WO2009150867A1 - Matériau de pulvérisation thermique et rouleau de four - Google Patents

Matériau de pulvérisation thermique et rouleau de four Download PDF

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Publication number
WO2009150867A1
WO2009150867A1 PCT/JP2009/053429 JP2009053429W WO2009150867A1 WO 2009150867 A1 WO2009150867 A1 WO 2009150867A1 JP 2009053429 W JP2009053429 W JP 2009053429W WO 2009150867 A1 WO2009150867 A1 WO 2009150867A1
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WO
WIPO (PCT)
Prior art keywords
resistance
rare earth
hearth roll
thermal spray
content
Prior art date
Application number
PCT/JP2009/053429
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English (en)
Japanese (ja)
Inventor
辰洋 重光
淳一 安岡
Original Assignee
日鉄ハード株式会社
パウレックス株式会社
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Application filed by 日鉄ハード株式会社, パウレックス株式会社 filed Critical 日鉄ハード株式会社
Priority to JP2010516773A priority Critical patent/JPWO2009150867A1/ja
Publication of WO2009150867A1 publication Critical patent/WO2009150867A1/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides

Definitions

  • the present invention relates to a hearth roll for transporting a steel plate disposed in a continuous heat treatment furnace and a thermal spray material thereof, and in particular, a hearth roll excellent in Mn build-up resistance, thermal shock resistance, and wear resistance and thermal spraying thereof. It relates to materials.
  • a hearth roll placed in a steel plate heat treatment furnace is used for a long time in a weakly oxidizing or reducing atmosphere at 600 to 1300 ° C. For this reason, the following characteristics are mainly required on the surface of the hearth roll.
  • Fe oxide or iron powder adheres to the steel sheet, and during transportation of the steel sheet, these Fe oxide or iron powder adheres and accumulates on the surface of the hearth roll to form a build-up. Furthermore, in recent years, build-up of Mn oxide has become a problem due to an increase in high-tensile steel and changes in furnace operating conditions. Therefore, the hearth roll is required to have build-up resistance against Fe-based materials and Mn-based materials.
  • the hearth roll Since the hearth roll slides and wears when the steel plate contacts the hearth roll during conveyance, the hearth roll is required to have wear resistance.
  • the coating on the surface of the hearth roll may be peeled off due to sliding wear, build-up, or thermal shock. Further, when the steel sheet comes into contact with the hearth roll from which the film has been peeled off, wrinkles are generated on the surface of the steel sheet, causing deterioration in quality.
  • Patent Document 1 discloses a heat treatment furnace roll having a ceramic film made of Ti-based nitride or Ti-based carbide and excellent in build-up resistance and wear resistance.
  • Ti-based nitrides and Ti-based carbides are materials having excellent wear resistance and build-up resistance.
  • Patent Document 3 discloses a microscopic structure in which TiN particles covered with a metal oxide layer (excluding iron oxide) stable at 1400 ° C. are dispersed in a metal (excluding iron and iron alloy) matrix made of a refractory metal at 900 ° C.
  • a hearth roll having a surface coating layer composed of two layers, a surface layer having a structure and a bonding metal layer as a base of the surface layer.
  • the wear resistance and thermal shock resistance of the coating are improved by making the coating cermet and providing a bonding layer between the coating and the roll base material.
  • TiN was coated with a metal to prevent oxidation of TiN during thermal spraying, and the coated metal became an oxide to have abradability and improve buildup resistance.
  • Patent Document 2 has a general formula MCrAlY having an Al content of 10 at% or less and an (Al + Cr) content of 13 at% or more and 31 at% or less (wherein M is selected from the group consisting of Fe, Ni and Co).
  • a hearth roll having a thermal spray coating made of a cermet thermal spray material obtained by mixing a heat resistant alloy of one metal element) with an oxide having a low manganese oxide reactivity and a weight ratio of 5 to 90% is disclosed.
  • Patent Document 4 contains Cr: 5 to 35% by mass, C: 3% by mass or less, and Ni: 3 to 25% by mass, W: 3 to 25% by mass, and Ta: 3 to 25% by mass.
  • One or more selected from oxide-based ceramics, carbide-based ceramics, and boride-based ceramics in an alloy containing a total of 3 to 40% by mass of one or more types and the balance Co and inevitable impurities A hearth roll surface coating material is disclosed, which is a composite material in which 5 to 80% by mass of several kinds of ceramics are dispersed, and the Al component in the composite material is 1% by mass or less in terms of Al.
  • Patent Document 5 is a thermal spraying powder for an in-furnace roll formed by mixing an alloy powder and a ceramic powder, and spraying the roll surface to form a film, and the alloy powder has an Al content relative to the total amount of the alloy powder. 3 to 8 mass%, the balance being one or more alloy powders selected from Co and Ni, and 40 to 80 mass% with respect to the total amount of the sprayed powder. Disclosed is a thermal spray powder comprising 10-30 mass% Y 2 O 3 and Cr 3 C 2 . JP-A-63-250449 JP-A-8-67960 JP-A-10-195547 Japanese Patent Laid-Open No. 2002-256363 JP-A-2003-27204
  • Fe is the main component of build-up, but in recent years, the main component of build-up has changed from Fe to Mn due to an increase in high-tensile steel, furnace operating conditions, and other changes.
  • Patent Document 3 the oxidation of TiN during spraying cannot be sufficiently prevented, and the flight time of the sprayed material is too short (on the order of several msec), so that the coating metal is hardly oxidized, The build-up resistance was not sufficient.
  • Patent Document 2 when the ratio of MCrAlY is large, the thermal shock resistance and wear resistance are improved, but the build-up resistance due to the limited content of Al and Cr was not sufficiently obtained. . Moreover, when the ratio of ceramics was large, the thermal shock resistance and wear resistance were insufficient.
  • Patent Document 5 in order to compensate for the drawbacks in Patent Document 4, Al in the matrix is reduced from that of Patent Document 2 to 3 to 8% and Cr is eliminated, but Al is contained to some extent. Therefore, buildup could not be prevented sufficiently, and since there was no Cr, the oxidation resistance was inferior, and sufficient effects could not be exhibited.
  • the present invention has been made to solve such problems, and has a long-life hearth roll having excellent build-up resistance to Mn-based materials, and having excellent thermal shock resistance and wear resistance.
  • the purpose is to provide.
  • the thermal spray material sprayed on the surface of the hearth roll of the present invention includes Al-containing heat-resistant metals (including alloys) that can be used at 900 ° C. or higher, and rare earth elements (Sc, Y, When the content of Al is A (mol) and the content of rare earth elements (Sc, Y, lanthanum and lanthanoid) is B (mol), it is 0. .3 ⁇ (A / B) ⁇ 4.0 is satisfied.
  • the oxide may contain one or more rare earth elements (Sc, Y, lanthanum and lanthanoid).
  • the refractory metal is MAl (M is one or more of transition metal elements excluding group 3A, Ag, Cu and Mn in the periodic table) or MAl (RE) (M is a periodic rule). It can be composed of one or more transition metal elements excluding Group 3A, Ag, Cu and Mn in the table, and (RE) is composed of one kind of rare earth element).
  • the above-mentioned sprayed material can be sprayed on the roll surface of the hearth roll. Moreover, it is preferable to set the film thickness of the sprayed film on the roll surface to 10 ⁇ m or more and 1000 ⁇ m or less.
  • a hearth roll having excellent build-up resistance, thermal shock resistance, and wear resistance for a Mn-based material and having a long life.
  • the MnAl double oxide produced mainly on the surface of the hearth roll is the starting point of the buildup.
  • This MnAl complex oxide is presumed that Al present in the vicinity of the roll surface or Al 2 O 3 produced by oxidation and MnO provided by the steel sheet are produced by the following reaction.
  • the thermal spray coating containing Al is formed on the surface layer of the hearth roll, and the steel sheet conveyed by the hearth roll contains Mn.
  • the present inventors did not reduce the Al content, but included an oxide composed of a rare earth element and oxygen in the film.
  • Al in the refractory metal Al necessary for obtaining oxidation resistance was left so as not to react with Mn, and the others were successfully changed to a complex oxide that hardly reacts with MnO.
  • the composition of the thermal spray material will be described in detail.
  • the thermal spray material applied to the hearth roll excellent in Mn build-up resistance, thermal shock resistance, and wear resistance of the present embodiment includes a heat-resistant metal (including an alloy) that can be used at 900 ° C. or higher including Al, and a rare earth And oxides composed of elements (Sc, Y, lanthanum and lanthanoid) and oxygen.
  • M is composed of one or more transition metal elements excluding group 3A, Ag, Cu and Mn of the periodic table, specifically, Ti, V, Cr, Fe, Co, Ni, Zr, Nb. , Mo, Tc, Ru, Rh, Pd, Hf, Ta, W, Re, Os, Ir, Pt, and Au.
  • RE is composed of one kind of rare earth element, more specifically, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb. , Consisting of one of Lu.
  • FeCrAlY, NiCrAlY, CoCrAlY, CoNiCrAlY, FeCrAl, NiCrAl, CoCrAl, CoNiCrAl can be used as the refractory metal.
  • non-metals such as C and Si can be contained in the heat-resistant metal.
  • the oxide may contain one or two rare earth elements (Sc, Y, lanthanum and lanthanoid). More preferably, Y 2 O 3 (oxide), La 2 O 3 (oxide), LaScO 3 (double oxide), or YScO 3 (double oxide) can be used as the oxide. Note that the oxides described in the claims include double oxides.
  • the content of Al contained in the thermal spray material (heat-resistant metal) is A (mole) and the content of rare earth elements (Sc, Y, lanthanum and lanthanoid) contained in the thermal spray material is B (mole)
  • A The composition ratio of Al and rare earth elements (Sc, Y, lanthanum and lanthanoid) must be set so that / B) is 0.3 to 4.0.
  • (A / B) is lower than 0.3, there are too many rare earth elements (too much oxide), and the thermal shock resistance value of the thermal spray coating becomes low.
  • (A / B) is higher than 4.0, there is too much Al and build-up resistance is lowered.
  • the composition ratio of Al and rare earth elements (Sc, Y, lanthanum and lanthanoid) is set so that (A / B) is 0.5 to 2.0.
  • the thermal spray material of this embodiment can be obtained, for example, by mixing an oxide of rare earth elements (Sc, Y, lanthanum and lanthanoid) and a refractory metal powder containing Al and usable at 900 ° C. or higher. Moreover, in order to promote the double oxide formation of Al, it can also be obtained by adding an organic binder to a heat-resistant metal powder that can be used at 900 ° C. or higher containing fine rare earth elements and fine Al and granulating it. As the granulation method, a general spray granulation method, a fluidized bed granulation method, a mechanical alloying method, or the like can be used.
  • the above reaction occurs by heating during thermal spraying, and it is possible to produce a rare earth element and Al double oxide.
  • the binder treatment and sintering are performed, and the rare earth element and Al double oxide are formed at the stage of the thermal spray material. It is more suitable if the production is promoted.
  • the thermal spraying method of the thermal spray material of this embodiment is not particularly limited, but flame spraying, plasma spraying, HVOF spraying, explosion spraying, and the like can be applied. Among them, HVOF spraying and explosion spraying that can form a dense film with little thermal influence are preferable.
  • the thickness of the sprayed coating is preferably 10 mm or more and 1000 mm or less. If it is less than 10 mm, the effect of the film cannot be exhibited. If it is greater than 1000 mm, the residual stress is large and the film may be peeled off.
  • M′CrAlY (M ′ is one or more metal elements selected from Fe, Ni, Co), NiCr between the thermal spray coating and the roll base material.
  • a base sprayed coating such as an alloy, Hastelloy alloy, Inconel alloy, Ni—Al, or Mo may be interposed.
  • the thermal spray material according to the embodiment of the present invention has a thermal spray coating formed on the surface of the hearth roll substrate, thereby providing excellent build-up resistance, thermal shock resistance, and wear resistance against Mn.
  • a long-life hearth roll can be provided.
  • TP a test piece
  • SUS304 for Mn build-up resistance test: 15 ⁇ 15 ⁇ 10 mm
  • wear resistance test 30 ⁇ 50 ⁇ 5 mm
  • thermal shock for the property test: 50 ⁇ 50 ⁇ 10 mm
  • a film was formed on the TP surface by a thermal spraying method (high-speed gas spraying method), and the following tests were performed.
  • FIG. 1 is a schematic view of a testing machine for evaluating the Mn build-up resistance of TP.
  • the two sprayed coatings 11A and 12A of the sprayed TP11 and TP12 are arranged to face each other, the buildup raw material MnO powder is sandwiched between the sprayed coatings 11A and 12A, and a load is applied from above the TP11. This was placed in an electric furnace and allowed to stand for about 25 hours at a constant temperature of 950 ° C. in a reducing atmosphere of N 2 -5% H 2 . Table 1 shows the test conditions.
  • EPMA electron beam microanalyzer
  • FIG. 2 is a schematic view of a testing machine for evaluating the wear resistance of TP. The following test was performed to evaluate the wear resistance. As shown in FIG. 2, a “Suga-type wear tester” was used for the experiment. An emery paper 22 is wound around the outer surface of the rotating roller 21. The thermal spray coating 31A of TP31 is in contact with the emery paper 22. TP31 can reciprocate in the horizontal direction. Table 2 shows the test conditions.
  • the TP 31 is reciprocated once in the horizontal direction, and the spray coating 31A is slid against the emery paper 22.
  • the rotating roller 21 is slightly rotated to bring the unused surface of the emery paper 22 into contact with the thermal spray coating 31A.
  • the abrasion resistance is evaluated by the number of reciprocations of TP required to wear 1 mg of the thermal spray coating [Double Stroke (DS) / mg]. Those with a TP reciprocation frequency of less than 20 DS / mg were evaluated as poor (x), and those with 20 DS / mg or more were evaluated as good ( ⁇ ).
  • Table 4A shows Invention Examples 1 to 42, and Table 4B shows compositions of Comparative Examples 1 to 12.
  • Table 5 shows the test results and evaluation of Mn build-up resistance, thermal shock resistance, and abrasion resistance
  • Table 5A shows Invention Examples 1 to 42
  • Table 5B shows Comparative Examples 1 to 12. ing. When all the evaluation items were good ( ⁇ ) or higher, the overall evaluation was good ( ⁇ ). When all the evaluation items were good ( ⁇ ) or more and two or more of the evaluation items were excellent ( ⁇ ), the overall evaluation was excellent ( ⁇ ). A single item with a bad ( ⁇ ) evaluation was evaluated as a comprehensive evaluation failure ( ⁇ ).
  • Inventive Examples 1 to 42 are formed by forming a thermal spray coating on the TP surface by a thermal spraying method, and the thickness is set in the range of 10 to 1000 ⁇ m.
  • the Al content contained in the refractory metal (A mole) / in the coating The value of the total rare earth element content (B mole) is set to 0.3 to 4.0.
  • Invention Examples 1 to 42 showed good results in the Mn build-up test, the wear resistance test, and the thermal shock resistance test. Among them, for a thermal sprayed coating having a value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the coating of 0.5 to 2.0, an Mn build-up test, In the thermal shock resistance test, the evaluation was excellent ( ⁇ ), and the overall evaluation was excellent ( ⁇ ).
  • Comparative Examples 1 and 2 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is out of the range of 0.3 to 4.0. This is different from Invention Examples 1-6. As shown in Table 5, Comparative Example 1 has poor thermal shock resistance test results, Comparative Example 2 has poor total Mn adhesion thickness and Mn penetration depth in Mn build-up resistance test, and overall evaluation is poor ( X).
  • Comparative Examples 3 and 4 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is outside the range of 0.3 to 4.0. This is different from Invention Examples 7 to 10. As shown in Table 5, in Comparative Example 3, the thermal shock resistance test result is poor, and in Comparative Example 4, the total of Mn adhesion thickness and Mn penetration depth in the Mn build-up resistance test is poor, and the overall evaluation is poor ( X).
  • Comparative Examples 5 and 6 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is outside the range of 0.3 to 4.0. This is different from Invention Examples 11-14. As shown in Table 5, Comparative Example 5 has a poor thermal shock resistance test result, and Comparative Example 6 has a poor Mn adhesion thickness and Mn penetration depth in the Mn build-up resistance test. X).
  • Comparative Examples 7 and 8 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is outside the range of 0.3 to 4.0. This is different from Invention Examples 15 to 18. As shown in Table 5, Comparative Example 7 has a poor thermal shock resistance test result, and Comparative Example 8 has a poor total evaluation of Mn adhesion thickness and Mn penetration depth in the Mn build-up resistance test. )
  • Comparative Examples 9 and 10 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is out of the range of 0.3 to 4.0. This is different from Invention Examples 19-22. As shown in Table 5, Comparative Example 9 has poor thermal shock resistance test results, Comparative Example 10 has poor total Mn adhesion thickness and Mn penetration depth in the Mn build-up resistance test, and the overall evaluation is poor ( ⁇ )
  • Comparative Examples 11 and 12 the value of Al content (A mole) contained in the refractory metal / total rare earth element content (B mole) in the film is outside the range of 0.3 to 4.0. This is different from Invention Examples 23 to 26. As shown in Table 5, Comparative Example 11 has a poor thermal shock resistance test result, and Comparative Example 12 has a poor total evaluation of Mn adhesion thickness and Mn penetration depth in the Mn build-up resistance test. )

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

L'invention concerne un rouleau de four qui présente une excellente résistance à l'accumulation d'une substance contenant du Mn, une excellente résistance aux chocs thermiques, une excellente résistance à l'usure et une longue durée de vie. On divulgue en particulier un matériau de pulvérisation thermique à pulvériser thermiquement à la surface d'un rouleau de four. Le matériau de pulvérisation thermique comprend un métal réfractaire (notamment un alliage) qui contient Al et qui peut être utilisé à une température égale ou supérieure à 900˚C et un oxyde composé d'un élément de terre rare (Sc, Y, lanthane ou lanthanoïde) et de l'oxygène, la teneur en Al (A) (en moles) et la teneur en l'élément de terre rare (Sc, Y, lanthane ou lanthanoïde) (B) (en moles) vérifiant la condition représentée par la formule : 0,3 ≤ (A/B) ≤ 4,0.
PCT/JP2009/053429 2008-06-10 2009-02-25 Matériau de pulvérisation thermique et rouleau de four WO2009150867A1 (fr)

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JP2008152040 2008-06-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10280499B2 (en) 2014-12-30 2019-05-07 Industrial Technology Research Institute Composition and coating structure applying with the same
CN114616351A (zh) * 2019-12-23 2022-06-10 日本制铁株式会社 连续退火炉用炉底辊

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0417625A (ja) * 1990-05-11 1992-01-22 Sumitomo Metal Ind Ltd ハースロール
JPH0693328A (ja) * 1992-09-14 1994-04-05 Daido Steel Co Ltd 酸化物分散強化型合金を用いたハースロール
JP2001011540A (ja) * 1999-06-29 2001-01-16 Sumitomo Metal Ind Ltd 連続熱処理用ハースロール

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4229508B2 (ja) * 1999-01-29 2009-02-25 第一高周波工業株式会社 高温ハースローラー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0417625A (ja) * 1990-05-11 1992-01-22 Sumitomo Metal Ind Ltd ハースロール
JPH0693328A (ja) * 1992-09-14 1994-04-05 Daido Steel Co Ltd 酸化物分散強化型合金を用いたハースロール
JP2001011540A (ja) * 1999-06-29 2001-01-16 Sumitomo Metal Ind Ltd 連続熱処理用ハースロール

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10280499B2 (en) 2014-12-30 2019-05-07 Industrial Technology Research Institute Composition and coating structure applying with the same
CN114616351A (zh) * 2019-12-23 2022-06-10 日本制铁株式会社 连续退火炉用炉底辊

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