KR20080019423A - Furance roll theraml spary coating material - Google Patents

Furance roll theraml spary coating material Download PDF

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KR20080019423A
KR20080019423A KR1020060081743A KR20060081743A KR20080019423A KR 20080019423 A KR20080019423 A KR 20080019423A KR 1020060081743 A KR1020060081743 A KR 1020060081743A KR 20060081743 A KR20060081743 A KR 20060081743A KR 20080019423 A KR20080019423 A KR 20080019423A
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coating material
annealing furnace
weight
roll
furnace roll
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KR1020060081743A
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Korean (ko)
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KR101153353B1 (en
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박봉규
김종익
김선국
안종필
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주식회사 포스코
주식회사 서머텍 코리아
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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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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  • Mechanical Engineering (AREA)
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  • Physics & Mathematics (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Coating By Spraying Or Casting (AREA)

Abstract

A furnace roll thermal spray coating material is provided to prevent the generation of mark during the annealing process, thereby preventing the generation of microdent and scratch. A furnace roll thermal spray coating material comprises 50 wt% of a ceramic solid powder; and 50 wt% of a CoNiCrAlTa alloy. Preferably the ceramic solid powder is a mixture comprising 50 wt% of alumina (Al2O3) and 50 wt% of chromia (Cr2O3) or a mixture comprising 20 wt% of alumina, 20 wt% of chromia and 10 wt% of yttrium oxide (Y2O3).

Description

소둔로 롤 용사 코팅재{FURANCE ROLL THERAML SPARY COATING MATERIAL}Annealing Furnace Roll Sprayed Coating Material {FURANCE ROLL THERAML SPARY COATING MATERIAL}

도 1은 본 발명의 제1실시예에 따른 소둔로 롤 용사 코팅재의 적용을 통한 소둔로 롤 표면의 상태를 도시한 도면이다.1 is a view showing a state of the surface of the annealing furnace roll through the application of the annealing furnace roll spray coating material according to a first embodiment of the present invention.

도 2는 본 발명의 제2실시예에 따른 소둔로 롤 용사 코팅재의 적용을 통한 소둔롤 표면의 상태를 도시한 도면이다.2 is a view showing a state of the surface of the annealing roll through the application of the annealing furnace roll spray coating material according to a second embodiment of the present invention.

도 3은 종래 기술에 따른 소둔로 롤의 표면을 도시한 도면이다.3 is a view showing the surface of the annealing furnace roll according to the prior art.

도 4는 도 3의 소둔로 롤의 표면에 부착된 이물질을 도시한 도면이다.4 is a view showing a foreign matter attached to the surface of the annealing furnace roll of FIG.

본 발명은 소둔로 롤 용사 코팅재에 관한 것으로, 보다 상세하게는 소둔 작업시 소둔로 롤의 표면에 이물질의 부착됨을 방지하여, 스트립에 흠이 발생되지 않도록 하는 소둔로 롤 용사 코팅재에 관한 것이다.The present invention relates to an annealing furnace roll spray coating material, and more particularly, to an annealing furnace roll spray coating material that prevents foreign matter from adhering to the surface of the annealing furnace roll during annealing operation, so that a flaw does not occur in the strip.

일반적으로 소둔로(Furance) 롤(Roll)의 용사 코팅은 고온 산화에 의한 픽업(pick up) 방지용으로 엠클러리합금(CoNiCrAlTa)을 코팅 재질로 사용한다.In general, the thermal spray coating of the furnace roll uses a nickel alloy (CoNiCrAlTa) as a coating material to prevent pick-up by high temperature oxidation.

도 3은 종래 기술에 따른 소둔로 롤의 표면을 도시한 도면이고, 도 4는 도 3의 소둔로 롤의 표면에 부착된 이물질을 도시한 도면이다.3 is a view showing the surface of the annealing furnace roll according to the prior art, Figure 4 is a view showing a foreign material attached to the surface of the annealing furnace roll of FIG.

도 3 및 도 4에 도시된 바와 같이, 엠클러리 합금은 고온에서 스트립에서 산화되는 Si, Fe, Mn, Al, Zn 등에 의해 핵으로 성장하여 소둔로 롤(1)의 용사 표면에 융착되어 분리되지 않는 현상이 발생된다.As shown in Figs. 3 and 4, the mcl alloy is grown to a nucleus by Si, Fe, Mn, Al, Zn, etc., which are oxidized in the strip at a high temperature, so as not to be fused to the sprayed surface of the annealing furnace roll 1 Does not occur.

따라서, 소둔로 롤(1)의 표면에는 Si, Fe, Mn, Al, Zn 등에 의해 산화된 이물질이 형성되고, 이 이물질(3)에 의해 소둔 작업시 스트립에 미소 덴트(Dent) 및 스크레치(Scratch)가 발생되는 문제점이 있다.Therefore, foreign matters oxidized by Si, Fe, Mn, Al, Zn, etc. are formed on the surface of the annealing furnace roll 1, and the fine dents and scratches are formed on the strip during annealing by the foreign matters 3. ) Is a problem that occurs.

본 발명은 상기 전술한 바와 같은 문제점들을 해결하기 위해 창출된 것으로서, 소둔 작업시 소둔로 롤의 표면에 이물질 부착됨을 방지하여, 스트립의 표면 손상이 발생되지 않도록 하는 소둔로 롤 용사 코팅재를 제공하는데 그 목적이 있다.The present invention has been made to solve the problems as described above, to provide an annealing furnace roll spray coating material to prevent foreign matter adheres to the surface of the annealing furnace roll during annealing operation, so that no surface damage of the strip occurs. There is a purpose.

상기 목적을 달성하기 위한 본 발명의 소둔로 롤 용사 코팅재는, 세라믹계 고형분말 50중량%와 엠클러리 합금 50중량%로 혼합된다.The annealing furnace roll spray coating material of this invention for achieving the said objective is mixed by 50 weight% of ceramic solid powders and 50 weight% of mcl alloys.

본 발명에 있어서, 상기 세라믹계 고형분말은, 알루미나와 크로미아의 혼합물인 것을 특징으로 한다.In the present invention, the ceramic solid powder is a mixture of alumina and chromia.

본 발명에 있어서, 상기 세라믹계 고형분말은, 알루미나 50중량%와 크로미나 50중량%로 혼합되는 것을 특징으로 한다.In the present invention, the ceramic solid powder is characterized in that the mixture of 50% by weight of alumina and 50% by weight of chroma.

본 발명에 있어서, 상기 세라믹계 고형분말은, 알루미나와 크로미아와 이트륨 옥사이드의 혼합물인 것을 특징으로 한다.In the present invention, the ceramic solid powder is a mixture of alumina, chromia, and yttrium oxide.

본 발명에 있어서, 상기 세라믹계 고형분말은 알루미나 20중량%와, 크로미아 20중량%와 이트륨 옥사이드 10중량%로 혼합는 것을 특징으로 한다.In the present invention, the ceramic-based solid powder is characterized by mixing 20% by weight of alumina, 20% by weight of chromia and 10% by weight of yttrium oxide.

이하 본 발명의 바람직한 실시예에 따른 소둔로 롤 용사 코팅재를 첨부된 도면을 참조하여 상세히 설명한다. 그러나 본 발명은 이하에서 개시되는 실시예에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예는 본 발명의 개시가 완전하도록 하며, 통상의 지식을 가진자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이다.Hereinafter, an annealing furnace roll spray coating material according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

도 1은 본 발명의 제1실시예에 따른 소둔로 롤 용사 코팅재의 적용을 통한 소둔로 롤 표면의 상태를 도시한 도면이다.1 is a view showing a state of the surface of the annealing furnace roll through the application of the annealing furnace roll spray coating material according to a first embodiment of the present invention.

이러한 소둔로 롤(10)의 표면은 소둔로 롤 용사 코팅재를 통해 용사 코팅된다. 소둔로 롤 용사 코팅재는 세라믹계 고형분말 50중량%와 엠클러리 합금 50중량%로 혼합된다.The surface of this annealing furnace roll 10 is spray-coated through the annealing furnace roll spray coating material. The annealing furnace roll spray coating material is mixed with 50% by weight of the ceramic-based solid powder and 50% by weight of the acrylic alloy.

여기서, 세라믹계 고형분말은 소둔로 롤(roll)(10)의 픽업(pick up) 방지에 큰 효과를 갖는다. 즉, 세라믹계 고형분말을 통해 소둔로 롤의 작업 표면에 Si, Fe, Mn, Al, Zn 등의 부착이 발생되지 않도록 함으로써, 롤 표면에 Si, Fe, Mn, Al, Zn등의 산화로 발생되는 종래 이물질(3)의 발생 방지가 가능하도록 한다.Here, the ceramic-based solid powder has a great effect in preventing pick-up of the roll 10 of the annealing furnace. That is, the adhesion of Si, Fe, Mn, Al, Zn, etc. to the working surface of the annealing furnace roll through the ceramic-based solid powder does not occur, thereby generating the oxidation of Si, Fe, Mn, Al, Zn, etc. on the roll surface. It is possible to prevent the occurrence of the conventional foreign matter (3).

이러한 세라믹계 고형분말이 용사 코팅재로서 100% 사용되지 않고 엠클러리 합금과 혼합됨은, 용사 코팅재의 소둔로 롤과의 밀착력을 높이도록 하기 위함이다. 소둔로 롤과 용사 코팅재 간의 밀착력을 높임에 의해, 용사 코팅재의 열충격에 의한 박리의 방지가 가능하다.The ceramic-based solid powder is not used 100% as a thermal spray coating material and mixed with the mcl alloy to increase adhesion to the roll by annealing the thermal spray coating material. By increasing the adhesive force between the annealing furnace roll and the sprayed coating material, it is possible to prevent peeling due to thermal shock of the sprayed coating material.

이러한 용사 코팅재의 용사 방법은 플라즈마 용사방법으로 용사됨이 바람직 하다. 플라즈마 용사는 세라믹 분말을 고온의 화염 또는 플라즈마로 순간적으로 용융시킨뒤, 용융된 입자를 고속으로 가속시켜 금속 또는 세라믹 모재 표면 상에 0.1 내지 1.0mm 두께의 후막증(thick film)을 형성시키는 표면 처리 기술을 말한다. 이러한 기술은 비교적 값싼 모재 상에 다양한 특성을 갖는 세라믹 재료의 후막층을 형성시켜 내플라즈마성, 내부식성, 내마모성, 내산화성, 절연성, 단열성 등의 표면 성질을 개선시킬 수 있다.The thermal spraying method of the thermal spray coating material is preferably sprayed by a plasma spraying method. Plasma spraying instantly melts the ceramic powder into a hot flame or plasma and then accelerates the molten particles at high speed to form a 0.1-1.0 mm thick thick film on the metal or ceramic matrix surface. Says technology. Such a technique can form a thick film layer of a ceramic material having various properties on a relatively inexpensive base material to improve surface properties such as plasma resistance, corrosion resistance, wear resistance, oxidation resistance, insulation, and heat insulation.

상기 세라믹계 고형분말은, 알루미나(

Figure 112006061817025-PAT00001
)와 크로미아(
Figure 112006061817025-PAT00002
)의 혼합물로 이루어진다. 이때, 알루미나(
Figure 112006061817025-PAT00003
)와 크로미아(
Figure 112006061817025-PAT00004
)의 혼합비율은, 알루미나(
Figure 112006061817025-PAT00005
) 50중량%와 크로미아 50중량%로 혼합됨이 바람직하다. 여기서, 알루미나(
Figure 112006061817025-PAT00006
)와 크로미아(
Figure 112006061817025-PAT00007
)의 혼합됨은, 비중이 높은 크로미아(
Figure 112006061817025-PAT00008
)가 비중이 작은 알루미나(
Figure 112006061817025-PAT00009
)를 감싸도록 함으로써, 용사 작업시에 비중이 상대적으로 작은 알루미나(
Figure 112006061817025-PAT00010
)가 용사되지 않고 비산되는 것을 방지하기 위함이다. 따라서, 알루미나(
Figure 112006061817025-PAT00011
)와 크로미아(
Figure 112006061817025-PAT00012
)의 용이한 혼합됨을 위해, 각각 50중량%의 동일 비율로 혼합됨이 바람직하다.The ceramic solid powder is alumina (
Figure 112006061817025-PAT00001
) And Chromia (
Figure 112006061817025-PAT00002
Consists of a mixture of At this time, alumina (
Figure 112006061817025-PAT00003
) And Chromia (
Figure 112006061817025-PAT00004
), The mixing ratio is alumina (
Figure 112006061817025-PAT00005
) 50% by weight and 50% by weight chromia is preferred. Where alumina (
Figure 112006061817025-PAT00006
) And Chromia (
Figure 112006061817025-PAT00007
) Is mixed with high specific gravity chromia (
Figure 112006061817025-PAT00008
Alumina ()
Figure 112006061817025-PAT00009
) So that the specific gravity of the sprayed alumina (
Figure 112006061817025-PAT00010
) Is not sprayed to prevent scattering. Therefore, alumina (
Figure 112006061817025-PAT00011
) And Chromia (
Figure 112006061817025-PAT00012
For easy mixing, it is preferred that they are mixed in equal proportions of 50% by weight each.

상기 엠클러리 합금(CoNiCrAlTa)은 세라믹계 고형분말과 동일 중량% 즉, 50중량%로 혼합된다. 따라서, 엠클러리 합금(CoNiCrAlTa)과 세라믹계 고형분말이 함께 혼합된 상태로 용사되도록 함으로써, 소둔로 롤과 밀착력이 향상된 상태의 용사가 가능하도록 한다.The mCl alloy (CoNiCrAlTa) is mixed with the ceramic-based solid powder in the same weight%, that is, 50% by weight. Therefore, by spraying the mCl alloy (CoNiCrAlTa) and the ceramic-based solid powder in a mixed state together, it is possible to spray in an annealing furnace roll and improved adhesion.

도 2는 본 발명의 제2실시예에 따른 세라믹계 고형분말 50중량%와 엠클러리 합금 50중량%의 혼합된 용사재를 통한 코팅시 소둔로 롤(20) 표면 상태를 도시한 도면이다. 여기서, 세라믹계 고형분말은 알루미나(

Figure 112006061817025-PAT00013
) 20중량%와 크로미아(
Figure 112006061817025-PAT00014
) 20중량%와 이트륨 옥사이드 10중량%의 혼합된 상태이다.2 is a view showing the surface of the annealing furnace roll 20 during coating through a mixed spray material of 50% by weight of the ceramic-based solid powder and 50% by weight of the acrylic alloy according to the second embodiment of the present invention. Here, the ceramic solid powder is alumina (
Figure 112006061817025-PAT00013
20 weight% and chromia (
Figure 112006061817025-PAT00014
) 20% by weight and yttrium oxide 10% by weight in a mixed state.

상기 세라믹계 고형분말은 알루미나(

Figure 112006061817025-PAT00015
)와 크로미아(
Figure 112006061817025-PAT00016
)에 더하여 이트륨 옥사이트 10 중량%의 함유됨을 통해, 소둔로의 소둔 열처리 과정에서 소둔로 롤에 이물질(3)의 부착성이 약화되도록 한다. 이러한 이트륨 옥사이드(
Figure 112006061817025-PAT00017
)는 제1실시예 보다 고온의 소둔 열처리 과정에 적용된다.The ceramic solid powder is alumina (
Figure 112006061817025-PAT00015
) And Chromia (
Figure 112006061817025-PAT00016
In addition to 10% by weight of yttrium oxite, the adhesion of the foreign matter (3) to the annealing furnace roll during the annealing heat treatment process of the annealing furnace is weakened. Such yttrium oxide (
Figure 112006061817025-PAT00017
) Is applied to the annealing heat treatment process at a higher temperature than in the first embodiment.

도 2에 도시된 바와 같이, 본 발명의 제2실시예에 따른 용사재를 통해 용사된 롤의 표면에는 마크에 의한 미소 덴트 및 스크레치의 발생이 없는 상태를 확인 가능하다.As shown in Figure 2, the surface of the roll sprayed through the thermal spraying material according to the second embodiment of the present invention can be confirmed a state without the occurrence of micro dents and scratches by the mark.

이상, 본 발명을 도면에 도시된 실시예를 참조하여 설명하였다. 그러나, 본 발명은 이에 한정되지 않고 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명과 균등한 범위에 속하는 다양한 변형예 또는 다른 실시예가 가능하다. 따라서, 본 발명의 진정한 보호범위는 이어지는 특허청구범위에 의해 정해져야 할 것이다.The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope equivalent to the present invention are possible by those skilled in the art. Therefore, the true scope of protection of the present invention should be defined by the following claims.

상기와 같은 본 발명에 따른 소둔로 롤 용사 코팅재는 다음과 같은 효과를 갖는다.The annealing furnace roll spray coating material according to the present invention as described above has the following effects.

소둔 작업에 사용되는 롤 표면에 마크(mark)에 의한 미소 덴트(dent) 및 스 크레치의 발생방지가 가능함으로써, 소둔 열처리 작업시 스트립의 작업 품질 향상이 가능하다.It is possible to prevent the occurrence of minute dents and scratches due to marks on the roll surface used in the annealing operation, thereby improving the work quality of the strip during the annealing heat treatment operation.

Claims (5)

세라믹계 고형분말 50중량%와 엠클러리 합금 50중량%로 혼합된 소둔로 롤 용사 코팅재.Annealing furnace roll spray coating material mixed with 50% by weight of ceramic-based solid powder and 50% by weight of mcl alloy. 제1항에 있어서,The method of claim 1, 상기 세라믹계 고형분말은,The ceramic solid powder, 알루미나(
Figure 112006061817025-PAT00018
)와 크로미아(
Figure 112006061817025-PAT00019
)의 혼합물인 것을 특징으로 하는 소둔로 롤 용사 코팅재.Alumina (
Figure 112006061817025-PAT00018
) And Chromia (
Figure 112006061817025-PAT00019
Annealing furnace roll spray coating material, characterized in that a mixture of). 제2항에 있어서,The method of claim 2, 상기 세라믹계 고형분말은,The ceramic solid powder, 알루미나(
Figure 112006061817025-PAT00020
) 50중량%와 크로미아(
Figure 112006061817025-PAT00021
) 50중량%로 혼합되는 것을 특징으로 하는 소둔로 롤 용사 코팅재.Alumina (
Figure 112006061817025-PAT00020
50% by weight and chromia (
Figure 112006061817025-PAT00021
Annealing furnace roll spray coating material, characterized in that mixed by 50% by weight. 제1항에 있어서,The method of claim 1, 상기 세라믹계 고형분말은,The ceramic solid powder, 알루미나(
Figure 112006061817025-PAT00022
)와 크로미아(
Figure 112006061817025-PAT00023
)와 이트륨 옥사이드(
Figure 112006061817025-PAT00024
)의 혼합물인 것을 특징으로 하는 소둔로 롤 용사 코팅재.Alumina (
Figure 112006061817025-PAT00022
) And Chromia (
Figure 112006061817025-PAT00023
) And yttrium oxide (
Figure 112006061817025-PAT00024
Annealing furnace roll spray coating material, characterized in that a mixture of). 제4항에 있어서,The method of claim 4, wherein 상기 세라믹계 고형분말은 알루미나(
Figure 112006061817025-PAT00025
) 20중량%와, 크로미아(
Figure 112006061817025-PAT00026
) 20중량%와 이트륨 옥사이드(
Figure 112006061817025-PAT00027
) 10중량%로 혼합되는 것을 특징으로 하는 소둔로 롤 용사 코팅재.The ceramic solid powder is alumina (
Figure 112006061817025-PAT00025
20% by weight and chromia (
Figure 112006061817025-PAT00026
20 wt% yttrium oxide
Figure 112006061817025-PAT00027
Annealing furnace roll spray coating material, characterized in that mixed by 10% by weight.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585572A (en) * 2012-02-29 2012-07-18 上海师范大学 Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof
EP2703759A1 (en) * 2012-09-04 2014-03-05 Schwartz, Eva Load-bearing medium for ovens
KR20190050766A (en) * 2016-07-18 2019-05-13 사인트-고바인 인두스트리에 케라믹 레덴탈 게엠베하 A roller for a roller furnace having at least one coating on its surface
CN115283669A (en) * 2022-08-08 2022-11-04 洛阳金鹭硬质合金工具有限公司 Thermal spraying powder for protective coating on surface of high-temperature furnace roller and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270082B1 (en) 1996-12-18 2000-10-16 이구택 The spray coating method of herath roll

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585572A (en) * 2012-02-29 2012-07-18 上海师范大学 Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof
EP2703759A1 (en) * 2012-09-04 2014-03-05 Schwartz, Eva Load-bearing medium for ovens
KR20190050766A (en) * 2016-07-18 2019-05-13 사인트-고바인 인두스트리에 케라믹 레덴탈 게엠베하 A roller for a roller furnace having at least one coating on its surface
CN115283669A (en) * 2022-08-08 2022-11-04 洛阳金鹭硬质合金工具有限公司 Thermal spraying powder for protective coating on surface of high-temperature furnace roller and preparation method thereof
CN115283669B (en) * 2022-08-08 2023-10-13 洛阳金鹭硬质合金工具有限公司 Thermal spraying powder for high-temperature furnace roller surface protective coating and preparation method thereof

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