KR100398629B1 - Flux composition for aluminum torch welding - Google Patents
Flux composition for aluminum torch welding Download PDFInfo
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- KR100398629B1 KR100398629B1 KR10-2001-0003352A KR20010003352A KR100398629B1 KR 100398629 B1 KR100398629 B1 KR 100398629B1 KR 20010003352 A KR20010003352 A KR 20010003352A KR 100398629 B1 KR100398629 B1 KR 100398629B1
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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
- B23K35/36—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
- B23K35/362—Selection of compositions of fluxes
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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
- B23K35/36—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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
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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
- B23K35/36—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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
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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
- B23K35/36—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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/361—Alumina or aluminates
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
상세하게는 알루미늄계 화합물, 불산 및 세슘계 화합물을 반응시켜 내부식성이 우수하며, 환경오염을 예방할 수 있는 알루미늄 토치 용접용 플럭스 조성물에 관한 것이다.In detail, the present invention relates to a flux composition for welding aluminum torch, which is excellent in corrosion resistance by reacting an aluminum compound, hydrofluoric acid, and cesium compound, and can prevent environmental pollution.
본 발명의 알루미늄 토치 용접용 플럭스 조성물은 불산(HF), 수산화알루미늄[Al(OH)3], 산화알루미늄(Al2O3) 및 그들의 혼합물 중에서 선택한 알루미늄(Al)계 화합물, 탄산세슘(Cs2CO3), 수산화세슘(CsOH) 및 그들의 혼합물 중에서 선택한 세슘(Cs)계 화합물을 반응시켜 제조된 불화알루미늄세슘(CsAlF4) 플럭스 조성물이며, 플럭스 조성물의 용접성을 향상시키기 위해 불화물계 화합물을 첨가한다.The flux composition for welding aluminum torch of the present invention is an aluminum (Al) compound selected from hydrofluoric acid (HF), aluminum hydroxide [Al (OH) 3 ], aluminum oxide (Al 2 O 3 ) and mixtures thereof, cesium carbonate (Cs 2 Cesium aluminum fluoride (CsAlF 4 ) flux composition prepared by reacting a cesium (Cs) -based compound selected from CO 3 ), cesium hydroxide (CsOH) and mixtures thereof, and a fluoride-based compound is added to improve the weldability of the flux composition. .
Description
본 발명은 알루미늄 토치 용접용 플럭스 조성물에 관한 것으로, 더욱 상세하게는 알루미늄계 화합물, 불산 및 세슘계 화합물을 반응시켜 제조된 내부식성이 우수한 알루미늄 토치 용접용 플럭스 조성물에 관한 것이다.The present invention relates to a flux composition for welding aluminum torch, and more particularly, to a flux composition for welding aluminum torch having excellent corrosion resistance prepared by reacting an aluminum compound, a hydrofluoric acid, and a cesium compound.
알루미늄 공조기를 포함하여 알루미늄계 제품을 완성하기 위해서는 도 1에 제시된 바와 같이 알루미늄 소재(1)(2)를 각각 연결하고, 용접봉(3)과 토치(5)를 이용하여 각각 용접하며, 불필요한 물질을 직접 분해 또는 촉진시키거나 생성 자체를 방지하기 위하여 사용되는 플럭스 조성물(4)을 용접봉에 묻혀서 함께 사용한다.In order to complete an aluminum-based product including an aluminum air conditioner, as shown in FIG. 1, the aluminum materials 1 and 2 are connected to each other, and the welding electrodes 3 and the torch 5 are welded to each other, and unnecessary materials are used. The flux composition (4), which is used to directly decompose or promote or prevent the production itself, is used together with the welding rod.
토치 용접용 플럭스 조성물은 용접봉(3)에 플럭스 조성물(4)을 묻힌 다음 열원으로 용접하고자 하는 소재에 가열하여 소재간을 용접하여 사용한다.The flux composition for torch welding is used by welding the material between the material to be welded with a heat source by embedding the flux composition 4 in the electrode 3.
일반적으로 알루미늄 제품의 토치 용접용 플럭스 조성물로는 염화리튬(LiCl), 염화나트륨(NaCl), 염화칼륨(KCl), 염화아연(ZnCl2), 불화리튬(LiF) 등이 주성분으로 이루어진 염화물계 플럭스를 사용한다. 그러나, 염화물계 플럭스 조성물은 플럭스 내에 존재하는 염소의 영향 때문에 용접한 후에는 피막에 따른 부식이 발생되어 용접부위의 내구성을 저하시키는 문제점이 있었다.In general, as a flux composition for torch welding of aluminum products, a chloride-based flux including lithium chloride (LiCl), sodium chloride (NaCl), potassium chloride (KCl), zinc chloride (ZnCl 2 ), and lithium fluoride (LiF) as a main component is used. do. However, the chloride-based flux composition has a problem in that corrosion occurs due to the coating after welding due to the influence of chlorine present in the flux, thereby lowering the durability of the welded portion.
이러한 문제점을 해결하기 위하여 용접 후 플럭스 잔사피막을 제거하기 위하여 별도의 세척공정을 수행하였으나, 잔사피막의 제거시 발생하는 염화물계 화합물에 의해 환경에 유해한 폐수가 필연적으로 발생하였으며, 폐수를 제거하기 위한 배수처리공정이 별도로 요구되는 문제점이 있다.In order to solve this problem, a separate washing process was performed to remove the flux residue coating after welding.However, wastewater harmful to the environment was inevitably generated by the chloride compound generated during removal of the residue coating. There is a problem that a separate treatment process is required.
본 발명은 이와 같은 문제점을 해결하기 위한 것으로 용접 후 잔사피막에 따른 부식이 전혀 발생하지 않는 내부식성의 알루미늄 토치 용접용 플럭스 조성물을 제공하는 것이다.The present invention is to solve the above problems to provide a flux composition for corrosion resistance aluminum torch welding that does not generate any corrosion after the residual coating after welding.
본 발명의 다른 목적은 용접 후 별도의 잔사피막을 제거하기 위한 세척공정이 필요없는 알루미늄 토치 용접용 플럭스 조성물을 제공하는 것이다.Another object of the present invention is to provide a flux composition for welding aluminum torch, which does not require a cleaning process for removing a separate residue film after welding.
도 1은 일반적인 토치 용접을 수행하는 단면도이다.1 is a cross-sectional view for performing a general torch welding.
상기와 같은 목적을 달성하기 위한 본 발명의 알루미늄 토치 용접용 플럭스 조성물은, 알루미늄(Al)계 화합물, 불산(HF), 세슘(Cs)계 화합물을 상기 알루미늄의 몰수를 기준으로 하여 불소 4 내지 4.5몰과 세슘 1 내지 1.5몰을 반응시켜 제조된 불화알루미늄세슘(CsAlF4)의 조성을 포함한다.Flux composition for aluminum torch welding of the present invention for achieving the above object, the aluminum (Al) compound, hydrofluoric acid (HF), cesium (Cs) compound based on the mole number of the aluminum fluorine 4 to 4.5 It comprises a composition of aluminum cesium fluoride (CsAlF 4 ) prepared by reacting the mole and 1 to 1.5 moles of cesium.
바람직하게 알루미늄계 화합물은 수산화알루미늄[Al(OH)3] 또는 산화알루미늄(Al2O3) 또는 이들의 혼합물 중에서 선택한 어느 하나를 사용하며, 세슘계 화합물은 탄산세슘(Cs2CO3), 수산화세슘(CsOH) 또는 이들의 혼합물 중에서 선택한 어느 하나를 사용한다.Preferably, the aluminum compound is any one selected from aluminum hydroxide [Al (OH) 3 ], aluminum oxide (Al 2 O 3 ) or a mixture thereof, and the cesium compound is cesium carbonate (Cs 2 CO 3 ), hydroxide Any one selected from cesium (CsOH) or mixtures thereof is used.
바람직하게 알루미늄 토치 용접용 플럭스의 용접성을 향상시키기 위해 불화알루미늄세슘에 불화칼륨(KF), 불화리튬(LiF), 불화칼슘(CaF2), 불화나트륨(NaF), 불화아연(ZnF2), 불화알루미늄칼륨(KAlF4또는 K2AlF5) 또는 이들의 혼합물 중에서 선택한 어느 하나 이상의 불화물계 화합물을 첨가한다.Preferably, in order to improve the weldability of the flux for welding aluminum torch, potassium cesium fluoride (KF), lithium fluoride (LiF), calcium fluoride (CaF 2 ), sodium fluoride (NaF), zinc fluoride (ZnF 2 ) and fluoride At least one fluoride compound selected from potassium aluminum (KAlF 4 or K 2 AlF 5 ) or mixtures thereof is added.
이때, 불화알루미늄세슘에 첨가하는 불화물계 화합물은 전체 총 중량을 기준으로 불화알루미늄세슘 70 내지 99.9중량%, 불화물계 화합물 30 내지 0.1중량%이며, 전체 중량을 기준으로 40 내지 0.1중량%의 물을 함유하는 불화알루미늄세슘을 사용하는 것이 바람직하다.In this case, the fluoride compound added to the cesium aluminum fluoride is 70 to 99.9% by weight of aluminum cesium fluoride, 30 to 0.1% by weight of the fluoride compound, 40 to 0.1% by weight of water based on the total weight It is preferable to use cesium aluminum fluoride containing.
이하, 본 발명의 알루미늄 토치 용접용 플럭스 조성물의 제조방법을 살펴본다.Hereinafter, a method of manufacturing the flux composition for welding aluminum torch of the present invention will be described.
먼저 불산에 물을 혼합하여 5 내지 50%의 농도를 유지하는 불산 용액에 알루미늄계 화합물을 첨가하면 불산과 알루미늄계 화합물의 발열반응으로 온도가 상승한다. 온도센서를 온도를 관찰하고 냉각수를 이용하여 혼합액의 온도가 30 내지 90℃의 적정온도가 되도록 한다. 그 후에 5 내지 85%의 농도와 30 내지 90℃의 온도를 갖는 세슘계 화합물의 용액을 첨가하여 반응시켜 5 내지 100%의 순도를 갖는 불화알루미늄세슘(CsAlF4)을 제조한다. 이때, 전체 첨가되는 알루미늄계 화합물, 불산 및 세슘의 량은 알루미늄의 몰수를 기준으로 각각 불소 4 내지 4.5몰, 세슘 1 내지 1.5몰이다.First, when the aluminum compound is added to the hydrofluoric acid solution in which water is mixed with hydrofluoric acid and maintained at a concentration of 5 to 50%, the temperature is increased by exothermic reaction between the hydrofluoric acid and the aluminum compound. Observe the temperature with a temperature sensor and use a cooling water to bring the temperature of the mixed solution to an appropriate temperature of 30 to 90 ° C. Thereafter, a solution of cesium-based compound having a concentration of 5 to 85% and a temperature of 30 to 90 ° C. is added to react to prepare cesium aluminum fluoride (CsAlF 4 ) having a purity of 5 to 100%. At this time, the total amount of the aluminum compound, hydrofluoric acid and cesium to be added are 4 to 4.5 moles of fluorine and 1 to 1.5 moles of cesium, respectively, based on the number of moles of aluminum.
이때, 불산 용액은 15 내지 25% 농도인 것이 바람직하고, 세슘계 화합물은 40 내지 70%의 농도와 50 내지 80℃의 온도를 갖는 것이 바람직하다.At this time, the hydrofluoric acid solution is preferably 15 to 25% concentration, the cesium-based compound preferably has a concentration of 40 to 70% and a temperature of 50 to 80 ℃.
이와 같이 제조된 불화알루미늄세슘(CsAlF4)의 플럭스 조성물은 토치 용접에 있어서 용접이 잘되지 않는 경향이 있기 때문에 용접성을 향상시키기 위하여 불화물계 화합물을 첨가한다.Since the flux composition of aluminum cesium fluoride (CsAlF 4 ) thus prepared tends to be difficult to weld in torch welding, a fluoride compound is added to improve weldability.
불화알루미늄세슘(CsAlF4)에 첨가하는 불화물계 화합물은 불화칼륨(KF), 불화리튬(LiF), 불화칼슘(CaF2), 불화나트륨(NaF), 불화아연(ZnF2), 불화알루미늄칼륨(KAlF4또는 K2AlF5) 등을 하나 이상 혼합하여 사용한다. 이때, 전체 조성은 불화알루미늄세슘 70 내지 99.9중량%, 불화물계 화합물 30 내지 0.1%이다.The fluoride compounds added to cesium aluminum fluoride (CsAlF 4 ) include potassium fluoride (KF), lithium fluoride (LiF), calcium fluoride (CaF 2 ), sodium fluoride (NaF), zinc fluoride (ZnF 2 ), and potassium aluminum fluoride ( KAlF 4 or K 2 AlF 5 ) and the like are used in combination. At this time, the total composition is 70 to 99.9% by weight of cesium aluminum fluoride, 30 to 0.1% of the fluoride compound.
<실시예 1><Example 1>
반응조에 55.5%의 농도를 갖는 불산 180.18g에 물 375.37g를 가하여 혼합하다. 여기에 99.4%의 농도를 갖는 수산화알루미늄 98.08g를 첨가하여 반응시키고, 냉각수를 이용하여 70℃의 온도를 유지시킨다. 그 후에 70%의 농도를 갖는 탄산세슘을 첨가하고 pH를 6으로 조정하여 반응시켜 불화알루미늄세슘을 생성하였다.375.37 g of water is added to 180.18 g of hydrofluoric acid having a concentration of 55.5% in a reactor. 98.08 g of aluminum hydroxide having a concentration of 99.4% is added thereto to react, and the temperature is maintained at 70 ° C using cooling water. Then cesium carbonate having a concentration of 70% was added and the pH was adjusted to 6 to produce cesium aluminum fluoride.
생성된 불화알루미늄세슘의 순도를 50%로 조정한 후, 전체 조성중량을 기준으로 불화알루미늄세슘 95중량%에 불화칼륨과 불화리튬의 혼합물 5중량%를 첨가하여 반죽(Paste)상을 띤 액상의 불화알루미늄세슘계 플럭스 조성물을 제조하였다.After adjusting the purity of the resultant aluminum cesium fluoride to 50%, 5% by weight of a mixture of potassium fluoride and lithium fluoride was added to 95% by weight of aluminum cesium fluoride based on the total weight of the composition to form a paste-like liquid. An aluminum cesium fluoride flux composition was prepared.
제도된 불화알루미늄세슘계 플럭스 조성물을 사용하여 알루미늄 제품을 토치 용접하고, 35℃의 온도에서 5%의 염화나트륨(NaCl) 용액에 침지하여 염수분무시험을 통하여 부식성을 측정하여 다음의 비교예와 함께 표 1에 나타내었다.Torch welding aluminum products using drafted aluminum cesium fluoride-based flux composition, and immersed in 5% sodium chloride (NaCl) solution at a temperature of 35 ℃ to measure the corrosion through the salt spray test and the table with the following comparative example 1 is shown.
<비교예>Comparative Example
염화물계 플럭스 조성물을 사용하여 알루미늄 제품을 토치용접하고, 35℃의 온도에서 5%의 염화나트륨(NaCl) 용액에 침지하여 염수분무시험을 통하여 부식성을 측정하였다.The aluminum product was torch welded using the chloride-based flux composition, and was immersed in a 5% sodium chloride (NaCl) solution at a temperature of 35 ° C. to measure corrosion resistance through a salt spray test.
Ｏ : 부식발생 없음, × : 부식발생, - : 시험중지(부식발생)O: No corrosion, ×: Corrosion,-: Test stop (corrosion)
<실시예 2><Example 2>
실시예 1과 동일한 방법으로 제조된 불화알루미늄세슘계 플럭스 조성물을 알루미늄 제품에 토치 용접한 후에 상온에서 방치하여 부식성을 측정하였으며, 비교예의 염화물계 플럭스 조성물로서 토치 용접한 제품과 함께 비교하여 표 2에 나타내었다.The aluminum cesium fluoride flux composition prepared in the same manner as in Example 1 was torch welded to an aluminum product, and then left at room temperature to measure the corrosiveness. Table 2 was compared with the torch welded product as a chloride flux composition of Comparative Example. Indicated.
Ｏ : 부식발생 없음, × : 부식발생, - : 시험중지(부식발생)O: No corrosion, ×: Corrosion,-: Test stop (corrosion)
실시예 1 및 실시예 2에서 살펴본 바와 같이 본 발명의 불화알루미늄세슘계 플럭스 조성물은 염화물계 플럭스 조성물에 비하여 상온에서는 거의 영구적으로 부식을 예방할 수 있는 것을 알 수 있으며, 염 농도가 높은 상태에서도 거의 부식이 발생하지 않는 것을 알 수 있다.As seen in Examples 1 and 2, the aluminum cesium fluoride flux composition of the present invention can be almost permanently prevented from corrosion at room temperature compared to the chloride-based flux composition. It can be seen that this does not occur.
더욱이 불화알루미늄세슘계 플럭스 조성물은 기존의 염화물계 플럭스에 비하여 거의 부식력이 없기 때문에 토치작업후 플럭스 조성물의 제거하는 세척작업을 수행할 필요가 없다.Moreover, since the aluminum cesium fluoride flux composition has almost no corrosive force as compared with the conventional chloride-based flux, it is not necessary to perform the washing operation to remove the flux composition after the torch operation.
이상과 같이 본 발명에 대해 상세히 기술하였지만, 본 발명이 속하는 기술분야에 있어서 통상의 지식을 가진 사람이라면, 첨부된 청구범위에 정의된 본 발명의 정신 및 범위를 벗어나지 않으면서 본 발명을 여러 가지로 변형 또는 변경하여 실시할 수 있음을 알 수 있을 것이다. 따라서 본 발명의 앞으로의 실시예들의 변경은 본 발명의 기술을 벗어날 수 없을 것이다.Although the present invention has been described in detail above, those of ordinary skill in the art to which the present invention pertains can make various changes without departing from the spirit and scope of the present invention as defined in the appended claims. It will be appreciated that modifications or variations can be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.
본 발명에 따라 제조된 알루미늄 토치 용접용 불화알루미늄세슘계 플럭스 조성물을 이용하여 토치 용접한 알루미늄 제품들은 우수한 내부식성을 갖기 때문에 제품의 부식성으로 발생하는 문제들을 예방할 수 있다.Torch-welded aluminum products using the aluminum cesium fluoride-based flux composition for aluminum torch welding according to the present invention have excellent corrosion resistance, thereby preventing problems caused by corrosion of the product.
또한 알루미늄 제품들을 토치 용접한 후에 염화물계 플럭스 조성물에서 필요한 잔여 플럭스 세척공정이 필요없기 때문에 공정을 단축시킬 수 있고, 세척시 발생하는 플럭스 조성물의 오염을 예방할 수 있다.In addition, since the residual flux cleaning process required for the chloride-based flux composition is not required after torch welding the aluminum products, the process can be shortened and contamination of the flux composition generated during the cleaning can be prevented.
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