A kind of preparation method of high-strength aluminum alloy wire/strip
A technology of aluminum alloy wire and aluminum alloy, applied in metal processing equipment, welding/cutting media/materials, welding equipment, etc., can solve the problems of poor weldability, poor plastic toughness, etc., and achieve improved welding, uniform structure, and avoid fracture Effects of threads and cracks
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Embodiment 1
[0022] For 7055 aluminum alloy, a billet with a diameter of 220mm is obtained by spray forming after the alloy is smelted, semi-solid upsetting is performed at 460°C to obtain an ingot with a diameter of 176mm, and the ingot with a diameter of 6mm is extruded by hot extrusion at 380°C Bars (more than 1) are rolled into rolls with an extrusion ratio of 86:1. The rolled bar is placed in a vacuum annealing furnace for annealing treatment, and the condition is that it is kept at 300 °C for 10 h and cooled with the furnace. After the annealing treatment, cross-rolled hot continuous rolling was performed, and the bar with a diameter of 6 mm was finish-rolled into a thick wire billet with a diameter of 3.6 mm in multiple passes. Solid solution heat treatment of the thick wire billet (water extraction after holding at 420 °C for 2 hours), then multiple times of drawing, and then intermediate annealing treatment. Then, a continuous wire drawing machine is used for multi-pass drawing, ...
Embodiment 2
[0024] For 7075 aluminum alloy, a billet with a diameter of 220mm is obtained by spray forming after the alloy is smelted, and a 228mm ingot is obtained by semi-solid upsetting at 575°C, which is extruded into a bar with a diameter of 10mm by hot extrusion at 460°C. And into rolls (1 out more), extrusion ratio 52:1. The rolled bar is placed in a vacuum annealing furnace for annealing treatment, and the condition is that it is kept at 200 °C for 24 hours and cooled with the furnace. After the annealing treatment, hot continuous rolling was performed, and the bar with a diameter of 10 mm was finish-rolled into a thick wire billet with a diameter of 3.4 mm in multiple passes. Solid solution heat treatment of the thick wire billet (water extraction after holding at 570 °C for 2 hours), followed by multiple drawing, and then intermediate annealing treatment. The continuous wire drawing machine performs multi-pass drawing, and the compression ratio is 6-10% to obtain 7075Al-Zn-Mg-C...
Embodiment 3
[0026] For the Al-12Zn-2.4Mg-1.1Cu high-zinc aluminum alloy, the alloy was smelted and sprayed to obtain a billet with a diameter of 220 mm, and semi-solid upsetting at 500 ° C to obtain a 90 mm ingot, which was obtained by hot extrusion at 480 ° C. 6mm rods are rolled into rolls (more than 1), and the extrusion ratio is 20:1. The rolled bar is placed in a vacuum annealing furnace for annealing treatment, and the condition is that it is kept at 250 °C for 20 h and cooled with the furnace. After the annealing treatment, hot continuous rolling is carried out, and the bar with a diameter of 5 mm is multi-pass finish rolling into a thick wire billet with a diameter of 3.6 mm. Solid solution heat treatment of the thick wire billet (water extraction after holding at 500 °C for 2 hours), followed by multiple post-drawing, intermediate annealing treatment, the intermediate annealing treatment condition is that the temperature is kept at 200 °C for 24 hours and cooled with the furnace....
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Abstract
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