High-strength and anti-corrosion aluminum alloy foil for automobile radiator fins and manufacturing method of high-strength and anti-corrosion aluminum alloy foil
A technology of automobile radiator and aluminum alloy foil, which is applied in the field of aluminum alloy, can solve the problems that cannot fully meet the requirements of high-strength thinning, and achieve the effect of improving corrosion potential, improving casting performance and corrosion resistance, and increasing alloy strength
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Embodiment 1
[0023] In this example, Al-1.1Mn-1.1Si-0.4Fe-0.3Cu-0.3Sm alloy plate (thickness: 30mm) is prepared by smelting and casting methods, milled to a thickness of 25mm, heated at 500°C for 1 hour, and then hot-rolled into a 4mm plate, then cold rolled to 0.15mm, annealed at 380°C for 2 hours and then cold rolled to a thickness of 0.10mm. After simulated brazing heat treatment, the mechanical properties of the alloy foil were tested with an electronic tensile testing machine. The alloy foil The tensile strength is 150MPa, the yield strength is 87MPa, and the elongation is 9.2%. The strength properties of the alloy foil are significantly better than the post-weld tensile strength and yield strength of the 3003 aluminum alloy.
Embodiment 2
[0025] Al-1.1Mn-1.1Si-0.4Fe-0.3Cu-0.5Sm alloy plate (thickness 30mm) was first prepared by smelting and casting method, milled to a thickness of 26mm, heated at 500°C, and hot rolled to 2.6mm. Then cold rolled to 0.15mm, annealed at 380°C and then cold rolled to a thickness of 0.10mm. After simulated brazing heat treatment, the tensile strength of the tested alloy foil was 160MPa, the yield strength was 90MPa, and the elongation was 9.8%.
Embodiment 3
[0027] First prepare Al-1.1Mn-1.1Si-0.4Fe-0.3Cu-0.8Sm alloy plate (thickness 30mm) by smelting and casting method, mill the face to a thickness of 28mm, heat at 500°C for 1 hour and hot roll to 2.6mm , then cold-rolled to 0.15mm, annealed at 390°C and then cold-rolled to a thickness of 0.10mm. After simulated brazing heat treatment, the tensile strength of the tested alloy foil was 143MPa, the yield strength was 84MPa, and the elongation was greater than 8.8%.
[0028] The performance tests carried out by the aluminum alloy samples of different compositions in the above-mentioned embodiments are as follows:
[0029] (1) Tensile test at room temperature: make a standard tensile sample according to the national standard GB / T228-2002, stretch it on a Zwick Z20 universal tensile testing machine at a tensile speed of 1mm / min, and measure the length of 50mm, and measure the tensile strength Strength, yield strength and elongation;
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