KR0131532B1 - Pump housing coated with polymer and method therefor - Google Patents

Pump housing coated with polymer and method therefor

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Publication number
KR0131532B1
KR0131532B1 KR1019940030018A KR19940030018A KR0131532B1 KR 0131532 B1 KR0131532 B1 KR 0131532B1 KR 1019940030018 A KR1019940030018 A KR 1019940030018A KR 19940030018 A KR19940030018 A KR 19940030018A KR 0131532 B1 KR0131532 B1 KR 0131532B1
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South Korea
Prior art keywords
layer
pump housing
coating
tar epoxy
polymer
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KR1019940030018A
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Korean (ko)
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KR960017913A (en
Inventor
최성수
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배순훈
대우전자주식회사
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Priority to KR1019940030018A priority Critical patent/KR0131532B1/en
Publication of KR960017913A publication Critical patent/KR960017913A/en
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Publication of KR0131532B1 publication Critical patent/KR0131532B1/en

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    • 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
    • C09D5/08—Anti-corrosive paints
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The inner rough surface(2) of the hot water circulating pump housing(1) made of cast iron is defatted by washing, dried, coated primarily with tar epoxy at room temperature for 7-8 hours, and coated secondarily with a siloxirane compound to form double-layered anticorrosive polymer wherein tar epoxy layer and siloxirane compound layer are 100um thick and 80-120um thick, respectively.

Description

티내부면에 폴리머(POLYMER) 방청 피막층이 코팅된 온수순환펌프하우징 및 그 방청 피막층을 코팅하는 방법Hot water circulation pump housing coated with polymer antirust film on inner surface of tee and method of coating the antirust film layer

제1도는 온수순환펌프하우징의 예시도.1 is an exemplary view of a hot water circulation pump housing.

제2도는 온수순환펌프하우징의 부분확대 단면도.2 is a partially enlarged cross-sectional view of the hot water circulation pump housing.

제3도 (a)(b)도는 본 발명에 따른 방청피막공정의 실시예시도.Figure 3 (a) (b) is an exemplary view of the antirust coating process according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 펌프하우징 2 : 내부면1: pump housing 2: inner surface

3 : 거칠면 4 : 타르에폭시층3: rough surface 4: tar epoxy layer

5 : 실록실렌층5: siloxane layer

본 발명은 온수순환펌프의 펌프하우징에 있어서 펌프하우징의 내부면에 방청피막을 형성하는 것과 그 방청피막층을 코팅하는 방법에 관한 것이다.The present invention relates to the formation of a rust preventive coating on the inner surface of the pump housing in the pump housing of the hot water circulation pump and a method of coating the rust preventive coating layer.

특히 방청피막층은 고부자물질인 수지계열의 폴리머(POLYMER)층을 이중으로 코팅한 것으로서 주철로된 펌프하우징의 부식을 방지하여 내식성을 향상시키고, 펌프의 수명을 연장시키며, 고르지 못한 내부면의 거칠면을 평활화시켜 유체가 보다 민활하게 운동할 수 있도록 하여 순환펌프의 효율을 증대시킬수 있도록 하는데 그 목적이 있다.In particular, the anti-rust coating layer is a double coating of the polymer-based polymer layer, which is a high-value material, to prevent corrosion of the pump housing made of cast iron, thereby improving corrosion resistance, extending the life of the pump, and uneven surface roughness. The purpose is to increase the efficiency of the circulation pump by smoothing the fluid so that the fluid can move more smoothly.

온수순환펌프는 유체 즉 보일러에 의해 뜨거워진 온수를 펌프하우징의 내부에서 임펠러에 의해 강제순환시켜주는 특성에 의해 그 펌프하우징을 고온과 강한 압력에 견딜 수 있도록 GC20이라는 주철을 사용하여 주물성형한다.Hot water circulation pump is cast by using cast iron called GC20 to withstand the high temperature and high pressure of the pump housing due to the characteristic that the hot water heated by the fluid, ie, boiler, is forcedly circulated by the impeller inside the pump housing.

따라서 주철로된 성형된 펌프하우징의 내부면은 주철제의 특성상 요철이 심한 거칠면으로 형성되어 매끄럽지 못한 상태를 유지하게 된다.Therefore, the inner surface of the molded pump housing made of cast iron is formed as a rough rough surface roughness due to the characteristics of cast iron to maintain a smooth state.

그러나 지금까지는 내부의 거칠면을 가공하거나 하는 특별한 조치없이 사용하고 있기 때문에 유체가 펌프하우징의 내부에서 순환될 때 그 거칠면에 의해 큰 저항을 받아 원활하게 순환되지 못할 뿐만아니라 고압력의 유체가 내부면을 마모시키기 때문에 녹이 발생하고 부식되는 등의 문제가 있다.However, until now, it is used without any special measures such as processing the internal rough surface, so when the fluid is circulated inside the pump housing, it is not easily circulated due to the large resistance by the rough surface, and the high pressure fluid wears the internal surface This causes problems such as rust and corrosion.

제1도는 통상적으로 사용하고 있는 온수순환펌프(도시하지 아니함)에 장착되어 사용되는 펌프하우징(1)을 보여주는 예시도이다.1 is an exemplary view showing a pump housing 1 used by being mounted on a hot water circulation pump (not shown) that is commonly used.

이와 같이된 펌프하우징(1)은 GC20의 주철을 사용하여 주조되기 때문에 내부면(2)을 포함한 전체의 면이 심한 거칠면(3)으로 형성되며, 따라서 내부면(2)은 고압, 고속으로 회전하는 유체에 의해 마모되고 녹이 발생함은 물론 부식되는 등의 문제가 있다는 것이다.Since the pump housing 1 as described above is cast using cast iron of GC20, the entire surface including the inner surface 2 is formed as a rough surface 3 so that the inner surface 2 rotates at high pressure and high speed. That is, there is a problem such as wear and rust caused by the fluid to corrode.

이와같은 문제를 다소해소할 수 있도록 하는 수단으로는 내부면(2)에 일반적인 도료 즉 페인트를 도장하고 있다. 그러나 페인트를 도장하더라도 고압, 고속으로 회전하는 유체에 의해 즉시 마모되고 벗겨져버려 별효과를 얻을 수 없다는 것이다.As a means to solve such a problem, the inner surface 2 is coated with a general paint, i.e., paint. However, even if the paint is applied, it will not wear out and peel off immediately due to the fluid rotating at high pressure and high speed.

즉, 제2도에 도시된 바와 같이 유체가 거칠면(3)에 도포된 페인트층을 강타하면서 순환하므로 충돌된 유체는 난무하게 되므로 거칠면(3)에 근접되는 유체는 큰 저항을 받게되어 펌핑능력 즉 순환펌프의 성능을 현저하게 저하시키게 된다.That is, as shown in FIG. 2, since the fluid circulates while sweeping the paint layer applied to the rough surface 3, the collided fluid becomes futile, so that the fluid close to the rough surface 3 is subjected to a large resistance and thus pumping ability. This significantly reduces the performance of the circulation pump.

뿐만아니라 고속고압으로 순환되는 유체가 거칠면(3)과 마찰하면서 강타하므로 도장된 페인트층이 쉽게 탈피되어버려 거칠면(3)에 녹이 발생하는 현상이 발생하는 것이다.In addition, since the fluid circulated at high pressure and high pressure rubs against the rough surface 3, the painted layer is easily peeled off, and rust occurs in the rough surface 3.

또한 녹이 발생하는 것과 같은 현상을 방지할수 있는 수단으로는 펌프하우징을 황동재질로 성형할 수 있으나 이 경우 개당 3000∼4000원 이상의 가격상승으로 인한 300∼400%의 가격상승율을 발생시키는 문제가 있으므로 경제적인 측면에서 거의 부적절하다는 것이다.In addition, as a means of preventing phenomena such as rust, the pump housing may be molded of brass material, but in this case, there is a problem of generating a price increase rate of 300 to 400% due to the price increase of 3000 to 4000 won per piece. It is almost inadequate.

본 발명은 상기 문제들을 해소하기 위한 것으로서 주철로 주조된 펌프하우징(1)에 있어서, 거칠면(3)으로된 내부면(2)에 타르에폭시층(4)과 실록실렌층(5)을 이중으로 코팅하여서된 것을 특징으로 하는 폴리머(POLYMER) 방청피막층이 코팅된 온수순환펌프 하우징이다.In the pump housing (1) cast of cast iron to solve the above problems, the tar epoxy layer (4) and the siloxane layer (5) are doubled on the inner surface (2) of the rough surface (3) Hot water circulating pump housing is coated with a polymer (POLYMER) rustproof coating layer characterized in that the coating.

본 발명은 상기와 같은 구조로 되어 있기 때문에 부식, 침식 및 녹이 발생을 근본적으로 해소하고 내부면이 평활화되어 유체의 순환을 양호하게 하여 순환펌프의 성능을 향상시킬수 있는 것이다.Since the present invention has the structure as described above, the corrosion, erosion and rust is essentially eliminated and the inner surface is smoothed to improve the circulation of the fluid to improve the performance of the circulation pump.

이하 본 발명을 첨부도면에 의거 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

제3도의 (a)(b)도는 본 발명에 따른 방청피막층의 코팅방법의 일실시예를 도시한 단면도이다.Figure 3 (a) (b) is a cross-sectional view showing an embodiment of the coating method of the antirust coating layer according to the present invention.

방청피막층인 타르에폭시층(4)과 실록실렌층(5)을 코팅하기전에 펄프하우징(1)의 내부면(2)을 깨끗하게 청소한후 탈지를 실시하여 건조한다.Before coating the tar epoxy layer 4 and the siloxane layer 5, which are antirust coating layers, the inner surface 2 of the pulp housing 1 is cleaned and then degreased and dried.

건조가 완료되면 내부면(2)에 고분자물질인 수지계열의 물질 차례로 코팅처리하여야 한다.When the drying is completed, the inner surface (2) should be coated in order of a polymer-based resin material.

먼저, 타르에폭시가 80∼120㎛이상의 타르에폭시층(4)으로 되도록 후막으로 코팅한다. 코팅하는 방법에 있어서는 붓으로 칠하는 방법과 스프레이분사법 그리고 침적(dipping)법이 있으나, 어떠한 방법에 의하여 코팅을 실시하여도 무방하다.First, it coats with a thick film so that a tar epoxy may become the tar epoxy layer 4 of 80-120 micrometers or more. The coating method includes a brush painting method, a spray spraying method and a dipping method, but the coating may be performed by any method.

일차적으로 타르에폭시층(4)의 코팅이 완료되면 상온에서 7∼8시간 건조를 한다.First, when the coating of the tar epoxy layer 4 is completed, the drying is carried out at room temperature for 7 to 8 hours.

이와같이 상온에서 장기간 건조시키는 것은 온수순환펌프를 통상적으로 사용하는 온도의 일치시켜 동일 유사한 조건을 유지시키기 위한 것이다.In this way, drying for a long time at room temperature is to maintain the same similar conditions by matching the temperature of the hot water circulation pump commonly used.

따라서, 상온 즉 건조온도에 있어서는 28∼34℃ 내외가 되도록 하는 것이 가장 바람직하며, 또한 이는 타르에폭시층(4)을 보다 밀접하고 견고하게 접착코팅시키는 가장 큰 효과를 얻을수 있기 때문이다.Therefore, at room temperature or drying temperature, it is most preferable to be about 28 to 34 ° C., and this is because the greatest effect of more closely and firmly bonding the tar epoxy layer 4 can be obtained.

타르에폭시층(4)을 코팅, 건조한후 실록실렌(siloxirane)콤파운드를 80∼120㎛의 두께로 코팅하는데 코팅방법에 있어서는 타르에폭시층(3)을 코팅하는 방법과 동일한 방법으로 실시한다.After coating and drying the tar epoxy layer 4, the siloxane (siloxirane) compound is coated to a thickness of 80 ~ 120㎛ in the coating method is carried out in the same manner as the method of coating the tar epoxy layer (3).

건조 역시 상온 즉 28∼34℃에서 11-13시간 정도 건조를 실시하면 코팅은 완료된다.Drying The coating is completed when the drying is carried out at room temperature, i.e., 28-34 ° C for 11-13 hours.

이와같이 실시되는 코팅방법은 내부면(2)의 거칠면(3)이 타르에폭시층(4, TAR EPOXY)에 의해 평활화되고 다시 그 위에 실록실렌층(5)이 코팅되어지므로 더욱 평활한 상태를 유지시킬수 있다.In the coating method performed in this way, the rough surface 3 of the inner surface 2 is smoothed by the tar epoxy layer 4 and TAR EPOXY and the siloxane layer 5 is coated thereon, thereby maintaining a smoother state. have.

다음의 실시예는 본 발명의 구체적인 설명을 나타낸 것이며, 그러나 본 발명은 실시예에 설명된 특정세부사항에 제한되지 않는다.The following examples illustrate specific details of the invention, but the invention is not limited to the specific details described in the examples.

[실시예]EXAMPLE

펌프하우징(1)의 내부면(2)을 깨끗이 한후 탈지를 하고 건조시킨다.Clean the inner surface (2) of the pump housing (1), then degrease and dry.

깨끗이 정화되고 건조된 펌프하우징(1)의 그 내부면(2)에 타르에폭시층를 코팅하되 100㎛두께의 타르에폭시층(4)을 형성하였다. 타르에폭시층(4)의 코팅을 완료한후 30℃의 상온에 7시간 노출시켜 완전히 건조시켰다. 타르에폭시층(4)이 완전건조된후 실록실렌(siloxirane) 콤파운드를 후막처리하여 100㎛두께의 실록실렌층(5)으로 코팅하였다.The tar epoxy layer was coated on the inner surface 2 of the clean and dried pump housing 1 to form a tar epoxy layer 4 having a thickness of 100 μm. After completing the coating of the tar epoxy layer (4) was exposed to room temperature of 30 ℃ for 7 hours to dry completely. After the tar epoxy layer 4 was completely dried, the siloxane (siloxirane) compound was thick-filmed and coated with a siloxane layer 5 having a thickness of 100 µm.

역시 30℃의 상온에 12시간 노출시켜 완전하게 건조시켜 줌으로써 내부면(2)이 고분자물질인 수지계열의 중합체로 이중으로 코팅된 온수순환펌프의 펌프하우징(1)을 얻었다.After 12 hours of exposure to room temperature at 30 ℃ completely dried to obtain a pump housing (1) of the hot water circulation pump coated with a resin-based polymer of the inner surface (2).

제3도의 (b)도에 도시된 바와 같은 구조를 형성하게 된다.A structure as shown in FIG. 3 (b) is formed.

따라서 본 발명에 따른 펌프하우징(1)은 내부면(2)의 거칠면(3)에 타르에폭시층(4)과 실록실렌층(5)이 이중으로 코팅되어 있으므로 고압, 고속의 유체가 순환하더라도 부식, 침식되거나 녹이 발생하는 현상이 근본적으로 제거되고, 특히 주철면과는 흡착력이 우수하고 유체의 타격에 대한 저항성 및 내마모성이 우수한 실록실렌을 코팅하여 주철의 내부면을 보호함으로서 펌프하우징의 수명을 연장시키고 성능의 향상을 기대할수 있는 것이다.Therefore, since the tar epoxy layer 4 and the siloxane layer 5 are double coated on the rough surface 3 of the inner surface 2 of the pump housing 1 according to the present invention, the pump housing 1 is corroded even when the high pressure and high speed fluid is circulated. Erosion or rust phenomenon is fundamentally eliminated, and in particular, it has a high adsorption power with cast iron surface, and it is coated with siloxane, which is resistant to the impact of fluid and wear resistance, to protect the inner surface of cast iron, thereby extending the life of pump housing. It can be expected to improve performance.

Claims (3)

주철로 주조된 펌프하우징(1)에 있어서, 거칠면(3)으로된 내부면(2)에 타르에폭시층(4)과 실록실렌층(5)을 이중으로 코팅하여서된 것을 특징으로 하는 폴리머(POLYMER)방청피막층이 코팅된 온수순환펌프 하우징.In the pump housing (1) cast from cast iron, a polymer (POLYMER) characterized by coating the tar epoxy layer (4) and the siloxane layer (5) on the inner surface (2) of the rough surface (3). Hot water circulation pump housing with anti-corrosion coating layer. 조철로 주조된 펌프하우징(1)에 있어서, 내부면(2)을 세척 탈지하여 건조한후 타르에폭시층(4)을 코팅하여 상온에서 7-8시간 건조시켜 일차코팅하고, 상기 타르에폭시층(4)의 위에 실록실렌층(5)을 이차 코팅하여 건조시켜서 된 것을 특징으로 하는 펌프하우징의 내부면에 폴리머(Polymer) 방청피막층을 코팅하는 방법.In the cast iron cast housing (1), the inner surface (2) is washed, degreased and dried, and then coated with a tar epoxy layer (4) and dried at room temperature for 7-8 hours, the primary coating, the tar epoxy layer (4) A method of coating a polymer rustproof coating layer on the inner surface of the pump housing, characterized in that the secondary coating of the siloxane layer (5) on the top) and dried. 제2항에 있어서, 타르에폭시층(4)과 실록실렌층(5)을 각각 100㎛이상의 두께로 코팅하는 것을 특징으로 하는 펌프하우징의 내부면에 폴리머(Polymer) 방청피막층을 코팅하는 방법.The method of claim 2, wherein the tar epoxy layer (4) and the siloxane layer (5) are each coated with a thickness of 100 µm or more.
KR1019940030018A 1994-11-16 1994-11-16 Pump housing coated with polymer and method therefor KR0131532B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102587423B1 (en) 2023-05-03 2023-10-13 태정인더스트리 주식회사 surface coating method for enhancing energy efficiency of pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102587423B1 (en) 2023-05-03 2023-10-13 태정인더스트리 주식회사 surface coating method for enhancing energy efficiency of pump

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