in the matrix. Therefore, it is preferable to use a carbide particle having an average diameter of 50 to 200 ⁇ m.
  • the shape of the carbide may be spherical, elliptical, rod-shaped, or the like, and these may be mixed.
  • the method for forming a composite film in the member for conveying a high-temperature material according to the present invention is a method in which the mixed powder is fed into plasma generated between an electrode and a base material, and a molten meat is formed on the surface of the base material.
  • a method of depositing, that is, a plasma powder overlaying method is used. According to this method, the porosity is lower than that of plasma spraying and the like, and the adhesion to the substrate is high, so that damage due to peeling can be reduced. Furthermore, it is possible to form a film easily and is advantageous in terms of production cost.
  • the thickness of the composite film is not particularly limited, but preferably has a thickness of 0.3 mm or more in order to ensure sufficient surface strength in the range from room temperature to high temperature.
  • the thickness is preferably 0.5 mm or more, and more preferably 1 mm or more.
  • Endothermic reaction temperature It is important that a composite film obtained by overlaying a mixed powder of Co-based alloy powder and Cr carbide by plasma powder overlaying does not change the structure state associated with the reaction at high temperature.
  • the endothermic reaction temperature of the film is less than 1250 ° C., sufficient build-up resistance and wear resistance may not be maintained as a conveying member for a high-temperature heat treatment furnace, for example, higher than 1200 ° C. to 1250 ° C. . Therefore, the endothermic reaction temperature is preferably 1250 ° C. or higher.
  • the temperature at which the reaction starts is controlled by the composition of the alloy powder of the composite film, the hard particle type, the mixing ratio thereof, and the like.
  • the endothermic temperature can be obtained from a change in the electromotive force accompanying the endotherm by cutting out a test piece from the composite film and measuring the electromotive force with, for example, TG-DTA (differential thermal balance).
  • Base material of high-temperature material conveying member As the base material of the high-temperature material conveying member according to the present invention, known steels conventionally used for conveying rollers and the like can be used. In particular, when used in a high-temperature furnace (in a high-temperature atmosphere), it is necessary that deformation due to repeated thermal stress and cracking due to the progress of cracks do not occur. These may be selected as appropriate. For example, stainless cast steel, heat-resistant cast steel, etc. may be used.
  • the composite film After the composite film is formed on the base material surface, it can be used as a product as it is. Moreover, you may give stress relief annealing, the cutting process of an outer surface, etc. suitably.
  • mixed powders (trial numbers 1 to 12 and 14) obtained by mixing alloy powders and carbide powders having the chemical composition shown in Table 1 so that the volume ratio is the same amount, and alloy powders (trial number 13) Prepared.
  • a coating having a thickness of about 0.5 to 3 mm was formed on the surface of a base material made of a Ni—Cr alloy by a plasma powder overlaying method, and used as a test material.
  • test material A a cylindrical test piece having a diameter of 20 mm and a length of 50 mm was cut out so that the surface on which the coating film was formed becomes the end face of the test piece.
  • test material B A columnar test piece having a length of 50 mm was cut out and subjected to a build-up test using the testing machine shown in FIG.
  • FIG. 1 is a schematic cross-sectional view showing the configuration of a rotary friction pressure bonding tester that simulates the occurrence of build-up.
  • This testing machine is an experimental apparatus that simulates a build-up that occurs when a high-temperature material is conveyed by a conveying member such as a roller conveyor in a heat treatment furnace.
  • reference numeral 1 is a cylindrical test material A simulating a high-temperature material conveying member
  • reference numeral 2 is a film formed on the end face of the test material A
  • reference numeral 3 is a cylindrical test material B simulating the material to be conveyed.
  • Reference numeral 4 denotes a high-frequency heating coil
  • reference numerals 5a and 5b denote test material supports
  • reference numeral 6 denotes a heating chamber.
  • the heating chamber was closed, the high-frequency heating coil was energized, held for 1 hour, and the test material A was heated to 1250 ° C. in the atmosphere.
  • the test material B (reference numeral 3) was stopped at the upper standby position of the test material A as shown in FIG.
  • the test material B was lowered and the end surface thereof was pressed against the surface of the composite film of the test material A.
  • the load P applied to the test material B was 98 N
  • the rotation speed was 5 rpm
  • the pressure contact time in one cycle of pressure welding was 6 seconds.
  • test material B was returned to the upper standby position, and this was set as one cycle of pressure welding work. After this pressure welding operation was repeated 100 cycles, the temperature was lowered, the test material A was removed from the support, and the occurrence of buildup was investigated by visual observation. This process was repeated until build-up occurred. Table 1 shows the number of cycles in which build-up occurred.
  • the time from the start of lowering of the test material B to the start of pressure welding and the time from the end of pressure welding to the completion of lifting are both 15 seconds, and the time until the end of 100 cycles is about 1 hour, and thereafter about 1 Cooled to near room temperature over time.
  • the thickness reduction thickness was 200 micrometers or less that it was excellent in oxidation resistance.
  • film thickness in Table 1 indicates the film thickness of the test piece used in the build-up test and the high-temperature oxidation test.
  • the film thicknesses of the test pieces for the heat crack test are all 3 mm.
  • trial number 6 with low C content in the alloy powder trial number 8 with high C content and low endothermic reaction temperature, trial number 11 with high Si content, and Nb carbide powder as hard particles.
  • Sample No. 12 sample No. 13 in which a build-up film was formed only with Co-based alloy powder, and sample No. 14 mainly composed of Fe of the alloy powder were generated in a short period of 200 cycles or less. And it was inferior in build-up resistance.
  • sample number 9 with a low Cr content in the alloy powder sample number 10 with a low Si content
  • sample number 12 using Nb carbide sample number 14 which is an Fe-based alloy powder are all high-temperature oxidation tests.
  • the thinning thickness was large and the oxidation resistance was poor.
  • Sample Nos. 7 and 8 with a high C content and Sample No. 11 with a high Si content and a low endothermic reaction temperature had cracks in the heat crack test and were inferior in heat crack resistance.
  • trial numbers 1 to 5 of the present invention were excellent in any of build-up resistance, oxidation resistance and heat crack resistance.
  • the present invention even when a high-temperature material is transported in a high-temperature environment such as in a furnace of a heat treatment furnace, build-up does not occur over a long period of time, and indentation into the transport material does not occur. Moreover, the durability is also excellent. Therefore, in addition to improving the quality and yield of hot-worked products, it greatly contributes to reducing the manufacturing cost by extending the life of the conveying roller, and the effect is remarkable.
  • Cylindrical test material A (test material imitating a high-temperature material conveying member) 2: Coating 3: Cylindrical test material B (test material simulating material to be conveyed) 4: High-frequency heating coil 5a: Test material support (with rotation and lifting mechanism) 5b: Test material support 6: Heating chamber

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

L'invention porte sur un élément de transport d’un matériau à haute température qui présente une excellente résistance à l'accumulation, à l'oxydation et à la cassure à chaud. L'élément de transport d’un matériau à haute température comporte un matériau de base et un film de revêtement formé sur la surface du matériau de base. Dans l'élément, le film de revêtement est un film de revêtement composite produit par un procédé de soudage à l'arc à transfert par plasma, utilisant une poudre mélangée composée d'une poudre d'alliage à base de Co et d'une poudre de carbure de Cr, la poudre d'alliage à base de Co comportant les composants suivants (% en masse) : C : 0,03 à 0,6 %, Si : 0,2 à 3 %, et Cr : 20 à 35 %. L'élément de transport d’un matériau à haute température présente une excellente résistance à l'accumulation, en particulier dans une atmosphère gazeuse d’au moins 1100°C.
PCT/JP2009/061857 2008-07-02 2009-06-29 Élément de transport d’un matériau à haute température WO2010001859A1 (fr)

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JP2008172875A JP4412563B2 (ja) 2008-07-02 2008-07-02 高温材搬送用部材
JP2008-172875 2008-07-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2514854A1 (fr) * 2009-12-16 2012-10-24 Sumitomo Metal Industries, Ltd. Élément pour le transport de matières à haute température
CN103231182A (zh) * 2012-09-13 2013-08-07 山东建筑大学 一种氩弧堆焊FeCrC铁基粉末合金配方及其制备工艺
CN103737196A (zh) * 2012-10-17 2014-04-23 沈阳工业大学 一种含Si、Cr复合陶瓷相的耐磨堆焊合金及其制备工艺

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JP5787543B2 (ja) * 2011-02-15 2015-09-30 株式会社クボタ 肉盛溶接構造

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JPS63255352A (ja) * 1987-04-10 1988-10-21 Kawasaki Steel Corp 高温鋼板搬送用被覆ロ−ル
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JPH02165896A (ja) * 1989-11-10 1990-06-26 Kubota Ltd 溶接肉盛用複合粉末溶接材
JPH03207510A (ja) * 1990-01-10 1991-09-10 Ofic Co 肉盛ロールおよびその製造方法
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JPS62134193A (ja) * 1985-12-06 1987-06-17 Kubota Ltd 溶接肉盛用複合粉末溶接材
JPS6352793A (ja) * 1986-08-22 1988-03-05 Mitsubishi Steel Mfg Co Ltd 耐ビルドアツプ性にすぐれたハ−スロ−ル
JPS63255352A (ja) * 1987-04-10 1988-10-21 Kawasaki Steel Corp 高温鋼板搬送用被覆ロ−ル
JPS6411093A (en) * 1987-07-02 1989-01-13 Kubota Ltd Composite welding material for plasma powder welded overlay
JPS6418599A (en) * 1987-07-14 1989-01-23 Kubota Ltd Composite welding material for plasma pulverulent body welding build-up
JPH0289593A (ja) * 1988-09-26 1990-03-29 Kubota Ltd 熱処理炉用ハースロールの表面肉盛溶接材料
JPH02121798A (ja) * 1988-10-31 1990-05-09 Tokushu Denkyoku Kk コイラー用肉盛ロール
JPH02165896A (ja) * 1989-11-10 1990-06-26 Kubota Ltd 溶接肉盛用複合粉末溶接材
JPH03207510A (ja) * 1990-01-10 1991-09-10 Ofic Co 肉盛ロールおよびその製造方法
JP2004025268A (ja) * 2002-06-27 2004-01-29 Jfe Steel Kk 耐摩耗性に優れた肉盛ガイド部材およびその製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2514854A1 (fr) * 2009-12-16 2012-10-24 Sumitomo Metal Industries, Ltd. Élément pour le transport de matières à haute température
EP2514854A4 (fr) * 2009-12-16 2015-01-14 Nippon Steel & Sumitomo Metal Corp Élément pour le transport de matières à haute température
CN103231182A (zh) * 2012-09-13 2013-08-07 山东建筑大学 一种氩弧堆焊FeCrC铁基粉末合金配方及其制备工艺
CN103737196A (zh) * 2012-10-17 2014-04-23 沈阳工业大学 一种含Si、Cr复合陶瓷相的耐磨堆焊合金及其制备工艺

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