Metal composite wire and its preparation method, wire
A metal composite and metal wire technology, applied in the direction of metal/alloy conductors, root rods/rods/wires/strip conductors, equipment for manufacturing conductive/semiconductive layers, etc., can solve the problem of tensile strength of aluminum-clad steel wires and 1% reduction in elongation stress, failure to guarantee the bonding strength of steel and aluminum, reduction of elongation of aluminum-clad steel wire, etc., to achieve long service life, avoid core material exposure, and high safety and stability
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Embodiment 1
[0060] Step S1: Select the aluminum-clad steel wire rod LB14-2.80, that is, the coated metal wire rod 10, including the carbon steel core material 1 with a carbon content of 0.78%-0.85% and the aluminum (that is, the surface layer) coated on the carbon steel 2), the measured tensile strength is 1720MPa, the elongation after fracture is 1.2%, twisted 39 times, and the average surface hardness is 51HV.
[0061] Step S2: keeping the aluminum-clad steel wire rod at 270° C. for 7 hours for aging treatment to obtain a pretreated aluminum-clad steel wire (ie, a pretreated metal composite wire 20 ). The experimental results show that the tensile strength of the pretreated aluminum-clad steel wire is 1672MPa, the elongation after breaking is 3.2%, the surface hardness is 44HV after torsion 38 circles; the tensile strength and surface hardness of the product measured after this step are somewhat Decreased, but significantly increased the elongation of the original aluminum-clad steel wi...
Embodiment 2
[0066] Step S1: Select the aluminum-clad steel wire LB20-2.10, that is, the coated metal wire 10, including the carbon steel core material 1 with a carbon content of 0.68-0.75% and the aluminum coated on the outside of the carbon steel (that is, the surface 2 ), the measured tensile strength of the coated metal wire 10 is 1446MPa, the elongation after breaking is 1.4%, twisted 54 times, and the average surface hardness is 51HV;
[0067] Step S2: keeping the aluminum-clad steel wire at 270° C. for 6 hours for aging treatment to obtain a pretreated aluminum-clad steel wire (that is, a pretreated metal composite wire 20 ), the measured tensile strength of the pretreated aluminum-clad steel wire is 1424 MPa, The elongation after breaking is 4.8%, the twist is 42 circles, and the surface hardness is 45HV.
[0068] Step S3: Pull the pretreated aluminum-clad steel wire from the die hole 200 of the drawing machine, wherein the outlet aperture d of the die hole 200 is 0.02mm smaller th...
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Abstract
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