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Laser remanufacturing and reinforcing method of mine car wheel set

A technology of laser remanufacturing and mining wheels, applied in the direction of coating, metal material coating process, etc., can solve the problems of no applicable laser cladding remanufacturing and strengthening methods, short service life, different damage conditions, etc. Economic value and practical value, improved service life, good buffering effect

Inactive Publication Date: 2015-09-02
辽宁思达思克控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, there are many remanufacturing and repairing methods for workpieces based on laser cladding technology, which solve the problem of short service life of some workpieces to a certain extent. , different damage conditions, etc., there is currently no laser cladding remanufacturing and strengthening method suitable for mining wheel sets, which is also the problem to be solved in this application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The laser remanufacturing and strengthening method of the mining wheel set specifically includes the following steps.

[0023] 1. Flaw detection and preliminary treatment:

[0024] (1) Remove the rust and oil stains on the surface of the mine wheel pair, and conduct size and internal flaw detection;

[0025] (2) According to the flaw detection results, the surface fatigue layer is removed by turning. In case of local corrosion and the damage depth exceeds the fatigue layer depth, the turning amount is determined according to the maximum depth of corrosion or damage. In this embodiment, the turning amount is determined to be 7mm.

[0026] 2. Laser middle buffer layer cladding

[0027] (1) Preliminary work

[0028] Remove the oil stain on the cutting surface, measure the size, and determine that the outer diameter loss is 14mm;

[0029] (2) Preparation of intermediate buffer layer material

[0030] The intermediate buffer layer is made of nickel-based alloy powder. Th...

Embodiment 2

[0043] The laser remanufacturing and strengthening method of the mining wheel set specifically includes the following steps.

[0044] 1. Flaw detection and preliminary treatment

[0045] (1) Remove the rust and oil stains on the surface of the mine wheel pair, and conduct size and internal flaw detection;

[0046] (2) According to the flaw detection results, the amount of turning is set to 4 (the outer diameter has been worn to a certain extent before turning, so the amount of turning is not equal to the loss of the outer diameter) mm.

[0047] 2. Laser middle buffer layer cladding

[0048] (1) Preliminary work

[0049] Remove the oil stain on the cutting surface, measure the size, and determine that the outer diameter loss is 11mm;

[0050] (2) Preparation of intermediate buffer layer powder

[0051] The intermediate buffer layer is made of nickel-based alloy powder. The chemical composition of the powder is: 0.40% carbon, 3.5% silicon, 7.5% chromium, 3.0% iron, 1.5% ...

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Abstract

The invention relates to a laser remanufacturing and reinforcing method of a mine car wheel set. The laser remanufacturing and reinforcing method is characterized in that nickel-based alloy powder is adopted for a fusion covering middle buffer layer, and the nickel-based alloy powder comprises the following chemical components in percentage by weight: 0.33%-0.50% of carbon, 0.32%-3.8% of silicon, 0.65%-7.5% of chromium, 0.25%-3.5% of iron, 0.10%-1.5% of boron, 0.10%-0.2% of vanadium and the balance of nickel and inevitable impurities; iron-based alloy powder is adopted for a fusion covering strengthening layer, and the iron-based alloy powder comprises the following components in percentage by weight: 0.10%-1.5% of carbon, 0.22%-2.8% of silicon, 4.5%-6.0% of chromium, 4.5%-5.0% of molybdenum, 1.5%-2.0% of boron, 3.0%-3.5% of manganese, 2.0%-2.5% of vanadium, 6.5%-7.5% of tungsten and the balance of iron and inevitable impurities. Thus, the laser remanufacturing and reinforcing method disclosed by the invention can be used for effectively prolonging the service life of the mine car wheel set and reducing the replacement frequency of the mine car wheel set.

Description

technical field [0001] The invention relates to laser processing technology, in particular to a laser remanufacturing and strengthening method of a mining wheel set. Background technique [0002] Mining wheel sets are the main components of mining rail transport vehicles. They work under high impact loads, alternating loads, and humid and acid-base environments for a long time. Through field investigations, it is found that the main failure modes of mining wheel sets are stress cracks, wear or corrosion. lead to failure. At present, the service life of mining wheels is generally about 3500-4000 kilometers. For example, some high-sulfur mines have a shorter service life due to the presence of corrosive substances, and they are basically scrapped after use. Taking Anshan Iron and Steel’s Dagushan Iron Mine as an example, the purchase price of new mining wheels is 12,000-13,000 yuan / piece, and the service life is about 3,500-4,000 kilometers, which translates to only about 1-2...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/05C22C38/38C21D10/00C23F17/00
Inventor 安志飞李永波芦强
Owner 辽宁思达思克控股有限公司
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