KR20080089932A - Composition for brazing for aluminium air-conditioning apparatus and method for brazing using the same - Google Patents

Composition for brazing for aluminium air-conditioning apparatus and method for brazing using the same Download PDF

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KR20080089932A
KR20080089932A KR1020070032729A KR20070032729A KR20080089932A KR 20080089932 A KR20080089932 A KR 20080089932A KR 1020070032729 A KR1020070032729 A KR 1020070032729A KR 20070032729 A KR20070032729 A KR 20070032729A KR 20080089932 A KR20080089932 A KR 20080089932A
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South Korea
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brazing
aluminum
composition
air conditioner
weight
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KR1020070032729A
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Korean (ko)
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KR100865119B1 (en
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신기철
박무규
송청운
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주식회사 제이씨
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Priority to CNA2008101092414A priority patent/CN101284337A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/012—Soldering with the use of hot gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/14—Heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

A brazing composition for an aluminum air-conditioning apparatus and a brazing method using the same are provided to reduce the manufacturing cost by omitting a process for coating a clad or attaching a clad sheet. A brazing method using a brazing composition comprises the steps of feeding the brazing composition into a reservoir(100) through a hopper(106), stirring the brazing composition using a stirrer(104) while giving predetermined pressure to the brazing composition, and coating the brazing composition on a header pipe and a tube by using a spray gun(108) while feeding air to the brazing composition. A surfactant is applied to a condenser before the coating process is performed to remove impurities from the condenser. Then, the brazing process is performed in a brazing furnace at an inert gas atmosphere.

Description

알루미늄 공조기기용 브레이징 조성물 및 브레이징 방법{Composition for Brazing for Aluminium Air-conditioning apparatus and Method for Brazing using the same}Composition for Brazing for Aluminum Air-conditioning apparatus and Method for Brazing using the same}

도 1은 알루미늄 공조기기의 콘덴서의 헤더 파이프(header pipe)와 튜브(tube)로 구성된 콘덴서를 개략적으로 나타내는 도면이다.1 is a view schematically showing a condenser composed of a header pipe and a tube of a condenser of an aluminum air conditioner.

도 2는 브레이징 조성물을 도포하기 위한 도포장치를 나타내는 구성도이다.2 is a block diagram showing a coating device for applying the brazing composition.

본 발명은 알루미늄 공조기기용 브레이징 조성물에 관한 것으로, 특히 클래드 코팅층이나 시트가 없는 알루미늄 공조기기 중 콘덴서나 오일 쿨러를 브레이징 할 수 있는 조성물에 관 한 것이다.The present invention relates to a brazing composition for an aluminum air conditioner, and more particularly, to a composition capable of brazing a condenser or an oil cooler in an aluminum air conditioner without a clad coating layer or a sheet.

본 발명은 또한 상기한 조성물을 이용한 브레이징 방법에 관한 것이다.The invention also relates to a brazing method using the composition described above.

차량에 장착되는 라디에이터, 콘덴서, 히터, 증발기, 오일 쿨러 또는 인터쿨러 등의 공조기기들을 그 특성상 알루미늄 소재를 주로 사용한다. 이러한 알루미늄 공조기기에 있어서 소재들 간의 접합은 매우 중요하다.Air conditioners such as radiators, condensers, heaters, evaporators, oil coolers, or intercoolers mounted on a vehicle mainly use aluminum materials. Bonding between materials is very important in this aluminum air conditioner.

도 1은 알루미늄 공조기기의 콘덴서의 헤더 파이프(header pipe)와 튜브(tube)로 구성된 콘덴서를 개략적으로 나타내는 도면이다.1 is a view schematically showing a condenser composed of a header pipe and a tube of a condenser of an aluminum air conditioner.

헤더 파이프(10)의 길이방향으로 따라 다수의 슬롯(미도시)이 형성되고, 각 슬롯에 튜브(20)가 끼워져 헤더 파이프(10)와 튜브(20)가 연통되며, 각 튜브(20) 사이에는 다수의 핀(30)이 설치된다. 이러한 구조에서, 헤더 파이프(10)와 튜브(20)가 연통되어 그 안을 냉매가 흐르기 때문에 이들 사이의 접합 부분은 특히 냉매가 누설되지 않도록 밀봉되어야 한다.A plurality of slots (not shown) are formed along the longitudinal direction of the header pipe 10, and a tube 20 is inserted into each slot so that the header pipe 10 and the tube 20 communicate with each other, and between each tube 20. There are a plurality of pins 30 are installed. In such a structure, since the header pipe 10 and the tube 20 communicate with each other and refrigerant flows therein, the joint portion therebetween must be sealed in particular so that the refrigerant does not leak.

이를 위해, 종래에는 알루미늄과 실리콘이 주성분인 40 계열의 클래드(clad), 소위 필러 메탈(filler metal)이 헤더 파이프 표면에 코팅된다. 또한, 이와 달리 알루미늄과 실리콘이 주성분인 40 계열의 클래드 시트를 헤더 파이프에 부착하기도 한다.To this end, conventionally, 40 series of clads, namely filler metals, in which aluminum and silicon are the main components, are coated on the header pipe surface. In addition, a cladding sheet of 40 series, which is composed mainly of aluminum and silicon, is also attached to the header pipe.

그러나, 전자의 경우, 클래드를 균일한 두께로 코팅해야 하기 때문에 특별한 기술이 필요하고, 이에 따라 제조비용이 증가하여 결과적으로 재료비가 비싸다는 문제점이 있다.However, in the former case, since the clad must be coated with a uniform thickness, a special technique is required, and thus there is a problem in that the manufacturing cost increases and, as a result, the material cost is high.

또한, 후자의 경우, 클래드 시트를 부착할 대상에 부합하도록 가공하고, 검사한 후 조립하는 공정이 필요하기 때문에 공정이 늘어나고 제조원가가 증가한다는 문제점이 있다.In addition, in the latter case, there is a problem in that the process is increased and the manufacturing cost is increased because a process of processing, inspecting, and assembling the clad sheet to be attached to it is required.

따라서, 본 발명은 이러한 종래기술의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 클래드 코팅층이나 클래드 시트가 없는 알루미늄 공조기기의 콘덴서 를 브레이징 할 수 있는 조성물을 제공하는 것이다.Accordingly, the present invention is to solve the problems of the prior art, an object of the present invention is to provide a composition capable of brazing a capacitor of an aluminum air conditioner without a clad coating layer or clad sheet.

본 발명의 다른 목적은 상기한 조성물을 이용하여 브레이징하는 방법을 제공하는 것이다.Another object of the present invention is to provide a method of brazing using the composition described above.

상기한 목적을 구현하기 위한 본 발명의 특징 및 이점은 이하에 서술되는 실시예로부터 명확하게 이해될 것이다.Features and advantages of the present invention for realizing the above objects will be clearly understood from the embodiments described below.

상기한 목적은, 알루미늄 모재의 표면에 형성된 산화 알루미늄 피막을 제거하는 알루미늄 브레이징 플럭스; 알루미늄과 실리콘을 주성분으로 하여 클래드 역할을 하는 알루미늄 파우더; 유동성을 향상시키는 불화 리튬; 및 상기 성분들을 혼합시 점착성을 갖게 하는 점착 바인더를 포함하는 알루미늄 공조기기의 콘덴서 브레이징 조성물에 의해 달성된다.The above object is, aluminum brazing flux for removing the aluminum oxide film formed on the surface of the aluminum base material; Aluminum powder having a role of cladding based on aluminum and silicon; Lithium fluoride to improve flowability; And it is achieved by the condenser brazing composition of the aluminum air conditioner comprising a pressure-sensitive adhesive binder that makes the components tacky upon mixing.

바람직하게, 상기 알루미늄 브레이징 플럭스는 5 내지 50중량%, 상기 알루미늄 파우더는 5 내지 70중량%, 상기 불화 리튬은 0.01 내지 5중량% 및 상기 점착 바인더는 5 내지 50중량% 함유된다.Preferably, the aluminum brazing flux is 5 to 50% by weight, the aluminum powder is 5 to 70% by weight, the lithium fluoride is contained 0.01 to 5% by weight and the adhesive binder is contained 5 to 50% by weight.

또한, 상기한 목적은, 브레이징 하고자 하는 알루미늄 공조기기에 청구항 1의 브레이징 조성물을 도포하는 단계; 상기 도포가 완료된 후, 100℃ 내지 300℃ 의 온도 범위에서 건조하는 단계; 및 상기 건조된 알루미늄 공조기기를 브레이징로(brazing furnace)에서 불활성 분위기 조건으로 구간별로 온도를 상승시켜 브레이징을 실시하는 단계를 포함하는 브레이징 방법에 의해 달성된다.In addition, the above object, the step of applying the brazing composition of claim 1 to the aluminum air conditioner to be brazed; After the application is complete, drying in a temperature range of 100 ℃ to 300 ℃; And brazing the dried aluminum air conditioner by raising the temperature for each section in an inert atmosphere condition in a brazing furnace.

바람직하게, 상기 브레이징 조성물의 도포 전, 상기 알루미늄 공조기기에 계 면 활성제를 도포하여 표면에 부착된 이물질 성분을 제거할 수 있다.Preferably, before the application of the brazing composition, it is possible to remove the foreign matter component attached to the surface by applying a surfactant to the aluminum air conditioner.

이하, 첨부된 도면을 참조하여 본 발명의 일 실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

본 발명에 따른 브레이징 조성물은 클래드 코팅층이 형성되어 있지 않거나, 클래드 시트가 부착되어 있지 않은 공조기기의 콘덴서의 헤더 파이프와 튜브 부위에 적용되며, 그 외 콘덴서의 브라켓, 리시버, 캡, 플랜지 등에도 적용할 수 있다.The brazing composition according to the present invention is applied to the header pipe and tube portion of the condenser of an air conditioner, in which no clad coating layer is formed or the clad sheet is not attached, and other brackets, receivers, caps, and flanges of the condenser are also applied. can do.

본 발명에 따른 브레이징 조성물은 알루미늄 브레이징 플럭스, 알루미늄 파우더, 불화 리튬(LiF), 점착 바인더를 함유한다.The brazing composition according to the present invention contains aluminum brazing flux, aluminum powder, lithium fluoride (LiF), adhesive binder.

알루미늄 브레이징 플럭스는 알루미늄 모재의 표면에 형성된 산화 알루미늄(Al2O3) 피막을 제거하는 역할을 하며, 바람직하게 5 내지 50중량%가 포함된다. 상기 범위를 벗어나 지나치게 적을 경우에는 브레이징 성능이 저하하고, 지나치게 많을 경우에는 잔사(잉여물)가 과다하게 생성된다.The aluminum brazing flux serves to remove the aluminum oxide (Al 2 O 3 ) film formed on the surface of the aluminum base material, preferably 5 to 50% by weight. If too little out of the above range, the brazing performance is lowered, and if too large, residues (excess) are excessively generated.

알루미늄 브레이징 플럭스로는, 가령 불산(HF)에 수산화알루미늄[Al(OH)3]을 가하여 반응시킨 산성용액 조건하에서 수산화칼륨(KOH)과 탄산칼륨(K2CO3) 중 어느 하나를 가하여 중화 반응하여 제조된 불화 알루미늄 칼륨이 사용될 수 있다. As the aluminum brazing flux, neutralization reaction is carried out by adding either potassium hydroxide (KOH) or potassium carbonate (K 2 CO 3 ) under acidic solution condition, for example, by adding aluminum hydroxide [Al (OH) 3 ] to hydrofluoric acid (HF). Aluminum potassium fluoride prepared by the above can be used.

알루미늄 파우더는 알루미늄과 실리콘이 주성분으로 된 40 계열로서, 조성물에 함유되어 클래드 역할을 하며, 바람직하게 5 내지 70중량%가 포함된다. Aluminum powder is a 40 series of aluminum and silicon as a main component, it is contained in the composition to act as a clad, and preferably contains 5 to 70% by weight.

불화 리튬은 조성물의 유동성을 향상시키는 역할을 하며, 바람직하게 0.01 내지 5중량%가 포함된다. 지나치게 적을 경우에는 유동성이 저하되어 브레이징이 균일하지 않을 수 있으며, 지나치게 많으면 잔사가 과다하게 생성된다.Lithium fluoride serves to improve the fluidity of the composition, and preferably contains 0.01 to 5% by weight. If the amount is too small, the fluidity may be lowered so that the brazing may not be uniform. If the amount is too large, the residue is excessively generated.

점착 바인더는 알루미늄 브레이징 플럭스, 불화 리튬, 알루미늄 파우더를 혼합시 점착성을 갖게 하여 알루미늄 공조기기의 대상 부품에 도포가 용이하도록 하며, 바람직하게 5 내지 50중량%가 포함된다.The pressure-sensitive adhesive binder is adhesive when the aluminum brazing flux, lithium fluoride, and aluminum powder are mixed to facilitate application to the target parts of the aluminum air conditioner, and preferably 5 to 50% by weight.

이와 같이 구성된 브레이징 조성물을 클래드 코팅층이 형성되어 있지 않거나, 클래드 시트가 부착되어 있지 않은 알루미늄 공조기기의 콘덴서에 도포하여 브레이징 한다.The brazing composition thus constructed is applied to the condenser of the aluminum air conditioner in which the clad coating layer is not formed or the clad sheet is not attached to the brazing composition.

도 2는 브레이징 조성물을 도포하기 위한 도포장치를 나타내는 구성도이다.2 is a block diagram showing a coating device for applying the brazing composition.

도 2를 참조하면, 저장조(100)에 호퍼(106)를 통하여 본 발명의 브레이징 조성물을 투입하고 교반기(104)를 이용하여 교반하면서 일정한 압력을 가하여 적정 압력을 유지시킨다. 도면부호 102는 압력계이다.Referring to FIG. 2, the brazing composition of the present invention is introduced into the reservoir 100 through the hopper 106, and a constant pressure is applied while stirring using the stirrer 104 to maintain a proper pressure. Reference numeral 102 is a pressure gauge.

브레이징 하고자 하는 알루미늄 공조기기의 콘덴서의 헤더 파이프(10)와 튜브(20) 부위에 브레이징 조성물을 도포하는데, 상기한 바와 같이, 적정 압력으로 유지된 브레이징 조성물을 에어를 공급하여 사출 건(108)으로부터 해당 부품에 도포한다.The brazing composition is applied to the header pipe 10 and the tube 20 of the condenser of the aluminum air conditioner to be brazed. As described above, the brazing composition maintained at the proper pressure is supplied from the injection gun 108. Apply to the part.

바람직하게, 도포 전에 콘덴서의 해당 부위에 계면 활성제를 도포하여 해당 부위에 부착된 이물질 성분을 제거할 수 있다.Preferably, the surfactant may be applied to the corresponding site of the condenser before application to remove foreign matter components attached to the corresponding site.

도포가 완료되면, 약 100℃ 내지 300℃의 온도 범위에서 건조시키고, 건조 공정을 거친 후에는 브레이징 공정으로 이송된다.When the application is complete, it is dried in the temperature range of about 100 ℃ to 300 ℃, and after the drying process is transferred to the brazing process.

브레이징 공정에서 해당 부품은 브레이징로(brazing furnace)에서 불활성 분위기, 가령 질소 분위기 조건으로 하여 300℃로부터 구간별로 온도를 상승시켜 640 ℃ 이하의 온도 범위에서 브레이징을 실시한다.In the brazing process, the part is brazed in a temperature range of 640 ° C. or lower by raising the temperature from 300 ° C. to a section in a brazing furnace under an inert atmosphere, such as a nitrogen atmosphere.

이와 같이, 상기한 바와 같이, 클래드 코팅층이 형성되지 않고 클래드 시트가 부착되지 않은 헤더 파이프와 튜브 부위에 적용하더라도 본 발명에 따른 브레이징 조성물을 이용하여 브레이징함으로써 상호 밀봉 접합하여 가령 그 내부에 흐르는 냉매가 누설되는 것을 확실하게 방지할 수 있다.Thus, as described above, even if applied to the header pipe and tube portion where the clad coating layer is not formed and the clad sheet is not attached to each other by brazing by using the brazing composition according to the present invention, the refrigerant flowing therein It is possible to reliably prevent leakage.

이러한 헤더 파이프와 튜브의 접합은 알루미늄 공조기기 중 콘덴서에 한정되는 것은 아니며, 오일 쿨러 등을 포함하는 알루미늄 공조기기에 적용되는 부품의 접합에 이용될 수 있다.The joining of the header pipe and the tube is not limited to the condenser in the aluminum air conditioner, and may be used to join the parts applied to the aluminum air conditioner including an oil cooler.

이상에서는 본 발명의 바람직한 실시예를 중심으로 설명하였지만, 당업자의 수준에서 다양한 변경과 변형을 가할 수 있으며, 이러한 변경과 변형은 본 발명의 범주를 벗어나지 않는 한, 본 발명에 속하는 것으로 해석되어야 한다.Although the above has been described with reference to the preferred embodiments of the present invention, various changes and modifications can be made at the level of those skilled in the art, and such changes and modifications should be construed as belonging to the present invention without departing from the scope of the present invention.

이상에서 설명한 바와 같이, 본 발명에 따르면 클래드 코팅층이나 클래드 시트가 없는 알루미늄 공조기기 중 콘덴서와 오일 쿨러 등을 브레이징 할 수 있어, 알루미늄 공조기기 중 콘덴서와 오일 쿨러 등은 클래드를 균일한 두께로 코팅하거나 클래드 시트를 부착할 필요가 없어 제조비용이 감소하고 결과적으로 재료비가 저렴하다는 이점이 있다.As described above, according to the present invention, the condenser and the oil cooler of the aluminum air conditioner without the clad coating layer or the clad sheet can be brazed. There is no need to attach the clad sheet, thus reducing the manufacturing cost and consequently the material cost is low.

Claims (4)

알루미늄 모재의 표면에 형성된 산화 알루미늄 피막을 제거하는 알루미늄 브레이징 플럭스;An aluminum brazing flux for removing an aluminum oxide film formed on the surface of an aluminum base material; 알루미늄과 실리콘을 주성분으로 하여 클래드 역할을 하는 알루미늄 파우더;Aluminum powder having a role of cladding based on aluminum and silicon; 유동성을 향상시키는 불화 리튬; 및Lithium fluoride to improve flowability; And 상기 성분들을 혼합시 점착성을 갖게 하는 점착 바인더를 포함하는 것을 특징으로 하는 알루미늄 공조기기용 브레이징 조성물.Brazing composition for an aluminum air conditioner, characterized in that it comprises an adhesive binder for making the components tacky when mixing. 청구항 1에 있어서,The method according to claim 1, 상기 알루미늄 브레이징 플럭스는 5 내지 50중량%, 상기 알루미늄 파우더는 5 내지 70중량%, 상기 불화 리튬은 0.01 내지 5중량% 및 상기 점착 바인더는 5 내지 50중량% 함유된 것을 특징으로 하는 알루미늄 공조기기용 브레이징 조성물.The aluminum brazing flux is 5 to 50% by weight, the aluminum powder is 5 to 70% by weight, the lithium fluoride is 0.01 to 5% by weight and the adhesive binder 5 to 50% by weight brazing for the aluminum air conditioner Composition. 브레이징 하고자 하는 알루미늄 공조기기에 청구항 1의 브레이징 조성물을 도포하는 단계;Applying the brazing composition of claim 1 to an aluminum air conditioner to be brazed; 상기 도포가 완료된 후, 100℃ 내지 300℃의 온도 범위에서 건조하는 단계; 및After the application is complete, drying in a temperature range of 100 ℃ to 300 ℃; And 상기 건조된 알루미늄 공조기기를 브레이징로(brazing furnace)에서 불활성 분위기 조건으로 하여 300℃로부터 구간별로 온도를 상승시켜 640℃ 이하의 온도 범위에서 브레이징을 실시하는 단계를 포함하는 것을 특징으로 하는 알루미늄 공조기기의 브레이징 방법.Aluminum air conditioning apparatus comprising the step of performing the brazing in the temperature range of less than 640 ℃ by raising the temperature of the dried aluminum air conditioner in a brazing furnace (in brazing furnace) in an inert atmosphere condition by section temperature from 300 ℃ Brazing method. 청구항 3에 있어서,The method according to claim 3, 상기 브레이징 조성물의 도포 전, 상기 알루미늄 공조기기에 계면 활성제를 도포하여 표면에 부착된 이물질 성분을 제거하는 단계를 추가로 포함하는 것을 특징으로 하는 알루미늄 공조기기의 브레이징 방법.Before applying the brazing composition, applying a surfactant to the aluminum air conditioner to remove the foreign matter component attached to the surface further comprising the brazing method of the aluminum air conditioner.
KR1020070032729A 2007-04-03 2007-04-03 Composition for Brazing for Aluminium Air-conditioning apparatus and Method for Brazing using the same KR100865119B1 (en)

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US9056363B2 (en) 2008-11-25 2015-06-16 Solvay Fluor Gmbh Anticorrosive flux
US9579752B2 (en) 2010-02-10 2017-02-28 Solvay Fluor Gmbh Flux forming an insoluble brazing residue
KR102237180B1 (en) * 2020-05-12 2021-04-07 그린테크주식회사 composition for brazing of aluminum heat exchanger

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US11504814B2 (en) 2011-04-25 2022-11-22 Holtec International Air cooled condenser and related methods
WO2014089072A2 (en) * 2012-12-03 2014-06-12 Holtec International, Inc. Brazing compositions and uses thereof
EP3225351B1 (en) * 2016-03-30 2020-05-06 General Electric Company Brazing compositions for ductile braze structures, and related processes and devices
KR102001066B1 (en) 2017-09-23 2019-07-17 이동열 Brazing sheet manufacturing method for use in air conditioning or refrigeration system by ultrasonic welding and brazing sheet using of the same

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KR20010001755A (en) * 1999-06-08 2001-01-05 한운택 Brazing Flux Of Non-Clad Agent Aluminum Member And Process For Preparing Thereof
KR100518787B1 (en) * 2003-05-16 2005-10-06 주식회사 제이씨 Flux composition for brazing Al-Mg alloy and Brazing method using the same

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Publication number Priority date Publication date Assignee Title
US9056363B2 (en) 2008-11-25 2015-06-16 Solvay Fluor Gmbh Anticorrosive flux
US9579752B2 (en) 2010-02-10 2017-02-28 Solvay Fluor Gmbh Flux forming an insoluble brazing residue
KR102237180B1 (en) * 2020-05-12 2021-04-07 그린테크주식회사 composition for brazing of aluminum heat exchanger

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