A new type of alloy wire for rail repair and a method for repairing rail surface damage

An alloy wire and rail technology, applied in the field of additive manufacturing, can solve the problems of insufficient impact toughness of the welding repair layer, difficult to guarantee the repair quality, and low work efficiency, and achieve the effects of high work efficiency, improved corrosion resistance, and resource saving.

Active Publication Date: 2021-07-30
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] my country's railway operation is high-speed and heavy-duty, and the rail damage is becoming more and more serious. At present, the online repair process of the worn rail surface has problems such as low work efficiency, large waste of resources, insufficient impact toughness of the welding repair layer, and difficult guarantee of repair quality.

Method used

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  • A new type of alloy wire for rail repair and a method for repairing rail surface damage
  • A new type of alloy wire for rail repair and a method for repairing rail surface damage
  • A new type of alloy wire for rail repair and a method for repairing rail surface damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The new alloy wire for rail repair includes the following components by weight percentage: 0.6% silicon, 0.1% manganese, 0.01% vanadium, 0.01% copper and 0.2% carbon, and the rest is iron.

[0029] The above-mentioned novel alloy wire for rail repair is produced through the following methods: batching, melting and casting.

[0030] details as follows:

[0031] (1) Batching: Use metal manganese, metal copper, metal vanadium, metal iron, carbon block, and raw silicon as raw materials to make ingredients according to the target components.

[0032] (2) Melting:

[0033] (2.1) Add the prepared metal manganese, metal copper, metal vanadium, and metal iron into the intermediate frequency induction furnace, heat it with electricity to melt it, and then add the prepared carbon block and raw silicon in order to obtain an alloy melt.

[0034] (2.2) Deoxidize the molten alloy obtained in step 2.1, and the deoxidation time is 1-2 minutes.

[0035] (2.3) Control the carbon conten...

Embodiment 2

[0040] The new alloy wire for repairing rails includes the following components by weight percentage: 1.5% silicon, 0.6% manganese, 0.1% vanadium, 0.5% copper and 0.1% carbon, and the rest is iron.

[0041] The preparation method of the above-mentioned novel alloy wire for rail repair is according to the preparation method of the novel alloy wire for rail repair in Example 1.

[0042]The method for repairing rail surface damage by utilizing the above-mentioned novel alloy wire for rail repair comprises the following steps: (1) forging the steel casting of the above-mentioned novel alloy wire for rail repair into a wire rod, and cold drawing by a wire drawing process Cladding wire with a diameter of 1.0mm is formed. The wire drawing process includes multiple drawing passes. The method of stress relief before each drawing pass is to hold at 670°C for 8 hours and then air cool. (2) Clean the damaged surface, remove floating rust, dust, oil and other impurities, ensure the cleanli...

Embodiment 3

[0045] The new alloy wire for rail repair comprises the following components by weight percentage: 1.2% silicon, 0.4% manganese, 0.5% copper and 0.4% carbon, and the rest is iron.

[0046] The preparation method of the above-mentioned novel alloy wire for rail repair is according to the preparation method of the novel alloy wire for rail repair in Example 1.

[0047] The method for repairing rail surface damage by utilizing the above-mentioned novel alloy wire for rail repair comprises the following steps: (1) forging the steel casting of the above-mentioned novel alloy wire for rail repair into a wire rod, and cold drawing by a wire drawing process Cladding wire with a diameter of 1.0mm is formed. The wire drawing process includes multiple drawing passes. The method of stress relief before each drawing pass is to hold at 670°C for 8 hours and then air cool. (2) Clean the damaged surface, remove floating rust, dust, oil and other impurities, ensure the cleanliness of the repai...

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Abstract

The invention relates to a novel alloy wire for rail repair and a method for repairing rail surface damage. The novel alloy wire for rail repair includes the following components in weight percentage: 0.6-1.5% silicon, 0.1-0.6% silicon Manganese, 0.01-0.1% of vanadium, 0.01-0.5% of copper and 0.45% or less of carbon, and the rest is iron. Among the impurities contained in it, chromium is less than or equal to 0.4%, sulfur is less than or equal to 0.005%, and phosphorus is less than or equal to 0.01%. The new alloy wire for rail repair has high strength, hardness and toughness, and has good corrosion resistance. The cladding layer formed by cladding on the damaged surface has dense structure, small heat-affected zone, high bonding strength, fine and uniform grains, no columnar grain structure, good tensile strength and yield strength, and high impact The absorbed work ensures the repair quality of the rail surface damage, and the method for repairing the rail surface damage has high working efficiency and high resource utilization rate.

Description

technical field [0001] The invention relates to a novel alloy wire for rail repair and a method for repairing rail surface damage, and belongs to the technical field of additive manufacturing. Background technique [0002] Additive Manufacturing (AM), commonly known as 3D printing, is a fusion of computer-aided design, material processing and forming technology, based on digital model files, through software and numerical control system to combine special metal materials, non-metal materials and medical biological Materials are piled up layer by layer according to extrusion, sintering, melting, photocuring, spraying, etc., to create a manufacturing technology for physical objects. Compared with the traditional processing mode of raw material removal-cutting and assembly, it is a "bottom-up" manufacturing method through material accumulation, starting from scratch. This makes it possible to manufacture complex structural parts that were restricted by traditional manufacturin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/00B23K26/348B23K35/30
Inventor 夏志新徐加超陈磊
Owner SUZHOU UNIV
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