KR20140000406A - Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof - Google Patents
Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof Download PDFInfo
- Publication number
- KR20140000406A KR20140000406A KR1020120067252A KR20120067252A KR20140000406A KR 20140000406 A KR20140000406 A KR 20140000406A KR 1020120067252 A KR1020120067252 A KR 1020120067252A KR 20120067252 A KR20120067252 A KR 20120067252A KR 20140000406 A KR20140000406 A KR 20140000406A
- Authority
- KR
- South Korea
- Prior art keywords
- aluminum
- alloy composition
- corrosion resistance
- tube
- intercooler
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
Abstract
Description
본 발명은 알루미늄 합금 조성물, 이를 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브 및 이의 제조방법에 관한 것으로, 보다 상세하게는 차량의 인터쿨러 압출 튜브 내부에서 발생되는 응축수의 음이온 등으로 인한 부식을 방지하기 위한 알루미늄 합금 조성물, 이를 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브 및 이의 제조방법에 관한 것이다.
The present invention relates to an aluminum alloy composition, an aluminum extruded tube for an intercooler having improved corrosion resistance, and a method for manufacturing the same, and more particularly, to prevent corrosion due to anions of condensate generated inside an intercooler extruded tube of a vehicle. The present invention relates to an aluminum alloy composition, an aluminum extrusion tube for an intercooler having improved corrosion resistance, and a method of manufacturing the same.
최근 들어, 지구 온난화 등 환경문제가 대두되면서 자동차 배기가스에 대한 규제가 강화되고 있는데, 특히 자동차 배기가스의 배출량에 대한 엄격한 기준이 적용되고 있다.In recent years, environmental problems such as global warming have increased, and regulations on automobile exhaust gas have been tightened. In particular, strict standards on vehicle exhaust gas emissions have been applied.
구체적으로, 2014년 9월부터 적용 예정인 EURO-6 에 의하면 승용차용 디젤 엔진의 경우 NOx 의 발생량을 80 mg/km 수준으로 저감시켜야 하는데, 이에 대응하여, 자동차 관련 업체들은 EGR, LNT, SCR 등의 신기술을 적용하고 있다.Specifically, according to EURO-6, which is scheduled to be applied from September 2014, in the case of diesel engines for passenger cars, the amount of NO x should be reduced to 80 mg / km level.In response, automobile-related companies, including EGR, LNT, SCR, etc. New technology is applied.
상기 EGR(Exhaust Gas Recirculation) 장치로서 배기 가스를 재순환하여 압축된 공기와 혼합시키는 고압 배기가스 재순환(High Pressure Exhaust Gas Recirculation, HP-EGR) 장치가 널리 이용되고 있으나, NOx 발생량의 추가적인 저감을 위해 DPF(Diesel Particle Filter) 후단의 배기가스를 재순환하여 터보차저 전단에서 공기와 혼합시키는 저압 배기가스 재순환(Low Pressure Exhaust Gas Recirculation, LP-EGR) 장치가 개발되었다. As the EGR (Exhaust Gas Recirculation) device, a High Pressure Exhaust Gas Recirculation (HP-EGR) device that recycles exhaust gas and mixes it with compressed air is widely used, but in order to further reduce NO x emissions. Low Pressure Exhaust Gas Recirculation (LP-EGR) has been developed to recycle the exhaust gas after the diesel particulate filter (DPF) and mix it with air at the front of the turbocharger.
이에 따라 상기 LP-EGR 장치에 의해 NOX 및 PM 등의 배출이 저감되고 연비가 향상되지만 수증기량이 많은 배기가스가 인터쿨러(intercooler)로 유입되는 문제가 있다.Accordingly, the LP-EGR device reduces emissions such as NO X and PM and improves fuel efficiency, but there is a problem in that exhaust gas having a large amount of water vapor flows into the intercooler.
이 때, 상기 인터쿨러는 터보과급기 등의 과급기로 흡입한 공기를 냉각하는 열교환기(Heat exchanger)인데, 상기 과급기로 급속히 압축된 공기는 온도가 상승하여 팽창함에 따라 산소 밀도가 떨어져 결과적으로 실린더 안의 충전 효율이 감소되며, 상기 인터쿨러는 압축된 고온의 공기를 냉각하여 공기 밀도를 상승시킴으로써, 실린더의 흡입 효율을 높이고 엔진의 연소효율을 상승시킬 뿐만 아니라 이에 따른 배기 가스의 배출량도 감소시킨다.
At this time, the intercooler is a heat exchanger that cools the air sucked by the supercharger such as a turbocharger, and the air rapidly compressed by the supercharger decreases the oxygen density as the temperature rises and expands, and consequently the filling in the cylinder. The efficiency is reduced, and the intercooler cools the compressed hot air to increase the air density, thereby increasing the suction efficiency of the cylinder and increasing the combustion efficiency of the engine as well as reducing the emission of exhaust gas.
상기 표 1은 종래 인터쿨러용 알루미늄 압출 튜브의 조성을 나타낸 것인데, 통상적으로 순알루미늄계(A1xxx)인 A1100 및 알루미늄-망간계(A3xxx)인 A3003이 사용된다.Table 1 shows the composition of an aluminum extrusion tube for a conventional intercooler, typically A1100, which is pure aluminum-based (A1xxx), and A3003, which is aluminum-manganese (A3xxx).
이 때, 상기 A1100 소재는 압출이 비교적 유리하여 컨덴서 등의 튜브 소재로 사용되고 있으나, 강도가 낮고, 부식에 취약한 단점이 있다.At this time, the A1100 material is relatively advantageous in extrusion, but is used as a tube material such as a capacitor, but has a disadvantage of low strength and susceptibility to corrosion.
이와 대조적으로, 상기 A3003 소재는 상대적으로 강도 및 내식성이 우수하여 컨덴서를 제외한 인터쿨러 등의 열교환기용 압출 튜브에 사용되고 있다.In contrast, the A3003 material is relatively excellent in strength and corrosion resistance, and is used in extruded tubes for heat exchangers such as intercoolers except capacitors.
그러나 최근 들어, NOX 및 PM 등의 배출 저감 및 연비 향상을 위해 저압 배기가스 재순환(LP-EGR) 장치의 사용이 증가함에 따라 고농도의 수증기를 포함하는 배기가스가 인터쿨러로 유입되고, 온도 하강시 상기 인터쿨러 튜브 소재 내부에 산성의 응축수가 발생하여, 상기 응축수에 존재하는 음이온에 의해 소재가 쉽게 부식되는 문제가 있다.Recently, however, when exhaust gas containing a high concentration of water vapor flows into the intercooler, temperature decrease as to the emissions and improving fuel efficiency, such as NO X and PM low-pressure exhaust gas recirculation (LP-EGR) is increased use of the apparatus Acidic condensed water is generated in the intercooler tube material, so that the material is easily corroded by anion present in the condensed water.
뿐만 아니라, 상기 인터쿨러 튜브 소재가 쉽게 부식되어 부품 교환주기가 짧아짐에 따라 경제적 손실이 발생하고, 부식으로 인한 상기 인터쿨러의 성능 저하로 인하여 배출가스 저감 및 연비 효율이 떨어지는 문제가 있다.
In addition, as the intercooler tube material is easily corroded, and the parts replacement cycle is shortened, an economic loss occurs, and emission reduction and fuel efficiency are lowered due to deterioration of the intercooler due to corrosion.
상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, 종래 열교환기에 사용되는 A3003 소재와 달리, 균일 부식이 일어나도록 유도하는 지르코늄(Zr) 등을 첨가하고, 소재의 조성비를 조절함으로써 알루미늄 합금 조성물, 이를 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브 및 이의 제조방법을 제공하고자 함에 있다.
An object of the present invention for solving the above problems, unlike the A3003 material used in the conventional heat exchanger, by adding a zirconium (Zr) or the like to induce a uniform corrosion, and by adjusting the composition ratio of the material aluminum alloy composition, An object of the present invention is to provide an extruded aluminum extrusion tube having improved corrosion resistance and a method of manufacturing the same.
상기와 같은 목적을 달성하기 위하여, 본 발명의 알루미늄 합금 조성물은 망간(Mn), 마그네슘(Mg), 구리(Cu), 실리콘(Si), 철(Fe)을 포함하고, 지르코늄(Zr) 및 잔부의 알루미늄(Al)을 더 포함하는 것을 특징으로 한다.In order to achieve the above object, the aluminum alloy composition of the present invention comprises manganese (Mn), magnesium (Mg), copper (Cu), silicon (Si), iron (Fe), zirconium (Zr) and glass It further comprises a negative aluminum (Al).
또한, 본 발명의 일실시예로 상기 지르코늄(Zr)은 상기 조성물 전체 중량 대비 0.05 내지 0.15 중량% 인 것이 바람직하다.In addition, in one embodiment of the present invention, the zirconium (Zr) is preferably 0.05 to 0.15% by weight relative to the total weight of the composition.
또한, 본 발명의 일실시예로 상기 알루미늄 합금 조성물은 망간(Mn) 0.50 내지 1.00 중량%, 마그네슘(Mg) 0.05 중량% 이하, 구리(Cu) 0.01 중량% 이하, 실리콘(Si) 0.2 중량% 이하, 철(Fe) 0.2 중량% 이하인 것이 바람직하다.In addition, in one embodiment of the present invention, the aluminum alloy composition is 0.50 to 1.00 wt% of manganese (Mn), 0.05 wt% or less of magnesium (Mg), 0.01 wt% or less of copper (Cu), or 0.2 wt% or less of silicon (Si). It is preferable that it is 0.2 weight% or less of iron (Fe).
또 다른 목적을 달성하기 위하여, 본 발명의 인터쿨러용 알루미늄 압출 튜브는 상기 알루미늄 합금 조성물을 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브인 것을 특징으로 한다. In order to achieve another object, the aluminum extrusion tube for intercooler of the present invention is characterized in that the aluminum extrusion tube for intercooler improved corrosion resistance comprising the aluminum alloy composition.
또 다른 목적을 달성하기 위하여, 본 발명의 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브의 제조 방법은 상기 알루미늄 합금 조성물을 전기로에 도입한 후 용해하여 용탕을 만드는 단계, 상기 용탕으로부터 빌릿(Billet) 연주기를 이용하여 직경 6 인치의 빌릿을 제작하는 단계, 상기 빌릿을 550℃ 에서 24 시간 동안 유지한 다음 공냉시켜 편석을 제거함으로써 내부를 균질화하는 단계, 상기 균질화된 빌릿을 520 ℃에서 예열한 다음, 직접압출법(direct extrusion)에 의해 압출기에 도입하여 튜브 형상으로 제조하는 단계, 상기 튜브 형상으로 제조된 빌릿을 절단 및 세척하는 단계를 포함하는 것을 특징으로 한다.
In order to achieve another object, the manufacturing method of the aluminum extrusion tube for the intercooler with improved corrosion resistance of the present invention is introduced into an electric furnace and dissolved to make a molten metal, using a billet (Billet) player from the molten metal Preparing a billet having a diameter of 6 inches, maintaining the billet at 550 ° C. for 24 hours, and then homogenizing the inside by removing segregation by air cooling, and preheating the homogenized billet at 520 ° C., followed by a direct extrusion method. It is characterized in that it comprises the step of introducing into the extruder by a direct extrusion to produce a tube shape, cutting and washing the billet produced in the tube shape.
상기와 같은 구성을 가지는 본 발명의 효과는, 종래 열교환기용 알루미늄 소재와 비교하여 내식성이 우수하므로 저압 배기가스 재순환(LP-EGR) 장치의 사용에 따른 가혹한 조건에도 적용가능한 장점이 있다.The effect of the present invention having the configuration described above has the advantage of being applicable to the harsh conditions caused by the use of low pressure exhaust gas recirculation (LP-EGR) device because it is excellent in corrosion resistance compared to the aluminum material for heat exchangers in the prior art.
구체적으로 지르코늄(Zr) 등의 첨가로 인해 균일 부식이 일어나도록 유도하여 공식 대비 소재의 관통 저항성이 증가되는 효과가 있다.Specifically, the addition of zirconium (Zr) and the like to induce a uniform corrosion to occur has the effect of increasing the penetration resistance of the material compared to the formula.
뿐만 아니라, 인터쿨러 등의 열교환기의 내식성이 개선됨에 따라 부품의 수명이 증가되고, 성능을 유지하여 배출 가스 저감 및 연비가 향상되는 효과가 있다.
In addition, as the corrosion resistance of the heat exchanger such as an intercooler is improved, the life of the component is increased, and the performance is maintained to reduce the emission gas and improve fuel efficiency.
도 1은 알루미늄-망간계(A3xxx)인 A3003 시편의 정전위 분극시험 후 단면을 나타낸 도면이다.
도 2는 본 발명의 조성을 가진 시편의 정전위 분극시험 후 단면을 나타낸 도면이다.
도 3은 정전위 분극시험 후 부식 깊이를 측정한 표이다.
도 4는 자동차용 인터쿨러를 나타낸 도면이다.
도 5는 본 발명의 조성물을 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브를 나타낸 도면이다.1 is a cross-sectional view after the potentiometric polarization test of the A3003 specimen of aluminum manganese (A3xxx).
2 is a view showing a cross section after the potential potential polarization test of the specimen having a composition of the present invention.
3 is a table measuring the corrosion depth after the potential potential polarization test.
4 is a view showing an intercooler for a vehicle.
5 is a view showing an aluminum extrusion tube for an intercooler with improved corrosion resistance comprising the composition of the present invention.
이하, 첨부된 도면에 의거하여 본 발명에 대하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 일 관점에서 망간(Mn), 마그네슘(Mg), 구리(Cu), 실리콘(Si), 철(Fe)을 포함하고, 지르코늄(Zr) 및 잔부의 알루미늄(Al)을 더 포함하는 알루미늄 합금 조성물에 관한 것이다.According to an aspect of the present invention, aluminum includes manganese (Mn), magnesium (Mg), copper (Cu), silicon (Si), iron (Fe), and further includes zirconium (Zr) and balance aluminum (Al). An alloy composition.
이 때, 상기 압출 튜브(extrustion tube)는 컨테이너 속에 재료를 넣고, 가압하여 간극으로부터 재료를 압출함으로써 가공된 튜브를 의미한다.At this time, the extrusion tube (extrustion tube) refers to a tube processed by putting the material in the container, pressurized to extrude the material from the gap.
Max.0.01
Max.
Max.0.2
Max.
Max.0.2
Max.
Max.0.05
Max.
~ 1.000.50
To 1.00
~ 0.150.05
To 0.15
상기 표 2는 본 발명에 의한 알루미늄 합금 조성물의 조성을 나타낸 것이다.Table 2 shows the composition of the aluminum alloy composition according to the present invention.
상기 표 2에 나타난 바와 같이, 본 발명에 의한 알루미늄 합금 조성물은, As shown in Table 2, the aluminum alloy composition according to the present invention,
망간(Mn) 0.50 내지 1.00 중량%, 마그네슘(Mg) 0 중량% 초과 0.05 중량% 이하, 구리(Cu) 0 중량% 초과 0.01 중량% 이하, 실리콘(Si) 0 중량% 초과 0.2 중량% 이하, 철(Fe) 0 중량% 초과 0.2 중량% 이하를 포함하고,Manganese (Mn) 0.50 to 1.00 wt%, Magnesium (Mg) 0 wt% or more 0.05 wt% or less, Copper (Cu) 0 wt% or more 0.01 wt% or less, Silicon (Si) 0 wt% or more 0.2 wt% or less, Iron (Fe) greater than 0 weight percent and 0.2 weight percent or less,
지르코늄(Zr) 0.05 내지 0.15 중량% 및 잔부의 알루미늄(Al)을 더 포함한다.Zirconium (Zr) 0.05 to 0.15% by weight and the balance further comprises aluminum (Al).
이 때, 상기 망간(Mn)은 알루미늄-망간계(A3xxx) 소재의 주요 원소로서 내식성을 유지하면서 강도를 향상시키는 역할을 하는바 0.50 중량% 이상이 바람직하고, 인성을 고려하여 1.00 중량% 이하가 바람직하다.At this time, the manganese (Mn) is a major element of the aluminum-manganese (A3xxx) material to play a role of improving the strength while maintaining the corrosion resistance is preferably 0.50% by weight or more, in consideration of toughness is less than 1.00% by weight desirable.
또한, 상기 지르코늄(Zr)은 본 발명에서 가장 중요한 성분으로, 입자 크기(Grain Size)를 미세화하여 강도를 향상시킬 뿐만 아니라, 소재 내부에 전위차를 발생시키는 석출물들을 미세하게 분산시켜 국부적으로 격렬하게 생기는 예측 곤란한 부식의 한 형태인 공식(pitting corrosion)의 발생을 억제함으로써 균일 부식이 일어나도록 유도하는바 0.05 중량% 이상이 바람직하고, 소재의 강도 향상으로 인한 압출의 어려움을 고려하여 0.15 중량% 이하가 바람직하다.In addition, the zirconium (Zr) is the most important component in the present invention, not only to improve the strength by miniaturizing the grain size (Grain Size), but also finely dispersed precipitates that generate a potential difference inside the material to produce locally intensely Induces uniform corrosion by suppressing the occurrence of pitting corrosion, a form of unpredictable corrosion, and is preferably 0.05% by weight or more, and 0.15% by weight or less in consideration of the difficulty of extrusion due to the strength improvement of the material. desirable.
한편 금속 속에 다른 원소가 주입되는 경우, 그 원소가 주입되는 것이 물성에 유리한 경우에는 상기 원소를 합금원소, 불리한 경우에는 불순물이라고 한다. 일반적으로 다른 원소를 의도적으로 주입하면 상기 원소를 합금원소라고 하고, 제조 과정에서 기술상의 문제로 불가피하게 주입되며, 그 함유량을 허용량 이하로 제한함으로써 그 존재가 인정되는 것이 불순물이다. 상기 불순물 원소의 제한량은 상기 불순물이 금속에 미치는 유해성이 어느 정도인가에 따라 달라진다. On the other hand, when another element is injected into the metal, the element is called an alloy element, and when it is disadvantageous, it is called an impurity. In general, when the other element is intentionally implanted, the element is called an alloy element, and it is inevitably impurities that are inevitably injected due to a technical problem in the manufacturing process, and the existence thereof is recognized by limiting the content thereof to an allowable amount or less. The limiting amount of the impurity element depends on the degree of harmfulness of the impurity to the metal.
구체적으로, 상기 마그네슘(Mg)은 실리콘(Si)과 함께 석출물을 생성시켜 소재의 강도를 향상시키지만 브레이징(brazing) 접합성을 악화시키므로 함량을 최소화할 필요가 있는데 본 발명에서는 0 중량% 초과 0.05 중량% 이하가 바람직하다. Specifically, the magnesium (Mg) to form a precipitate with the silicon (Si) to improve the strength of the material but deteriorate the brazing (bonding), it is necessary to minimize the content in the present invention, the weight is greater than 0% by weight 0.05% by weight The following is preferable.
또한, 상기 구리(Cu)는 알루미늄(Al), 마그네슘(Mg) 및 실리콘(Si)과 결합하여 취약한 석출물을 생성시키고 부식환경에서 음극 반응을 촉진시키므로 함량을 최소화할 필요가 있는데 본 발명에서는 0 중량% 초과 0.01 중량% 이하가 바람직하다.In addition, the copper (Cu) is combined with aluminum (Al), magnesium (Mg) and silicon (Si) to produce a weak precipitate and to promote the negative electrode reaction in a corrosive environment, it is necessary to minimize the content in the present invention 0 weight Preference is given to more than 0.01% by weight or less.
또한, 상기 실리콘(Si)은 마그네슘(Mg) 등과 반응하여 입계 석출물을 발생시키고 부식환경에서 음극 반응을 촉진시키므로 함량을 최소화할 필요가 있는데 본 발명에서는 0 중량% 초과 0.2 중량% 이하가 바람직하다.In addition, since the silicon (Si) reacts with magnesium (Mg) to generate grain boundary precipitates and promotes negative reaction in a corrosive environment, the content of silicon (Si) needs to be minimized.
또한, 상기 철(Fe)은 알루미늄(Al) 및 실리콘(Si)과 결합하여 입계 석출물을 발생시키고 부식환경에서 음극 반응을 촉진시키므로 함량을 최소화할 필요가 있는데 본 발명에서는 0 중량% 초과 0.2 중량% 이하가 바람직하다.
In addition, the iron (Fe) is combined with aluminum (Al) and silicon (Si) to generate grain boundary precipitates and promote the cathodic reaction in a corrosive environment, so the content needs to be minimized. The following is preferable.
도 1은 알루미늄-망간계(A3xxx)인 A3003 시편의 정전위 분극시험 후 단면을 나타낸 도면이고, 도 2는 본 발명의 조성을 가진 시편의 정전위 분극시험 후 단면을 나타낸 도면이다.1 is a cross-sectional view after the potentiometric polarization test of the A3003 specimen of aluminum-manganese (A3xxx), Figure 2 is a cross-sectional view after the potentiometric polarization test of the specimen having a composition of the present invention.
상기 정전위 분극시험은 시편에 일정한 전위를 인가 및 유지하여 부식을 가속화하는 방법으로 소재의 내식성 향상 효과를 검증하는데 유용한데, 응축수 모사액을 이용하여 12시간 동안 정전위 분극시험을 진행한 후 시편의 단면을 관찰하여 부식이 진행된 깊이를 비교하였다.The potentiometric polarization test is useful for verifying the effect of improving the corrosion resistance of the material by accelerating corrosion by applying and maintaining a constant potential to the specimen. The specimen is subjected to the potentiostatic polarization test for 12 hours using the condensate simulation liquid. The cross section was observed to compare the depth of corrosion.
도시된 바와 같이, 기준선(붉은 선)과 비교하여 A3003 시편의 경우 부식이 크게 진행된 것을 확인할 수 있으나, 본 발명의 조성을 가진 시편의 경우 표면이 기준선과 거의 일치하는 것을 확인할 수 있는데, 이는 상기 A3003 시편보다 부식 진행의 정도가 크게 감소한 것을 의미한다.As shown, in the case of the A3003 specimens compared to the reference line (red line) it can be seen that the corrosion was greatly progressed, but in the case of the specimen having the composition of the present invention it can be seen that the surface almost coincides with the reference line, which is the A3003 specimen This means that the degree of corrosion progress is greatly reduced.
도 3은 정전위 분극시험 후 부식 깊이를 측정한 표이다.3 is a table measuring the corrosion depth after the potential potential polarization test.
도시된 바와 같이, A3003 시편의 평균 부식 깊이는 97.51μm 인데 반하여 본 발명의 조성을 가진 시편의 평균 부식 깊이는 16.98μm 로 내식성이 약 83% 향상되어 부식에 대한 관통 저항성이 증가된 것을 알 수 있다.
As shown, while the average corrosion depth of the A3003 specimen is 97.51 μm, the average corrosion depth of the specimen having the composition of the present invention is 16.98 μm, which shows that the corrosion resistance is improved by about 83%, thereby increasing the penetration resistance to corrosion.
본 발명은 다른 관점에서 상기 조성물을 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브 및 이의 제조방법에 관한 것이다.The present invention relates to an aluminum extrusion tube for an intercooler with improved corrosion resistance including the composition and a manufacturing method thereof in another aspect.
도 4는 자동차용 인터쿨러를 나타낸 도면인데, 상기 인터쿨러는 터보과급기 등의 과급기로 흡입한 공기를 냉각하는 열교환기로 구조적인 측면에서 적층 유형, 튜브 유형 및 드로온 캡 유형 등이 있다.FIG. 4 is a view illustrating an intercooler for an automobile, wherein the intercooler is a heat exchanger for cooling the air sucked into a supercharger such as a turbocharger, and has a stacking type, a tube type, and a draw-on cap type in terms of structure.
특히 상기 튜브 유형은 내부에 핀을 붙이거나 다공관으로 발열량을 증가시키는데 일반적으로 알루미늄 압출 성형으로 제조된다.In particular, the tube type is generally manufactured by aluminum extrusion to pin the inside or increase the calorific value into the porous tube.
구체적으로, 본 발명의 조성물을 전기로에 도입한 후 용해하여 용탕을 만든다.Specifically, the composition of the present invention is introduced into an electric furnace and dissolved to form a molten metal.
그 다음, 상기 용탕으로부터 빌릿(Billet) 연주기를 이용하여 직경 6 인치의 빌릿을 제작한다.Then, a billet 6 inches in diameter is produced from the molten metal using a billet machine.
그 후, 상기 빌릿을 약 550℃ 에서 24 시간 동안 유지한 다음 공냉시켜 편석을 제거함으로써 내부를 균질화한다.The billet is then held at about 550 ° C. for 24 hours and then air cooled to homogenize the interior to remove segregation.
그리고 상기 균질화된 빌릿을 약 520 ℃에서 예열한 다음, 직접압출법(direct extrusion)에 의해 압출기에 도입하여 튜브 형상으로 제조한다. The homogenized billet is preheated at about 520 ° C., and then introduced into an extruder by direct extrusion to prepare a tube.
이 때, 상기 직접 압출법은 원통 내에 빌릿을 투입한 후 램으로 프레스하여 상기 램과 반대쪽에 위치한 다이스를 통해 압출하는 방법을 의미한다.In this case, the direct extrusion method refers to a method in which the billet is put into the cylinder and then pressed into a ram to extrude through a die located opposite to the ram.
최종적으로, 상기 튜브 형상으로 제조된 빌릿을 절단 및 세척한다.Finally, the billet made into the tube shape is cut and washed.
도 5는 본 발명의 조성물을 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브를 나타낸 도면인데, 상기 압출 튜브를 핀, 플레이트 및 사이드 탱크 등과 가조립한 뒤 클램프로 고정하여 플럭스 처리하고 브레이징로를 통과시킴으로써 인터쿨러를 제조한다.FIG. 5 is a view illustrating an aluminum extrusion tube for improved corrosion resistance including the composition of the present invention, wherein the extrusion tube is preassembled to a fin, a plate, a side tank, and the like, and then fixed by clamping and passing through a brazing furnace. To prepare.
상기 인터쿨러에 대해 염수분무시험(Salt Spray Test, SST)을 1000시간 동안 진행하였는데 관통 등의 부식문제가 발생하지 않았다.
The salt spray test (SST) was performed for 1000 hours on the intercooler, but corrosion problems such as penetration did not occur.
이와 같이, 본 발명에 의해 인터쿨러 등의 열교환기의 내식성이 개선됨에 따라 관통 저항성이 증가하여 부품의 수명이 증가되고 성능이 개선되어 저압 배기가스 재순환(LP-EGR) 장치의 사용에 따른 가혹한 조건에도 적용할 수 있다. As such, the corrosion resistance of the heat exchanger such as the intercooler is improved according to the present invention to increase the penetration resistance, thereby improving the life of the parts and improving the performance, so that even in the harsh conditions of the use of the low pressure exhaust gas recirculation (LP-EGR) device Applicable
Claims (5)
지르코늄(Zr) 및 잔부의 알루미늄(Al)을 더 포함하는 알루미늄 합금 조성물.
Manganese (Mn), magnesium (Mg), copper (Cu), silicon (Si), iron (Fe),
An aluminum alloy composition further comprising zirconium (Zr) and the balance of aluminum (Al).
According to claim 1, wherein the zirconium (Zr) is an aluminum alloy composition, characterized in that 0.05 to 0.15% by weight relative to the total weight of the composition.
망간(Mn) 0.50 내지 1.00 중량%, 마그네슘(Mg) 0.05 중량% 이하, 구리(Cu) 0.01 중량% 이하, 실리콘(Si) 0.2 중량% 이하, 철(Fe) 0.2 중량% 이하인 것을 특징으로 하는 알루미늄 합금 조성물.
The method of claim 1, wherein the aluminum alloy composition,
Manganese (Mn) 0.50 to 1.00 wt%, magnesium (Mg) 0.05 wt% or less, copper (Cu) 0.01 wt% or less, silicon (Si) 0.2 wt% or less, iron (Fe) 0.2 wt% or less Alloy composition.
The aluminum extrusion tube for an intercooler with improved corrosion resistance containing the aluminum alloy composition of any one of Claims 1-3.
상기 용탕으로부터 빌릿(Billet) 연주기를 이용하여 직경 6 인치의 빌릿을 제작하는 단계;
상기 빌릿을 550℃ 에서 24 시간 동안 유지한 다음 공냉시켜 편석을 제거함으로써 내부를 균질화하는 단계;
상기 균질화된 빌릿을 520 ℃에서 예열한 다음, 직접압출법(direct extrusion)에 의해 압출기에 도입하여 튜브 형상으로 제조하는 단계;
상기 튜브 형상으로 제조된 빌릿을 절단 및 세척하는 단계; 를 포함하는 내식성이 향상된 인터쿨러용 알루미늄 압출 튜브의 제조방법.Introducing the aluminum alloy composition of any one of claims 1 to 3 into an electric furnace to dissolve to form a molten metal;
Manufacturing a billet having a diameter of 6 inches from the molten metal using a billet player;
Maintaining the billet at 550 ° C. for 24 hours and then homogenizing the interior by air cooling to remove segregation;
Preheating the homogenized billet at 520 ° C., and then introducing the homogenized billet into an extruder by direct extrusion to produce a tube shape;
Cutting and washing the billet formed into the tube shape; Method of producing an aluminum extrusion tube for intercoolers with improved corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120067252A KR20140000406A (en) | 2012-06-22 | 2012-06-22 | Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120067252A KR20140000406A (en) | 2012-06-22 | 2012-06-22 | Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140000406A true KR20140000406A (en) | 2014-01-03 |
Family
ID=50138285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120067252A KR20140000406A (en) | 2012-06-22 | 2012-06-22 | Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140000406A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457806A (en) * | 2014-12-02 | 2015-03-25 | 佛山轻子精密测控技术有限公司 | Composite type rotary encoder and measurement method thereof |
| KR20160112362A (en) | 2015-03-19 | 2016-09-28 | (주)경남금속 | A Manufacturing method of aluminum allay product |
| KR20160115662A (en) | 2015-03-25 | 2016-10-06 | 주식회사 에프티넷 | Corrosion resistant aluminium alloy, manufacturing method for tube or pipe using the aluminium alloy, and heat exchanger using the same |
| KR20170116726A (en) | 2016-04-12 | 2017-10-20 | 손희식 | Corrosion resistant heat exchanger using the control of alloy composition and potential |
| DE102016224699A1 (en) | 2016-09-09 | 2018-03-15 | Hyundai Motor Company | Water cooled EGR cooler |
| US10113515B1 (en) | 2017-04-28 | 2018-10-30 | Hyundai Motor Company | Water cooled EGR cooler |
| KR20180124323A (en) | 2017-05-11 | 2018-11-21 | 현대자동차주식회사 | Water-cooled egr cooler, and the manufacutring method thereof |
| WO2018216832A1 (en) | 2017-05-25 | 2018-11-29 | 손희식 | Highly corrosion-resistant heat exchanger system using control of alloy composition and alloy potential |
| DE102018110959A1 (en) | 2017-12-13 | 2019-06-13 | Hyundai Motor Company | Water cooled EGR (exhaust gas recirculation) cooler |
| US10378487B2 (en) | 2016-09-09 | 2019-08-13 | Hyundai Motor Company | Water-cooled exhaust gas recirculation cooler |
| KR20210020037A (en) * | 2018-05-22 | 2021-02-23 | 알레리스 로울드 프로덕츠 저머니 게엠베하 | Brazed heat exchanger |
| KR20220147213A (en) * | 2021-04-27 | 2022-11-03 | 성균관대학교산학협력단 | Method of fabricating aluminum alloy for heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263173A (en) * | 1992-03-16 | 1993-10-12 | Furukawa Alum Co Ltd | Aluminum alloy for fin material of heat exchanger |
| JPH11172388A (en) * | 1997-12-08 | 1999-06-29 | Furukawa Electric Co Ltd:The | Aluminum alloy extruded pipe material for air conditioner piping and its production |
| JP2011007384A (en) * | 2009-06-24 | 2011-01-13 | Sumitomo Light Metal Ind Ltd | Heat exchanger for automobile made of aluminum alloy and method for manufacturing the same, and method for manufacturing aluminum alloy extruded material for refrigerant passage pipe of heat exchanger |
| KR20110072237A (en) * | 2009-12-22 | 2011-06-29 | 엘에스전선 주식회사 | Aluminum alloy with high corrosion resistance for heat exchanger tube and method for manufactured of heat exchanger tube using thereof |
-
2012
- 2012-06-22 KR KR1020120067252A patent/KR20140000406A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263173A (en) * | 1992-03-16 | 1993-10-12 | Furukawa Alum Co Ltd | Aluminum alloy for fin material of heat exchanger |
| JPH11172388A (en) * | 1997-12-08 | 1999-06-29 | Furukawa Electric Co Ltd:The | Aluminum alloy extruded pipe material for air conditioner piping and its production |
| JP2011007384A (en) * | 2009-06-24 | 2011-01-13 | Sumitomo Light Metal Ind Ltd | Heat exchanger for automobile made of aluminum alloy and method for manufacturing the same, and method for manufacturing aluminum alloy extruded material for refrigerant passage pipe of heat exchanger |
| KR20110072237A (en) * | 2009-12-22 | 2011-06-29 | 엘에스전선 주식회사 | Aluminum alloy with high corrosion resistance for heat exchanger tube and method for manufactured of heat exchanger tube using thereof |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457806A (en) * | 2014-12-02 | 2015-03-25 | 佛山轻子精密测控技术有限公司 | Composite type rotary encoder and measurement method thereof |
| KR20160112362A (en) | 2015-03-19 | 2016-09-28 | (주)경남금속 | A Manufacturing method of aluminum allay product |
| KR20160115662A (en) | 2015-03-25 | 2016-10-06 | 주식회사 에프티넷 | Corrosion resistant aluminium alloy, manufacturing method for tube or pipe using the aluminium alloy, and heat exchanger using the same |
| KR20170116726A (en) | 2016-04-12 | 2017-10-20 | 손희식 | Corrosion resistant heat exchanger using the control of alloy composition and potential |
| DE102016224699A1 (en) | 2016-09-09 | 2018-03-15 | Hyundai Motor Company | Water cooled EGR cooler |
| KR20180028835A (en) | 2016-09-09 | 2018-03-19 | 현대자동차주식회사 | Water-cooled egr cooler |
| US10087893B2 (en) | 2016-09-09 | 2018-10-02 | Hyundai Motor Company | Water-cooled EGR cooler |
| US10378487B2 (en) | 2016-09-09 | 2019-08-13 | Hyundai Motor Company | Water-cooled exhaust gas recirculation cooler |
| KR20180121180A (en) | 2017-04-28 | 2018-11-07 | 현대자동차주식회사 | Water cooled egr cooler |
| US10113515B1 (en) | 2017-04-28 | 2018-10-30 | Hyundai Motor Company | Water cooled EGR cooler |
| KR20180124323A (en) | 2017-05-11 | 2018-11-21 | 현대자동차주식회사 | Water-cooled egr cooler, and the manufacutring method thereof |
| US10253730B2 (en) | 2017-05-11 | 2019-04-09 | Hyundai Motor Company | Water-cooled EGR cooler, and the manufacturing method thereof |
| WO2018216832A1 (en) | 2017-05-25 | 2018-11-29 | 손희식 | Highly corrosion-resistant heat exchanger system using control of alloy composition and alloy potential |
| DE102018110959A1 (en) | 2017-12-13 | 2019-06-13 | Hyundai Motor Company | Water cooled EGR (exhaust gas recirculation) cooler |
| KR20190070540A (en) | 2017-12-13 | 2019-06-21 | 현대자동차주식회사 | Water-cooled egr cooler |
| KR20210020037A (en) * | 2018-05-22 | 2021-02-23 | 알레리스 로울드 프로덕츠 저머니 게엠베하 | Brazed heat exchanger |
| KR20220147213A (en) * | 2021-04-27 | 2022-11-03 | 성균관대학교산학협력단 | Method of fabricating aluminum alloy for heat exchanger |
| WO2022231148A1 (en) * | 2021-04-27 | 2022-11-03 | 성균관대학교산학협력단 | Method for manufacturing aluminum alloy for heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20140000406A (en) | Aluminium alloy composition, extrution tube for intercooler with improved corrosion resistance comprising the same and method for manufacturing thereof | |
| JP6621254B2 (en) | Austenitic stainless steel sheet for exhaust parts with excellent heat resistance and surface smoothness and method for producing the same | |
| CN102899539B (en) | High-plasticity aluminum-silicon alloy for die casting and preparation method thereof | |
| CN103484796B (en) | Processing technology for engine piston material | |
| WO2021184827A1 (en) | Composite treatment method for recycled wrought aluminum alloy melt | |
| CN110029250A (en) | High-elongation birmastic and its compression casting preparation method | |
| CN105274405A (en) | Rare earth aluminum alloy and preparation method thereof | |
| CN105008590A (en) | Ferritic stainless steel sheet having excellent brazability, heat exchanger, ferritic stainless steel sheet for heat exchangers, ferritic stainless steel, ferritic stainless steel for members of fuel supply systems, and member of fuel supply system | |
| TW201925489A (en) | Aluminum alloy sheet for battery lids for molding integrated explosion-prevention valve, and method for producing same | |
| CN110643862A (en) | Aluminum alloy for new energy automobile battery shell and pressure casting preparation method thereof | |
| CN109468502B (en) | Aluminum alloy extruded material with impact resistance and energy absorption characteristics and manufacturing method thereof | |
| CN103710592A (en) | Preparation method of aluminum alloy profile for high speed train body | |
| CN104694800A (en) | High-strength light Al-Mg-Zn alloy | |
| CN101186986A (en) | High-intensity aluminum manganese alloy for heat exchanger and its manufacture method | |
| CN1483848A (en) | Low pressure casting aluminium alloy for cylinder cap of minicar engine | |
| CN114774741B (en) | Heat-resistant high-strength cast aluminum alloy and manufacturing method thereof | |
| CN103451484A (en) | Casting aluminium-silicon alloy for cylinder body of automobile engine | |
| US9631879B2 (en) | Aluminum alloy for extrusion and drawing processes | |
| EP4234737A1 (en) | Aluminum alloy and component part prepared therefrom | |
| KR101604206B1 (en) | Aluminum alloy for microporous hollow material which has excellent extrudability and grain boundary corrosion resistance, and method for producing same | |
| EP3505648B1 (en) | High-strength aluminum alloy, internal combustion engine piston comprising said alloy, and method for producing internal combustion engine piston | |
| CN101386940B (en) | Al-Mn-Mg-Cu-Ni-Ce alloy and manufacturing method thereof | |
| KR20090128774A (en) | Manufacturing method of aluminum-high magnesium alloy sheet by melts quality and phase control | |
| CN111114044A (en) | Medium-temperature high-strength aluminum alloy plate and preparation method thereof | |
| CN109706352A (en) | A kind of aluminum alloy extruded tube and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| N231 | Notification of change of applicant | ||
| A201 | Request for examination | ||
| E601 | Decision to refuse application |