CN104404393A - Preparation method of turbine rotor alloy - Google Patents
Preparation method of turbine rotor alloy Download PDFInfo
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- CN104404393A CN104404393A CN201410615440.8A CN201410615440A CN104404393A CN 104404393 A CN104404393 A CN 104404393A CN 201410615440 A CN201410615440 A CN 201410615440A CN 104404393 A CN104404393 A CN 104404393A
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Abstract
The invention discloses a preparation method of a turbine rotor alloy. The alloy is obtained through melting, and alloy elements added in the melting process comprise 5-8% of Ni, 1-1.5% of Mo, 0.1-0.3% of Pb, 0.2-0.5% of Co, 0.7-1% of Mn, 0.2-0.3% of V, 0.25-0.35% of C, 0.1% or less of Si, 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
Technical field
The invention belongs to field of alloy material, be specifically related to a kind of preparation method 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 preparation method of turbine rotor alloy.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A preparation method for turbine rotor alloy, described alloy is obtained by melting, the alloying element added during melting and percentage composition as follows: Ni 5-8, Mo 1-1.5, Pb 0.1-0.3, Co 0.2-0.5, Mn 0.7-1, V 0.2-0.3, C 0.25-0.35, Si≤0.1, surplus is Fe.
Containing impurity such as inevitable P, S in alloy, but foreign matter content is more few better.
The turbine rotor alloy that the present invention obtains, 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: Ni 8, Mo 1, Pb 0.3, Co 0.3, Mn 1, V 0.3, C 0.30, Si0.07, and surplus is Fe, is added by each element in smelting furnace to smelt according to a conventional method to obtain.The yield strength of alloy: 720MPa, unit elongation: 17%, relative reduction in area: 65.0%, ballistic work A
kv: 180J.
Embodiment 2
The weight percent of each element of turbine rotor alloy is: Ni 5, Mo 1.5, Pb 0.1, Co 0.2, Mn 1, V 0.2, C 0.25, Si0.07, and surplus is Fe, is added by each element in smelting furnace to smelt according to a conventional method to obtain.The yield strength of alloy: 680MPa, unit elongation: 23%, relative reduction in area: 72.0%, ballistic work A
kv: 175J.
Embodiment 3
The weight percent of each element of turbine rotor alloy is: Ni 6, Mo 1.1, Pb 0.3, Co 0.5, Mn 0.7, V 0.3, C 0.35, Si0.06, and surplus is Fe, is added by each element in smelting furnace to smelt according to a conventional method to obtain.The yield strength of alloy: 710MPa, unit elongation: 19%, relative reduction in area: 68.2%, ballistic work A
kv: 167J.
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. the preparation method of a turbine rotor alloy, described alloy is obtained by melting, it is characterized in that, the alloying element added during melting and percentage composition as follows: Ni 5-8, Mo 1-1.5, Pb 0.1-0.3, Co 0.2-0.5, Mn 0.7-1, V 0.2-0.3, C 0.25-0.35, Si≤0.1, surplus is Fe.
2. the preparation method of turbine rotor alloy according to claim 1, is characterized in that, described alloying element and percentage composition as follows: Ni 8, Mo 1-1.5, Pb 0.3, Co 0.2-0.5, Mn 0.7-1, V 0.2-0.3, C 0.25-0.35, Si≤0.1, surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615440.8A CN104404393A (en) | 2014-11-05 | 2014-11-05 | Preparation method of turbine rotor alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615440.8A CN104404393A (en) | 2014-11-05 | 2014-11-05 | Preparation method of turbine rotor alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104404393A true CN104404393A (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410615440.8A Pending CN104404393A (en) | 2014-11-05 | 2014-11-05 | Preparation method of turbine rotor alloy |
Country Status (1)
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| CN (1) | CN104404393A (en) |
Cited By (2)
| 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 |
| CN104993625A (en) * | 2015-07-06 | 2015-10-21 | 无锡阳工机械制造有限公司 | High-weather resistance generator rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63203751A (en) * | 1987-02-17 | 1988-08-23 | Daido Steel Co Ltd | Alloy tool steel |
| CN1209846A (en) * | 1996-09-27 | 1999-03-03 | 川崎制铁株式会社 | High strength and high tenacity non-heat-treated steel having excellent machinability |
| CN103562427A (en) * | 2011-05-25 | 2014-02-05 | 新日铁住金株式会社 | Hot-rolled steel sheet and method for producing same |
| WO2014109401A1 (en) * | 2013-01-10 | 2014-07-17 | 株式会社神戸製鋼所 | Hot-rolled steel plate exhibiting excellent cold workability and excellent surface hardness after working |
-
2014
- 2014-11-05 CN CN201410615440.8A patent/CN104404393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63203751A (en) * | 1987-02-17 | 1988-08-23 | Daido Steel Co Ltd | Alloy tool steel |
| CN1209846A (en) * | 1996-09-27 | 1999-03-03 | 川崎制铁株式会社 | High strength and high tenacity non-heat-treated steel having excellent machinability |
| CN103562427A (en) * | 2011-05-25 | 2014-02-05 | 新日铁住金株式会社 | Hot-rolled steel sheet and method for producing same |
| WO2014109401A1 (en) * | 2013-01-10 | 2014-07-17 | 株式会社神戸製鋼所 | Hot-rolled steel plate exhibiting excellent cold workability and excellent surface hardness after working |
Cited By (2)
| 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 |
| CN104993625A (en) * | 2015-07-06 | 2015-10-21 | 无锡阳工机械制造有限公司 | High-weather resistance generator rotor |
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| C10 | Entry into substantive examination | ||
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Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |