KR20050062764A - Run out table roll of hot rolled steel's manufacturing method - Google Patents

Run out table roll of hot rolled steel's manufacturing method Download PDF

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KR20050062764A
KR20050062764A KR1020050047760A KR20050047760A KR20050062764A KR 20050062764 A KR20050062764 A KR 20050062764A KR 1020050047760 A KR1020050047760 A KR 1020050047760A KR 20050047760 A KR20050047760 A KR 20050047760A KR 20050062764 A KR20050062764 A KR 20050062764A
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alloy
roll
base
manufacturing
weight
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KR1020050047760A
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Korean (ko)
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홍명수
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홍명수
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • 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
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2204/00—End product comprising different layers, coatings or parts of cermet

Abstract

본 발명은 구동력이 걸리는 테이블롤(Table Roll) 특히, 고온의 강판(Steel) 열간 압연에 사용되며 높은 마찰력을 보유하면서 고온에서의 내마모성과 소착과 부식이 발생되지 않은 롤(Roll)의 제작 방법에 관한 것이며, 고온에서의 내마모성과 내소착, 내응착성, 내부식성을 갖고 있는 니켈계(Ni Base) 혹은 코발트계(Co Base)의 자용성합금 피복에 미세한 기공을 만들어 주므로서 마찰력이 높은 자용성합금 피복의 롤(Roll)을 만든다. The present invention relates to a method for manufacturing a roll that does not generate wear resistance, sintering and corrosion at high temperature while having high frictional force and is used in a table roll that is driven by a driving force, in particular, hot rolling of high temperature steel. It is related to the high friability while making fine pores on the coating of the magnetic base alloy of nickel base (Ni base) or cobalt base (Co base) which has abrasion resistance, adhesion, adhesion and corrosion resistance at high temperature. Make a roll of alloy cladding.

본 발명은 마찰력이 큰 금속과 복합된 자용성합금 피복층을 만들어 고성능의 열연 테이블롤(Table Roll)을 만드는 제작방법이다.The present invention is a manufacturing method of making a high-performance hot rolled table roll by making a magnetic alloy coating layer composited with a metal with high frictional force.

Description

열간 압연 강재의 런아웃테이블롤 제작방법{Run Out Table Roll Of Hot Rolled Steel's Manufacturing Method}Run Out Table Roll Of Hot Rolled Steel's Manufacturing Method

본 발명은 강판(Steel)의 열간압연 생산라인에서 사용되는 롤(Roll)에서 요구되는 내마모성과 내소착성, 내열성이 요구되는 동시에 높은 마찰력을 갖게 하는 표면물성 개질법을 도입한 롤(Roll)에 관한 것이다.The present invention relates to a roll incorporating a surface property modification method that requires high wear resistance, wear resistance, heat resistance, and heat resistance required in a roll used in a hot rolling production line of steel. will be.

종래에는 주로 내마모 주철과 고주철 강재의 편면 또는 양면에 다른 강을 얇게 붙여서 피복한 클래드튜브롤(Clad Tube Roll) 중량%25% 이하의 Cr계 용접 하드훼이싱롤(Hardfacing Roll)등이 사용되어 왔다.Conventionally, Cr-based welding hardfacing rolls having a weight of 25% or less by clad tube roll coated by thinly pasting other steels on one or both sides of wear-resistant cast iron and high cast iron steel have been used. .

STEEL의 열간압연에는 제조기술이 발전하여 고온의 강판이 초당 수십m에 이르는 고속으로 생산되고 있어 고급화되는 강판의 품질 관리에는 우수한 품질의 롤(Roll)이 매우 필요하게 되었다.In the hot rolling of STEEL, manufacturing technology has been developed and high temperature steel sheets are produced at high speed of several tens of meters per second.

그 조건에는 이송되는 강판의 속도와 롤(Roll)의 표면속도가 거의 같도록 하는 공정 기술이 발휘할 수 있는 Roll의 정밀도 유지 때문에 고온의 강판과 열간압연시 발생되는 스케일에 의하여 부착되거나 강판의 소착 또는 응착이 되지 않고 마모가 잘되지 않으며 더불어 강판과 미끌림(Slip) 발생이 없어야 하며 냉각수에 의한 내부식성 또한 필요하다.Under such conditions, due to the high accuracy of the rolls, which can be exhibited by a process technology that allows the speed of the conveyed steel sheet to be substantially the same as the surface speed of the rolls, it can be adhered to or adhered to by hot scale and hot rolling. It does not adhere and wears well, and there should be no steel sheet and slip, and corrosion resistance by cooling water is also required.

즉, 고온의 철판이 고속 이송시 어떤 결함도 발생시키지 않고 동시에 내마모성도 갖고 있는 표면성질이 해결되어야 할 과제이다.In other words, the high temperature iron plate does not cause any defects at the time of high speed transfer, and at the same time, the surface property having wear resistance is a problem to be solved.

주철은 내소착성과 내식성, 내마모성이 부족하여 2~3개월에 롤(Roll)의 레벨을 조정하여야 하며 고크롬계 용접인 하드훼이싱롤(Hardfacing Roll)은 내마모성은 좋으나 소착 및 응착이 발생하여 강재(Steel)의 제품에 흠집을 내는 심각한 문제가 있다.Cast iron has low adhesion, corrosion resistance and abrasion resistance, so the level of roll should be adjusted in 2 ~ 3 months.Hardfacing rolls, which are high chromium welding, have good abrasion resistance but harden and adhere. There is a serious problem that scratches the steel products.

청구항에 나열된 특수성분이 첨가되지 않은 자용성합금은 내마모성과 내소착.응착성은 좋으나 마찰계수가 낮아 열간압연 강재테이블롤(Steel Table Roll)에는 부적합하여 부분적으로 밖에 사용되지 못했다.Self-alloying alloys without the special ingredients listed in the claims have good wear resistance, adhesion and adhesion, but have a low coefficient of friction and are not suitable for hot rolled steel table rolls.

이 자용성합금을 사용하기 위해서는 마찰력을 미끌림이 발생되지 않도록 하는 개선방안이 필요하였다.In order to use this soluble alloy, improvement measures were required to prevent friction from slipping.

내마모성과 내소착성, 내응착성 높은 마찰계수가 동시에 요구되는 문제를 해결하기 위해 본발명자는 이연구를 거듭하여 롤(Roll)의 표면에 자용합금과 금속 또는 금속단체의 합금혼합물이 적합하다는 것을 알게 되어 본발명이 완성 되었다. 본 발명은 니켈계(Ni Base) 또는 코발트계(Co Base) 자용성합금과In order to solve the problem of high friction coefficient, high wear resistance and high adhesion resistance, the inventors have repeated this study to find that alloy mixtures of magnetic alloys and metals or metal groups are suitable for the surface of rolls. The present invention was completed. The present invention is based on nickel-based (Ni Base) or cobalt-based (Co Base) soluble alloy

중량% ① 2~25% Fe 또는 Fe합금 Weight% ① 2 ~ 25% Fe or Fe Alloy

② 2~25% Mo 또는 Mo합금       ② 2 ~ 25% Mo or Mo alloy

③ 2~25% Fe 또는 Fe합금과 Mo 또는 Mo합금의 혼합물의 혼합물질로 구성되며 내마모성을 개선하기 위해 중량% 60%이하의 카바이트(Carbide)를 첨가하여 금속 복합 자용성합금을 사용한다.       ③ It is composed of a mixture of 2 ~ 25% Fe or Fe alloy and Mo or Mo alloy. To improve abrasion resistance, use metal composite magnetic alloy by adding Carbide of 60% by weight or less.

본 발명 방법에 따라서 강재(Steel)의 열간압연용 표면다공질 런아웃테이블롤(Run Out Table Roll)의 제작 방법을 설명한다.According to the method of the present invention will be described a method for producing a hot rolled surface porous run out table roll (Steel).

본 발명은 롤(Roll)의 표면에 금속과 자용성합금의 혼합물 또는 이 혼합물에 써멧트(Cremat) 또는 세라믹(Ceramic)을 섞은 복합 혼합물로 형성된 재료를 용사하여 형성된 피복을 자용합금의 용융온도로 가열시켜 야금적으로 결합된 표층부의 혼합된 철 또는 Mo등 용해, 부식되기 쉬운 단체, 혼합물이 용해 또는 부식되어 사용시에 표층이 다공질화되며 세라믹과 써메트가 혼재된 피복은 더욱더 요철부가 만들어져 고속으로 이송되는 강재(Steel)의 런아웃테이블롤(Run Out Table Roll)에 내마모성과 높은 마찰계수라는 이질적인 성질을 갖게 해준다.According to the present invention, a coating formed by spraying a material formed of a mixture of a metal and a magnetic alloy on the surface of a roll or a composite mixture of cermat or ceramic in the mixture is applied to the melting temperature of the magnetic alloy. Melt or corrosive substances such as mixed iron or Mo mixed with metallurgically bonded surface layer by heating, melted or corroded, and the surface layer becomes porous at the time of use. The run out table roll of steel being conveyed has a heterogeneous property of wear resistance and high coefficient of friction.

본 발명이 강재 열간압연을 표면다공질 런아웃테이블롤(Run Out Table Roll)의 표면 자용성합금 용사층의 조성범위는 코발트계 또는 니켈계 자용합금에 중량% ① 2~25%의 Fe 또는 Fe합금, ② 2~25%의 Mo 또는 Mo합금, ③ 2~25%의 ①과②의 혼합물, ④ ①,②,③ 에 60%이하의 카바이트(Carbide)(WC, NBC, Cr₃C₂등)를 섞은 복합혼합물에 불가피한 불순물로 구성된다.According to the present invention, the composition range of the surface-soluble alloy sprayed layer of the surface porous run out table roll of steel hot-rolled steel is about 2% to 25% Fe or Fe alloy by weight of cobalt-based or nickel-based magnetic alloy, ② 2 ~ 25% Mo or Mo alloy, ③ 2 ~ 25% mixture of ① and ②, ④ ①, ②, ③ mixed compound with less than 60% of Carbide (WC, NBC, Cr₃C₂, etc.) It consists of inevitable impurities.

본 발명의 가장 큰 요점은 표층을 기공 또는 요철부가 되게 만들어 마찰계수를 크게 하는 것으로써 상술한 혼합물이 자용합금이 용융온도에서 합금화되지 않을 정도의 미립화된 크기의 분말을 선정, 혼합하여 사용시에 이혼합물이 합금화되지 않고 야금적결합 형태를 갖고 있어 자기 고유의 성질을 그대로 갖고 있다.The main point of the present invention is to make the surface layer into pores or uneven parts to increase the coefficient of friction, so that the above-mentioned mixtures can be selected and mixed with a finely divided powder of such a size that the magnetic alloy is not alloyed at the melting temperature. The mixture is not alloyed and has a metallurgical bonding form, which retains its own properties.

표층에서만 탈락하거나 돌출부를 만들어 피복층내부에서는 야금적결합을 하고 있으므로서 사용시에 내부는 결함없는 피복 형태를 하므로서 고온 또는 고하중에서도 균열 또는 박리현상이 전혀 없는 피복이 된다.It is a coating that has no cracks or peeling phenomenon even at high temperature or high load because the inside of the coating layer has a metallurgical bonding in the coating layer and a metallurgical bonding inside the coating layer.

본 발명에 적용되는 피복법은 프라즈마(Plazmz), 고속용사(High Velocity Oxygen Spraying), 가스용사,등 자용성합금이 용사 가능한 모든 용사법이 적용되며 용사후 재용융(Fusing)처리를 하며 일반적인 용사공정과 같이 전후처리를 한다.The coating method applied to the present invention is plasma spraying, high velocity spray (High Velocity Oxygen Spraying), gas spraying, etc. All the spraying methods that can be sprayed with a soluble alloy is applied, and after the spraying, re-melting (Fusing) process and general spraying process As before and after processing.

본 발명은 명칭된 롤(Roll)에만 한정되는 것이 아니다. The invention is not limited to only named rolls.

소착. 응착의 발생이 없고, 합금화되지 않는 야금적결합 형태를 갖고 있어 자기 고유의 성질을 그대로 유지하며 고열에 의한 이상현상이 없으며, 내마모성 종전의 기술보다 10배이상이 좋아지며 저경도(Hs60)과 같은 경도의 마찰계수가 나오고 있으며 고속 이송에 큰 효과를 나타낸다. 일반적으로는 불가능한 경도 Hs70~Hs100의 고경도 자용성합금에서도 0.3정도의 높은 마찰계수를 갖는 방법이다.Sticking. There is no adhesion, it has a metallurgical bonding form that is not alloyed, it retains its own properties and there is no abnormal phenomenon due to high heat, and it is more than 10 times better than the conventional technology of abrasion resistance, such as low hardness (Hs60) The friction coefficient of hardness is coming out and it shows a big effect in high speed feed. It is a method that has a high coefficient of friction of about 0.3 even in high hardness magnetic alloys of hardness Hs70 to Hs100, which are generally impossible.

도1은 자용합금에 특수성분을 첨가하여 제조된 복합합금층 부재의 단면도1 is a cross-sectional view of a composite alloy layer member prepared by adding a special component to a magnetic alloy

도2는 확산되기전 자용합금 피복의 현미경 조직사진Figure 2 is a microscopic histogram of a magnetic alloy coating before diffusion

도3은 확산후 자용합금 피복의 현미경 조직사진Figure 3 is a microscopic histogram of the coating of the magnetic alloy after diffusion

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1. 자용합금층                   1. Edition of Alloy

2. 모재(Base Metal)                    2. Base Metal

3. 산화.용해된 부분                   3. Oxidized and dissolved part

4. 특수성분을 첨가한 복합 다공질 자용합금 피복층                   4. Composite Porous Alloy Coating Layer with Special Ingredients

Claims (5)

니켈계(Ni Base) 또는 코발트계(Co Base) 자용성합금 분말에 Fe성분 중량% 2~25% 되는 철 또는 합금분말을 섞어 혼합분말을 만든다.Nickel-based or cobalt-based magnetic alloy powder is mixed with iron or alloy powder having a Fe content of 2% to 25% by weight to form a mixed powder. 니켈계(Ni Base) 또는 코발트계(Co Base) 자용성합금 분말에 Mo성분 중량% 2~25% 되는 Mo 또는 Mo합금분말을 섞어 혼합분말을 만든다.      Nickel-based or cobalt-based magnetic alloy powder is mixed with Mo or Mo alloy powder having a Mo component weight of 2 to 25% by weight. 니켈계 또는 코발트계 자용성합금 분말에 Fe과 Mo성분의 합이 중량% 2~25% 되는 Mo 또는 Mo합금과 Fe 또는 Fe합금의 혼합된 분말을 섞어 혼합 분말을 만든다.      Nickel-based or cobalt-based magnetic alloy powder is mixed with Mo or Mo alloy and Fe or Fe alloy in which the sum of Fe and Mo components is 2 to 25% by weight. 청구항 1,2,3의 조성에 내마모성을 개선하기 위하여 고경도 카바이드(Carbide)(WC, NBC, Cr₃C₂)를 중량% 50%이하로 합금하는 분말을 만든다.      In order to improve the wear resistance in the compositions of claims 1,2 and 3, powders of high hardness carbide (WC, NBC, Cr₃C₂) are alloyed to 50% by weight or less. 청구항 1,2,3,4의 분말로 자용합금의 우수한 성질과 Carbide의 내마모성이 포함된 마찰력이 큰 자용성합금 복합 피복층을 만든다.      The powder of Claims 1, 2, 3 and 4 provides a highly frictional insoluble alloy composite coating layer including the excellent properties of the magnetic alloy and the wear resistance of the carbide.
KR1020050047760A 2005-06-03 2005-06-03 Run out table roll of hot rolled steel's manufacturing method KR20050062764A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100857287B1 (en) * 2006-07-26 2008-09-08 홍명수 self-fluxing alloy powders and roll having spraying coating layer
KR100931664B1 (en) * 2007-12-21 2009-12-14 주식회사 포스코 Abrasion resistant scale brake work roll
GB2464108A (en) * 2008-10-02 2010-04-07 John Lapping Coating for glass container plungers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100857287B1 (en) * 2006-07-26 2008-09-08 홍명수 self-fluxing alloy powders and roll having spraying coating layer
KR100931664B1 (en) * 2007-12-21 2009-12-14 주식회사 포스코 Abrasion resistant scale brake work roll
GB2464108A (en) * 2008-10-02 2010-04-07 John Lapping Coating for glass container plungers

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