Thermofusion welding agent for welding copper covered steel grounded screen

A technology of hot-melt welding and grounding mesh, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of high welding heat, low ignition efficiency, high welding noise, etc., and achieve corrosion resistance. Good, high joint strength, the effect of improving strength

Active Publication Date: 2009-04-22
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hot-melt flux for copper-clad steel grounding grid welding to overcome the defects of low ignition efficiency, poor corrosion resistance, high welding heat, and high welding noise in existing hot-melt fluxes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The hot-melt flux for copper-clad steel grounding grid welding is composed of hot-melt solder and ignition agent, and the mass ratio of hot-melt solder to ignition agent is: 50:1;

[0031] The composition and weight percentage of hot-melt solder are:

[0032] Copper oxide powder (100 mesh) 30%

[0033] Metal aluminum powder (100 mesh) 8%

[0034] Metal copper powder (60 mesh) 35%

[0035] Fluorite powder (100 mesh) 7%

[0036] Tin powder (100 mesh) 10%

[0037] Nickel powder (particle size 2 ~ 3 microns) 10%

[0038] The composition and weight percentage of igniter are:

[0039] Potassium permanganate (100 mesh) 15%

[0040] Copper oxide powder (100 mesh) 35%

[0041] Metal aluminum powder (100 mesh) 10%

[0042] Metal magnesium powder (100 mesh) 25%

[0043] Red phosphorus powder (100 mesh) 15%.

Embodiment 2

[0045] The hot-melt flux for copper-clad steel grounding grid welding is composed of hot-melt solder and igniter, and the mass ratio of hot-melt solder to igniter is 55:1;

[0046] The composition and weight percentage of hot-melt solder are:

[0047] Copper oxide powder (200 mesh) 40%

[0048] Metal aluminum powder (200 mesh) 11%

[0049] Metal copper powder (60 mesh) 20%

[0050] Fluorite powder (100 mesh) 10%

[0051] Tin powder (100 mesh) 4%

[0052] Nickel powder (particle size 2-3 microns) 5%

[0053] The composition and weight percent thereof of igniter are:

[0054] Potassium permanganate (100 mesh) 10%

[0055] Copper oxide powder (200 mesh) 40%

[0056] Metal aluminum powder (200 mesh) 15%

[0057] Metal magnesium powder (100 mesh) 25%

[0058] Red phosphorus powder (100 mesh) 10%

Embodiment 3

[0060] The hot-melt flux for copper-clad steel grounding grid welding is composed of hot-melt solder and igniter, and the mass ratio of hot-melt solder to igniter is 52:1;

[0061] The composition and weight percentage of hot-melt solder are:

[0062] Copper oxide powder (150 mesh) 35%

[0063] Metal aluminum powder (150 mesh) 10%

[0064] Metal copper powder (60 mesh) 30%

[0065] Fluorite powder (100 mesh) 9%

[0066] Tin powder (100 mesh) 9%

[0067] Nickel powder (particle size 2 ~ 3 microns) 7%

[0068] The composition and weight percent thereof of igniter are:

[0069] Potassium permanganate (100 mesh) 14%

[0070] Copper oxide powder (150 mesh) 36%

[0071] Metal aluminum powder (150 mesh) 10%

[0072] Metal magnesium powder (150 mesh) 28%

[0073] Red phosphorus powder (150 mesh) 12%

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Abstract

The invention provides a hot-melt welding flux for copper-clad steel grounding net welding, which belongs to the field of metal welding. The prior hot-melt welding flux for copper-clad steel grounding net welding has the problems of violent reaction, huge heat release, high noise, poor corrosion resistance and the like. The hot-melt welding flux consists of hot-melt solder and detonator, wherein the hot-melt solder consists of the following materials in weight percentage: 30 to 40 percent of copper oxide powder, 8 to 11 percent of metal aluminum powder, 20 to 35 percent of metal copper powder, 5 to 10 percent of fluorite powder, 4 to 10 percent of tin powder and 5 to 10 percent of nickel powder. The hot-melt welding flux has the advantages of proper reaction speed, low heat release, low noise, good corrosion resistance and the like.

Description

technical field [0001] The invention belongs to the field of metal welding, and in particular relates to a hot-melt solder, an ignition agent and a hot-melt solder composed of the hot-melt solder and the ignition agent for welding copper-clad steel grounding grid joints. Background technique [0002] With the continuous development of the national economy, the demand for electricity increases, the pace of power grid construction is accelerated, and the number of new lines continues to increase. In the transmission network, the grounding devices of various substations, transmission towers, power plants, etc. are being widely valued by everyone. The quality of their engineering is not only related to the operation safety of major equipment in the power grid, but also related to the personal safety of power operators. As a kind of grounding material with good corrosion resistance and low cost, copper clad steel composite material is being widely promoted in the application of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36
Inventor 韩钰聂京凯李现兵陈玉成马光陈新徐德录王立全
Owner CHINA ELECTRIC POWER RES INST
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