CN104404392A - Turbine rotor alloy - Google Patents

Turbine rotor alloy Download PDF

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Publication number
CN104404392A
CN104404392A CN201410615432.3A CN201410615432A CN104404392A CN 104404392 A CN104404392 A CN 104404392A CN 201410615432 A CN201410615432 A CN 201410615432A CN 104404392 A CN104404392 A CN 104404392A
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CN
China
Prior art keywords
alloy
turbine rotor
present
rotor alloy
surplus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410615432.3A
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Chinese (zh)
Inventor
杨龙兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Yanggong Machinery Manufacturing Co Ltd
Original Assignee
Wuxi Yanggong Machinery Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Yanggong Machinery Manufacturing Co Ltd filed Critical Wuxi Yanggong Machinery Manufacturing Co Ltd
Priority to CN201410615432.3A priority Critical patent/CN104404392A/en
Publication of CN104404392A publication Critical patent/CN104404392A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a turbine rotor alloy. The alloy comprises 2-2.5% of Cr, 0.3-0.8% of Ni, 1-1.5% of Mo, 0.5-1% of Pb, 0.7-1% of Mn, 0.2-0.3% of V, 0.35-0.45% of C, 0.1% or less of S, and the balance of Fe. Compared with present alloy steel, the turbine rotor alloy has the advantages of obvious improvement of the impact energy of materials of present turbine rotors, improvement of the toughness of the materials, and suitableness for being used as a high temperature turbine rotor material.

Description

A kind of turbine rotor alloy
Technical field
The invention belongs to field of alloy material, be specifically related to a kind of turbine rotor alloy.
Background technology
Turbine rotor is the important core parts of steam turbine, because of the rigors of its Working environment, rotor alloy material is needed to have good hot strength, generally select steel alloy, as 30Cr1Mo1V, but the toughness of this steel alloy is relatively poor, its range of application is limited, the demand of high-temperature steam turbine rotor can not be met.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of turbine rotor alloy.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of turbine rotor alloy, alloying element and percentage composition as follows: Cr 2-2.5, Ni 0.3-0.8, Mo 1-1.5, Pb 0.5-1, Mn 0.7-1, V 0.2-0.3, C 0.35-0.45, Si≤0.1, surplus is Fe.
Containing impurity such as inevitable P, S in alloy, but foreign matter content is more few better.
Turbine rotor alloy of the present invention, compared with existing steel alloy, can significantly improve the ballistic work of existing turbine rotor material, improve the toughness of material, be particularly suitable for the material as high-temperature steam turbine rotor.
Embodiment
Below in conjunction with preferred embodiment, the present invention will be described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
The weight percent of each element of turbine rotor alloy is: Cr 2, Ni 0.8, Mo 1, Pb 0.5, Mn 0.8, V 0.2-0.3, C 0.35-0.45, Si≤0.1, and surplus is Fe, smelts according to a conventional method and obtains.The yield strength of alloy: 690MPa, unit elongation: 20%, relative reduction in area: 72.0%, ballistic work A kv: 171J.
Embodiment 2
The weight percent of each element of turbine rotor alloy is: Cr 2.5, Ni 0.3, Mo 1.5, Pb 0.8, Mn 0.7, V 0.2-0.3, C 0.35-0.45, Si≤0.1, and surplus is Fe, smelts according to a conventional method and obtains.The yield strength of alloy: 640MPa, unit elongation: 23%, relative reduction in area: 73.0%, ballistic work A kv: 180J.
Embodiment 3
The weight percent of each element of turbine rotor alloy is: Cr 2.5, Ni 0.5, Mo 1, Pb 1, Mn 0.7, V 0.2-0.3, C 0.35-0.45, Si≤0.1, and surplus is Fe, smelts according to a conventional method and obtains.The yield strength of alloy: 685MPa, unit elongation: 21%, relative reduction in area: 72.6%, ballistic work A kv: 185J.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a turbine rotor alloy, alloying element and percentage composition as follows: Cr 2-2.5, Ni 0.3-0.8, Mo 1-1.5, Pb 0.5-1, Mn 0.7-1, V 0.2-0.3, C 0.35-0.45, Si≤0.1, surplus is Fe.
2. turbine rotor alloy according to claim 1, is characterized in that, described alloying element and percentage composition as follows: Cr 2-2.5, Ni 0.3-0.8, Mo 1-1.5, Pb 1, Mn 0.7-1, V 0.2-0.3, C 0.35-0.45, Si≤0.1, surplus is Fe.
CN201410615432.3A 2014-11-05 2014-11-05 Turbine rotor alloy Pending CN104404392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410615432.3A CN104404392A (en) 2014-11-05 2014-11-05 Turbine rotor alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410615432.3A CN104404392A (en) 2014-11-05 2014-11-05 Turbine rotor alloy

Publications (1)

Publication Number Publication Date
CN104404392A true CN104404392A (en) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410615432.3A Pending CN104404392A (en) 2014-11-05 2014-11-05 Turbine rotor alloy

Country Status (1)

Country Link
CN (1) CN104404392A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967232A (en) * 2015-07-06 2015-10-07 无锡阳工机械制造有限公司 Generator rotor prolonged in service life

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1385548A (en) * 2001-03-05 2002-12-18 石田清仁 Easy cutting tool steel
EP1275745A1 (en) * 1999-10-04 2003-01-15 Mitsubishi Heavy Industries, Ltd. Low-alloy heat-resistant steel, process for producing the same, and turbine rotor
CN101649424A (en) * 2009-08-18 2010-02-17 泰州市永昌冶金设备有限公司 Novel heat resistant steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275745A1 (en) * 1999-10-04 2003-01-15 Mitsubishi Heavy Industries, Ltd. Low-alloy heat-resistant steel, process for producing the same, and turbine rotor
CN1385548A (en) * 2001-03-05 2002-12-18 石田清仁 Easy cutting tool steel
CN101649424A (en) * 2009-08-18 2010-02-17 泰州市永昌冶金设备有限公司 Novel heat resistant steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967232A (en) * 2015-07-06 2015-10-07 无锡阳工机械制造有限公司 Generator rotor prolonged in service life

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Application publication date: 20150311

RJ01 Rejection of invention patent application after publication