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Titanium alloy integral bladed disc and manufacturing method thereof

A technology of integral blades and manufacturing methods, which is applied to liquid fuel engines, components of pumping devices for elastic fluids, non-variable pumps, etc., can solve the problems of difficult technical realization and low strength of the connection interface, and achieve Improve the utilization rate and structural efficiency, reduce the amount of processing, the effect of high plasticity

Active Publication Date: 2011-05-11
有研金属复材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the existing TiAl-based alloy fusion welding and solid-state joining technology can not solve the problem of low connection interface strength (see the article "Research Progress of TiAl-based Alloy and Its Joining Technology" written by Chen Guoqing et al., published in "Welding ", 2007, No. 1, pp. 17-20)
[0004] In summary, in order to meet the development needs of high-performance aero-engines in the future, it is necessary to develop a titanium alloy integral blade disc with high room temperature plasticity, strength and low cycle fatigue performance, and the blade has good flame retardancy and high temperature strength. However, the existing technology is difficult to achieve

Method used

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  • Titanium alloy integral bladed disc and manufacturing method thereof
  • Titanium alloy integral bladed disc and manufacturing method thereof
  • Titanium alloy integral bladed disc and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A titanium alloy integral blade disc, the integral blade disc is composed of a wheel disc and blades, the wheel disc and the blade are integrated, the wheel disc is composed of TC4 titanium alloy, the blade is composed of Ti-48Al-2Cr-2Nb alloy, the wheel disc and Compositional transitions between leaves are straight transitions.

[0030] The manufacturing method of the above-mentioned titanium alloy integral blade disk adopts the laser melting deposition method to laser melt deposit Ti-48Al-2Cr-2Nb alloy blade on the TC4 titanium alloy wheel disk, the steps are as follows,

[0031] (1) TC4 titanium alloy wheel disc is prepared by forging method;

[0032] (2) The Ti-48Al-2Cr-2Nb alloy bar is made into pre-alloyed spherical powder, and the pre-alloyed spherical powder with a particle size of 50-150 μm is screened out, wherein the pre-alloyed spherical powder is atomized by inert gas Method preparation;

[0033](3) in the protective atmosphere box, pre-evacuate low vacuu...

Embodiment 2

[0040] A titanium alloy integral blade disc, the integral blade disc is composed of a disc and blades, the disc and the blade are integrated, the disc is composed of TA12 titanium alloy, and the blade is made of Ti-47Al-2Cr-2Nb-0.2W-0.15B Composed of titanium-aluminum alloy, the composition transition between the disc and the blade is a direct transition.

[0041] The manufacturing method of the above-mentioned titanium alloy integral blade disc adopts the laser melting deposition method to laser melt deposit Ti-47Al-2Cr-2Nb-0.2W-0.15B titanium-aluminum alloy thin-walled blades on the TA12 titanium alloy disc, and the steps are as follows,

[0042] (1) A TA12 titanium alloy wheel was prepared by forging;

[0043] (2) The Ti-47Al-2Cr-2Nb-0.2W-0.15B titanium-aluminum alloy bar is made into pre-alloyed spherical powder, and the pre-alloyed spherical powder with a particle size between 50 and 150 μm is screened out. Among them, the pre-alloyed spherical powder The spherical powde...

Embodiment 3

[0051] A titanium alloy integral blade disc, the integral blade disc is composed of a disc and blades, the disc and the blade are integrated, the disc is composed of TC11 titanium alloy, and the blade is made of Ti-47Al-2Mn-2Nb-0.8TiB 2 Composed of titanium-aluminum alloy, the composition transition between the disc and the blade is a direct transition.

[0052] The manufacturing method of the above-mentioned titanium alloy integral blade disk adopts the laser melting deposition method to laser melt deposit Ti-47Al-2Mn-2Nb-0.8TiB on the TC11 titanium alloy wheel disk 2 Titanium-aluminum alloy thin-walled blades, the steps are as follows,

[0053] (1) A TC11 titanium alloy wheel was prepared by forging;

[0054] (2) Ti-47Al-2Mn-2Nb-0.8TiB 2 Titanium-aluminum alloy rods are made into pre-alloyed spherical powders, and the pre-alloyed spherical powders with a particle size of 50-150 μm are screened out, wherein the pre-alloyed spherical powders are prepared by inert gas atomiza...

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Abstract

The invention discloses a titanium alloy integral bladed disc and a manufacturing method thereof, which belong to the technical field of titanium alloy material and manufacturing. The integral bladed disc consists of a rotary disc and blades which are integrated, and is characterized in that the rotary disc is made of high-strength titanium alloy and the blades is made of titanium aluminum intermetallic compound. The component transition between the rotary disc and the blades is direct transition. The invention utilizes laser to melt stacked materials layer by layer to directly prepare a near-net-shape titanium alloy integral bladed disc with inflaming retarding and high temperature strength performance without the need of the multi-step hot working process of conventional processing method, remarkably reduces processing amount and improves material utilization rate and structural efficiency; and the rotary disc has high plasticity and strength as well as low-cycle fatigue performance, and the blades have inflaming retarding performance and high temperature strength and rigidity, so as to satisfy the performance requirements of the gas compressor integral bladed disc on the rotarydisc and the blades during the using process.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy materials and its manufacture, and in particular relates to a titanium alloy integral blade disk and a manufacturing method thereof. Background technique [0002] Titanium alloy has low density, high specific strength, high yield ratio, corrosion resistance and good high-temperature mechanical properties. It is used in the manufacture of compressor parts (such as compressor casings, discs and blades) in modern high-thrust ratio aero-engines. etc.), however, under the action of actual working temperature, pressure and air flow, the tip of the titanium alloy blade is likely to collide with the casing, causing the titanium alloy to continue to burn after being ignited, forming a "titanium fire" accident. The problem of "titanium fire" is mainly solved by anti-titanium fire coating and flame-retardant titanium alloy. For example, through double-layer glow plasma infiltration technology, Cr, Cu...

Claims

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Application Information

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IPC IPC(8): F04D29/02B23P15/00
Inventor 张永忠石力开黄灿郭宏尹法章张习敏
Owner 有研金属复材技术有限公司
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