Strong-corrosion-resistance stainless steel encased grounding grid thermit welding powder

A corrosion-resistant, stainless-steel technology, applied in the direction of aluminothermic welding equipment, welding medium, welding equipment, etc., can solve the problems of slag inclusion, easy generation of pores in stainless steel clad steel, thermal cracking and corrosion resistance, etc., to increase corrosion resistance And mechanical properties, not easy to slag inclusion, good corrosion resistance

Active Publication Date: 2019-05-17
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a kind of thermite welding powder of strong corrosion resistance stainless steel-clad steel grounding grid, which solves the defects such as air holes, slag inclusions, hot cracks and poor corrosion resistance of thermite welding powder welding stainless steel-clad steel. The problem of reducing the connection cost of the new grounding material of stainless steel clad steel, and its preparation is simple

Method used

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  • Strong-corrosion-resistance stainless steel encased grounding grid thermit welding powder

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preparation example Construction

[0026] The preparation method of described copper-manganese-nickel alloy comprises the following steps:

[0027] Step 1. Put copper, nickel and manganese raw materials into the crucible, put them in a smelting furnace and smelt them under the protection of argon;

[0028] Step 2. After the smelting is completed, the smelted raw materials flow to the atomization chamber through the bottom guide tube of the crucible for gas-water atomization treatment. Disperse fine liquid particles and obtain the desired metal powder after cooling.

[0029] Vacuum atomization can effectively reduce the content of nitrogen, hydrogen and oxygen in metal powder, and ensure the welding quality of thermite welding powder.

[0030] When using an ignition agent to ignite the thermite powder of the present invention, the thermite powder and the ignition agent are used at a ratio of 75-90:1.

Embodiment 1

[0033] A kind of thermite welding powder of strong corrosion resistance stainless steel-clad steel grounding grid, said thermite welding powder is formed by uniformly mixing the following components by weight: 35 parts of copper oxide, 11 parts of cuprous oxide, and 12 parts of aluminum powder , 21 parts of copper powder, 12 parts of copper-phosphorus alloy powder, 2 parts of zinc-aluminum alloy, 1 part of copper-manganese-nickel alloy, 2 parts of fluorite powder, 2 parts of borax, and 2 parts of alloy additive powder.

Embodiment 2

[0035] A kind of thermite welding powder of strong corrosion resistance stainless steel-clad steel grounding grid, said thermite welding powder is formed by uniformly mixing the following components by weight: 44 parts of copper oxide, 13 parts of cuprous oxide, and 11 parts of aluminum powder , 18 parts of copper powder, 5 parts of copper-phosphorus alloy powder, 3 parts of zinc-aluminum alloy, 2 parts of copper-manganese-nickel alloy, 2 parts of fluorite powder, 1 part of borax, and 1 part of alloy additive powder.

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Abstract

The invention provides strong-corrosion-resistance stainless steel encased grounding grid thermit welding powder. The thermit welding powder is formed by evenly mixing, by weight, 30-50 parts of copper oxide, 5-20 parts of cuprous oxide, 8-15 parts of aluminum powder, 18-28 parts of copper powder, 3-12 parts of a copper-phosphorus alloy, 1-4 parts of a zinc-aluminum alloy, 0.5-2.5 parts of a copper-manganese-nickel alloy, 2-5 parts of fluorite, 1-2 parts of borax and the balance alloy additive powder. The copper-manganese-nickel alloy is prepared in a vacuum atomization manner, the nitrogen, hydrogen and oxygen content in metal powder can be effectively reduced through vacuum atomization, and the thermit welding powder welding quality can be ensured. Pore generation, slag inclusion and hottearing are not likely to be caused to the prepared thermit welding powder when stainless steel encased novel grounding grid materials are welded, the corrosion resistance is good, and the connectioncost of the stainless steel encased novel grounding grid materials is reduced.

Description

technical field [0001] The invention relates to the technical field of aluminothermic welding powder, in particular to an aluminothermic welding powder of strong corrosion resistance stainless steel clad steel grounding grid. Background technique [0002] The concept of grounding is broad. In the power system, it usually refers to connecting a certain metal of the power system or electrical equipment to the electrode through a metal grounding wire. The purpose is to connect any part of the power system or electrical equipment with the earth (soil). The grounding device of the power system or electrical equipment is mainly composed of a grounding body and a grounding wire. The grounding body is a metal that is in direct contact with the soil, and the grounding wire is It is the wire connecting the electrical equipment and the grounding body; [0003] Since the reform and opening up, with the rapid development of my country's economy, the demand for power supply has risen sha...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/36B23K35/40B23K23/00
Inventor 龙伟民李秀朋钟素娟沈元勋裴夤崟
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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