Method for preparing contact wires and pole blanks
A technology for contacting wires and wire rods, which is applied in the direction of metal rolling, manufacturing extensible conductors/cables, root rods/rods/wires/strip conductors, etc., and can solve the problem of large volume and weight of the entire rod blank and long contact wires. , expensive and other issues, to achieve the effect of simplifying heat treatment, maintaining electrical conductivity, and good physical properties
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[0026] Such as figure 1 as shown, figure 1 It is a schematic flow chart of the preparation method of the contact wire according to the present invention, which may specifically include the following steps:
[0027] Step 101: Smelting copper alloys (for example, copper-chromium-zirconium alloys, copper-silver-chromium alloys, etc.); various appropriate smelting methods can be used, and the content of impurities such as oxides should be as low as possible.
[0028] Step 102: preparing an oxygen-free casting rod; the oxygen-free casting rod can be prepared by means of vacuum melting method, shielding gas melting method, upward continuous casting or horizontal continuous casting.
[0029] Step 103: pretreatment; performing necessary cleaning or diameter reduction on the anaerobic cast rod.
[0030] Step 104: sending the billet rod into the extrusion machine for continuous hot extrusion, and rapidly cooling the extruded contact wire rod billet. The as-cast structure of the alloy...
Embodiment 1
[0036] 1) Non-vacuum melting copper-chromium-zirconium alloy. Copper-chromium alloy and copper-zirconium alloy are added in the form of master alloy. In the furnace, chromium element accounts for 0.6% of the total weight, zirconium accounts for 0.1%, magnesium accounts for 0.05%, and the rest is copper. Argon protection.
[0037] 2) Horizontal continuous casting to prepare oxygen-free casting rods.
[0038] 3) Clean the surface of the billet rod.
[0039] 4) Send the connected billet rods into the Kangfu extruder for continuous hot extrusion and cooling to obtain the contact wire rod billet.
[0040] 5) The billet is cold-rolled with a deformation of 45%.
[0041] 6) Carry out aging treatment at a temperature of 550° C. and keep warm for 2 hours.
[0042] 7) Cold drawing forming, multi-pass cold drawing according to the cross-sectional size of the contact wire, the deformation amount is 50%, and the tensile strength of the contact wire can reach more than 580MPa, and the e...
Embodiment 2
[0044] 1) Non-vacuum melting copper-silver-chromium alloy. Among them, the copper-chromium alloy is added in the form of an intermediate alloy, and the chromium element in the furnace accounts for 0.6% of the total weight, silver accounts for 0.1%, magnesium accounts for 0.05%, and the rest is copper.
[0045] 2) Horizontal continuous casting to prepare oxygen-free casting rods.
[0046] 3) Clean the surface of the billet rod.
[0047] 4) Send the connected billet rods into the Kangfu extruder for continuous hot extrusion and cooling to obtain the contact wire rod billet.
[0048] 5) The billet is cold-rolled with a deformation of 45%.
[0049] 6) Carry out aging treatment at a temperature of 480° C. and keep warm for 2 hours.
[0050] 7) Cold drawing forming, multi-pass cold drawing according to the cross-sectional size of the contact wire, the deformation amount is 45%, and the tensile strength of the contact wire can reach more than 580MPa, and the conductivity can reach...
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