Production process of ultrathin-wall aluminum alloy section for aviation
An aluminum alloy profile and production process technology, which is applied in the production process field of aluminum alloy profiles, can solve the problems of extrusion and heat treatment deformation of ultra-thin aluminum alloy profiles, and achieve the effects of reducing quenching deformation, uniform cooling speed and improving product quality.
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Embodiment 1
[0016] Embodiment 1: The production process of ultra-thin-walled aluminum alloy profiles for aviation in this embodiment includes the following steps:
[0017] 1) Before extrusion: heat the aluminum alloy cast rod at a temperature of 400°C; heat the extrusion die at a temperature of 430°C; heat the extrusion cylinder at a temperature of 390°C; In terms of mass percentage, the composition of the aluminum alloy casting rod is: Si: ≤0.5%; Fe: ≤0.5%; Cu: 3.9%-4.9%; Mg: 1.2%-1.8%; Mn: 0.3%-0.9% ; Cr: ≤0.1%; Zn: ≤0.25%; Ti: ≤0.15%; Al: balance;
[0018] 2) Profile extrusion: the extrusion speed is controlled at ≤0.1m / min;
[0019] 3) Straightening: Fix the two ends of the extruded profile 1 on the hydraulic stretching machine through the clamp 2, and then start the hydraulic stretching and straightening machine to stretch and straighten the profile; Fixture holes matching the external shape, and the end of the profile is clamped and fixed in the fixture holes;
[0020] 4) Carry o...
Embodiment 2
[0026] Embodiment 2: The production process of ultra-thin-walled aluminum alloy profiles for aviation in this embodiment includes the following steps:
[0027] Before extrusion: heat the aluminum alloy cast rod at a temperature of 405°C; heat the extrusion die at a temperature of 435°C; heat the extrusion cylinder at a temperature of 397°C; by mass percentage In other words, the composition of the aluminum alloy cast rod is: Si: ≤0.5%; Fe: ≤0.5%; Cu: 3.9%-4.9%; Mg: 1.2%-1.8%; Mn: 0.3%-0.9%; Cr : ≤0.1%; Zn: ≤0.25%; Ti: ≤0.15%; Al: balance;
[0028] 2) Profile extrusion: the extrusion speed is controlled at ≤0.1m / min;
[0029] 3) Straightening: Fix the two ends of the extruded profile 1 on the hydraulic stretching machine through the clamp 2, and then start the hydraulic stretching and straightening machine to stretch and straighten the profile; Fixture holes matching the external shape, and the end of the profile is clamped and fixed in the fixture holes;
[0030] 4) Carry o...
Embodiment 3
[0036] Embodiment 3: The production process of ultra-thin-walled aluminum alloy profiles for aviation in this embodiment includes the following steps:
[0037] Before extrusion: heat the aluminum alloy cast rod at a temperature of 410°C; heat the extrusion die at a temperature of 440°C; heat the extrusion cylinder at a temperature of 405°C; by mass percentage In other words, the composition of the aluminum alloy cast rod is: Si: ≤0.5%; Fe: ≤0.5%; Cu: 3.9%-4.9%; Mg: 1.2%-1.8%; Mn: 0.3%-0.9%; Cr : ≤0.1%; Zn: ≤0.25%; Ti: ≤0.15%; Al: balance;
[0038] 2) Profile extrusion: the extrusion speed is controlled at ≤0.1m / min;
[0039] 3) Straightening: Fix the two ends of the extruded profile 1 on the hydraulic stretching machine through the clamp 2, and then start the hydraulic stretching and straightening machine to stretch and straighten the profile; Fixture holes matching the external shape, and the end of the profile is clamped and fixed in the fixture holes;
[0040] 4) Carry o...
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