Method for manufacturing aluminum alloy rivet rod for aerospace product
A technology of elongation after fracture and manufacturing method, applied in the field of manufacturing aluminum alloy rivet bars, can solve the problems of low shear strength and elongation after fracture, and achieve good surface quality, excellent comprehensive mechanical properties, and good formability. Effect
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specific Embodiment approach 1
[0007] Specific implementation mode 1: The manufacturing method of an aluminum alloy rivet bar for aerospace in this embodiment is realized by the following steps: 1. According to the mass percentage of elements in the aluminum alloy bar, Mg: 0.5% to 1.0%, Cr: 0.10%~0.20%, Si: 0~0.25%, Fe: 0~0.35%, Cu: 4.5%~5.2%, Mn: 0.40%~0.6%, Ti: 0.04%~0.12%, Zr: 0.1%~0.2% % and the ratio of the balance Al Weigh aluminum ingots, aluminum-manganese alloys, aluminum-zirconium alloys, aluminum-titanium alloys, aluminum-chromium alloys, copper ingots and magnesium ingots, and add them to the melting furnace. Smelting at low temperature for 3 to 4 hours to obtain molten aluminum alloy; 2. The molten aluminum alloy obtained in step 1 is cast at a casting temperature of 725°C to 750°C, a casting speed of 90mm / min to 95mm / min, and a cooling water intensity of 0.01MPa~0.03MPa and cooling water temperature of 10℃~20℃ to cast into cast rods with a diameter of 170㎜~174mm; 3. Cut the cast rods obtained ...
specific Embodiment approach 2
[0010] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the mass percentages of elements in the aluminum alloy bar are Mg: 0.7%-0.9%, Cr: 0.12%-0.16%, Si: 0.01 %~0.15%, Fe: 0.1%~0.25%, Cu: 4.6%~5.1%, Mn: 0.49%~0.55%, Ti: 0.06%~0.10%, Zr: 0.12%~0.18% and the balance of Al , weighing aluminum ingots, aluminum-manganese alloys, aluminum-zirconium alloys, aluminum-titanium alloys, aluminum-chromium alloys, copper ingots and magnesium ingots. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0011] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step 1, the mass percentages of elements in the aluminum alloy bar are Mg: 0.75%, Cr: 0.13%, Si: 0.06%, Fe: 0.16%, Cu: 4.79%, Mn: 0.51%, Ti: 0.084%, Zr: 0.14% and the ratio of the balance Al, weighing aluminum ingots, aluminum-manganese alloys, aluminum-zirconium alloys, aluminum-titanium alloys, aluminum-chromium alloys, Copper and Magnesium Ingots. Others are the same as in the first or second embodiment.
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