SU62296A1 - A method of making an electric cable - Google Patents

Description

METHOD OF MANUFACTURING ELPKTRICHRSK GM

The existing manufacturing process at cable plants for the production of power cables is a series of BCJI a sous, attributes: 1 s; 1 units, namely:

1. The copper Nwolok is annealed in pastes. In the first case, due to the fact that the metal 1e nrn wires are subjected to periodic heating (for three times a day) until dark); tours 750–800 °, their average operating time is a maximum of a year, WTO is a time as coils, not reducible ;; After each annealing of the coil, ibbsd: 1ms rectifier, since the oi in the annealing process o) is about i

Wire annealing in coils has one; which requires the posthumous OHi .eii of slumbering Lronolsky ia. The process of rewinding and milling an otzhshinoy irsv-olok entails B zt zh;; the wires, i.e., its mechanical and electrical properties deteriorate.

2. The firing of copper wire but compaction of the cores on coils with a weight of up to 160 kg is very irregular. The copper body, i.e. 300-320 °, is needed for the recrystallization of copper, but the coil with the wire is very sick and, in order to reduce the time it takes, the upper turns are heated up to 700-750 °. This cost is for the consumption of electricity (or electricity). At such a high annealing temperature, the metal 1 body of the squeezing furnace 6 iiCTro goes out of order.

3. When twisting the cores of 13 annealed wires on the nan1, the wires are drawn together, especially a. 1, diameter оке;

JVb П2: 9-: 2лглгг .. Wire drawing leads to the non-uniformity of the mechanical and electrical properties of the cable along the length.

4.When compacting the cores in the compacting rollers, “carbonic wire” occurs. The relative elongation of the copper wire after falling up falls from 32–3 (3% to 6–8%. The conductivity of copper decreases by 2, h – 3%, the vein becomes extremely rigid and elastic.

The preliminary twisting of sector and segment veins is extremely: it is hard because of the elasticity of the veins due to the fretting. Of these csg images, sometimes the upper level is applied without compaction.

5. With the purpose of limiting the magnification of the yoke of the wires of the conductor; The filling phyikeite (y; L, i;.: iieiii H) of the veins is chosen small, which does not give the EDSMC a marginal hmenyaphen gabgritov veins, and therefore,

It does not give even a fair amount of scarce materials, such as: sgitsa, cable paper, etc.

The proposed method provides the possibility of disrupting all the aforementioned shortcomings and consists in the following:

one. . single or aluminum; the first and the southern wires are twisted and made flesh in a hard form.

2. The twisted and compacted core is annealed directly onto the core; .l} 1C-izodirovoy your car in a special furnace with a neutral atmosphere). The furnace is located between the torsion m. Lantern and insulating G magoso.motchika.mi.

For annealing, a furnace with indirect or non-hindered heating of electrically m-teksm with the use of neutral gas or can be applied: 1 s intermittent | sr.ty.ty П | 1ед: 1сттительп the furnace with heating electrically m current,: photocap, directly to them by annealing. His vein. In this case, the temperature of the annealing at 400 ° liter, em is sufficient, and the time: I am heating and annealing, with sufficient plc, the current will be 2-5 seconds. In order to ensure that the fast o.cooled vein of the furnace is fed, the cooling chamber is viewed.

PROPOSITION. MEETS

The method of making an electric cable, I distinguish HI, and with, that the copper or aluminum wires no; i that form the cable cores are twisted and rolled up, and unwired, then they are annealed for passage in furnaces (c} | ).