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Self-protection flux-cored wire for steel rail repair welding

A flux-cored welding wire and rail welding repair technology, which is applied to rails, welding/welding/cutting items, rails, etc., can solve the problems of difficult to guarantee the quality stability of rail welding repairs and low efficiency, and reduce the cost and efficiency of line maintenance High, high-quality welded joints

Active Publication Date: 2015-12-16
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the original manual arc welding repair technology is affected by equipment, technology, human factors, etc., and the stability of rail welding repair quality is difficult to guarantee, and the efficiency is low

Method used

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  • Self-protection flux-cored wire for steel rail repair welding

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] A self-shielding flux-cored wire for rail welding repair, the flux core includes alloy components and slag-based components, and the alloy components include the following components in parts by weight: 0.11 parts of C, 0.75 parts of Cr, and 2.10 parts of Ni , Mo0.45 part, Zr0.01 part;

[0019] The slag-based components include the following components in parts by weight, Fe 2 o 3 9.5 parts, BaCO 3 1.3 parts, aluminum-magnesium alloy 13.5 parts, BaF 2 25.5 parts, CaF 2 8.5 parts, LiF 2 14.5 parts, rare earth ferrosilicon 10.5 parts, Al 2 o 3 5.5 servings.

[0020] Its outer skin is a steel strip with a thickness of 0.6mm.

Embodiment 2

[0022] A self-shielding flux-cored wire for rail welding repair, the flux core includes alloy components and slag-based components, and the alloy components include the following components in parts by weight: 0.13 parts of C, 0.90 parts of Cr, and 2.30 parts of Ni , Mo0.50 part, Zr0.025 part;

[0023] The slag-based components include the following components in parts by weight, Fe 2 o 3 10 parts, BaCO 3 2 parts, aluminum-magnesium alloy 14.5 parts, BaF 2 30 parts, CaF 2 10 parts, LiF 2 15.5 parts, rare earth ferrosilicon 12 parts, Al 2 o 3 6.5 servings.

[0024] Its outer skin is a steel strip with a thickness of 0.6mm.

Embodiment 3

[0026] A self-shielding flux-cored wire for rail welding repair, the flux core includes alloy components and slag-based components, and the alloy components include the following components in parts by weight: 0.14 parts of C, 1.00 parts of Cr, and 2.40 parts of Ni , Mo0.55 part, Zr0.03 part;

[0027] The slag-based components include the following components in parts by weight, Fe 2 o 3 10.5 parts, BaCO 3 2.5 parts, 15 parts of aluminum-magnesium alloy, BaF 2 38 parts, CaF 2 11 parts, LiF 2 16 parts, rare earth ferrosilicon 13 parts, Al 2 o 3 7 servings.

[0028] Its outer skin is a steel strip with a thickness of 0.6mm.

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Abstract

The invention provides a self-protection flux-cored wire for steel rail repair welding. A flux core of the self-protection flux-cored wire comprises alloy components and slag system components. The alloy components include, by weight, 0.05-0.20 part of C, 0.60-1.20 parts of Cr, 1.00-3.50 parts of Ni, 0.30-0.70 part of Mo and 0.005-0.05 part of Zr. The slag system components include, by weight, 8-12 parts of Fe2O3, 0.5-3.5 parts of BaCO3, 12-17 parts of aluminum magnesium alloy, 24-32 parts of BaF2, 7-13 parts of CaF2, 13-18 parts of LiF2, 9-15 parts of rare earth ferrosilicon and 4-9 parts of Al2O3. According to the self-protection flux-cored wire for steel rail repair welding, no protective gas is needed in the welding process, the wire can make gas by itself to form the protective atmosphere, the wind resistant capacity is strong, welding can be applied under the four-level wind power, and the self-protection flux-cored wire is suitable for repair working on field steel rails.

Description

technical field [0001] The invention belongs to the technical field of welding wire materials, and in particular relates to a self-shielding flux-cored welding wire for rail welding repair. Background technique [0002] As my country's railways enter a period of rapid development, the line mileage continues to grow rapidly and the speed of trains increases multiple times, not only the requirements for the smoothness of the rail surface are becoming stricter, but also the demand for rails is becoming increasingly tense. Using manual arc welding repair technology to repair local defects of the rail surface (such as scratches, peeling off blocks, low wear and collapse at joints, etc.) is a common method for public maintenance and repair operations. However, the original manual arc welding repair technology is affected by equipment, technology, human factors, etc., and the stability of rail welding repair quality is difficult to guarantee, and the efficiency is low. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/3033B23K35/368B23K2101/26B23K2103/04
Inventor 侯杰昌马强
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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