KR100801700B1 - Packing materials for flux composition for brazing aluminium - Google Patents

Packing materials for flux composition for brazing aluminium Download PDF

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Publication number
KR100801700B1
KR100801700B1 KR1020060121338A KR20060121338A KR100801700B1 KR 100801700 B1 KR100801700 B1 KR 100801700B1 KR 1020060121338 A KR1020060121338 A KR 1020060121338A KR 20060121338 A KR20060121338 A KR 20060121338A KR 100801700 B1 KR100801700 B1 KR 100801700B1
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aluminum
flux
polyvinyl alcohol
brazing
water
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KR1020060121338A
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Korean (ko)
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신기철
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주식회사 제이씨
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • 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
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys

Abstract

A packing material of an aluminum brazing flux is provided to prevent workers from inhaling the potassium aluminum fluoride and to restrain the pollution of the surrounding environment and the air by preventing the dust of the flux from being scattered in the air. A packing material of an aluminum brazing flux is made of polyvinyl alcohol vinyl capable of being easily melted in the water. The packing material contains the dried and crushed potassium aluminum fluoride brazing flux. The aluminum brazing flux is potassium aluminum fluoride. The thickness of the polyvinyl alcohol vinyl is 0.05~2mm. The polyvinyl alcohol vinyl is dissolved in the water for 1~20 minutes in consideration of work efficiency and packing reliability by properly setting the thickness.

Description

알루미늄 브레이징용 플럭스의 포장재{Packing materials for flux Composition for brazing aluminium}Packing materials for flux composition for brazing aluminum}

본 발명은 알루미늄 브레이징용 플럭스의 포장재에 관한 것으로, 특히 현장 브레이징 공정에서 알루미늄 브레이징용 플럭스에 의한 분진 발생을 최소화한 기술에 관련한다. The present invention relates to a packaging material for fluxes for aluminum brazing, and more particularly to a technique for minimizing dust generation by flux for aluminum brazing in a field brazing process.

차량에 장착되는 라디에이터, 콘덴서, 히터, 증발기, 오일쿨러 또는 인터쿨러 등의 공조기기들을 그 특성상 알루미늄 소재를 주로 사용한다. 알루미늄 소재 표면에는 산화 피막이 형성되어 있는데, 이 산화 피막을 제거하기 위해서 알루미늄 브레이징용 불화물계 플럭스를 사용한다.Air conditioners such as radiators, condensers, heaters, evaporators, oil coolers or intercoolers mounted on a vehicle are mainly made of aluminum. An oxide film is formed on the surface of the aluminum material. In order to remove the oxide film, a fluoride flux for aluminum brazing is used.

구체적으로, 공조기기들을 브레이징할 때, 알루미늄 용융제인 불화알루미늄칼륨의 플럭스를 사용하여 브레이징로에서 브레이징 온도를 640℃ 이하로 하여 브레이징하게 된다.Specifically, when brazing air conditioners, the brazing temperature is brazed at a brazing temperature of 640 ° C. or less in a brazing furnace using a flux of aluminum aluminum fluoride, which is an aluminum melt.

통상 알루미늄 브레이징용 플럭스는 반응공정 -> 탈수공정 -> 파쇄공정 -> 건조공정 -> 분쇄공정 -> 포장공정을 거쳐 제품을 생산한다. 이와 같이 제조되는 종래의 건조형 알루미늄 브레이징용 플럭스는 그 제조공정 중에 건조공정을 포함하고 있기 때문에 건조에 의해 통상 함수율이 2% 이하로 된다.Generally, aluminum brazing flux is produced through reaction process-> dehydration process-> crushing process-> drying process-> crushing process-> packaging process. The conventional dry aluminum brazing flux manufactured as described above includes a drying step in the manufacturing process, so that the water content is usually 2% or less by drying.

종래의 건조형 알루미늄 브레이징용 플럭스는 비수용성 폴리에틸렌(polyethylene) 비닐을 사용하여 포장되며, 포장된 알루미늄 브레이징용 플럭스를 현장 브레이징 공정 중에 사용하기 위해서는 알루미늄 브레이징용 플럭스를 포장한 포장재를 뜯어 내부에 담은 알루미늄 브레이징용 플럭스를 물과 혼합한다.Conventional dry aluminum brazing flux is packaged using water-insoluble polyethylene vinyl, and in order to use the packaged aluminum brazing flux during the field brazing process, the aluminum packaging containing the aluminum brazing flux is removed from the package. The brazing flux is mixed with water.

이 과정에서 건조한 알루미늄 브레이징용 플럭스로부터 분진이 발생하여 작업자가 흡입함으로써 작업자의 건강에 악영향을 끼치며, 또한 주변환경과 공기를 오염시킨다는 문제점이 있다.In this process, dust is generated from the dry aluminum brazing flux, and the worker inhales, adversely affecting the health of the worker and also contaminating the surrounding environment and air.

따라서, 본 발명의 목적은 현장 브레이징 공정 중 알루미늄 브레이징용 플럭스를 물과 혼합하는 과정에서 분진의 발생을 최소화하는 것이다.Accordingly, it is an object of the present invention to minimize the generation of dust in the process of mixing the aluminum brazing flux with water during the field brazing process.

본 발명의 다른 목적과 특징 및 이점은 이하에 서술되는 실시예를 통하여 명확하게 이해될 것이다.Other objects, features and advantages of the present invention will be apparent from the embodiments described below.

상기한 목적은 폴리비닐알코올(polyvinyl alcohol) 비닐로 이루어져서 건조 파쇄된 알루미늄 브레이징용 플럭스를 내부에 수용하는 알루미늄 브레이징용 플럭스의 포장재에 의해 달성된다.The above object is achieved by a packaging material of aluminum brazing flux which is made of polyvinyl alcohol vinyl and accommodates the dry crushed aluminum brazing flux therein.

이러한 구성에 의하면, 현장 브레이징 공정 중 알루미늄 브레이지용 플럭스를 물과 혼합하는 과정에서 분진의 발생을 최소화할 수 있어 작업자의 건강에 악영 향을 끼치지 않고, 또한 주변환경이나 공기를 오염시키지 않으며, 각종설비나 장비에 영향을 미치지 않는다.According to this configuration, it is possible to minimize the generation of dust in the process of mixing the aluminum braze flux with water during the field brazing process, does not adversely affect the health of workers, and does not pollute the surrounding environment or air, It does not affect the equipment or equipment.

상기 알루미늄 브레이징용 플럭스는 불화알루미늄칼륨일 수 있다.The flux for aluminum brazing may be potassium aluminum fluoride.

바람직하게, 상기 폴리비닐알코올 비닐의 두께는 0.05mm 내지 2mm일 수 있다.Preferably, the thickness of the polyvinyl alcohol vinyl may be 0.05mm to 2mm.

이러한 구성에 의하면, 작업효율과 포장의 신뢰성을 고려하여 용해시간을 대략 1 내지 20분 사이로 조정할 수 있다.According to this configuration, the dissolution time can be adjusted between about 1 to 20 minutes in consideration of the work efficiency and the reliability of the packaging.

이하, 본 발명의 일 실시예를 상세하게 설명한다.Hereinafter, an embodiment of the present invention will be described in detail.

본 발명에 따른 불화알루미늄칼륨(KAlF4와 K2AlF5·H2O) 플럭스는 다음의 과정을 거쳐 제조한다.Potassium aluminum fluoride (KAlF 4 and K 2 AlF 5 · H 2 O) flux according to the present invention is prepared through the following process.

불산(HF)에 수산화알루미늄[Al(OH)3]을 가하여 반응시킨 산성용액 조건하에서 수산화칼륨(KOH)과 탄산칼륨(K2CO3) 중 어느 하나를 가하여 중화 반응시켜서 K : Al : F = 1 ~ 1.5 : 1 : 4 ~ 4.5의 몰 비가 되도록 제조한다. 이를 위해, 해당량을 반응조에서 교반기로 교반시키면서, 60 내지 90℃ 온도에서 50 내지 100분간 반응시킨다.Under acidic solution condition of adding aluminum hydroxide [Al (OH) 3 ] to hydrofluoric acid (HF), neutralization reaction was performed by adding either potassium hydroxide (KOH) or potassium carbonate (K 2 CO 3 ) to K: Al: F = It is prepared to have a molar ratio of 1 to 1.5: 1: 4 to 4.5. To this end, the corresponding amount is reacted with a stirrer in a reaction tank while reacting at a temperature of 60 to 90 ° C. for 50 to 100 minutes.

이어, 탈수기에서 탈수하여 고체와 액체를 분리시키고, 분리된 고체를 파쇄기에서 파쇄한 후, 건조 및 분쇄 공정을 거쳐 제품으로 포장한다. Subsequently, the solid and the liquid are separated by dehydration in a dehydrator, the separated solid is crushed in a crusher, and then packaged into a product through a drying and grinding process.

본 발명에 따르면, 포장 과정에서 포장재로 폴리비닐알코올(polyvinyl alcohol) 비닐이 사용된다. 가령, 건조 분쇄된 불화알루미늄칼륨 플럭스는 0.5 내지 30킬로그램 단위로 포장될 수 있다.According to the present invention, polyvinyl alcohol vinyl is used as the packaging material in the packaging process. For example, the dry pulverized potassium aluminum fluoride flux may be packed in units of 0.5 to 30 kilograms.

폴리비닐알코올 비닐의 물에 용해시 분자구조는 다음과 같다.The molecular structure of polyvinyl alcohol when dissolved in water is as follows.

Figure 112006089730669-pat00001
Figure 112006089730669-pat00001

폴리비닐알코올 비닐은 물에 대한 친화성이 큰 수산기(-OH)를 갖고 있으므로 극성 용매인 물에 잘 녹는다. 이는 폴리비닐알코올 비닐의 분자구조 중 수산기가 극성을 띄고 있기 때문이다. 따라서 수산기를 갖는 극성 용매인 물에 잘 녹게 된다. 즉, 폴리비닐알코올 비닐이 극성 용질이고 물은 극성 용매이기 때문에 폴리비닐알코올 비닐은 물에 잘 녹게 된다.Polyvinyl alcohol Vinyl has a hydroxyl group (-OH) having a high affinity for water, so it is soluble in water, a polar solvent. This is because hydroxyl groups are polar in the molecular structure of polyvinyl alcohol vinyl. Therefore, it is soluble in water, which is a polar solvent having a hydroxyl group. That is, since polyvinyl alcohol vinyl is a polar solute and water is a polar solvent, polyvinyl alcohol vinyl is well soluble in water.

이와 같이 폴리비닐 알코올 비닐은 물에 용해되는 수용성이기 때문에 현장 브레이징 공정 중 불화알루미늄칼륨 플럭스를 물과 혼합할 때 포장재로부터 불화알루미늄칼륨 플럭스를 꺼낼 필요없이 불화알루미늄칼륨 플럭스를 내부에 담은 포장재 자체를 물에 넣어 혼합할 수 있다.Since polyvinyl alcohol vinyl is water soluble in water, the packaging material itself containing the potassium fluoride flux inside the water without mixing the potassium fluoride flux from the packaging material when mixing the potassium aluminum fluoride flux with water during the field brazing process. Can be mixed in.

이러한 구성에 의하면, 불화알루미늄칼륨 플럭스의 분진이 대기에 흩어질 가능성이 거의 없기 때문에 작업자가 불화알루미늄칼륨 플럭스를 흡입하여 건강을 해치거나 공기를 오염시키는 일을 최소화할 수 있다.According to this configuration, since the dust of the potassium aluminum fluoride flux is hardly scattered in the atmosphere, the worker can minimize the inhalation of the health by inhaling the potassium fluoride flux or contaminating the air.

또한, 폴리비닐 알코올 비닐은 고분자 화합물로 물에 용해된 후, 브레이징 공정에 의해 알루미늄 공조기기에 플럭스가 부착되어 떨어지지 않도록 하는 접착 특성을 가지며, 일부 계면활성 기능을 구비하여 알루미늄 공조기기의 표면장력을 감소시켜 불화알루미늄칼륨 플럭스를 알루미늄 공조기기의 표면에 균일하게 도포시키는 효과를 갖는다.In addition, polyvinyl alcohol vinyl is a high molecular compound and has an adhesive property to prevent the flux from adhering to the aluminum air conditioner by brazing process, and has a surface active function to improve the surface tension of the aluminum air conditioner It has the effect of uniformly applying the aluminum fluoride potassium flux to the surface of the aluminum air conditioner.

본 발명에 적용되는 폴리비닐 알코올 비닐은, 예를 들어, 0.05mm 내지 2mm의 두께를 가질 수 있으며, 이는 결과적으로 폴리비닐 알코올 비닐이 물에 의해 용해되는 시간과 관련한다. 따라서, 폴리비닐 알코올 비닐의 두께를 적절하게 설정함으로써 알루미늄 브레이지용 플럭스를 물과 혼합하는 과정에서의 작업효율과 포장의 신뢰성을 고려하여 대략 1 내지 20분이 되도록 하는 것이 바람직하다.The polyvinyl alcohol vinyl applied in the present invention may have a thickness of, for example, 0.05 mm to 2 mm, which in turn relates to the time at which the polyvinyl alcohol vinyl is dissolved by water. Therefore, it is preferable to set the thickness of polyvinyl alcohol vinyl appropriately so that it may be set to about 1 to 20 minutes in consideration of work efficiency and packaging reliability in the process of mixing the flux for aluminum braze with water.

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 현장 브레이징 공정 중 알루미늄 브레이지용 플럭스를 물과 혼합하는 과정에서 분진의 발생을 최소화할 수 있어 작업자의 건강에 악영향을 끼치지 않고, 또한 주변환경이나 공기를 오염시키지 않는다는 이점이 있다.As described above, according to the present invention, it is possible to minimize the generation of dust in the process of mixing the aluminum braze flux with water during the field brazing process, without adversely affecting the health of workers, and also contaminates the surrounding environment and air There is an advantage of not letting.

Claims (3)

물에 잘 녹는 폴리비닐알코올(polyvinyl alcohol) 비닐로 이루어지고, 그 내부에 건조 분쇄된 불화알루미늄칼륨 알루미늄 브레이징용 플럭스를 수용하는 것을 특징으로 하는 알루미늄 브레이징용 플럭스의 포장재.A packaging material for an aluminum brazing flux, comprising: a polyvinyl alcohol vinyl soluble in water and containing a dry pulverized aluminum potassium fluoride aluminum brazing flux therein. 삭제delete 청구항 1에 있어서,The method according to claim 1, 상기 폴리비닐알코올 비닐의 두께는 0.05mm 내지 2mm인 것을 특징으로 하는 알루미늄 브레이징용 플럭스의 포장재.The polyvinyl alcohol vinyl has a thickness of 0.05mm to 2mm packaging material for aluminum brazing flux.
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KR101855953B1 (en) * 2016-06-14 2018-05-10 주식회사 제이씨 Apparatus for generating dry air and Method for making flux for brazing aluminium using the same

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