CN109182913A - A kind of steam turbine casings heat resisting steel - Google Patents

A kind of steam turbine casings heat resisting steel Download PDF

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Publication number
CN109182913A
CN109182913A CN201811259115.7A CN201811259115A CN109182913A CN 109182913 A CN109182913 A CN 109182913A CN 201811259115 A CN201811259115 A CN 201811259115A CN 109182913 A CN109182913 A CN 109182913A
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resisting steel
heat resisting
steam turbine
turbine casings
mass percentage
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Inventor
梅林波
于文龙
安春香
刘松锋
王煜
孙林根
沈红卫
刘霞
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Shanghai Electric Power Generation Equipment Co Ltd
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Shanghai Electric Power Generation Equipment Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/007—Heat treatment of ferrous alloys containing Co
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

The present invention relates to metal material field, in particular to a kind of steam turbine casings heat resisting steel.The heat resisting steel includes following chemical element by mass percentage: C 0.04~0.15%, Si 0.05~0.60%, Mn 0.20~0.80%, Cr 8.50~10.00%, Co 2.50~3.60%, W 2.00~3.00%, V 0.10~0.40%, Nb 0.03~0.12%, N 0.002~0.030%, B 0.004~0.018%, Ni 0.01~0.30%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, impurity≤0.05%, the mass percentage of Fe 80~86%, B and the mass percentage ratio of N are 0.2~6.0.Casting of the invention can satisfy the requirement that operating temperature is 650 DEG C and 650 DEG C components of steam turbine below with heat resisting steel.

Description

A kind of steam turbine casings heat resisting steel
Technical field
The present invention relates to metal material field, in particular to a kind of steam turbine casings heat resisting steel.
Background technique
In existing high temperature casting material, the current country, which is included in, alternative in JB/T 11018-2010 standard to be had ZG12Cr10Mo1W1VNbN and ZG12Cr9Mo1VNbN etc..Though wherein ZG12Cr10Mo1W1VNbN steel grade has good room temperature strong Degree, plasticity and toughness, but maximum operating temperature is no more than 610 DEG C, as it is long when high temperature performance index creep rupture strength, Less than 50MPa under the conditions of 650 DEG C/100,000 hours, the design for having been unable to meet the steam turbine casings that operating temperature is 650 DEG C is wanted It asks.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of steam turbine casings heat resisting steel And preparation method thereof, it can satisfy the requirement that operating temperature is 650 DEG C and 650 DEG C components of steam turbine below.
In order to achieve the above objects and other related objects, an aspect of of the present present invention provides a kind of steam turbine casings with heat-resisting Steel, the heat resisting steel include following chemical element by mass percentage: C 0.04~0.15%, Si 0.05~0.60%, Mn 0.20~0.80%, Cr 8.50~10.00%, Co 2.50~3.60%, W 2.00~3.00%, V 0.10~0.40%, Nb 0.03~0.12%, N 0.002~0.030%, B 0.004~0.018%, Ni 0.01~0.30%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, impurity≤0.05%, Fe 80~86%, the mass percentage of B and the quality percentage of N contain Amount ratio is 0.2~6.0.
In certain embodiments of the present invention, the impurity includes P and/or S.
In certain embodiments of the present invention, it is counted on the basis of the gross mass of the heat resisting steel, the corresponding matter of described P, S Amount percentage is respectively: P≤0.030%, S≤0.020%.
In certain embodiments of the present invention, the heat resisting steel includes following chemical element: C by mass percentage 0.05~0.14%, Si 0.10~0.50%, Mn 0.30~0.80%, Cr 8.50~9.80%, Co 2.60~3.30%, W 2.10~2.90%, V 0.10~0.30%, Nb 0.04~0.10%, N 0.003~0.025%, B 0.006~ 0.015%, Ni 0.01~0.20%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, impurity≤0.035%, Fe 81 The mass percentage of~86%, B and the mass percentage ratio of N are 0.3~4.0.
In certain embodiments of the present invention, the impurity includes P and/or S.
In certain embodiments of the present invention, it is counted on the basis of the heat resisting steel gross mass, P, S mass percent It is P≤0.020%, S≤0.015% respectively.
The second aspect of the present invention provides the preparation method of aforementioned steam turbine casings heat resisting steel, by melting, refining, Sand casting simultaneously carries out normalized and tempered heat treatment.
In certain embodiments of the present invention, the normalizing temperature is selected from 1100 DEG C -1200 DEG C.
In certain embodiments of the present invention, the tempering temperature is selected from 700 DEG C -800 DEG C.
The third aspect of the present invention, purposes of the steam turbine casings heat resisting steel in steam turbine field.
Specific embodiment
Inventor passes through a large amount of explorative experiments, provides a kind of steam turbine casings heat resisting steel, can satisfy work Make the requirement that temperature is 650 DEG C and 650 DEG C components of steam turbine below, completes the present invention on this basis.
The following detailed description of steam turbine casings heat resisting steel according to the present invention and preparation method thereof.
Illustrate steam turbine casings heat resisting steel according to a first aspect of the present invention first.
Steam turbine casings heat resisting steel provided by the present invention includes following chemical element by mass percentage: C 0.04 ~0.15%, Si 0.05~0.60%, Mn 0.20~0.80%, Cr 8.50~10.00%, Co 2.50~3.60%, W 2.00~3.00%, V 0.10~0.40%, Nb 0.03~0.12%, N 0.002~0.030%, B 0.004~ 0.018%, Ni 0.01~0.30%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, impurity≤0.05%, Fe 80~ The mass percentage of 86%, B and the mass percentage ratio of N are 0.2~6.0.Add in steam turbine casings heat resisting steel Add micro B element that can significantly improve its high temperature creep strength；N element in steam turbine casings heat resisting steel mainly with addition V, Nb element forms the MX type precipitated phase of disperse and plays the effect of precipitation strength；As B and N element too high levels, easily exist The coarse BN precipitated phase with high thermal stability is generated in heat resisting steel during normalized treatment, is not sent out still at 1200 DEG C Raw dissolution, reduces grain-boundary strength, deteriorates croop property.So the mass percentage of B and N is critically important, the present inventor is a large amount of Experiment basis on, discovery the present invention in when the mass percentage ratio of the mass percentage of B and N be 0.2~6.0 when, Cooperate other chemical elements of aforementioned mass percentage, the high temperature resistance of obtained turbine materials is more preferable.
In steam turbine casings heat resisting steel provided by the present invention, the impurity includes P and/or S.S is a kind of in steel Objectionable impurities elements mainly reduce the thermoplasticity of steel, influence hot-workability, reduce corrosion resistance, especially not to thermoplasticity Benefit.Because of sulphur segregation crystal boundary, crystal boundary binding force is reduced, creep rupture strength is caused to reduce.P is a kind of harmful impurity member in steel Element, special Gao Shihui make steel generate certain brittleness.Objectionable impurities elements have not the mechanical property of heat resisting steel and alloy in steel Benefit influence, P and S should reduce its content as impurity element as far as possible.
In steam turbine casings heat resisting steel provided by the present invention, on the basis of the gross mass of steam turbine casings heat resisting steel Meter, the corresponding mass percent of described P, S is respectively: P≤0.030%, S≤0.020%.
In steam turbine casings heat resisting steel provided by the present invention, it is preferable that the heat resisting steel presses mass percentage packet Include following chemical element: C 0.05~0.14%, Si 0.10~0.50%, Mn 0.30~0.80%, Cr 8.50~ 9.80%, Co 2.60~3.30%, W 2.10~2.90%, V 0.10~0.30%, Nb 0.04~0.10%, N 0.003 ~0.025%, B 0.006~0.015%, Ni 0.01~0.20%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, Impurity≤0.035%, Fe 81~86%, the mass percentage of B and the mass percentage ratio of N are 0.3~4.0.
In steam turbine casings heat resisting steel provided by the present invention, it is preferable that the impurity includes P and/or S, with vapour It is counted on the basis of turbine casting heat resisting steel gross mass, P, S mass percent is P≤0.020%, S≤0.015% respectively.
Table 1 is the change of steam turbine casings heat resisting steel and ZG12Cr10Mo1W1VNbN and ZG12Cr9Mo1VNbN of the present invention Study a point comparison.
1 chemical component of table compares (wt.%)
Element Heat resisting steel of the present invention ZG12Cr10Mo1W1VNbN ZG12Cr9Mo1VNbN
C 0.04~0.15 0.11~0.14 0.11~0.14
Si 0.05~0.60 0.20~0.40 0.20~0.50
Mn 0.20~0.80 0.80~1.20 0.40~0.80
P ≤0.030 ≤0.020 ≤0.020
S ≤0.020 ≤0.010 ≤0.010
Cr 8.50~10.00 9.20~10.20 8.00~9.50
Co 2.50~3.60 - -
W 2.00~3.00 0.95~1.05 -
Mo - 0.90~1.05 0.90~1.05
V 0.10~0.40 0.18~0.25 0.18~0.25
Nb 0.03~0.12 0.05~0.08 0.05~0.08
N 0.002~0.030 0.040~0.060 0.040~0.060
B 0.004~0.018 - -
Ni 0.01~0.30 0.60~0.80 ≤0.40
Al ≤0.02 ≤0.020 ≤0.020
Ti ≤0.02 - -
Sn ≤0.02 - -
The present invention is compared with existing casting material ZG12Cr10Mo1W1VNbN and ZG12Cr9Mo1VNbN, composition characteristic It is free from Mo element, is added to Co and B element, improves the content of W element, reduces the content of C, N and Ni element, and is adjusted The proportionate relationship of N and B element, improves high temperature creep strength.
Secondly the preparation method of the steam turbine casings heat resisting steel of explanation according to a second aspect of the present invention.
The preparation method of aforementioned steam turbine casings heat resisting steel is provided in the present invention, including is poured by melting, refining, sand mold It casts and carries out normalized and tempered heat treatment.The normalizing temperature be selected from 1100 DEG C -1200 DEG C, the tempering temperature be selected from 700 DEG C - 800℃。
Third aspect present invention provide steam turbine casings heat resisting steel steam turbine field purposes, it is provided by the present invention Steam turbine casings heat resisting steel can be used to prepare steam turbine casings, and the steam turbine casings prepared are at 650 DEG C and 650 DEG C With good performance in hot environment below, can satisfy operating temperature is making for 650 DEG C and 650 DEG C steam turbines below With requiring.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from Various modifications or alterations are carried out under spirit of the invention.
In the following embodiments, reagent, material and the instrument used such as not special explanation, it is commercially available to obtain ?.
Embodiment 1
The steam turbine casings preparation method of heat resisting steel: added first according to theoretical calculation using a certain amount of alloy as furnace charge Enter arc melting, then refined, sand casting simultaneously carries out normalized and tempered heat treatment, wherein 1100 DEG C -1200 of normalizing temperature DEG C, tempering temperature is selected from 700 DEG C -800 DEG C.
Then sampling carries out chemical component, and the results are shown in Table 2 for chemical composition analysis, and unit is quality %.It is all satisfied Chemical component index request.
The change composition analysis result (quality %) of 2 embodiment of table, 1 steam turbine casings heat resisting steel
Embodiment 2
The steam turbine casings preparation method of heat resisting steel: added first according to theoretical calculation using a certain amount of alloy as furnace charge Enter arc melting, then refined and degassing, sand casting simultaneously carry out normalized and tempered heat treatment, wherein normalizing temperature 1100 DEG C -1200 DEG C, tempering temperature is selected from 700 DEG C -800 DEG C.
Then sampling carries out chemical component, and the results are shown in Table 3 for chemical composition analysis, and unit is quality %.It is all satisfied Chemical component index request.
The chemical composition analysis result (quality %) of 3 embodiment of table, 2 steam turbine casings heat resisting steel
Heat resisting steel of the present invention Embodiment 2
C 0.04~0.15 0.12
Si 0.05~0.60 0.41
Mn 0.20~0.80 0.55
P ≤0.030 0.002
S ≤0.020 0.001
Cr 8.50~10.00 8.60
Co 2.50~3.60 2.71
W 2.00~3.00 2.84
V 0.10~0.40 0.21
Nb 0.03~0.12 0.04
N 0.002~0.030 0.015
B 0.004~0.018 0.013
Ni 0.01~0.30 0.05
Al ≤0.02 0.01
Ti ≤0.02 0.01
Sn ≤0.02 0.01
Fe 80~86% 84.4
The mechanical property of 2 steam turbine casings heat resisting steel of 4 embodiment 1 of table and embodiment
Creep rupture strength has been carried out according to 2039 standard of GB/T with heat-resisting steel material to embodiment 1 and 2 casting of embodiment Test, the creep under the conditions of then deriving 650 DEG C/100,000 hours according to Extrapolation method specified in 2039 standard of GB/T are disconnected Resistance to spalling limit Ru 100 000/650, and with ZG12Cr10Mo1W1VNbN and ZG12Cr9Mo1VNbN in 650 DEG C/100,000 hours items Creep rupture strength under part is compared.Material creep breaking strength extrapolated value of the present invention is higher than 80MPa, compares casting material The creep rupture strength extrapolated value of ZG12Cr10Mo1W1VNbN and ZG12Cr9Mo1VNbN improves 70% or more, strengthening effect Obviously.

Claims (10)

1. a kind of steam turbine casings heat resisting steel, the heat resisting steel includes following chemical element by mass percentage: C 0.04 ~0.15%, Si 0.05~0.60%, Mn 0.20~0.80%, Cr 8.50~10.00%, Co 2.50~3.60%, W 2.00~3.00%, V 0.10~0.40%, Nb 0.03~0.12%, N 0.002~0.030%, B 0.004~ 0.018%, Ni 0.01~0.30%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, impurity≤0.05%, Fe 80~ The mass percentage of 86%, B and the mass percentage ratio of N are 0.2~6.0.
2. steam turbine casings heat resisting steel according to claim 1, which is characterized in that the impurity includes P and/or S.
3. steam turbine casings heat resisting steel according to claim 2, which is characterized in that the gross mass with the heat resisting steel is Benchmark meter, the corresponding mass percent of described P, S is respectively: P≤0.030%, S≤0.020%.
4. steam turbine casings heat resisting steel according to claim 1 to 3, which is characterized in that the heat resisting steel presses quality percentage Content includes following chemical element: C 0.05~0.14%, Si 0.10~0.50%, Mn 0.30~0.80%, Cr 8.50~ 9.80%, Co 2.60~3.30%, W 2.10~2.90%, V 0.10~0.30%, Nb 0.04~0.10%, N 0.003 ~0.025%, B 0.006~0.015%, Ni 0.01~0.20%, Al≤0.02%, Ti≤0.02%, Sn≤0.02%, Impurity≤0.035%, Fe 81~86%, the mass percentage of B and the mass percentage ratio of N are 0.3~4.0.
5. steam turbine casings heat resisting steel according to claim 4, which is characterized in that the impurity includes P and/or S.
6. steam turbine casings heat resisting steel according to claim 5, which is characterized in that using the heat resisting steel gross mass as base Quasi- meter, P, S mass percent is P≤0.020%, S≤0.015% respectively.
7. the preparation method of steam turbine casings heat resisting steel according to any claim from 1 to 6, by melting, Refining, sand casting simultaneously carry out normalized and tempered heat treatment.
8. the preparation method of steam turbine casings heat resisting steel according to claim 7, which is characterized in that the normalizing temperature Selected from 1100 DEG C -1200 DEG C.
9. the preparation method of steam turbine casings heat resisting steel according to claim 7, which is characterized in that the tempering temperature Selected from 700 DEG C -800 DEG C.
10. steam turbine casings heat resisting steel according to any claim from 1 to 6 is in the purposes in steam turbine field.
CN201811259115.7A 2018-10-26 2018-10-26 A kind of steam turbine casings heat resisting steel Pending CN109182913A (en)

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Cited By (4)

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CN109321831A (en) * 2018-11-16 2019-02-12 哈尔滨汽轮机厂有限责任公司 A kind of martensite heat resisting cast steel material and preparation method of the supercritical turbine containing B and N
CN109763066A (en) * 2019-01-18 2019-05-17 东方电气集团东方汽轮机有限公司 A kind of ultra-high parameter steam turbine key hot-end component New Heat-Resistant Steel
CN112063921A (en) * 2020-08-10 2020-12-11 上海交通大学 Air-cooled hardened steel plate with ultrahigh-strength high-toughness ultrafine structure and preparation process thereof
CN114107801A (en) * 2021-10-21 2022-03-01 东方电气集团东方汽轮机有限公司 Heat-resistant steel casting material suitable for 650 ℃ and below

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CN109321831A (en) * 2018-11-16 2019-02-12 哈尔滨汽轮机厂有限责任公司 A kind of martensite heat resisting cast steel material and preparation method of the supercritical turbine containing B and N
CN109763066A (en) * 2019-01-18 2019-05-17 东方电气集团东方汽轮机有限公司 A kind of ultra-high parameter steam turbine key hot-end component New Heat-Resistant Steel
CN112063921A (en) * 2020-08-10 2020-12-11 上海交通大学 Air-cooled hardened steel plate with ultrahigh-strength high-toughness ultrafine structure and preparation process thereof
CN112063921B (en) * 2020-08-10 2022-06-17 上海交通大学 Air-cooled hardened steel plate with ultrahigh-strength high-toughness ultrafine structure and preparation process thereof
CN114107801A (en) * 2021-10-21 2022-03-01 东方电气集团东方汽轮机有限公司 Heat-resistant steel casting material suitable for 650 ℃ and below

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Application publication date: 20190111