Preparation method of anti-friction and wear-resistant composite coating for transmission line suspension clamp

A technology for hanging wire clips and transmission lines, which is applied in the direction of coating, cable installation, and cable suspension devices, etc. It can solve the problems of wire wear and other problems, and achieve the effects of improving service life, preventing corrosion damage, and reducing rapid wear

Active Publication Date: 2018-09-28
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hard coating has high hardness and high wear resistance, it is easy to cause more serious wear to the wire while being wear-resistant.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of aluminum-based self-lubricating coating sprayed on wire rods: the selected raw material is commercially available electrical pure aluminum wire (aluminum content ≥ 99.9 wt.%), with a diameter of 3 mm. Using a pressure sandblasting machine, use No. 24 brown corundum sand as the abrasive to clean and roughen the surface of each part of the XGU-3 suspension wire clamp. The surface cleanliness is Sa3.0 and the surface roughness is Ra8.5μm. Use bipolar arc wire spraying equipment to atomize the aluminum wire and spray it on the surface of each part of the XGU-3 suspension clamp. Spray the coating thickness to 220μm, adjust the distance from the nozzle to the workpiece to 100mm, spray the current to 160A, and test the coating porosity of the sprayed process sample by the gray scale method to 8.5%. The coating bonding strength of the process sample tested by the pulling method is 11.3MPa.

[0034] Carry out carbon powder impregnation process on the surface of t...

Embodiment 2

[0038] Prepare the self-lubricating coating of wire rod spraying aluminum-copper base: the raw materials selected are commercially available electrical pure aluminum wire (aluminum content≥99.95wt.%) and T1 electrolytic copper wire (aluminum content≥99.98wt.%), The diameter specification is 3mm. Using a pressure sandblasting machine, use No. 24 brown corundum sand as the abrasive to clean and roughen the surface of each part of the XGU-3 suspension wire clamp. The surface cleanliness is Sa3.0 and the surface roughness is Ra8.5μm. Using bipolar electric arc wire spraying equipment, one aluminum wire and one copper wire are respectively sent into the nozzle as electrodes, and sprayed onto the surface of each part of the XGU-3 suspension wire clamp after atomization. Spray the coating thickness to 280μm, adjust the nozzle-to-workpiece distance to 150mm, spray the current to 210A, and use the gray scale method to test the coating porosity of the sprayed process sample to 10.5%. T...

Embodiment 3

[0043] Preparation of copper-based self-lubricating coating sprayed on wire rods: the selected raw material is commercially available T1 electrolytic copper wire (aluminum content ≥ 99.98 wt.%), with a diameter of 3 mm. Using a pressure sandblasting machine, use No. 24 brown corundum sand as the abrasive to clean and roughen the surface of each part of the XGU-3 suspension wire clamp. The surface cleanliness is Sa3.0 and the surface roughness is Ra8.5μm. Using bipolar electric arc wire spraying equipment, two copper wires are sent into the nozzle as electrodes, atomized and sprayed onto the surface of each part of the XGU-3 suspension wire clamp. Spray the coating thickness to 380μm, adjust the distance from the nozzle to the workpiece to 85mm, and the spraying current to 260A. The coating porosity of the sprayed process sample is tested by the gray scale method to be 14.3%. The coating bonding strength of the process sample tested by the pulling method is 13.5MPa.

[0044] C...

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Abstract

The invention discloses a preparation method of an antifriction and abrasion-resistant composite coating for a suspension wire clamp of an electric transmission line. The method comprises the steps that any one or two types of aluminum wires and copper wires are adopted as coating raw materials; a high-speed electric arc spraying gun is adopted for spraying a porous coating with the porosity ranging from 5% to 15% on the surface of each wire clamp component obtained after surface cleaning and roughening treatment; then a carbon source is infiltrated into the porous coating through a solvent method; and then, after curing and polishing are conducted, the antifriction and abrasion-resistant composite coating is obtained. By means of the coating prepared through the method, rapid abrasion occurring among the components of the wire clamp of the electric transmission line as well as between the components and a wire can be remarkably alleviated; the service life of the suspension wire clamp of the electric transmission line is prolonged; and meanwhile, hard abrasion damage to the wire caused by the wire clamp is prevented.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a method for manufacturing electric fittings and a surface coating. Background technique [0002] The transmission line clamp is one of the main components for connecting, fixing and supporting overhead conductors. Under the action of the environment (wind force, icing, rainfall, temperature changes, etc.), fixed-frequency vibration of towers, wire vibration, etc., the wire clip and the wire are in a permanent relative motion state. Over time, the wire and the wire clip are worn and damaged Causes both to appear depleted. [0003] At present, the clamps used in overhead transmission lines are mostly made of steel materials with surface hot-dip galvanized treatment. The hot-dip galvanized layer on the surface is relatively soft, and it will be transformed into wear between the steel substrate and the aluminum conductor or the steel substrate and the steel substrate aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/131C23C4/18C09D7/61H02G7/05
CPCC09D7/61C23C4/18H02G7/053
Inventor 李辛庚王晓明李华东郭凯傅敏樊志彬荆象阳李勇
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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