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Copper-clad steel/copper grounding grid heat release welding flux with high safety

An exothermic flux, high safety technology, applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., to achieve the effect of long reaction cycle, uniform redox process and improved safety

Inactive Publication Date: 2010-02-03
CHINA ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the simple pursuit of high heat, uneven flux powder mixing, or flux composition, it is difficult to avoid the phenomenon of molten metal droplet splashing during welding
From the ignition of the flint gun to the completion of the flux combustion, the whole process basically does not exceed 1 sec

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-safety copper-clad steel / copper grounding grid exothermic flux, the components and their weight percentages are:

[0024] Copper Oxide 45%

[0025] Aluminum powder 8%

[0026] Copper Shavings 35%

[0027] Fluorite Dust 5%

[0028] Metal tin powder 3%

[0029] Alloy powder balance.

Embodiment 2

[0031] A high-safety copper-clad steel / copper grounding grid exothermic flux, the components and their weight percentages are:

[0032] Copper Oxide 50%

[0033] Aluminum powder 10%

[0034] Copper Shavings 35%

[0035] Fluorite Dust 2%

[0036] Metal tin powder 2%

[0037] Alloy powder balance.

Embodiment 3

[0039] A high-safety copper-clad steel / copper grounding grid exothermic flux, the components and their weight percentages are:

[0040] Copper Oxide 60%

[0041] Aluminum powder 15%

[0042] Copper filings 22%

[0043] Fluorite Dust 2%

[0044] Metal tin powder 1%

[0045] Alloy powder balance.

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Abstract

The invention provides copper-clad steel/copper grounding grid heat release welding flux with high safety, belonging to the field of metal welding. The prior heat release welding flux used for weldingcopper-clad steel has problems of vigorous and uneven reaction, great splashing, great welding hazard and the like. The heat release welding flux provided in the invention comprises the following components according to the following weight percentage: 45-65% of copper oxide, 8-15% of metal aluminium powder, 22-35% of metal copper cuttings, 2-5% of fluorspar powder, 1-3% of metal tin powder and the balance alloy powder. When welding, the heat release welding flux of the invention has even reaction, no splashing, long reaction cycle and safe welding.

Description

technical field [0001] The invention belongs to the field of metal welding, and in particular relates to a high-safety copper-clad steel / copper grounding grid exothermic flux. Background technique [0002] With the steady progress of economic development, the demand for energy is increasing year by year, and the process of power construction is gradually accelerating. The development of power construction is reflected in the dual development of infrastructure construction quantity and quality. [0003] In the field of power grid grounding, people pay more and more attention to the reliability of the grounding grid. The widely used galvanized steel grounding grid has low cost, but poor corrosion resistance. Frequent excavation and maintenance are required in severely corroded areas, which increases subsequent maintenance costs. Therefore, copper or copper-clad steel grounding grids have been gradually replaced in many key projects. Galvanized steel ground grid. [0004] Due...

Claims

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Application Information

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IPC IPC(8): B23K35/34
Inventor 韩钰聂京凯马光陈玉成李现兵陈新徐德录王立全
Owner CHINA ELECTRIC POWER RES INST
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