Flexible automotive electrical conductor of high mechanical strength using a central wire of copper clad steel and the process for manufacture thereof
AssigneeServicios Condumex
InventorsArmando Rodriguez Valadez, Belisario Sanchez Vazquez
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Abstract
The invention relates to the manufacturing of a seven wire symmetrical hybrid conductor containing a hard copper alloy wire of copper clad steel in the center and six hard ETP copper peripheral wires in 24 and 26 AWG in sizes that fulfills the SAB J 1678 Ford specificiation with regard to electrical resistance and breaking load, having an outside diameter forming a tubular wall with very light undulations.
Claims22
A high mechanical strength, flexible automotive electrical conductor comprising:
- a) a central wire comprising a high strength material in hard condition, said central wire being a copper clad steel having a carbon content of 0.08% to 0.35%, said copper clad steel comprising a steel wire cover with copper having 40% conductivity;
- and
- b) a plurality of wires consisting essentially of electrolytic tough pitch copper in hardened condition helically laid about the central wire.
A process for the manufacture of high mechanical strength, flexible automotive electrical conductor, comprising the steps of:
- (a) performing a breakdown drawing of a central wire comprising a high strength material in hard conduction to obtain an annealed material, said high strength material of said central wire being a copper clad steel having a carbon content of 0.08% to 0.35%, said copper clad steel comprising a steel wire cover with copper having 40% conductivity;
- (b) performing a final drawing of the annealed material;
- and
- (c) bunching the central wire with a plurality of wires to from said conductor, said plurality of wires consisting essentially of electrolytic tough pitch copper in hardened condition, said plurality of wires being helically laid around said central wire.
A high mechanical strength, flexible automotive electrical conductor comprising:
- a) a central wire comprising a high strength material in hard condition having a mechanical resistance of above 90 Kg/mm2 and a minimum elongation of no more than 2%, said central wire being selected from the group consisting of32 AWG gauge wire and 33 AWG gauge wire, said central wire being a copper a clad steel having a carbon content of 0.08% to 0.35%, said copper clad steel comprising a steel wire cover wire cover with copper having 40% conductivity;
- and
- b) a plurality of wires consisting essentially of electrolytic tough pitch copper in hardened condition helically laid about the central wire, said plurality of wires having a mechanical resistance of above 50 Kgmm2 and a 1% minimum elongation.
Dependencies are inferred from the claim text.