A kind of preparation method of strengthened Cu-NB composite wire
A composite wire, cu-nb technology, applied in metal rolling and other directions, can solve the problems of decreased electrical conductivity, inability to apply, difficult to break through 1GPa, etc., to improve elongation, improve quality and performance, and significantly reduce core wire. Effect
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Embodiment 1
[0026] This embodiment includes the following steps:
[0027] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 7.74 mm, and then annealed at a temperature of 700 ° C for 4 hours;
[0028]Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 60%, the speed is 0.1m / s;
[0029] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.
[0030] After testing, the room temperature tensile strength of the strengthened Cu-Nb composite wire prepared in this example is 1038MPa, which is 5% higher than that of the Cu...
Embodiment 2
[0035] This embodiment includes the following steps:
[0036] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 7.74 mm, and then annealed at a temperature of 780° C. for 4 hours;
[0037] Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 60%, the speed is 0.1m / s;
[0038] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.
[0039] After testing, the room temperature tensile strength of the strengthened Cu-Nb composite wire prepared in this example is 891MPa, which is 4% higher than that of the Cu...
Embodiment 3
[0041] This embodiment includes the following steps:
[0042] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 8.66 mm, and then annealed at a temperature of 700 ° C for 4 hours;
[0043] Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 70%, the speed is 0.3m / s;
[0044] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.
[0045] After testing, the room temperature tensile strength of the reinforced Cu-Nb composite wire prepared in this example is 1096MPa, which is 11% higher than that of the Cu...
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