Staged uniform extrusion forming method of hollow thin-walled aluminum alloy tubular profile
A tubular profile and extrusion molding technology, applied in the field of metal materials, can solve problems such as unsatisfactory application process, tube wall thickness, and large size of dispersed phase precipitation, etc., to achieve efficient and orderly operation process, high tensile strength, and high-quality finished products high effect
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Embodiment 1
[0061] In this embodiment, the 1060 aluminum alloy with a diameter of 30cm is the operation object, then there are:
[0062] The alloy ingot rough slab includes the following components in mass percentage:
[0063] Zn 0.05%;
[0064] Mg 0.05%;
[0065] Cu 0.05%;
[0066] Si 0.25%;
[0067] Mn 0.05%;
[0068] Fe 0.4%;
[0069] Ti 0.03%;
[0070] V 0.05%;
[0071] The remainder is Al.
[0072] Furthermore, a method for hierarchically homogenized extrusion molding of hollow thin-walled aluminum alloy tubular profiles is characterized in that it includes three-stage uniform processing, wherein:
[0073] ① The first level of homogenization: put the ingot rough billet of a hollow thin-walled aluminum alloy tubular equipment obtained by semi-continuous casting into a heating furnace and heat it to 390 °C at a speed of 15 °C / min, perform homogenization and extrusion, and then keep it warm 15 hours;
[0074] ② Primary cooling: Cool the rough embryos after the first homogeniza...
Embodiment 2
[0080] In this embodiment, the 3003 aluminum alloy with a diameter of 20cm is the object of operation, then:
[0081] The alloy ingot rough slab includes the following components in mass percentage:
[0082] Zn 0.1%;
[0083] Cu 0.1%;
[0084] Si 0.6%;
[0085] Mn 1.25%;
[0086] Fe 0.7%;
[0087] The remainder is Al.
[0088] Furthermore, a method for hierarchically homogenized extrusion molding of hollow thin-walled aluminum alloy tubular profiles is characterized in that it includes three-stage uniform processing, wherein:
[0089] ① The first level of homogenization: put the ingot rough billet of a hollow thin-walled aluminum alloy tubular equipment obtained by semi-continuous casting into a heating furnace and heat it to 460 °C at a speed of 12 °C / min, perform homogenization and extrusion, and then keep it warm 10 hours;
[0090] ② Primary cooling: Cool the rough embryos after the first homogenization treatment to 220°C and then cool to room temperature;
[0091] ...
Embodiment 3
[0096] In this embodiment, the 4043 aluminum alloy with a diameter of 40cm is the object of operation, then:
[0097] The alloy ingot rough slab includes the following components in mass percentage:
[0098] Zn 0.01%;
[0099] Mg 0.05%;
[0100] Cu 0.03%;
[0101] Si 5%;
[0102] Mn 0.05%;
[0103] Fe 0.08%;
[0104] Zr 0.01%;
[0105] Ti 0.02%;
[0106] V 0.05%;
[0107] The remainder is Al.
[0108] Furthermore, a method for hierarchically homogenized extrusion molding of hollow thin-walled aluminum alloy tubular profiles is characterized in that it includes three-stage uniform processing, wherein:
[0109] ① The first level of homogenization: Put the ingot rough billet of a hollow thin-walled aluminum alloy tubular equipment obtained by semi-continuous casting into the heating furnace and heat it to 380 °C at a speed of 20 °C / min, perform homogenization and extrusion, and then keep it warm 20 hours;
[0110] ② Primary cooling: Cool the rough embryos after the fir...
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