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An ultra-high temperature resistant fireproof cable and its manufacturing method

A fireproof cable, ultra-high temperature technology, applied in cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of not reducing the heat transmission of the sheath, high material and manufacturing costs, and lack of thermal conductivity, etc. The effect of material and manufacturing cost reduction, improved corrosion and weather resistance

Active Publication Date: 2017-07-18
上海新益特种电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology involved in this patent is complex, the cost of materials and manufacturing is high (mica and aluminum silicate refractory fibers are expensive), and the characteristics of superalloys are only high temperature resistance (that is, maintaining the mechanical properties of metal alloys at a certain temperature). It does not have the characteristics of low thermal conductivity, and it does not reduce the ability of heat transmission outside the sheath at all. Especially at high temperatures, the thermal conductivity of the alloy will increase sharply, and the superalloy sheath will become a good conductor of heat. In a fire or high temperature environment , the components inside the sheath will be quickly damaged by the heat conducted from the sheath
The technology involved in this utility model has serious design flaws

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. The conductor material is aluminum alloy or copper, and the conductor is obtained through melting, continuous casting and rolling, wire drawing, annealing and stranding. The cable core is made after insulation and cable formation.

[0027] 2. The base material of aluminum alloy sheath is in weight percentage: Fe 0.32%, Cu 0.08%, Mg 4.2%, Si 0.28%, Mn 0.21%, Zr 0.001%, the rest is aluminum, and the impurities are Ti, V, Cr The sum of elements is less than or equal to 0.01%.

[0028] 3. Put 99.7% of the industrial pure aluminum ingots into an intermediate frequency induction electric furnace to melt, and then add the intermediate alloys of other elements; heat preservation, stirring to remove impurities; refining and degassing; slagging, standing for 30 minutes, the temperature is controlled at Between 750°C and 800°C; analyze and adjust the composition in the furnace during the period;

[0029] 4. Add 2.8% by weight of 8μm Al at 800℃ 2 O 3 Tackifier, microcellular foaming ...

Embodiment 2

[0036] 1. The conductor material is aluminum alloy or copper, and the conductor is obtained through melting, continuous casting and rolling, wire drawing, annealing and stranding. The cable core is made after insulation and cable formation.

[0037] 2. The base material of the aluminum alloy sheath is in weight percentage: Fe 0.34%, Cu 0.09%, Mg 4.3%, Si 0.30%, Mn 0.22%, Zr 0.0015%, the rest is aluminum, and the impurities are Ti, V, Cr The sum of elements is less than or equal to 0.01%.

[0038] 3. Put 99.7% of the industrial pure aluminum ingots into an intermediate frequency induction electric furnace to melt, and then add the intermediate alloys of other elements; heat preservation, stirring to remove impurities; refining and degassing; slagging, standing for 30 minutes, the temperature is controlled at Between 750°C and 800°C; analyze and adjust the composition in the furnace during the period;

[0039] 4. Add 2.8% by weight of 10μm Al at 800℃ 2 O 3 Tackifier, microcellular fo...

Embodiment 3

[0046] 1. The conductor material is aluminum alloy or copper, and the conductor is obtained through melting, continuous casting and rolling, wire drawing, annealing and stranding. The cable core is made after insulation and cable formation.

[0047] 2. The base material of the aluminum alloy sheath is in weight percentage: Fe 0.35%, Cu 0.1%, Mg 4.5%, Si 0.32%, Mn 0.22%, Zr 0.002%, the rest is aluminum, and the impurities are Ti, V, Cr The sum of elements is less than or equal to 0.01%.

[0048] 3. Put 99.7% of the industrial pure aluminum ingots into an intermediate frequency induction electric furnace to melt, and then add the intermediate alloys of other elements; heat preservation, stirring to remove impurities; refining and degassing; slagging, standing for 30 minutes, the temperature is controlled at Between 750°C and 800°C; analyze and adjust the composition in the furnace during the period;

[0049] 4. Add 3.1% by weight of 10μm Al at 800℃ 2 O 3 Tackifier, microcellular foam...

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Abstract

The invention relates to an ultrahigh-temperature-resistant and fireproof cable and a manufacturing method thereof. The ultrahigh-temperature-resistant and fireproof cable is composed of a cable core and a sheath which sleeves outside the cable core. The sheath is made of nanometer micropore aluminum alloy material. A large number of independently sealed ellipsoidal nanometer micropores are evenly distributed in the material base. The diameter of the micropores is 25nm-51nm. The percentage of the total volume of the micropores is 85%-91% of the volume of the base. Compared with the cables in the prior art, the aluminum alloy material through nanometer micropore foaming processing is adopted to act as the metal sheath of the cable so that the structure is simple, material and manufacturing cost is greatly reduced, the mechanical property of the metal sheath is greatly enhanced under the premise of guaranteeing the basic application performance of the cable, the corrosion resistance and the weather resistance of the cable can be improved, the heat-insulating, high-temperature-resistant and flame-retardant capacity of the metal sheath can be substantially enhanced, the high-temperature-resistant and fireproof performance of the cable can be greatly enhanced and application of the cable is enabled to be safer.

Description

Technical field [0001] The invention relates to a cable, which is suitable for the field of power transmission and distribution line equipment, in particular to an ultra-high temperature resistant fireproof cable and a manufacturing method thereof. Background technique [0002] With the rapid economic and social development and the continuous improvement of people's lives, actual application requirements and customers are paying more and more attention to the safety of cables, and the requirements for comprehensive performance of cables are getting higher and higher. The fireproof performance of the cable is an extremely critical safety performance index. The existing fireproof cable has a complex structure, high cost and complex manufacturing process. How to simplify the process and improve the fire resistance of the cable while reducing material and production costs is of great significance. [0003] Chinese patent CN201741471U discloses a copper core conductor aluminum silicate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/295H01B7/22H01B13/24H01B13/22
CPCH01B7/22H01B7/295H01B13/22H01B13/24
Inventor 於国良吴振江范雷方
Owner 上海新益特种电缆有限公司
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