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A steel-cored aluminum stranded wire with good fatigue resistance

A steel-cored aluminum stranded wire, anti-fatigue technology, applied in the direction of conductors, insulated cables, electrical components, etc., can solve problems that have not been reported, and achieve the effect of simple operation process, good corrosion resistance, and excellent corrosion resistance and weather resistance

Active Publication Date: 2016-06-01
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the theoretical and applied research of electroless plating on the surface of ACSR without secondary galvanizing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. A steel core made of 7 strands of galvanized steel wires with a diameter of 2 mm is treated with a boiling NaOH solution with a mass fraction of 10% for 5 minutes to remove oil, washed with water and dried;

[0024] 2. Sand blast the surface with quartz sand, the main purpose is to remove rust and increase the fatigue resistance of the steel wire;

[0025] 3. Electroless plating of amorphous coating containing Ni-P. Most commonly used: nickel sulfate (30g / L), sodium hypophosphite (36g / L), citric acid (15g / L), lactic acid (25ml / L), sodium fluoride (1g / L), succinic acid (5g / L), propionic acid (5ml / L), temperature 80~90℃, pH control at 5, plating for 2h.

[0026] 4. Wash and dry.

[0027] 5. The steel-cored aluminum stranded wire has a diameter of 2.4mm, 16 strands in the outer layer and 10 strands in the inner layer, hinged on the steel core with the above-mentioned Ni-P amorphous coating. Treat with boiling NaOH solution with a mass fraction of 10% for 5 minutes t...

Embodiment 2

[0035] 1. A steel core made of 7 strands of galvanized steel wires with a diameter of 2 mm is treated with a boiling NaOH solution with a mass fraction of 10% for 5 minutes to remove oil, washed with water and dried;

[0036] 2. Sand blast the surface with quartz sand, the main purpose is to remove rust and increase the fatigue resistance of the steel wire;

[0037] 3. Electroless plating of amorphous coating containing Ni-P-PTFE. Most commonly used: nickel sulfate (25g / L), sodium hypophosphite (25g / L), citric acid (15g / L), lactic acid (25ml / L), potassium iodate (0.05mg / L), dialkylbenzene Sodium sulfonate (0.05mg / L), PTFE particles (5~8g / L), temperature 80~90℃, pH controlled at 4.5~5.0, stirring and plating for 2h.

[0038] 4. Wash and dry.

[0039] 5. ACSR is made of 26 aluminum strands with a diameter of 2.4mm and the above-mentioned galvanized steel wire with Ni-P-PTFE amorphous coating; the aluminum wire is wound in two layers, and the outer layer 16 strands, 10 strands...

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Abstract

The invention discloses corrosion-proof steel-cored aluminum strand with good fatigue resistance performance and a preparation method thereof, wherein the surface of the corrosion-proof steel-cored aluminum strand comprises an Ni-P amorphous coating. Each of the steel core and the aluminum wire of the steel-cored aluminum strand comprises an Ni-P amorphous plating through chemical plating, an amorphous corrosion-proof protection layer with dense surface has good fatigue resistance performance and can be well combined with aluminum and galvanized steel, the atmosphere corrosion resistance ability is strong, the problem of aging is avoided, and vibration would not generate a crack in the Ni-P plating. The manufacturing technique is simple and good for popularization.

Description

technical field [0001] The invention relates to a high-corrosion-resistant steel-cored aluminum stranded wire with good fatigue resistance and a Ni-P amorphous coating on the surface and a preparation method thereof. Background technique [0002] The steel-cored aluminum stranded wire is a steel core made of galvanized steel wires or galvanized steel wires hinged at the core, and the outer layer is composed of one or several layers of articulated aluminum stranded wires. The aluminum used in aluminum strands is of high purity. According to the national standard GB1179-2008, the aluminum strands contain no more than 0.13% silicon, no more than 0.16% iron, no more than 0.26% silicon plus iron, and no more than 0.01 sum of titanium, vanadium, manganese and chromium. %, a dense passivation film will be formed on the surface, and it will be very firmly combined with the aluminum substrate. It is because of this natural oxide film that the performance of aluminum and its alloys is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/22H01B7/28H01B13/22H01B13/30H01B13/02C23C18/36
Inventor 林德源陈云翔庄建煌邵艳群张文洪毅成江祖瑄
Owner STATE GRID CORP OF CHINA