KR19980046190U - Spraying device of steel pipe for farm - Google Patents
Spraying device of steel pipe for farm Download PDFInfo
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- KR19980046190U KR19980046190U KR2019960059334U KR19960059334U KR19980046190U KR 19980046190 U KR19980046190 U KR 19980046190U KR 2019960059334 U KR2019960059334 U KR 2019960059334U KR 19960059334 U KR19960059334 U KR 19960059334U KR 19980046190 U KR19980046190 U KR 19980046190U
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- steel pipe
- spraying
- sprayed
- fixed support
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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
- C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
- C23C4/16—Wires; Tubes
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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
- C23C4/123—Spraying molten metal
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- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
본 고안은 비닐하우스 등에 사용되는 농원용 강관에 관한 것으로, 더욱 상세하게는 농원용 강관의 제조시 전기 저항 용접후 발생되는 비이드(Bead)를 제거할 때에 발생되는 강관에 피막된 층이 비이드와 같이 탈락되는 부분을 방식(防蝕)처리하는 농원용 강관의 용사장치에 관한 것으로, 상기 고정 지지대(16)의 하부측에 설치된 이동용 슬라이딩장치(8)와, 상기 슬라이딩장치(8)가 설치된 고정 지지대(16)를 고정시키는 전후거리 간격 조절장치(11)와, 상기 고정지지대(16)에 강관(7)의 표면에 용사를 골고루 분사하기 위해 좌우측에 가이드부재(19a),(19b)를 갖는 각도조절장치(20a),(20b)를 형성하고, 상기 좌우측 가이드부재(19a),(19b)에 형성된 좌측용사기(18a)와 우측용사기(18b)를 각각 설치하고, 상기 와이어 공급장치(12a),(12b)가 설치된 좌우측 용사기(18a),(18b)에 Zn과 Al 와이어를 공급하여, 상기 각도조절장치(20a),(20b)와 높낮이 조절장치(10)를 이용하여 위치이동을 시키면서 강관(7)에 고르게 용사시켜 이중으로 피막층을 형성할 뿐만 아니라, 작업효율을 높일 수 있는 특징이 있다.The present invention relates to a farm steel pipe used in a plastic house, and more particularly, in the manufacture of a farm steel pipe, the layer coated on the steel pipe generated when removing the beads generated after electric resistance welding bead It relates to a thermal spraying device of a steel pipe for farms for anti-corrosion treatment, such as the part that is removed, the fixed sliding support (8) installed on the lower side of the fixed support (16), the fixed fixed to the sliding device (8) Front and rear distance adjusting device 11 for fixing the support 16, and the guide member (19a, 19b) on the left and right to evenly spray the sprayed on the surface of the steel pipe (7) to the fixed support (16) The angle adjusting devices 20a and 20b are formed, and the left spraying machine 18a and the right spraying machine 18b formed on the left and right guide members 19a and 19b are respectively installed, and the wire supply device ( Zn and the left and right spraying machines 18a and 18b provided with 12a) and 12b) By supplying Al wire, using the angle adjusting device (20a), (20b) and the height adjusting device 10 to move the position evenly sprayed on the steel pipe (7) to form a double layer, as well as work efficiency There is a feature to increase.
Description
본 고안은 비닐하우스 등에 사용되는 농원용 강관을 관한 것으로, 더욱 상세하게는 농원용 강관의 제조시 전기 저항 용접후 발생되는 비이드(Bead)를 제거할 때에 발생되는 강관에 피막된 층이 비이드와 같이 탈락되는 부분을 방식(防蝕)처리하는 농원용 강관의 용사장치에 관한 것이다.The present invention relates to a farm steel pipe used in a plastic house, and more particularly, the layer coated on the steel pipe generated when removing the beads generated after electrical resistance welding in the manufacture of the farm steel pipe bead It relates to a thermal spraying device of a steel pipe for farms that are anti-corrosion treatment.
일반적으로 비닐하우스용에 사용되는 강관을 제조함에 있어서, 판재를 이용하여 강관(파이프)을 만들기 위해서는, 판재를 말아서 맞닿는 면과 면을 부착하기 위해 전기 저항 용접법을 많이 사용하여 오고 있다.In general, in manufacturing a steel pipe used for a plastic house, in order to make a steel pipe (pipe) using a plate, a lot of electric resistance welding methods have been used to attach the surface and the surface to which the board is rolled.
그러나 강관을 제조하기 위하여 전기 저항 용접법을 사용함에 발생되는 것으로 용접된 부위에 비이드(Bead)가 생성되므로 인해 강관에 형성된 비이드를 제거하여야 한다.However, the beads generated in the welded part are generated by using the electric resistance welding method to manufacture the steel pipe, so the beads formed in the steel pipe should be removed.
상기 강관을 제조시 전기 저항 용접후에 생성된 비이드를 제거시 강관의 표면에 피막된 부위가 비이드와 같이 탈락된 부분(소지철:素地鐵)으로 인해 부식을 방지하기 위하여 탈락된 부위를 메워주어야 했었다.When manufacturing the steel pipe to remove the beads generated after the electrical resistance welding, the portion coated on the surface of the steel pipe to fill the dropped portion to prevent corrosion due to the portion (falling iron: 素 地鐵) that fell off like beads. Had to give.
그래서 종래 농원용 강관의 비이드 제거시 발생된 소지철의 부분을 메워주는 용사장치는, 도 1 에 도시된 바와 같이, 몸체를 이루는 지지대(4)가 하부측은 고정되어 있고, 상기 지지대(4)에 높낮이 조절장치(2)에 의해 이송가능하게 설치된 토출구(5)를 갖는 용사기(熔射機)(6)를 사용하여 왔었다.Thus, the thermal spray filling the portion of the base iron generated during the bead removal of the conventional steel pipe for farming, as shown in Figure 1, the support 4 constituting the body is fixed to the lower side, the support 4 The spraying machine 6 which has the discharge port 5 provided so that the conveyance was possible by the height adjusting apparatus 2 has been used.
상기와 같은 종래의 용사장치는, 강관의 제조시 전기 저항 용접시에 발생된 비이드를 제거후 소지철 부분을 코팅하기 위하여 강관(7)을 이송시키면서 용사기(6)의 토출구(5)를 통하여 용사재료로 Zn 또는 Al 와이어 중 한 종류인 단일 성분만을 사용하여 용사시켜 도포하여 왔었다.The conventional thermal spraying apparatus as described above, removes the beads generated during the electrical resistance welding during the manufacture of the steel pipe, and then the discharge port 5 of the thermal sprayer 6 is transported while the steel pipe 7 is transported to coat the base iron portion. It has been applied by spraying using only a single component of one kind of Zn or Al wire as a thermal spraying material.
그러나 강관에 단일 성분으로 이루어진 Zn 또는 Al을 재료로 용사된 용사층중 Zn의 용사피막의 경우 미세한 노출부 주변의 Zn이 희생방식으로 소모되어 노출부가 더욱 더 확대되어 빠르게 적청이 발생되는 것으로 나타나 있으며, 상기 Al을 재료한 용사층의 경우 소지철의 노출부위가 매우 크고 희생방식능력이 Zn 보다 떨어지므로 초기 적청의 발생이 부분적으로 매우 빠르게 진행되는 문제점이 크게 대두되고 있다.However, in the thermal sprayed layer of Zn or Al composed of a single component in the steel pipe, Zn is sprayed by the sacrificial method around the minute exposed part, and the exposed part is further enlarged to rapidly generate red blue. In the case of the Al-sprayed layer, since the exposed portion of the base iron is very large and the sacrificial anticorrosion ability is lower than Zn, the problem of the early red-blue occurrence occurring at a very high speed is increasing.
또한 종래의 용사장치는 고정형으로 다양한 용사재료의 사용이나 용사되는 각도를 임의로 제어할 수 없는 것으로, 즉 환언하면 용사기의 용사기와 용접부간의 거리 조정 및 용사각도제어와 전방과 후방으로의 위치 이동을 하지 못하기 때문에 골고루 농원용 강관의 소지철부분에 용사되는 부위가 한정적인 문제점이 있었다.In addition, the conventional thermal spraying device is fixed and cannot control the use of various thermal spray materials or the spraying angle arbitrarily. In other words, the distance between the thermal spraying machine and the welded part of the thermal sprayer is controlled, the spray angle is controlled, and the front and rear positions are moved. Because it can not evenly sprayed on the iron part of the farm steel pipe had a limited problem.
또한 용사조직의 형성은 먼저 용사재료를 약 600∼750℃의 고온가스로 용융시킨다음 용융된 피복재료를 고속비행시켜 피착물에 투착시키는 것으로, 용사방법과 용사재료에 따라 매우 다양한 조직을 가진다.In addition, the formation of the thermal spraying structure first melts the thermal spraying material with a high temperature gas of about 600 to 750 ° C, and then deposits the molten coating material at high speed to deposit the deposited material.
상기 조직상의 특성으로는 미세한 기공조직을 가지는 동시에 부도막 상태가 존재하며, 피막은 산화물이 게재된 상태로 거친면을 형성하고 있어, 조성과 물리적인 성질은 용사되기 전과 달라진다는 것뿐만 아니라, 잔유응력도 존재하기 때문에, 이러한 특성중 용사층의 미세한 기공과 부도막층에 의해 내식성을 크게 저하시키는 문제가 있었다.As a characteristic of the structure, it has a microporous structure and a non-coating state, and the film forms a rough surface with an oxide posted therein, and the composition and physical properties are different from those before spraying, as well as Since stress also exists, there existed a problem which the corrosion resistance greatly fell by the micropore of a thermal spraying layer, and a non-coat layer among these characteristics.
또한, 용사의 부착량은 농원용 강판의 모재부에 비해 대단히 적기 때문에 내식성에 있어서 큰 차이를 나타내기 때문에 농원용 강관의 수명에 결정적인 영향을 미치는 요소로 작용되어 왔었다.In addition, since the deposition amount of the thermal spraying is very small compared to the base metal part of the steel sheet for farming, it shows a large difference in corrosion resistance, and thus has been a factor that has a decisive effect on the life of the steel pipe for farming.
따라서, 본 고안은 상기와 같은 문제점을 감안하여 창안된 것으로, 본 고안의 목적은 농원용 강관에 용사위치를 고저와 전후로 자유롭게 이동시킬 수 있고, 또한 Zn 과 Al의 용사재를 이용하여 복합조직을 형성하므로 내식성과 부착량을 증가시킬 수 있는 농원용 강관의 용사장치를 제공함에 있다.Therefore, the present invention was devised in view of the above problems, and an object of the present invention is to freely move the spraying position up and down on the steel pipe for farming, and also to use the thermal spray material of Zn and Al to form a composite structure. It is to provide a hot spray value of the steel pipe for farming, which can increase the corrosion resistance and adhesion amount.
도 1 은 종래의 용사장치를 나타내는 도면.BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the conventional thermal spraying value.
도 2 는 본 고안의 용사장치의 작동을 나타내는 도면.2 is a view showing the operation of the thermal spraying apparatus of the present invention.
도 3 은 본 고안의 용사장치의 측면을 나타내는 도면.Figure 3 is a view showing the side of the thermal spraying apparatus of the present invention.
도 4 는 본 고안의 시험예를 나타내는 도면.4 is a view showing a test example of the present invention.
도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings
8: 슬라이딩장치 12a,12b: 와이어 공급장치8: sliding device 12a, 12b: wire feeder
16: 고정 지지대 17a,17b: 토출구16: fixed support 17a, 17b: discharge port
18a,18b: 용사기 20a,20b: 각도조절장치18a, 18b: spraying machine 20a, 20b: angle adjusting device
상술한 목적을 달성하기 위하여, 본 고안의 농원용 강관의 용사장치는, 상기 고정 지지대의 하부측에 설치된 이동용 슬라이딩장치와, 상기 슬라이딩장치가 설치된 고정 지지대를 고정시키는 전후거리 간격 조절장치와, 상기 고정지지대에 강관의 표면에 용사를 골고루 분사하기 위해 좌우측에 가이드부재를 갖는 각도조절장치를 각각 형성하고, 상기 좌우측 가이드부재에 좌측 용사기와 우측 용사기를 설치하고, 상기 좌우측용사기에 각각 와이어를 공급하는 와이어 공급장치로 구성된 것이 특징이다.In order to achieve the above object, the thermal spraying device of the plant steel pipe of the present invention, the movable sliding device installed on the lower side of the fixed support, the front and rear distance interval adjusting device for fixing the fixed support provided with the sliding device, and In order to evenly spray the sprayed steel on the surface of the fixed support, an angle adjusting device having guide members on the left and right sides is formed, respectively, a left sprayer and a right sprayer are installed on the left and right guide members, and wires are respectively supplied to the left and right sprayers. It is characterized by consisting of a wire supply device.
상기와 같이 구성된 본 고안의 농원용 강관의 용사장치를 첨부된 도면에 의거하여 상세하게 설명한다.On the basis of the accompanying drawings, the thermal spraying of the steel pipe for farms of the present invention configured as described above will be described in detail.
도 2 는 본 고안의 작동상태를 나타내는 도면이고, 도 3 은 본 고안의 용사장치의 측면도를 나타내는 도면이고, 도 4 는 본 고안의 시험예를 나타내는 도면이다.2 is a view showing an operating state of the present invention, Figure 3 is a view showing a side view of the thermal spraying apparatus of the present invention, Figure 4 is a view showing a test example of the present invention.
고정지지대(16)의 하부측에 슬라이장치(8)와 전후 거리조절장치(11)를 구비하고 있어 강관(7)의 이송속도에 따라 고정지지대(16)에 설치되어 있는 좌우측 용사기(18a),(18b)를 강관(7)의 속도에 따라 슬라이딩장치(8)에 의해 이동되고, 미세하게 위치를 조절할 수 있는 전후 거리조절장치(11)를 이용하여 거리조정후 고정시킬수도 있다.On the lower side of the fixed support 16 is provided with a slice device 8 and the front and rear distance adjusting device 11, the left and right spraying machines 18a installed on the fixed support 16 according to the feed rate of the steel pipe 7. (18b) may be fixed after the distance adjustment by using the front and rear distance adjusting device (11) which is moved by the sliding device (8) according to the speed of the steel pipe (7) and finely adjusts the position.
또한 좌우측 용사기(18a)(18b)에 공급되는 강관의 높낮이를 조절하기 위해 높낮이 조절장치(10)가 설치되어 있을뿐만 아니라, 용사되는 거리를 조절하여 온도의 변화를 주므로 용사되는 재료의 특성을 살릴 수 있다.In addition, the height adjusting device 10 is installed to adjust the height of the steel pipes supplied to the left and right sprayers 18a and 18b, and the temperature of the sprayed material is controlled to change the temperature, thereby controlling the characteristics of the sprayed material. Can save
상기 고정지지대(16)에 설치된 각도조절장치(20a),(20b)에 각각 용사 토출구(17a),(17b)를 갖는 좌측 용사기(18a)와 우측 용사기(18b)가 설치되어 있어 강관(7)의 이송에 따라 각도를 변경하면서 강관의 표면에 피막층을 형성하는 Zn과 Al을 용사시킨다.The left spraying machine 18a and the right spraying machine 18b having the spray ejection openings 17a and 17b are installed in the angle adjusting devices 20a and 20b installed in the fixed support 16, respectively. Spray the Zn and Al to form the coating layer on the surface of the steel pipe while changing the angle according to the transfer of 7).
상기 좌우측 용사기(18a),(18b)는, 고정지지대(16)의 사이에 설치되어 있는 각도조절장치(20a),(20b)의 타원 형상의 좌우측 가이드부재(19a),(19b)에 형성된 라인을 따라 안내되므로, 강관(7)에 용사 위치를 용사면에서 45°∼ 90°까지 자유롭게 움직일 수 있게 구성되어 있다.The left and right spraying machines 18a and 18b are formed in the elliptical left and right guide members 19a and 19b of the angle adjusting devices 20a and 20b provided between the fixed supports 16. Since it is guided along a line, the steel pipe 7 is comprised so that a spraying position can be freely moved to 45 degrees-90 degrees from a sprayed surface.
상기 좌우측 용사기(18a),(18b)에서 용융된 용사재가 토출구(17a),(17b)를 통하여 강관(7)의 표면에 충돌되는 순간의 에너지와 용사재의 부착시 온도변화를 각도조절장치(20a),(20b)를 이용하여 용사조직을 변화시키므로 용사의 내식성을 향상시킨다.The temperature control at the time of attachment of the thermal sprayed material and the energy at the moment when the thermal sprayed material melted in the left and right sprayer (18a, 18b) hit the surface of the steel pipe (7) through the discharge port (17a), (17b) 20a), (20b) is used to change the thermal spray tissue, thereby improving the corrosion resistance of the thermal spray.
상기 본 고안의 용사장치는, 각도조절장치(20a),(20b)에 설치된 좌우측 용사기(18a),(18b)를 사용하는 것으로, 좌측 용사기(18a)에는 와이어 공급장치(12a)(12b)를 이용하여 Zn 와이어를 공급하고, 또다른 한 대의 우측 용사기(18b)에는 와이어 공급장치(12b)를 이용하여 Al 와이어를 공급하여 각 토출구(17a),(17b)를 통하여 용융된 Al과 Zn을 재료로한 용사를 강관(7)에 분사시켜 피막시킨다.The thermal spraying device of the present invention uses the left and right spraying machines 18a, 18b provided in the angle adjusting devices 20a, 20b, and the wire spraying devices 12a, 12b are used for the left spraying machine 18a. Zn wires are supplied to the Nr, and Al is supplied to the other right thermal sprayer 18b by using a wire supply device 12b, and Al melted through each of the outlets 17a and 17b. A spray made of Zn is sprayed onto the steel pipe 7 to form a film.
상기 본 고안의 용사장치를 이용하여 강관에 이중 용사하는 방법으로는, Zn 과 Al을 동시에 용사지점 또는 일정한 거리를 두고 용사시키므로, Zn과 Al이 혼재된 층 또는 Zn과 Al이 이중층을 이루는 피막층을 가지는 것으로, 더욱 바람직하게는 상기 Zn을 강관(7)에 용사시킨 후, 그 다음에 Al을 Zn이 피막된 위에 용사하면 내식성을 높임과 동시에 용사의 부착량을 증가시킬 수 있다.In the method of double spraying on a steel pipe using the thermal spraying solution of the present invention, Zn and Al are sprayed at a spraying point or at a certain distance at the same time, so that a mixed layer of Zn and Al or a layer of Zn and Al forms a double layer. More preferably, after the Zn is thermally sprayed on the steel pipe 7, then Al is sprayed on the Zn-coated film to increase the corrosion resistance and increase the deposition amount of the thermal spraying.
상기 Zn 과 Al 와이어를 좌우측 용사기(18a),(18b)에 공급하여 각 토출구(17a),(17b)를 통하여 강관(7)에 동시에 동일지점 또는 일정한 거리를 두고 용사시키게 되면 강관(7)의 표면에 치밀한 조직의 피막층을 형성할 뿐만아니라, 두재료가 혼재되어 복합조직을 형성하는 것으로, 먼저 우측 용사기(18b)의 토출구(17b)에서 용사되는 Zn 의 용사층에서 미코팅된 부분이 발생될 경우에는 다른 Al의 용사를 갖는 좌측 용사기(18a)에서 또 한 번의 용사를 시켜 피막층을 형성하므로, 미코팅된 부분은 Al의 용사로 피막층 이루므로 완전하게 강관(7)의 소지철 부분을 피막시킬 수 있다.When the Zn and Al wires are supplied to the left and right sprayers 18a and 18b and sprayed at the same point or at a predetermined distance to the steel pipes 7 through the discharge holes 17a and 17b at the same time, the steel pipes 7 In addition to forming a dense coating layer on the surface of the film, the two materials are mixed to form a composite structure. First, an uncoated portion of the Zn thermal sprayed layer is sprayed at the discharge port 17b of the right thermal sprayer 18b. When it is generated, another thermal spraying is performed on the left spraying machine 18a having another thermal spraying Al to form a coating layer. Therefore, the uncoated portion forms a coating layer with the thermal spraying of Al so that the iron part of the steel pipe 7 is completely formed. Can be coated.
그리고 상기 본 고안의 용사장치를 이용하여 종래의 단일 용사재료로 사용한 피막층과 본 고안의 Zn과 Al 피막을 사용할 경우 차이점을 알기 위해 실험한 데이터를 아래와 같이 설명한다.And using the thermal spray of the present invention will be described in the experimental data to see the difference when using the coating layer used as a conventional single spraying material and the Zn and Al coating of the present invention as follows.
A: 용접위치A: welding position
B: 비이드 제거점B: Bead Removal Point
C,D,E: 용사위치,D(현재 강관의 생산시 용사 위치)C, D, E: Spraying position, D (The spraying position in the production of current steel pipe)
Zn/,Al/: 용사기를 각도변경하여 용사함,Zn /, Al /: Spray the sprayer by changing the angle,
f,g: 파이프와 60도의 각도로 설치되어 있는 용사기 위치로 강관의 피용사체에 투착되기전에 물리적인 혼합상태로 한 후 D 지점에 용사함.( 도 5 에 도시함)f, g: Sprayed at point D after physically mixed state before being deposited on the object of the steel pipe at the sprayer position installed at an angle of 60 degrees with the pipe (shown in FIG. 5).
상기와 같은 시험조건하에서 시험한 결과를 아래와 같이 표2∼표4 에 나타내었다.The results of the test under the above test conditions are shown in Tables 2 to 4 as follows.
상기의 표 1과 같은 조건하에서 용사의 부착량을 측정한 결과로는 종래와 같이 단일종으로 코팅한 Zn/과, 상기 Zn을 용사한 후, 그 위에 Al을 용사시킨 것이 것이 4∼6㎛ 로 부착량이 가장 많은 것을 알 수 있다.As a result of measuring the deposition amount of the thermal spray under the conditions as shown in Table 1, Zn / coated with a single species as in the prior art, and after the Zn was sprayed, Al was sprayed on the deposition amount of 4 ~ 6㎛ You can see this most.
표 1 에 나타내 바와 같은 시험편을 같고 염수 분무를 시험한 결과로는, 단일종으로 용사시킨 것과, Zn과 Al을 혼합한 것은 강관의 표면에 초기 적청이 빠르게 나타는 반면에, Al과 Zn을 각각 용사시킨 것은 거의 50일이 지나서야 초기 적청이 발생되었다.As a result of testing the salt spray test with the same specimen as shown in Table 1, the single-sprayed and the mixture of Zn and Al showed a rapid initial red blue color on the surface of the steel pipe, whereas Al and Zn were respectively Nearly 50 days after the spraying, the initial red blue color occurred.
또한 용사하는 순서를, Zn을 먼저 강관에 표면에 용사한 후, 그 다음에 Al을 용사시켜 강관에 피막층을 형성한 것에서는 60일이 되서야 초기 적청이 발생되었다.In the order of thermal spraying, Zn was first sprayed on the surface of the steel pipe, and then Al was sprayed to form a coating layer on the steel pipe.
또한 상기의 표 1 과 같이 제조된 시험편을 습기가 많은 습윤상태에서 시험한 결과로, 강관에 단일종으로 용사시킨 것과, Zn과 Al을 혼합한 것으로 강관의 표면에 초기 적청이 30일 이전에 빠르게 나타나는 반면에 Al과 Zn을 각각 용사시킨 것은 거의 80일이 지나서야 초기 적청이 발생되었다.In addition, as a result of the test specimen prepared as shown in Table 1 in a wet state of high humidity, as a single species sprayed on the steel pipe, Zn and Al mixed by the initial red blue on the surface of the steel pipe 30 days earlier On the other hand, the thermal spraying of Al and Zn separately did not occur until 80 days later.
또한 강관에 Zn을 먼저 용사한 후, 그 다음에 Al을 용사시켜 강관에 피막층을 형성한 것에서는 100일 이상이 되서야 초기 적청이 발생되었다.In addition, when Zn was first sprayed on the steel pipe and then Al was sprayed to form a coating layer on the steel pipe, the initial red blue color was not generated until 100 days or more.
상기와 같이 표1∼표4 에 나타난 결과와 같이 강관의 소지철 부분에 단일종의 용사재를 사용한 것보다, 두가지의 용사재료를 사용하는 것이 좋으며, 더 바람직하게는 강판의 표면에 Zn을 먼저 용사한 후, Al을 그 다음에 용사하는 것이 가장 바람직한 것으로 나타나 있다.As shown in Table 1 to Table 4 above, it is better to use two types of thermal spraying materials than to use a single type of thermal spraying material on the base iron portion of the steel pipe, and more preferably, Zn is first sprayed on the surface of the steel sheet. After that, it is shown that spraying Al next is most preferable.
상기와 같이 2대의 용사기를 이용하여, Zn 과 Al의 용사를 이중층 또는 혼재된 복합 조직을 강관의 표면에 형성하기 때문에, 소지철의 노출이 적어 용사층이 부식환경으로 부터의 차단되는 부분이 많아지고, 부분적으로 조금 노출된 부분은 아연의 희생방식으로 초기 발청을 억제함과 동시에 알루미늄의 강한 내식성이 더 이상 발청 확산하지 않게 방지되므로, 농원용 비닐하우스와 같이 고온다습하고 각종 화학 약품으로 인한 강한 부식 환경에서 내부식성이 월등하게 뛰어난 효과를 얻을 뿐만 아니라, 2대의 용사기를 이용하여 용사하므로 작업속도가 빠르게 진행되어 작업효율을 높일 수 있는 특징이 있다.As above, two sprays are used to form a double layer or a mixed composite structure on the surface of the steel pipe by forming a thermal spray of Zn and Al on the surface of the steel pipe, so that the exposed portion of iron is less exposed, and the spray layer is blocked from the corrosive environment. The partially exposed part is suppressed at the same time as the sacrificial method of zinc and at the same time, the strong corrosion resistance of aluminum is no longer prevented from spreading and spreading. In addition to the excellent corrosion resistance in the corrosive environment, as well as the thermal spraying using two sprayers, the work speed is fast progressed, there is a feature that can increase the work efficiency.
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| KR2019960059334U KR200146337Y1 (en) | 1996-12-27 | 1996-12-27 | Spraying device of steel pipe for farm |
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| KR2019960059334U KR200146337Y1 (en) | 1996-12-27 | 1996-12-27 | Spraying device of steel pipe for farm |
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| KR19980046190U true KR19980046190U (en) | 1998-09-25 |
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| KR100707673B1 (en) * | 2005-12-16 | 2007-04-13 | 두산중공업 주식회사 | Thermal spraying device to maintain uniform film thickness of piping |
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| KR100707673B1 (en) * | 2005-12-16 | 2007-04-13 | 두산중공업 주식회사 | Thermal spraying device to maintain uniform film thickness of piping |
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