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Welding electrode for austenite-bainite steel turnout welding repair and preparation method thereof

A technology of Aubeite steel and electric welding rod, which is applied in the field of Aubeite steel turnout repair welding electrode and its preparation, which can solve the problems of wear of turnout parts, increase of freight volume, high labor intensity of turnout, etc., and achieve good mechanical properties Effect

Active Publication Date: 2019-01-18
CHONGQING DINGYU ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the total length of my country's high-speed rail lines has reached 22,000 kilometers, and the freight volume has also increased greatly, which increases the wear and tear of railway lines and operating costs, especially the parts of turnouts are often severely worn, and the labor intensity of replacing turnouts is high. The cost of raw materials and turnouts Therefore, research and development of special welding electrodes for turnout welding repair has become a top priority

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] The composition of the coating is: 50kg of marble, 26kg of fluorite, 3kg of titanium dioxide, 7kg of manganese metal, 4kg of chromium metal, 3kg of rutile, 4kg of ferromolybdenum, 0.2kg of sodium carboxymethyl cellulose, 0.6kg of soda ash, 1.5kg of ferrovanadium, nickel Powder 0.6kg, ferrosilicon 8kg and graphite 0.7kg.

[0103] After mixing the powders of each component in the above coating evenly, add 8.5kg of potassium sodium water glass with a concentration of 43° and mix evenly, take the 50kg mixture after mixing evenly, and send it to the plodder to wrap 100kg of welding core (the specification is Φ4 .0), after baking at 80°C for 4 hours at a low temperature and then at 380°C for 1.5 hours at a high temperature, an electric welding electrode for Aubicite steel turnout repairing was obtained.

[0104] The electrode produced according to the above process has smooth surface, high yield, stable eccentricity, stable arc during welding, good slag removal, excellent ele...

Embodiment 2

[0117] The composition of the coating is: marble 51kg, fluorite 25kg, titanium dioxide 3.5kg, metal manganese 6.8kg, metal chromium 3.9kg, rutile 2.8kg, molybdenum iron 4.2kg, carboxymethylcellulose sodium 0.2kg, soda ash 0.6kg, vanadium Iron 1.4kg, nickel powder 0.7kg, ferrosilicon 8.5kg and graphite 0.67kg.

[0118] After mixing the powders of each component in the above coating evenly, add 8.5kg of potassium sodium water glass with a concentration of 43° and mix evenly, take the 50kg mixture after mixing evenly, and send it to the plodder to wrap 100kg of welding core (the specification is Φ4 .0), after baking at 80°C for 4 hours at a low temperature and then at 380°C for 1.5 hours at a high temperature, an electric welding electrode for Aubicite steel turnout repairing was obtained.

[0119] The electrode produced according to the above process has smooth surface, high yield, stable eccentricity, stable arc during welding, good slag removal, excellent electrode operation p...

Embodiment 3

[0132] The composition of the coating is: marble 52kg, fluorite 24kg, titanium dioxide 4kg, metal manganese 6.6kg, metal chromium 3.8kg, rutile 2.6kg, molybdenum iron 4.3kg, carboxymethyl cellulose sodium 0.2kg, soda ash 0.6kg, vanadium iron 1.3kg, nickel powder 0.7kg, ferrosilicon 8.8kg and graphite 0.65kg.

[0133] After mixing the powders of each component in the above coating evenly, add 8.5kg of potassium sodium water glass with a concentration of 43° and mix evenly, take the 50kg mixture after mixing evenly, and send it to the plodder to wrap 100kg of welding core (the specification is Φ4 .0), after baking at 80°C for 4 hours at a low temperature and then at 380°C for 1.5 hours at a high temperature, an electric welding electrode for Aubicite steel turnout repairing was obtained.

[0134] The electrode produced according to the above process has smooth surface, high yield, stable eccentricity, stable arc during welding, good slag removal, excellent electrode operation pe...

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Abstract

The invention provides a welding electrode for austenite-bainite steel turnout welding repair. The welding electrode comprises a welding core and a coating wrapping the welding core, wherein the coating comprises marble, fluorite, titanium dioxide, metal manganese, metal chromium, rutile, ferromolybdenum, sodium carboxymethylcellulose, soda ash, ferrovanadium, nickel powder, ferrosilicon and graphite. The coating with special components is utilized, and particularly, the use quantity of all the components in the coating is reasonably prepared, so that the welding electrode is especially suitable for welding repair of an austenite-bainite steel turnout; during welding repair, electric arcs are stable, splashing is little, slag removal is easy, the forming property of weld joints is good, and the tensile strength, yield strength, tensile rate and impact power performance of the area after welding repair are improved. The invention further provides a preparation method of the welding electrode for austenite-bainite steel turnout welding repair.

Description

technical field [0001] The invention relates to the technical field of electric welding electrodes, in particular to an electric welding electrode for Aubeite steel turnout repair welding and a preparation method thereof. Background technique [0002] Aubeite steel turnouts are mainly used in railway track separation and track junctions. They are a necessary part of railway tracks and an indispensable part of rail transportation lines. They play a huge role in the transportation of national economic construction. [0003] With the rapid development of my country's economy and the rapid development of the railway industry, it is estimated that the total length of my country's railway lines will reach 200,000 kilometers by 2025. The huge carrying capacity and complex and harsh operating environment are important characteristics of Chinese railways, which lead to serious damage such as stripping, falling blocks, collapse, and cracks of Aubeite steel turnouts. At present, the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 何生郭志强
Owner CHONGQING DINGYU ELECTROMECHANICAL
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