Antifouling titanium alloy turbine blade and preparation method thereof

A steam turbine blade and titanium alloy technology, which is applied to mechanical equipment, blade support elements, engine elements, etc., can solve problems such as affecting the working efficiency of steam turbine blades, corroding steam turbine blades, and breaking steam turbine blades, so as to improve the blocking effect and improve adhesion. power, and the effect of improving utilization

Inactive Publication Date: 2018-02-27
南京赛达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the steam turbine blades work in a humid environment for a long time, and the steam will carry more impurities and dust, the impurities and dust will combine with the steam and stick to the steam turbine blades. Under the long-term environment, it will not only affect the working efficiency of the steam turbine blades , and will corrode the steam turbine blades, resulting in breakage of steam turbine blades and other phenomena

Method used

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  • Antifouling titanium alloy turbine blade and preparation method thereof
  • Antifouling titanium alloy turbine blade and preparation method thereof
  • Antifouling titanium alloy turbine blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: This embodiment provides a kind of antifouling titanium alloy steam turbine blade, as figure 1 and 2 As shown, including the blade body 1 and the blade root 2, the blade body 1 includes an inner arc surface 11 and an outer arc surface 12, and the inner arc surface 11 is provided with a rough surface 3, and the blade body 1 is arranged along its long side direction. A plurality of small holes 4, the small holes 4 are in the shape of a truncated cone, and the bottom surface of the truncated small holes 4 is arranged close to the inner arc surface 11.

[0028] The chemical composition and mass percentage of the steam turbine blade are as follows: C: 3.3%, Si: 0.2%, Mn: 0.2%, P: 0.01%, S: 0.01%, Ni: 0.2%, V: 0.35%, Mo: 0.02 %, Ti: 0.04%, ZnO: 0.05%, Cu: 0.7%, TiN: 0.2%, TiAlN: 0.03%, CrN: 0.09%, the total amount is 0.01% of Cr and Co, and the balance is Fe.

[0029] Wherein, the particle size of ZnO and Cu powders is 7-35 μm.

[0030] A preparation method f...

Embodiment 2

[0037] Embodiment 2: This embodiment provides a kind of antifouling titanium alloy steam turbine blade, as figure 1 and 2 As shown, including the blade body 1 and the blade root 2, the blade body 1 includes an inner arc surface 11 and an outer arc surface 12, and the inner arc surface 11 is provided with a rough surface 3, and the blade body 1 is arranged along its long side direction. A plurality of small holes 4 are in the shape of a truncated cone, and the bottom surface of the small holes 4 in the shape of a truncated cone is arranged close to the inner arc surface 11 .

[0038] The chemical composition and mass percentage of the steam turbine blade are as follows: C: 3.9%, Si: 0.3%, Mn: 0.9%, P: 0.09%, S: 0.04%, Ni: 0.25%, V: 0.36%, Mo: 0.03 %, Ti: 0.05%, ZnO: 0.27%, Cu: 0.73%, TiN: 0.7%, TiAlN: 0.04%, CrN: 0.1%, the total amount is 0.2% of Cr and Co, and the balance is Fe.

[0039] Wherein, the particle size of the ZnO and Cu powders is 7-35 μm.

[0040] A preparation...

Embodiment 3

[0047] Embodiment 3: This embodiment provides a kind of antifouling titanium alloy steam turbine blade, as figure 1 and 2 As shown, including the blade body 1 and the blade root 2, the blade body 1 includes an inner arc surface 11 and an outer arc surface 12, and the inner arc surface 11 is provided with a rough surface 3, and the blade body 1 is arranged along its long side direction. A plurality of small holes 4 are in the shape of a truncated cone, and the bottom surface of the small holes 4 in the shape of a truncated cone is arranged close to the inner arc surface 11 .

[0048] The chemical composition and mass percentage of the steam turbine blade are as follows: C: 4.2%, Si: 3.6%, Mn: 1.1%, P: 0.1%, S: 0.05%, Ni: 3.0%, V: 0.38%, Mo: 0.04 %, Ti: 0.6%, ZnO: 0.3%, Cu: 0.95%, TiN: 0.9%, TiAlN: 1.1%, CrN: 0.2%, the total amount is 0.3% of Cr and Co, and the balance is Fe.

[0049] Wherein, the particle size of the ZnO and Cu powders is 7-35 μm.

[0050] A preparation meth...

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Abstract

The invention discloses an antifouling titanium alloy turbine blade, and relates to the technical field of turbine blades. The antifouling titanium alloy turbine blade comprises a blade body and a blade root. The blade body comprises an inner arc face and an outer arc face, a rough face is arranged on the inner arc face, and the turbine blade is prepared from, by mass, 3.3% to 4.2% of C, 0.2% to 3.6% of Si, 0.2% to 1.1% of Mn, smaller than 0.1% of P, smaller than 0.05% of S, 0.2% to 3.0% of Ni, 0.35% to 0.38% of V, 0.02% to 0.04% of Mo, 0.04% to 0.6% of Ti, 0.05% to 0.3% of ZnO, 0.7% to 0.95%of Cu, 0.2% to 0.9% of TiN, 0.03% to 1.1% of TiAlN, 0.09% to 0.2% of CrN, not smaller than 0.3% of Cr and Co and the balance Fe.

Description

technical field [0001] The invention relates to the technical field of steam turbine blades, in particular to an antifouling titanium alloy steam turbine blade and a preparation method thereof. Background technique [0002] Titanium alloy is a new type of structural material, which has excellent comprehensive properties, such as low density (~4.5g cm-3), high specific strength and specific fracture toughness, good fatigue strength and crack growth resistance, and good low temperature toughness. Excellent corrosion resistance, the maximum working temperature of some titanium alloys is 550°C, and it is expected to reach 700°C; the density of titanium metal is small, 4.5g / cm3, which is only 60% of iron, and is usually used with aluminum, magnesium, etc. It is called light metal, and its corresponding titanium alloy, aluminum alloy, and magnesium alloy are called light alloy; many countries in the world have recognized the importance of titanium alloy materials, and have success...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06F01D5/14F01D5/28
CPCC22C37/10C22C37/06F01D5/147F01D5/28F01D5/286F01D5/288F05D2240/31F05D2300/171
Inventor 刘达王河平宗国翼
Owner 南京赛达科技有限公司
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