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A self-fluxing alloy powder and titanium alloy blade pulse laser remanufacturing forming process

A technology of self-fluxing alloys and pulsed lasers, which is applied in metal material coating technology, metal processing equipment, transportation and packaging, etc., can solve the problems of high forming precision, difficult to achieve, high interface bonding strength, etc.

Active Publication Date: 2021-04-20
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Micro-arc surfacing welding is used to profiling repair volume damaged blades, which is difficult to achieve high forming accuracy due to limitations in process and other factors;
[0004] (2) Using surface strengthening treatment such as high-speed arc spraying and flame spraying to improve the life of the blade, it is difficult to achieve a high interface bonding strength;
[0006] (4) The function of the surface is strengthened by measures such as solid solution and boronizing, but it is impossible to achieve a certain volume of rapid prototyping repair

Method used

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  • A self-fluxing alloy powder and titanium alloy blade pulse laser remanufacturing forming process
  • A self-fluxing alloy powder and titanium alloy blade pulse laser remanufacturing forming process
  • A self-fluxing alloy powder and titanium alloy blade pulse laser remanufacturing forming process

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Effect test

Embodiment 1

[0032] see Figure 1-3 , the present invention provides a technical solution:

[0033] A titanium alloy blade laser remanufacturing special alloy powder is composed of the following components in weight percentage: 5.50% Al, 4.20% V, 0.28% Fe, 0.08% C, the balance is Ti, the powder is spherical, and the average particle size is 120 μm.

[0034] Volume damage There is volume damage on the inlet edge of the titanium alloy blade, the wear thickness reaches 2.2mm, and there is partial corrosion on the surface. Laser remanufacturing steps are as follows:

[0035] (1) Corrosion removal on the remanufactured part of the titanium alloy blade: use an angle grinder or a grinding wheel to remove the corrosion or rust on the surface to be repaired, expose the fresh substrate, and smooth the surface;

[0036] (2) Clamping of the volume damaged blade: fix the volume damaged titanium alloy blade on the working turntable, so that the axis of the blade to be remanufactured coincides with th...

Embodiment 2

[0043] A special alloy powder for laser remanufacturing of titanium alloy blades is composed of the following components in terms of weight percentage: 6.10% Al, 3.40% V, 0.25% Fe, 0.05% C, the balance is Ti, the powder is spherical, and the average particle size is 50 μm.

[0044] Volume damage There is volume damage on the inlet edge of the titanium alloy blade, the wear thickness reaches 2.2mm, and there is partial corrosion on the surface. Laser remanufacturing steps are as follows:

[0045] (1) Corrosion removal on the remanufactured part of the titanium alloy blade: use an angle grinder or a grinding wheel to remove the corrosion or rust on the surface to be repaired, expose the fresh substrate, and smooth the surface;

[0046] (2) Clamping of the volume damaged blade: fix the volume damaged titanium alloy blade on the working turntable, so that the axis of the blade to be remanufactured coincides with the axis of the three-jaw chuck, and the laser head is perpendicular t...

Embodiment 3

[0053] A titanium alloy blade laser remanufacturing special alloy powder is composed of the following components in weight percentage: 6.80% Al, 4.50% V, 0.30% Fe, 0.10% C, the balance is Ti, the powder is spherical, and the average particle size is 150 μm.

[0054] Volume damage There is volume damage on the inlet edge of the titanium alloy blade, the wear thickness reaches 2.1mm, and there is partial corrosion on the surface. Laser remanufacturing steps are as follows:

[0055] (1) Corrosion removal on the remanufactured part of the titanium alloy blade: use an angle grinder or a grinding wheel to remove the corrosion or rust on the surface to be repaired, expose the fresh substrate, and smooth the surface;

[0056] (2) Clamping of the volume damaged blade: fix the volume damaged titanium alloy blade on the working turntable, so that the axis of the blade to be remanufactured coincides with the axis of the three-jaw chuck, and the laser head is perpendicular to the directio...

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Abstract

The invention relates to the field of laser remanufacturing of titanium alloy blades, in particular to a pulse laser remanufacturing process for self-fluxing alloy powder and titanium alloy blades, wherein the composition and content of the main elements of the self-fluxing alloy powder used are as follows: 5.50-6.80Al, 3.40~4.50V, 0.25~0.30Fe, 0.05~0.10C, the balance is Ti, and the particle size is about 50-150μm. Self-fluxing alloy powder is used for pulse laser remanufacturing and repairing of volume damaged Ti-6Al-4V blades. The thermal expansion coefficient of the cladding layer is matched and close to that of the substrate, which can significantly control the growth of hard and brittle phases at the interface between the cladding layer and the substrate, and improve Interfacial bonding strength prevents the initiation of thermal cracks and improves the repair quality of remanufacturing forming.

Description

technical field [0001] The invention relates to the technical field of laser remanufacturing, in particular to a pulse laser remanufacturing forming process of self-melting alloy powder and titanium alloy blades. Background technique [0002] Titanium alloys are widely used in the manufacture of aircraft engines and blades due to their high specific strength and good corrosion resistance. Directional twisting and non-periodic, non-amplitude vibration loads. Especially the edge of the blade at the intake end and the tip of the front fan blade are prone to volume damage in the form of corrosion pits, cracks, and fractures due to the combined effects of centrifugal force, air excitation force, and the impact of rigid foreign objects transported by strong airflow. The titanium alloy blade has high material value, complex heat treatment and processing technology, so it has high product added value and remanufacturing value. The existing laser remanufacturing forming research an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C14/00C22F3/00C23C24/10
CPCC22C14/00C22F3/00C23C24/103B22F1/065
Inventor 任维彬葛清周金宇雷卫宁陈国炎
Owner JIANGSU UNIV OF TECH