Civil aluminum alloy conductor, wiring and preparation method thereof

A technology of aluminum alloy conductors and aluminum alloy wires, applied in the directions of metal/alloy conductors, cable/conductor manufacturing, conductors, etc., can solve the problem of limiting the application range of aluminum or aluminum alloys, short, no more than 30 years at most, not civil wiring Development trends and other issues, to achieve the effect of light weight, long service life and low cost

Active Publication Date: 2011-01-05
于贵良 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The provisions of this standard are based on the summary of the actual situation of aluminum conductors, which greatly limits the application range of aluminum or aluminum alloys, and is not conducive to the implementation of copper-saving aluminum alloys.
[0004] Although copper conductor wiring has many characteristics superior to aluminum wiring, copper wiring also has many shortcomings. First, the cost of copper wiring is too high due to the shortage of copper resources in the country; The basics are PVC insulation and PVC sheath, such as BV and BVV. Although PVC materials have certain flame retardant properties, because PVC contains chlorine, the hydrogen chloride gas released during combustion is harmful to the human body and buildings. It does not meet the requirements of environmental protection, and the service life of PVC materials is short, no more than 30 years. PVC copper conductor wiring is not a favorable development trend for civil wiring.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A civilian aluminum alloy conductor, the composition ratio of the aluminum alloy wire is:

[0033] 0.3-1.5% iron, such as 0.4%, 0.5%, 0.7%, 0.9%, 1.15%, 1.3%, 1.4%, 0.001-0.02% boron, such as 0.004%, 0.009%, 0.012%, 0.018% %, 0.019%, 0.01-1% mixed rare earth elements, such as 0.05%, 0.07%, 0.1%, 0.5%, 0.6%, 0.9%, not more than 0.1% silicon, the rest is aluminum and unavoidable impurities .

[0034] In the above technical solution, the total weight percentage content of heavy metals such as vanadium, titanium, chromium and manganese in the alloy is ≤0.01%, and the total weight percentage content of impurity elements is ≤0.2%.

[0035] A preparation method of the civil aluminum alloy conductor, comprising the following steps:

[0036]1) Heat and melt the aluminum ingot with a purity of not less than 99.70%, keeping the temperature at 720-780°C, for example, 740°C, 760°C, and then add aluminum-iron master alloy, aluminum-boron master alloy and aluminum rare earth master ...

Embodiment 2

[0041] A civil aluminum alloy wiring, in which the conductor of the civil aluminum alloy described in Embodiment 1 is extruded with an insulating material, and the insulating material is a treated silane cross-linked polyethylene material.

[0042] A manufacturing method of the civil aluminum alloy wiring, comprising the following steps:

[0043] 1) Heat and melt the aluminum ingot with a purity of not less than 99.70%, keeping the temperature at 720-780°C, for example, 740°C, 760°C, and then add aluminum-iron master alloy, aluminum-boron master alloy and aluminum rare earth master alloy , the composition of the intermediate alloy is based on the composition requirements of the final alloy, and the burning loss is properly controlled, smelted to make the composition meet the requirements (continuously carry out pre-furnace analysis during the smelting period until the composition meets the requirements), cast, and make aluminum alloy cast bars;

[0044] 2) Import the aluminum ...

Embodiment 3

[0050] Add aluminum ingots with a purity of 99.70% into the shaft furnace, heat and melt to keep the temperature at 720-760°C, then add aluminum-iron master alloys, aluminum-boron master alloys and aluminum-rare-earth master alloys into the furnace, add refining agents, and Stir for refining and slag removal. After standing for 30 minutes, take a sample for analysis before the furnace, so that the weight percentage of each metal element in the melt is: 0.35% iron, 0.005% boron, 0.1% rare earth, and the rest is Aluminum and unavoidable impurities. Cast into aluminum alloy cast bars in the casting machine. The aluminum alloy cast strip is introduced into the rolling mill, the temperature of the introduction into the rolling mill is 450-480°C, and the final rolling temperature is 250-280°C.

[0051] The rolled aluminum alloy rod is processed by cold drawing, and the drawing is processed so that the cross section is less than 6mm 2 aluminum alloy wire. The aluminum alloy wire i...

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Abstract

The invention provides a method for manufacturing civil aluminum alloy wiring, belonging to the technical field of wire and cable design and manufacture. The manufacture method comprises the following steps: adding aluminum ingots, aluminum-iron master alloy, aluminum-boron master alloy and aluminum-rare earth master alloy into a shaft furnace; casting into a cast strip after smelting; rolling into an aluminum alloy rod through a rolling mill; preparing an aluminum alloy filament by the aluminum alloy through cold drawing; annealing, and performing extruded insulation on the aluminum alloy wire, wherein the insulation material is silane-crosslinked polyethylene; adding low halogen or halogen-free flame retardant during insulation; and performing warm water crosslinking or steam crosslinking treatment on the aluminum alloy wiring after the extruded insulation is completed. The aluminum alloy wiring has excellent conductivity, tensile property and bending performance; and the wire has better flame retardant performance and longer service life.

Description

technical field [0001] The invention belongs to the field of wire and cable manufacturing process design, and in particular relates to a civil aluminum alloy conductor, wiring and a preparation method thereof. Background technique [0002] Today's civil, commercial and industrial wire and cable conductors, especially civil wiring, use copper conductors. In the 1980s and 1990s, due to the high copper price and the tight copper resources, the country proposed the economic policy of using aluminum to save copper. At that time, aluminum conductor wires and cables were relatively common and widely used, but as time went by, people In the process of use, it is found that there are various situations in the use of pure aluminum conductors. Among them, the common ones are that the pure aluminum conductors are easy to crack or break during the bending process, and are prone to oxidation and electrochemical corrosion, especially in The connection head part, and the direct connection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B7/02H01B7/04H01B13/00H01B13/14
Inventor 林泽民
Owner 于贵良
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