Thin-walled aluminum profile for rail train bodies
A technology for rail trains and aluminum profiles, which is applied in the field of aluminum alloy materials and can solve problems such as general mechanical properties
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Embodiment 1
[0021] A rail train body thin-walled aluminum profile, comprising the following components by weight percentage:
[0022] Si 0.66%, Fe 0.18%, Mn 0.24%, Mg 0.42%, Cr 0.04%, Ti 0.04%, Cu 0.03%, La 0.14%, Sr 0.16%, Ce 0.05%, and the balance is Al.
[0023] Preferably, the preparation method of the thin-walled aluminum profile of the rail train car body is as follows:
[0024] S1. Homogenization annealing: First, heat the aluminum alloy ingot obtained by melting and casting according to the composition at 535°C for 2 hours, then heat it up to 560°C for 3 hours, and finally hold it at 580°C for 5 minutes, and then cool it to room temperature by air cooling;
[0025] S2. Hot extrusion: Hot extrude the ingot cooled in step S1 on an extruder, the extrusion temperature is 500°C, the extrusion ratio is 41.5, and the extrusion speed is 1m / min, then water-cooled and quenched, first at 8°C Cool to 280°C at a cooling rate of / s, then cool to 150°C at a cooling rate of 4°C / s, and finally co...
Embodiment 2
[0029] A rail train body thin-walled aluminum profile, comprising the following components by weight percentage:
[0030] Si 0.7%, Fe 0.22%, Mn 0.26%, Mg 0.45%, Cr 0.05%, Ti 0.06%, Cu 0.035%, La 0.18%, Sr 0.14%, Ce 0.06%, and the balance is Al.
[0031] Preferably, the preparation method of the thin-walled aluminum profile of the rail train car body is as follows:
[0032] S1. Homogenization annealing: First, heat the aluminum alloy ingot obtained by melting and casting according to the composition at 540°C for 3 hours, then heat it up to 570°C for 4 hours, and finally hold it at 583°C for 6 minutes, and then cool it to room temperature by air cooling;
[0033] S2, hot extrusion: the ingot cooled in step S1 is hot-extruded on an extruder, the extrusion temperature is 510°C, the extrusion ratio is 43.5, and the extrusion speed is 1.5m / min, then water-cooled and quenched, first with 10 Cool to 300°C at a cooling rate of ℃ / s, then cool to 180°C at a cooling rate of 4.5°C / s, and ...
Embodiment 3
[0037] A rail train body thin-walled aluminum profile, comprising the following components by weight percentage:
[0038] Si 0.72%, Fe 0.24%, Mn 0.3%, Mg 0.46%, Cr 0.08%, Ti 0.08%, Cu 0.05%, La 0.2%, Sr 0.12%, Ce 0.05%, and the balance is Al.
[0039] Preferably, the preparation method of the thin-walled aluminum profile of the rail train car body is as follows:
[0040] S1. Homogenization annealing: First, heat the aluminum alloy ingot obtained by melting and casting according to the composition at 550°C for 4 hours, then heat it up to 575°C for 5 hours, and finally hold it at 585°C for 8 minutes, and then cool it to room temperature by air cooling;
[0041] S2, hot extrusion: the ingot cooled in step S1 is hot-extruded on an extruder, the extrusion temperature is 515°C, the extrusion ratio is 45.5, and the extrusion speed is 2.5m / min, then water-cooled and quenched, first with 10 Cool to 310°C at a cooling rate of ℃ / s, then cool to 180°C at a cooling rate of 5°C / s, and fina...
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