Friction-resistant titanium alloy steam turbine vane and production method thereof

A steam turbine blade and titanium alloy technology, which is applied in mechanical equipment, blade support elements, engine elements, etc., can solve the problems of steam turbine blade damage, high temperature, steam turbine blade breakage, etc., to improve friction resistance and high temperature resistance. , Increase hardness and prevent corrosion

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 under the action of high-temperature and high-pressure steam, they are subjected to relatively large frictional force of the steam during work. After long-term operation, failures such as breakage of the steam turbine blades will occur, and when the steam rubs against the steam turbine blades, high temperature, causing damage to turbine blades

Method used

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  • Friction-resistant titanium alloy steam turbine vane and production method thereof
  • Friction-resistant titanium alloy steam turbine vane and production method thereof

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Embodiment 1

[0032] Embodiment 1: A friction-resistant titanium alloy steam turbine blade provided in this embodiment includes a blade root, a blade body and a blade crown, and the blade root, blade body and blade crown are fixedly connected in sequence, and the blade body includes an inner arc side and an outer arc side , the chemical composition and mass percentage content of the steam turbine blade are as follows:

[0033] The chemical composition and mass percentage content of the steam turbine blade are as follows:

[0034] C: 2.3%, Si: 0.1%, Mn: 0.3%, P: 0.01%, S: 0.01%, Ni: 0.2%, N: 2.2%, V: 0.2%, Ti: 0.14%, TiC: 0.15%, TiCN: 0.1%, ZrN: 0.1%, Cr: 1.2%, the total amount is 0.1% trace elements Cr and Co, the total amount is 0.01% β-NiAl intermetallic compound as the main phase alloy powder, and the balance is Fe .

[0035] A preparation method for a friction-resistant titanium alloy steam turbine blade, comprising the following steps:

[0036] a. Add C, Si, Mn, P, S, Ni, V, Ti, TiC...

Embodiment 2

[0052] Embodiment 2: A friction-resistant titanium alloy steam turbine blade provided in this embodiment includes a blade root, a blade body and a blade crown, and the blade root, blade body and blade crown are fixedly connected in sequence, and the blade body includes an inner arc side and an outer arc side , the chemical composition and mass percentage content of the steam turbine blade are as follows:

[0053] The chemical composition and mass percentage content of the steam turbine blade are as follows:

[0054] C: 3.2%, Si: 2.6%, Mn: 1.0%, P: 0.1%, S: 0.05%, Ni: 3.0%, N: 3.5%, V: 2.5%, Ti: 0.6%, TiC: 2.5%, TiCN: 1.9%, ZrN: 2.5%, Cr: 1.5%, the total amount is 0.5% trace elements Cr and Co, the total amount is 0.7% β-NiAl intermetallic compound as the main phase alloy powder, and the balance is Fe .

[0055] A preparation method for a friction-resistant titanium alloy steam turbine blade, comprising the following steps:

[0056] a. Add C, Si, Mn, P, S, Ni, V, Ti, TiC, Ti...

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Abstract

The invention discloses a friction-resistant titanium alloy steam turbine vane and relates to the technical field of steam turbine vanes. The friction-resistant titanium alloy steam turbine vane comprises a vane root, a vane body and a vane crown. The vane root, the vane body and the vane crown are fixedly connected in sequence. The vane body comprises an inner arc side face and an outer arc sideface. The friction-resistant titanium alloy steam turbine vane is characterized in that the steam turbine vane comprises, by mass percentage, 2.3-3.2% of C, 0.1-2.6% of Si, 0.3-1.0% of Mn, less than 0.1% of P, less than 0.05% of S, 0.2-3.0% of Ni, 2.2-3.5% of N, 0.2-2.5% of V, 0.14-0.6% of Ti, 0.15-2.5% of TiC, 0.1-1.9% of TiCN, 0.1-2.5% of ZrN, 1.2-1.5% of Cr, 0.5% of the sum of a microelement Crand a microelement Co, less than 0.7% of the sum of alloy powder with a beta-NiAl intermetallic compound as a main phase and the balance Fe.

Description

technical field [0001] The invention relates to the technical field of steam turbine blades, in particular to a friction-resistant 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C32/00F01D5/28
CPCC22C37/10C22C32/0047C22C37/08F01D5/28F01D5/286F01D5/288F05D2300/17
Inventor 刘达王河平宗国翼
Owner 南京赛达科技有限公司
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