Method and apparatus for producing stranded aluminum cables
First Claim
1. A method of producing at least two stranded aluminum cables of different gauge from aluminum wires all of the same initial cross-sectional area, which comprises assembling and stranding a first set of the wires all of the same initial cross-sectional area to form a first cable and subsequently assembling and stranding at least one other set of the wires all of the same initial cross-sectional area, and of the same initial cross-sectional area as the wires of the first set, to form at least one other cable, wherein, while assembling at least one set of the wires for the formation of at least one of the cables, the wires are reduced in cross-sectional area in at least two rolling steps, each rolling step causing a reduction in cross-sectional area of the wires less than an amount at which brittleness of the wires is produced.
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Accused Products
Abstract
A method of producing a range of stranded aluminum cables of different gauge from aluminum wires all of the same cross-sectional area. The method involves assembling and stranding a first set of the wires to form a first cable and subsequently assembling and stranding other sets of the wires to form additional cables. Prior to the assembling of at least one set of the wires for the formation of at least one of the cables, the wires are reduced in cross-sectional area in at least two rolling steps, each rolling step causing a reduction in cross-sectional area less than an amount at which brittleness of the wires commences, preferably less than 40% reduction, preferably no more than 30% and ideally less than 25%. The invention also relates to an apparatus for carrying out the method.
22 Citations
45 Claims
- 1. A method of producing at least two stranded aluminum cables of different gauge from aluminum wires all of the same initial cross-sectional area, which comprises assembling and stranding a first set of the wires all of the same initial cross-sectional area to form a first cable and subsequently assembling and stranding at least one other set of the wires all of the same initial cross-sectional area, and of the same initial cross-sectional area as the wires of the first set, to form at least one other cable, wherein, while assembling at least one set of the wires for the formation of at least one of the cables, the wires are reduced in cross-sectional area in at least two rolling steps, each rolling step causing a reduction in cross-sectional area of the wires less than an amount at which brittleness of the wires is produced.
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24. A method of producing at least two stranded aluminum cables of different gauge from aluminum wires all of the same initial cross-sectional area, which comprises assembling and stranding a first set of the wires to form a first cable and subsequently assembling and stranding at least one other set of the wires to form at least one other cable, wherein, prior to the assembling of at least one set of the wires for the formation of at least one of the cables, the wires are reduced in cross-sectional area in at least two rolling steps, each rolling step producing no more than 40% reduction of the cross-sectional area of the wire immediately prior to each rolling step.
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25. A method of producing a stranded aluminum cable of desired final gauge, comprising the steps of:
- assembling a plurality of individual metal wires of the same initial cross-sectional area, rolling the wires in at least two rolling steps to reduce the initial cross-sectional area of the wires for compatibility with said desired final gauge of the cable, and stranding a cable from said wires of reduced cross-sectional area, wherein each rolling step causes a reduction in cross-sectional area of the wires less than an amount at which brittleness of the wires commences.
- View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
- 38. Apparatus for producing a stranded metal cable, comprising a supply of metal wires all of the same initial cross-sectional area, equipment for assembling the wires for cable formation, and a machine for stranding the wires into a cable, the apparatus comprising at least two adjustable rolling passes positioned between said supply and said stranding machine, each rolling pass being configured for rolling each wire to reduce the cross-sectional area of the wire by an amount less than that at which brittleness of the wires is caused.
Specification