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A steel-cored aluminum stranded wire coated with a high corrosion-resistant ni‑p amorphous coating on the surface

A steel-cored aluminum stranded wire and amorphous coating technology, applied in the field of steel-reinforced aluminum stranded wire, can solve problems such as poor anti-aging performance and increased production costs, and achieve excellent corrosion resistance and weather resistance, good corrosion resistance, and improved The effect of corrosion resistance

Active Publication Date: 2017-03-08
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the coatings used to improve the surface condition of steel-cored aluminum strands have the following problems: the coating has poor anti-aging performance. The service life under action is 3-5 years
The secondary galvanizing process undoubtedly increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. The steel-cored aluminum stranded wire is made of 26 aluminum strands with a diameter of 2.4mm and 7 galvanized steel wires with a diameter of 2mm in the center; the aluminum wires are wound in 2 layers, with 16 outer layers and 10 inner layers. The strands were treated with boiling 10% NaOH solution for 5 minutes to remove oil and dense oxides on the surface, washed with water and dried;

[0025] 2. The surface is sandblasted with quartz sand, the main purpose is to remove surface oxides and increase the fatigue resistance of aluminum;

[0026] 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 85℃, pH control at 5, plating for 2h.

[0027] 4. Wash, dry and set aside.

[0028] Detection:

[0029] The aluminum steel core stranded wire with Ni-P amorphous co...

Embodiment 2

[0032] 1. The steel-cored aluminum stranded wire is made of 26 aluminum strands with a diameter of 2.4mm and 7 galvanized steel wires with a diameter of 2mm in the center; the aluminum wires are wound in 2 layers, with 16 outer layers and 10 inner layers. The strands were treated with boiling 10% NaOH solution for 5 minutes to remove oil and dense oxides on the surface, washed with water and dried;

[0033] 2. The surface is sandblasted with quartz sand, the main purpose is to remove surface oxides and increase the fatigue resistance of aluminum;

[0034] 3. Amorphous coating of electroless 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 (6g / L), temperature 85 ℃, pH control at 4.5, stirring and plating for 2h.

[0035] 4. Wash, dry and set aside.

[0036] Detection:

[0037] The aluminum steel core stranded ...

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Abstract

The invention provides an aluminum cable steel reinforced plated with a high corrosion resistance Ni-P amorphous coating on the surface. A preparation method of the aluminum cable steel reinforced comprises the following steps of carrying out oil removal, sand blasting or shot blasting of aluminum cable steel reinforced, and chemically plating a Ni-P amorphous coating. After The entire surface of the aluminum cable steel reinforced is chemically plated with the Ni-P amorphous coating, a surface-compact corrosion-resistant protecting layer can be obtained; the manufacturing process technique is simple, the chemical plating can be carried out after oil and rust removal by using NaOH and the sand blasting or shot blasting treatment and the secondary zinc immersion process is not needed; different chemical plating solutions can be prepared according to the need and products with different corrosion resistances are obtained; the corrosion resistance of the aluminum cable steel reinforced can be increased through adding PTFE into the plating solutions.

Description

technical field [0001] The invention relates to an aluminum-steel stranded wire coated with a highly corrosion-resistant Ni-P amorphous coating on the surface. 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 stable in conventional environments and is not easy to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36H01B13/22H01B7/28H01B9/00
Inventor 洪毅成林德源陈云翔邵艳群张明芳江祖瑄
Owner STATE GRID CORP OF CHINA