KR100878875B1 - Coating method of cylinder sleeve - Google Patents

Coating method of cylinder sleeve Download PDF

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Publication number
KR100878875B1
KR100878875B1 KR1020070050808A KR20070050808A KR100878875B1 KR 100878875 B1 KR100878875 B1 KR 100878875B1 KR 1020070050808 A KR1020070050808 A KR 1020070050808A KR 20070050808 A KR20070050808 A KR 20070050808A KR 100878875 B1 KR100878875 B1 KR 100878875B1
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South Korea
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cylinder sleeve
wall
sleeve
forming
spraying
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KR1020070050808A
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Korean (ko)
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KR20080103723A (en
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김창준
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주식회사뉴테크
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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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/004—Cylinder liners

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

본 발명은 실린더 슬리브의 외벽 코팅 방법에 관한 것으로서, 전기 아크 와이어 용사 방법을 이용하여 실린더 슬리브의 외벽을 용사 코팅하는 방법에 있어서,The present invention relates to a method for coating the outer wall of the cylinder sleeve, the method for spray coating the outer wall of the cylinder sleeve using an electric arc wire spraying method,

실린더 슬리브 외벽의 기름 및 이물질을 제거하는 단계, 실린더 슬리브 표면을 샌드블라스팅기를 이용하여 조도를 형성하는 단계, 용사기를 이용하여 160 ~ 240㎛두께의 용사코팅작업층을 형성하는 단계로 구성되는 것을 특징으로 한다.Removing oil and foreign substances from the outer wall of the cylinder sleeve, forming roughness on the surface of the cylinder sleeve using a sandblasting machine, and forming a spray coating layer having a thickness of 160 to 240 μm using a thermal spraying machine. It is done.

따라서 본 발명에 의한 실린더 슬리브의 외벽 코팅 방법 실린더 슬리브 외벽의 기름 및 이물질을 제거하는 단계와, 실린더 슬리브 표면을 샌드블라스팅기를 이용하여 조도를 형성하는 단계, 용사기를 이용하여 160 ~ 240㎛두께의 용사코팅작업층을 형성하는 단계를 거쳐 슬리브 외벽 표면과 블록 주조 형성시 주조물과의 밀착력과 결합력이 우수한 효과가 있다.Therefore, the method for coating the outer wall of the cylinder sleeve according to the present invention comprises the steps of removing oil and foreign matter from the outer wall of the cylinder sleeve, forming a roughness on the surface of the cylinder sleeve using a sandblasting machine, and spraying a sprayer having a thickness of 160 to 240 μm using a thermal sprayer. Through the step of forming the coating working layer has an excellent effect of adhesion and bonding force between the casting outer wall surface and the casting when forming the block casting.

또한, 실린더 슬리브 외벽에 형성된 밀착력과 결합력이 우수한 중간층으로 인하여 고온 열 팽창 수축과 피스톤 왕복 운동에 따른 슬리브의 흔들림이 없어 계면의 피로 현상을 줄이고, 엔진의 수명을 연장하고 경량의 엔진 블록을 형성하여 연비를 줄일 수 있는 효과과가 있다.In addition, due to the intermediate layer with excellent adhesion and bonding force formed on the outer wall of the cylinder sleeve, there is no sleeve fluctuation due to high temperature thermal expansion shrinkage and piston reciprocation, reducing fatigue at the interface, extending the life of the engine and forming a lightweight engine block. There is an effect to reduce fuel economy.

용사, 와이어, 슬리브, 알루미나, 블라스팅 Thermal spraying, wire, sleeve, alumina, blasting

Description

실린더 슬리브의 외벽 코팅 방법 {COATING METHOD OF CYLINDER SLEEVE }Outer Wall Coating Method of Cylinder Sleeve {COATING METHOD OF CYLINDER SLEEVE}

도 1은 본 발명의 실시예에 따른 실린더 슬리브의 외벽 코팅 방법의 흐름도1 is a flow chart of the outer wall coating method of the cylinder sleeve according to an embodiment of the present invention

도 2a는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 샌드 블라스팅 작업 측면도Figure 2a is a side view of the sandblasting operation of the outer wall coating method of the cylinder sleeve according to the present invention

도 2b는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 용사 작업의 측면도Figure 2b is a side view of the spray operation of the outer wall coating method of the cylinder sleeve according to the present invention

도 3a는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 샌드 블라스팅 작업 후 슬리브 단면도Figure 3a is a cross-sectional view of the sleeve after the sandblasting operation of the outer wall coating method of the cylinder sleeve according to the present invention

도 3b는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 용사 작업 후 슬리브 단면도Figure 3b is a cross-sectional view of the sleeve after the spraying operation of the outer wall coating method of the cylinder sleeve according to the present invention

<도면의 주요 부분에 대한 부호 설명><Description of the symbols for the main parts of the drawings>

10 : 슬리브 20 : 알루미나입자 10: sleeve 20: alumina particles

30 : 와이어 40 : 샌드블라스팅기 30: wire 40: sandblasting machine

50 : 용사기 60 : 샌드블라스팅작업층50: warrior 60: sandblasting layer

70: 용사코팅작업층70: spray coating layer

본 발명은 실린더 슬리브의 외벽 코팅 방법에 관한 것으로서, 더욱 세부적으로는 실린더 슬리브 외벽의 기름 및 이물질을 제거하는 단계와, 실린더 슬리브 표면을 샌드블라스팅기를 이용하여 조도를 형성하는 단계, 용사기를 이용하여 160 ~ 240㎛두께의 용사코팅작업층을 형성하는 단계를 거쳐 슬리브 외벽 표면과 블록 주조시 주조물과 슬리브 외벽 표면과의 밀착력 및 결합력이 우수한 효과가 있는 실린더 슬리브의 외벽 코팅 방법에 관한 것이다.The present invention relates to a method for coating an outer wall of a cylinder sleeve, and more particularly, to remove oil and foreign matter from the outer wall of the cylinder sleeve, to form a roughness on the surface of the cylinder sleeve using a sandblasting machine, and to use a thermal sprayer. Through a step of forming a spray coating layer of ~ 240㎛ thickness relates to the outer wall coating method of the cylinder sleeve having an excellent effect of adhesion and bonding force between the casting and the sleeve outer wall surface during the block casting and sleeve outer wall surface.

일반적으로 차량 엔진 본체의 기초가 되는 실린더 블록내부에는 연소가스와 윤활유의 누설 방지 및 엔진의 연소압력과 고온에서 피스톤 행정이 가능하도록 실린더 블록과 별개로 제작되는 실린더 슬리브가 설치되어 있다.In general, a cylinder sleeve, which is formed separately from the cylinder block, is installed inside the cylinder block, which is the basis of the vehicle engine body, to prevent leakage of combustion gas and lubricating oil and to allow piston stroke at combustion pressure and high temperature of the engine.

이러한 실린더 슬리브는 주철재의 실린더 블록과 일체형으로 형성되는 것과, 별도의 알루미늄 슬리브를 설치하는 2가지 방법이 사용되어 왔다.Such a cylinder sleeve is formed integrally with the cylinder block of cast iron, and two methods of installing a separate aluminum sleeve have been used.

그러나, 주철재 슬리브는 중량이 무거워 차량연비가 저하되었고, 이를 개선하기 위하여 알루미늄 슬리브를 사용하였다.
상기와 같은 알루미늄 슬리브는 금속 혹은 주철재 원형 슬리브외벽에 요철 또는 탭을 형성하고, 경량의 알루미늄 합금계열 주조물로 블록을 주조하였으나, 주조물의 금속 또는 주철재와 이형성분으로 주조 후 슬리브외벽에 코팅 밀착력이 떨어지는 문제점이 있었다.However, the cast iron sleeve is heavy, and the fuel economy of the vehicle is lowered, and an aluminum sleeve is used to improve this.
As described above, the aluminum sleeve is formed with irregularities or tabs on the outer wall of the metal or cast iron circular sleeve, and the block is cast using a lightweight aluminum alloy casting. There was a falling issue.

또한, 저하된 밀착력으로 인하여 고속/고열/진동에 의하여 실린더 슬리브의 고정 결합력이 떨어지고, 계면에 틈이 생기거나 흔들림이 발생하여 실린더 슬리브의 효과를 다하지 못하는 등의 문제점이 있었다.In addition, there is a problem that the fixed coupling force of the cylinder sleeve is lowered by high speed / high temperature / vibration due to the reduced adhesion, and there is a gap or shake occurs at the interface to not fulfill the effect of the cylinder sleeve.

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상술한 바와 같은 문제점을 해결하기 위하여, 본 발명에서는 실린더 슬리브 외벽에 실린더 블록 주조 재료와 동일 또는 유사한 금속, 산화물, 분말재료 혹은 와이어 재료를 이용하여 용사하여 실린더 슬리브 외벽에 중간층을 형성함으로써, 블록 주조시 주조물과 삽입한 슬리브의 외벽과의 밀착력이 우수한 효과가 있는 전기 아크 와이어 용사 방법으로 슬리브 외벽 표면을 개선한 실린더 슬리브의 외벽 코팅 증간층 형성 방법을 제공함을 그 목적으로 한다.In order to solve the problems as described above, in the present invention, by spraying using the same or similar metal, oxide, powder or wire material as the cylinder block casting material on the cylinder sleeve outer wall to form an intermediate layer on the cylinder sleeve outer wall, It is an object of the present invention to provide a method for forming an outer wall coating intermediate layer of a cylinder sleeve having improved sleeve outer wall surface by an electric arc wire spraying method having an excellent effect of adhesion between the casting and the outer wall of the inserted sleeve.

도 1은 본 발명의 실시예에 따른 실린더 슬리브의 외벽 코팅 방법의 흐름도이고, 도 2a는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 샌드 블라스팅 작업 측면도이고, 도 2b는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 용사 작업의 측면도이고, 도 3a는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 샌드 블라스팅 작업 후 슬리브 단면도이고, 도 3b는 본 발명에 따른 실린더 슬리브의 외벽 코팅 방법의 용사 작업 후 슬리브 단면도이다.1 is a flow chart of the outer wall coating method of the cylinder sleeve according to an embodiment of the present invention, Figure 2a is a sand blasting operation side view of the outer wall coating method of the cylinder sleeve according to the present invention, Figure 2b is a cylinder sleeve according to the present invention 3A is a cross-sectional view of a sleeve after the sandblasting operation of the outer wall coating method of the cylinder sleeve according to the present invention, and FIG. 3B is a sleeve after the spraying operation of the outer wall coating method of the cylinder sleeve according to the present invention. It is a cross section.

이하 본 발명의 구성요소를 첨부된 도면에 의거하여 살펴보면 다음과 같다.Hereinafter, the components of the present invention will be described with reference to the accompanying drawings.

본 발명은 실린더 슬리브(10) 외벽의 기름 및 이물질을 제거하는 단계(S10)와, 실린더 슬리브(10) 표면을 샌드블라스팅기(40)를 이용하여 조도를 형성하는 단계(S20)와, 용사기(50)를 이용하여 160 ~ 240㎛두께의 용사코팅작업층(70)을 형성하는 단계(S30)로 구성되는 것을 특징으로 한다.The present invention is to remove the oil and foreign substances on the outer wall of the cylinder sleeve 10 (S10), and to form the roughness using the sandblasting machine 40 on the surface of the cylinder sleeve 10 (S20) and the thermal sprayer It characterized in that it comprises a step (S30) to form a thermal spray coating working layer 70 of 160 ~ 240㎛ thickness using 50.

상기 샌드블라스팅 작업은 300~500rpm으로 회전하는 슬리브(10)에 6~7kg/㎠의 압력으로 알루미나입자(20)를 분사하여 샌드블라스팅작업층(60)을 형성하는것을 특징으로 한다.The sandblasting operation is characterized in that to form a sandblasting working layer 60 by spraying the alumina particles 20 at a pressure of 6 ~ 7kg / ㎠ to the sleeve 10 to rotate at 300 ~ 500rpm.

상기 알루미나입자(20)의 크기는 1000~2000㎛인 것을 특징으로 한다.The size of the alumina particles 20 is characterized in that 1000 ~ 2000㎛.

상기 전기 아크 와이어 용사방법에 사용된 와이어(30)는 지름이 1~2.5mm이고, 성분은 Si, Cu, Mg, Al, Fe, Mn, Zn이 함유된 Al합금계열인 것을 특징으로 한다.The wire 30 used in the electric arc wire spraying method has a diameter of 1 to 2.5 mm, and a component is an Al alloy series containing Si, Cu, Mg, Al, Fe, Mn, and Zn.

이상에서 설명한 바와 같이 본 고안의 작용 및 효과를 첨부된 도면에 의거하여 살펴보면 다음과 같다.As described above, the operation and effects of the present invention will be described with reference to the accompanying drawings.

도 1의 흐름도에 도시된 바와 같이, 슬리브(10) 표면에 전기 아크 와이어 용사 코팅을 하기 위하여 슬리브(10) 외벽의 기름 및 이물질을 제거하는 단계(S10)를 거친다.As shown in the flowchart of FIG. 1, in order to apply an electric arc wire spray coating on the surface of the sleeve 10, an oil and foreign material on the outer wall of the sleeve 10 is removed (S10).

이는 최초 가공되어 나온 슬리브(10)의 표면이 기름등으로 오염되어 있으면, 용사 후 표면에 입혀진 용사코팅작업층(70)이 기름으로 인하여 생성된 계면때문에 슬리브(10)와의 밀착력이 떨어져 벗겨지는 박리현상이 일어나게 된다.This is because if the surface of the sleeve 10 that has been processed for the first time is contaminated with oil or the like, the spray coating layer 70 coated on the surface after the thermal spraying is peeled off due to the adhesion between the sleeve 10 and the peeling off due to the interface created by the oil. The phenomenon occurs.

이를 방지하기 위하여 슬리브(10)를 가공전에 세척하여 코팅물질이 박리되는 것을 방지하는 효과가 있다.In order to prevent this, the sleeve 10 is washed before processing to prevent the coating material from peeling off.

두 번째 단계로서 실린더 슬리브(10) 표면을 샌드블라스팅기(40)를 이용하여 조도를 형성하는 단계(S20)는, 도 2a에 도시된 바와 같이, 고속으로 회전하는 슬리브(10)에 샌드블라스팅기(40)를 이용해 크기가 1000~2000㎛인 알루미나입자(20)를 분사하여 샌드블라스팅작업층(60)을 형성한다.As a second step, forming the roughness by using the sandblasting machine 40 on the surface of the cylinder sleeve 10 may be performed by using the sandblasting machine in the sleeve 10 that rotates at high speed, as shown in FIG. 2A. The sandblasting working layer 60 is formed by spraying the alumina particles 20 having a size of 1000 to 2000 μm using the 40.

이로 인하여 와이어(30)와 슬리브(10) 외벽 표면과의 결합력이 증대되고, 슬리브(10) 표면에 와이어(30)로 형성되는 용사코팅작업층(70)의 표면 조도가 높게 형성되고 밀착력과 결합력이 우수한 효과가 있다.As a result, the bonding force between the wire 30 and the outer wall surface of the sleeve 10 is increased, and the surface roughness of the thermal spray coating layer 70 formed of the wire 30 is formed on the sleeve 10 surface, and the adhesion and bonding force are high. This has an excellent effect.

여기서 알루미나입자(20)의 크기는 1700㎛인 것이 바람직하다.The size of the alumina particles 20 is preferably 1700㎛.

도 3a에 도시된 바와 같이, 알루미나입자(20)는 슬리브(10)의 외벽 표면에 분사되어 요철모양으로 형성된다.As shown in Figure 3a, the alumina particles 20 are sprayed on the outer wall surface of the sleeve 10 is formed in a concave-convex shape.

이어서 전기 아크 와이어 용사방법을 이용하여 슬리브 표면에 160~240㎛ 두께의 용사코팅작업층(70)을 형성한다(S30).Subsequently, a thermal spray coating working layer 70 having a thickness of 160 to 240 μm is formed on the sleeve surface using the electric arc wire spraying method (S30).

상기 용사코팅작업층(70)을 형성하는 와이어(30)의 성분은 Si, Cu, Mg, Al, Fe, Mn, Zn 등이 함유된 Al합금계열을 사용하여 샌드블라스팅작업층(60)과의 결합력을 향상시켰다.The components of the wire 30 forming the thermal spray coating working layer 70 may be formed using the Al alloy series containing Si, Cu, Mg, Al, Fe, Mn, Zn, etc., with the sandblasting working layer 60. The binding force was improved.

또한, 와이어(30)의 지름은 1~2.5mm까지 선택적으로 사용이 가능하나 1.6mm를 사용하는 것이 바람직하다.In addition, the diameter of the wire 30 can be selectively used up to 1 ~ 2.5mm, but preferably 1.6mm.

도 2b에 도시된 바와 같이, 샌드블라스팅 작업을 한 슬리브(10)를 300~500rpm으로 회전시키고, 용사기(50)는 회전하는 슬리브(10)와 101~152mm의 간격을 두고 설치한다.As shown in FIG. 2B, the sleeve 10 subjected to sand blasting operation is rotated at 300 to 500 rpm, and the thermal sprayer 50 is installed at intervals of 101 to 152 mm from the rotating sleeve 10.

이때 용사기(50) 내부에서 와이어(30)가 용해되면서 슬리브(10)의 외벽 표면으로 분사되어 용사코팅작업층(70)을 형성하며, 슬리브(10)의 회전 속도는 390rpm으로 하는것이 바람직하다. At this time, the wire 30 is dissolved in the sprayer 50 and sprayed onto the outer wall surface of the sleeve 10 to form a spray coating layer 70, and the rotational speed of the sleeve 10 is preferably set to 390 rpm. .

도 3b에 도시된 바와 같이, 용사가 완료된 후 슬리브(10)의 외벽 표면은 Si, Cu, Mg, Al, Fe, Mn, Zn 등이 함유된 Al합금계열 용사코팅작업층(70)이 슬리브(10) 외벽에 형성되어, 실린더 블록 주조시 삽입하는 주조물과 슬리브(10) 외벽과의 결합력 및 밀착력을 높이는 우수한 효과가 있다.As shown in FIG. 3B, after the spraying is completed, the outer wall surface of the sleeve 10 may include an Al alloy spray coating layer 70 containing Si, Cu, Mg, Al, Fe, Mn, Zn, or the like. 10) It is formed on the outer wall, there is an excellent effect of increasing the bonding force and adhesion between the casting and the insert inserted into the outer wall of the cylinder block casting.

이하에서, 본 발명을 실시예를 참조하여 더욱 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.

(실시예1)Example 1

최초 가공되어진 슬리브 표면에 기름등의 오염물질을 세척제를 이용하여 제거하였다.Oil and other contaminants were removed from the first processed sleeve surface using a cleaning agent.

전기 아크 와이어 용사시 슬리브와 용사물질의 밀착력을 높이기 위해서는, 슬리브 외벽에 적당한 조도를 생성해야 한다. 이를 위하여 샌드 블라스팅 작업을 하게 된다.In order to increase the adhesion between the sleeve and the thermal sprayed material during electric arc wire spraying, appropriate roughness must be generated on the outer wall of the sleeve. To do this, sandblasting is performed.

샌드 블라스팅 작업에 사용한 알루미나 입자의 크기는 1700㎛이고, 분사 압 력은 6~7kg/㎠로 샌드 블라스팅을 실시하여 슬리브 표면에 요철을 형성한다.The size of the alumina particles used in the sand blasting operation is 1700㎛, the spray pressure is sandblasted to 6 ~ 7kg / ㎠ to form irregularities on the sleeve surface.

보다 상세하게는 슬리브를 회전시킨 상태에서 알루미나 입자를 상/하로 4회 왕복하여 분사하고, 이때의 사용분사 압력은 6~7kg/㎠으로 블라스팅을 실시하여 표면조도를 향상시킨다.More specifically, the alumina particles are reciprocated and sprayed up and down four times while the sleeve is rotated, and the spraying pressure at this time is blasted at 6-7 kg / cm 2 to improve surface roughness.

이어서 슬리브를 390rpm으로 회전시킨 후, 규격은 Ø1.6mm이며 성분은 <표 1>의 Si, Cu, Mg, Al, Fe, Mn, Zn 등이 함유된 Al합금계열 와이어를 사용하여 전기 아크 와이어 용사를 실시한다.After rotating the sleeve at 390rpm, the specification is Ø1.6mm and the components are electric arc wire sprayed using Al alloy series wire containing Si, Cu, Mg, Al, Fe, Mn, Zn, etc. Is carried out.

<표 1> 와이어 성분의 질량 비.TABLE 1 Mass ratio of wire components.

Figure 112007038282734-pat00001
Figure 112007038282734-pat00001

코팅 장비는 Sulzer Metco 사의 전기 아크 와이어 용사 장비를 사용하여 슬리브의 상단에서 하부쪽으로 4회 왕복하여 코팅을 실시하였다.The coating equipment was coated with four round trips from top to bottom of the sleeve using Sulzer Metco's electric arc wire spray equipment.

<표 2> 전기 아크 와이어 장비 조건<Table 2> Electrical Arc Wire Equipment Conditions

Figure 112007038282734-pat00002
Figure 112007038282734-pat00002

전류는 150(A) 이하가 되면 와이어의 용융이 원활하지 않아 결합력이 떨어지고, 205(A) 이상이 되면 과다한 용융으로 용사 표면 조도가 약해져 본래의 목적을 달성하기 어렵다.When the current is 150 A or less, the melting of the wire is not smooth, and the bonding strength is lowered. When the current is 205 (A) or more, the spray surface roughness becomes weak due to excessive melting, making it difficult to achieve the original purpose.

따라서 <표 2>와 같이 적정 전류는 200(A)가 바람직하다.Therefore, as shown in Table 2, the proper current is preferably 200 (A).

상기와 같은 조건으로 전기 아크 와이어 용사를 실시한 후 단면을 검사한 결과, 슬리브의 표면에 106~240㎛의 조도가 높은 중간층이 형성되었음을 알 수 있었다.As a result of inspecting the cross section after the electric arc wire spraying under the above conditions, it was found that the intermediate layer having a high roughness of 106 to 240 μm was formed on the surface of the sleeve.

본 발명은 상기한 특징의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the preferred embodiments of the above features, and those skilled in the art to which the present invention pertains various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

상기한 바와 같이, 본 발명에 의한 실린더 슬리브의 외벽 코팅 방법 실린더 슬리브 외벽의 기름 및 이물질을 제거하는 단계와, 실린더 슬리브 표면을 샌드블라스팅기를 이용하여 조도를 형성하는 단계, 용사기를 이용하여 160 ~ 240㎛두께의 용사코팅작업층을 형성하는 단계를 거쳐 슬리브 외벽 표면과 블록 주조 형성시 주조물과의 밀착력과 결합력이 우수한 효과가 있다.As described above, the method for coating the outer wall of the cylinder sleeve according to the present invention removing oil and foreign matter from the outer wall of the cylinder sleeve, forming the roughness on the surface of the cylinder sleeve using a sandblasting machine, using a thermal sprayer 160 ~ 240 Through the step of forming the thermal spray coating layer of the thickness of ㎛ has an excellent effect of adhesion and bonding force between the casting outer wall surface and the casting when forming the block casting.

또한, 실린더 슬리브 외벽에 형성된 밀착력과 결합력이 우수한 중간층으로 인하여 고온 열 팽창 수축과 피스톤 왕복 운동에 따른 슬리브의 흔들림이 없어 계면의 피로 현상을 줄이고, 엔진의 수명을 연장하고 경량의 엔진 블록을 형성하여 연비를 줄일 수 있는 효과가 있다.In addition, due to the intermediate layer with excellent adhesion and bonding force formed on the outer wall of the cylinder sleeve, there is no sleeve fluctuation due to high temperature thermal expansion shrinkage and piston reciprocation, reducing fatigue at the interface, extending the life of the engine and forming a lightweight engine block. It has the effect of reducing fuel economy.

Claims (4)

삭제delete 실린더 슬리브(10) 외벽의 기름 및 이물질을 제거하는 단계(S10)와, 실린더 슬리브(10) 표면을 샌드블라스팅기(40)를 이용하여 조도를 형성하는 단계(S20)와, 용사기(50)를 이용하여 160 ~ 240㎛두께의 용사코팅작업층(70)을 형성하는 단계(S30)로 구성되는 전기 아크 와이어 용사 방법을 이용하여 실린더 슬리브의 외벽을 용사 코팅하는 방법에 있어서,Removing oil and foreign substances from the outer wall of the cylinder sleeve 10 (S10), forming a roughness using the sandblasting machine 40 on the surface of the cylinder sleeve 10 (S20), and the thermal sprayer 50 In the method of thermal spray coating the outer wall of the cylinder sleeve using an electric arc wire spraying method comprising the step (S30) of forming a thermal spray coating working layer 70 of 160 ~ 240㎛ thickness using, 상기 샌드블라스팅 작업은 300~500rpm으로 회전하는 슬리브(10)에 6~7kg/㎠의 압력으로 알루미나입자(20)를 분사하여 샌드블라스팅작업층(60)을 형성하는것을 특징으로 하는 실린더 슬리브의 외벽 코팅 방법. The sandblasting operation is the outer wall of the cylinder sleeve, characterized in that to form a sandblasting working layer 60 by spraying the alumina particles 20 at a pressure of 6 ~ 7kg / ㎠ to the sleeve 10 rotating at 300 ~ 500rpm Coating method. 제 2항에 있어서,The method of claim 2, 상기 알루미나입자의 크기는 1000~2000㎛인 것을 특징으로 하는 실린더 슬리브의 외벽 코팅 방법.The size of the alumina particles is the outer wall coating method of the cylinder sleeve, characterized in that 1000 ~ 2000㎛. 제 2항에 있어서,The method of claim 2, 상기 전기 아크 와이어 용사방법에 사용된 와이어(30)는 지름이 1~2.5mm이고, 성분은 Si, Cu, Mg, Al, Fe, Mn, Zn이 함유된 Al합금계열인 것을 특징으로 하는 실린더 슬리브의 외벽 코팅 방법.The wire 30 used in the electric arc wire spraying method has a diameter of 1 to 2.5 mm, and a component is a cylinder sleeve comprising an Al alloy series containing Si, Cu, Mg, Al, Fe, Mn, and Zn. Outer wall coating method.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08209321A (en) * 1995-02-07 1996-08-13 Suzuki Motor Corp Production of thermally sprayed coating
JP2005314732A (en) * 2004-04-28 2005-11-10 Densho Engineering Co Ltd Method for manufacturing deposition-preventive tool
KR20060029610A (en) * 2003-05-28 2006-04-06 다임러크라이슬러 아크티엔게젤샤프트 Cylinder liner, method for the production thereof and a combined

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08209321A (en) * 1995-02-07 1996-08-13 Suzuki Motor Corp Production of thermally sprayed coating
KR20060029610A (en) * 2003-05-28 2006-04-06 다임러크라이슬러 아크티엔게젤샤프트 Cylinder liner, method for the production thereof and a combined
JP2005314732A (en) * 2004-04-28 2005-11-10 Densho Engineering Co Ltd Method for manufacturing deposition-preventive tool

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