An aluminum alloy wire is composed of an aluminum alloy. The aluminum alloy contains equal to or more than 0.005 mass % and equal to or less than 2.2 mass % of Fe, and a remainder of Al and an inevitable impurity. In a transverse section of the aluminum alloy wire, a surface-layer crystallization measurement region in a shape of a rectangle having a short side length of 50 m and a long side length of 75 m is defined within a surface layer region extending from a surface of the aluminum alloy wire by 50 m in a depth direction, and an average area of crystallized materials in the surface-layer crystallization measurement region is equal to or more than 0.05 m.sup.2 and equal to or less than 3 m.sup.2.

A multi-core cable for vehicle includes two power wires, two signal wires, two electric wires, and a sheath. The two power wires have the same size and are made of the same material. The two signal wires have the same size and are made of the same material, and a pair of the two signal wires is twisted and is configured a twisted pair of signal wires. The two electric wires have the same size and are made of the same material, and a pair of the electric wires is twisted and is configured as a twisted pair of electric wires. The two power wires, the twisted pair of signal wires and the twisted pair of electric wires are stranded.

A multi-core cable for vehicle includes two power wires, two signal wires, two electric wires, and a sheath. The two power wires have the same size and are made of the same material. The two signal wires have the same size and are made of the same material, and a pair of the two signal wires is twisted and is configured a twisted pair of signal wires. The two electric wires have the same size and are made of the same material, and a pair of the electric wires is twisted and is configured as a twisted pair of electric wires. The two power wires, the twisted pair of signal wires and the twisted pair of electric wires are stranded.

An apparatus to process a plurality of electrical wires as well as a method that uses the apparatus are indicated. The apparatus includes a feed device, a stationary holding device, a holding device that is non-stationary along a linear guiding direction, a non-stationary bundling device that is separate from the non-stationary holding device and a controller connected to a drive of the non-stationary bundling device. The stationary holding device and/or the non-stationary holding device are configured to twist the respectively held end of the wires; The controller controls the drive in such a way that a distance between a bundling segment of the non-stationary bundling device and the non-stationary holding device assumes a specified or a specifiable distance.

A method for manufacturing wire and cable products with a polymer cable component is provided. The method includes increasing the hardness of a polymer cable component in order to reduce compression and deformation of the cable components during manufacturing. In some instances, the hardness is temporarily increased prior to or during the process of creating twisted pair or during the cabling process.

A method of twisting electrical conductors includes cutting the conductors to size and transferring them to an actively displaceable twisting head and an oppositely positioned displaceable clamping device; clamping and tensioning the conductors between the twisting head and the clamping device by moving at least the twisting head away from the clamping device; activating the twisting head so that it rotates about an axis of rotation parallel to the clamped conductors while at the same time moving the twisting head towards the clamping device according to prescribed travel profile; applying a force, if need be of different magnitude, directed away from the twisting head to at least the clamping device, at least during the twisting process; and determining and evaluating a travel and/or force profile for the movable clamping device.

Provided is a twisted wire including a plurality of covered wires twisted together, each covered wire including a conductor and an insulator covering the periphery of the conductor, wherein the twisted wire satisfies Inequality (1): y<Ax/(z/500)+B (wherein x: a pitch length (mm) of the twisted wire, y: a collapsing rate (%) of the insulator, z: an elastic modulus (MPa) of the insulator, A: Constant A=1, and B: Constant B=11.5).

An apparatus and a method twists first and second single electrical wires to form a cable pair. The apparatus includes a main twisting device and a retwisting device with an stationary retwisting module and a retwisting module that is movable along a linear guide direction. Each of the retwisting modules also includes a transfer unit for transferring and holding an end of the twisted cable pair, wherein the transfer unit includes a first wire gripper for the first single electrical wire and a second wire gripper for the second single electrical wire, wherein a relative distance between the first wire gripper and the second wire gripper can be changed, typically programmably changed, according to a distance between the ends of the wires. At least one of the stationary retwisting module and the movable retwisting module is configured for the retwisting of the respective held cable pair.

A machine for manufacturing cables includes a rotor tube inside which is a motor. The machine also includes four rods attached to the tube. The rods are arranged so as to follow secant lines of the wall of the tube and include two mutually parallel plates. Each plate is connected to the four rods. The four rods are arranged such that they exert a force on the wall of the tube towards the inside of the tube in order to compensate for the effect of centrifugal force. The motor is positioned between the plates.

Twisting device for electrical conductors has at least one twisting head that rotates about an axis of rotation and a clamping device. The twisting head is movable in the direction of its axis of rotation toward the clamping device and is mounted on a first, motorized length compensation carriage, while the clamping device is mounted on a travel compensation carriage that is movable towards the length compensation carriage parallel to the axis of rotation of the twisting head. After the conductors have been cut to size and transferred to the twisting head and the clamping device, they are placed under tension. Then, the twisting head is activated to rotate about an axis of rotation parallel to the conductors while simultaneously moving towards the clamping device. Simultaneously, the clamping device is subjected to a force directed away from the twisting head and the travel/force profile for the clamping device is evaluated.