Abstract: A heat exchanger comprising a header to supply a refrigerant to a tube through which the refrigerant flows; a heat exchange fin to be coupled to the surface of the tube; and a filler to couple the tube and the heat exchange fin. The header, the tube, the heat exchange fin, and the filler comprise an aluminum alloy, the heat exchange fin comprises a fin core layer and a fin clad layer formed on at least one surface of the fin core layer, the tube has a potential value that is higher than that of the fin core layer by 20 to 250 mV, and the fin core layer has a potential value 20 to 100 mV lower than that of the fin clad layer.

Abstract: A heat exchanger includes a plurality of tubes in which a refrigerant flows, heat-exchanger fins provided between the plurality of tubes, and a filler coupling the heat-exchanger fins to the plurality of tubes, wherein each of the plurality of tubes comprises a first aluminum alloy, each of the heat-exchanger fins comprises a second aluminum alloy, the filler comprises a third aluminum alloy, the plurality of tubes have a corrosion potential of ?745 mV to ?695 mV, the filler has a corrosion potential of ?810 mV to ?720 mV, and the heat-exchanger fins have a corrosion potential of ?810 mV to ?740 mV.

Abstract: A suction-capillary tube assembly which comprises a main pipe including a suction hole formed inside the main pipe along a longitudinal direction of the main pipe and a capillary hole formed inside the main pipe along the longitudinal direction of the main pipe; a first terminal suction pipe disposed at one end of the suction hole of the main pipe to communicate with the suction hole; and a first terminal capillary pipe disposed at one end of the capillary hole of the main pipe to communicate with the capillary hole.

Abstract: A high-potential and high-corrosion resistance aluminum alloy and a high-corrosion resistance heat exchanger using the aluminum alloy are provided. The aluminum alloy includes: 0.6 to 0.8 percent by weight (wt %) of manganese (Mn); 0.05 to 0.30 wt % of magnesium (Mg); 0.05 to 0.35 wt % of zinc (Zn); 0.05 to 0.20 wt % of chromium (Cr); and a remaining wt % of aluminum (Al) and inevitable impurities, wherein a corrosion potential value of the aluminum alloy is in a range of ?720 to ?680 mV.

Abstract: Provided is an aluminum alloy for die casting. The aluminum alloy includes: 3-10 wt % silicon (Si); 0.1-2.0 wt % magnesium (Mg); 0.01-1.3 wt % iron (Fe); 0.01-2.0 wt % zinc (Zn); 0.01-1.5 wt % copper (Cu); 0.01-0.5 wt % manganese (Mn); 0.01-0.5 wt % chrome (Cr); 0.01˜2.0 wt % lanthanum (La); 0.01˜2.0 wt % cerium (Ce); 0.01˜2.0 wt % strontium (Sr); rest aluminum (Al); and unavoidable impurities. The aluminum alloy is improved in not only corrosion-resistance but also physical properties.

Abstract: A heat exchanger includes a plurality of tubes in which a refrigerant flows, heat-exchanger fins provided between the plurality of tubes, and a filler coupling the heat-exchanger fins to the plurality of tubes, wherein each of the plurality of tubes comprises a first aluminum alloy, each of the heat-exchanger fins comprises a second aluminum alloy, the filler comprises a third aluminum alloy, the plurality of tubes have a corrosion potential of ?745 mV to ?695 mV, the filler has a corrosion potential of ?810 mV to ?720 mV, and the heat-exchanger fins have a corrosion potential of ?810 mV to ?740 mV.

Abstract: An extrusion apparatus and a method for manufacturing an aluminum capillary tube using the same are provided. The extrusion apparatus includes a container, a housing mold provided on one side of the container and including a plurality of dies formed with a plurality of holes, and a ram pressing an aluminum billet accommodated in the container in a direction from another side to the one side of the container so that the aluminum billet accommodated in the container is extruded into a plurality of aluminum capillary tubes having cross-sectional shapes corresponding to the plurality of holes, and the number of the plurality of holes is determined based on an inner diameter of the container and a diameter of each of the plurality of holes.

Abstract: The present disclosure relates to an aluminum alloy having chloride resistance and corrosion resistance against harmful gas environments as well as processability to the extent of undergoing extrusion and drawing. The aluminum alloy according to the present disclosure comprise 0.1-4.5 wt % of Mg, 0.1-0.60 wt % of Zn, 0.05-0.1 wt % of Fe, 0.05-0.1 wt % of Si, and the balance Al.

Abstract: Provided is an aluminum alloy for die casting. The aluminum alloy includes: 3-10 wt % silicon (Si); 0.1-2.0 wt % magnesium (Mg); 0.01-1.3 wt % iron (Fe); 0.01-2.0 wt % zinc (Zn); 0.01-1.5 wt % copper (Cu); 0.01-0.5 wt % manganese (Mn); 0.01-0.5 wt % chrome (Cr); 0.01˜2.0 wt % lanthanum (La); 0.0˜12.0 wt % cerium (Ce); 0.0˜12.0 wt % strontium (Sr); rest aluminum (Al); and unavoidable impurities. The aluminum alloy is improved in not only corrosion-resistance but also physical properties.

Abstract: An extrusion apparatus and a method for manufacturing an aluminum capillary tube using the same are provided. The extrusion apparatus includes a container, a housing mold provided on one side of the container and including a plurality of dies formed with a plurality of holes, and a ram pressing an aluminum billet accommodated in the container in a direction from another side to the one side of the container so that the aluminum billet accommodated in the container is extruded into a plurality of aluminum capillary tubes having cross-sectional shapes corresponding to the plurality of holes, and the number of the plurality of holes is determined based on an inner diameter of the container and a diameter of each of the plurality of holes.

Abstract: An aluminum alloy for die casting. The aluminum alloy for die casting of the present disclosure includes, by wt %, 3?Si?10, 3?Mg?10, 0.01?Fe?1.3, 0.01?Zn?2, 0.01?Cu?1.5, 0.01?Mn?0.5, 0.05?Ti?0.15, 0.01?La?2, 0.01?Sr?2, a balance of Al, and unavoidable impurities.

Abstract: Disclosed herein is a heat exchanger, and more particularly, a heat exchanger of an aluminum alloy material designed to have an electric potential difference between a tube of the heat exchanger and a heat exchanger fin. A heat exchanger according to one aspect of the present disclosure includes a tube through which a refrigerant flows, a heat exchanger fin coupled to a surface of the tube, and a filler that couples the tube and the heat exchanger fin, wherein the tube is formed of an aluminum alloy material that includes a rare-earth metal, and the heat exchanger fin and the filler may be formed of aluminum alloy materials that include silicon (Si), copper (Cu), and zinc (Zn).