Aluminum alloy material having improved corrosion resistance for gas tube in egr cooler
An EGR cooler and aluminum alloy material technology, applied in the field of aluminum alloy materials, can solve the problems of easy corrosion of materials, and achieve the effects of saving maintenance costs, reducing emissions, and prolonging the replacement cycle.
Inactive Publication Date: 2019-11-29
KORENS
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Problems solved by technology
Therefore, the material of the gas line 20 is easily corroded due to the negative ions in the condensed water
Method used
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Embodiment 1
[0063] Aluminum alloys were prepared with compositions shown in Table 4 below.
[0064] A core material composed of an aluminum alloy was prepared, and an A3003 aluminum alloy intermediate material and an A4045 aluminum alloy outer material were clad on opposite sides of the core material. Here, the core material is 1.5 mm thick, and the middle and outer materials are each 0.075 mm thick. Specifically, the middle material on one side is 0.0375 mm thick, the middle material on the opposite side is 0.0375 mm thick, the outer material is 0.0375 mm thick on one side, and the outer material is 0.0375 mm thick on the other side. The material is roll formed to prepare the gas lines.
[0065] Table 4
[0066] 【Table 4】
[0067] According to the composition of embodiment 1 aluminum alloy
[0068]
[0069]
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Abstract
The present invention relates to an aluminum alloy material for a gas tube included in an exhaust gas recirculation (EGR) system, and more specifically, comprising: a core material; an outer materialcladded onto one surface or two surfaces of the core material; and an intermediate material cladded in between the core material and the outer material to prevent magnesium from the core material diffusing into the outer material, wherein the core material comprises copper (Cu), silicon (Si), iron (Fe), magnesium (Mg), manganese (Mn), titanium (Ti), and aluminum (Al). The aluminum alloy material for the gas tube in the EGR cooler, according to the present invention, provides the advantage of maintaining a long life even under extreme environments due to excellent hardness and corrosion resistance.
Description
technical field [0001] The present invention relates to an aluminum alloy material for gas piping contained in an exhaust gas recirculation (hereinafter referred to as "EGR") system. More particularly, the present invention relates to an aluminum alloy material for a gas line in an EGR cooler, which has improved corrosion resistance and strength. Background technique [0002] Exhaust gas recirculation (EGR) systems recirculate some exhaust gas back into the intake system to increase CO in the intake air 2 concentration, thereby reducing the temperature in the combustion chamber and thereby reducing NO x discharge system. [0003] NO x The generation mechanism will be described in detail. Air contains about 79% nitrogen, 21% oxygen and other trace elements. Nitrogen and oxygen do not react at room temperature, but react at elevated temperatures of about 1450°C or higher and form thermal NO x . Diesel engines use compression ignition for combustion. Due to the developm...
Claims
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IPC IPC(8): C22C21/00C22C21/02B32B15/01B32B15/20F02M26/29
CPCB32B15/017B32B15/20C22C21/00C22C21/02C22C2204/00F02M26/29B32B15/016Y10T428/12764
Inventor 赵亨根
Owner KORENS