CN106119731A - A kind of gas turbine blower Blade Steel material and preparation method thereof - Google Patents
A kind of gas turbine blower Blade Steel material and preparation method thereof Download PDFInfo
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- CN106119731A CN106119731A CN201610760876.5A CN201610760876A CN106119731A CN 106119731 A CN106119731 A CN 106119731A CN 201610760876 A CN201610760876 A CN 201610760876A CN 106119731 A CN106119731 A CN 106119731A
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- 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
Abstract
The invention discloses a kind of gas turbine blower Blade Steel material and preparation method thereof, stainless steel material by weight percentage, C:0.17% ~ 0.22%, Si:0.1% ~ 0.50%, Mn:0.3% ~ 0.8%, P :≤0.030%, S :≤0.020%, Cr:12.5% ~ 14.0%, Ni:0.3% ~ 0.8%, surplus are Fe.Its preparation method is: use non-vacuum induction furnace melting, LF external refining, VD refining furnace, electroslag, obtain pure uniform ingot casting, and by the heating optimized, forging and heat treatment obtain gas turbine blower Blade Steel material, this material has the most comprehensive mechanical property, tensile strength sigma b >=800MPa, yield strength σ 0.02 >=650, elongation percentage >=15%, the contraction percentage of area >=50%, impact of collision merit KV2 >=60J, side knock merit KV2 >=45J, low vertically and horizontally performance difference (≤20%) and low FATT50(≤30 DEG C), meet the performance requirement of combustion gas compressor blade.
Description
Technical field
The present invention relates to a kind of steel Steel material and preparation method thereof, be specially a kind of gas turbine blower Blade Steel material
And preparation method thereof, belong to alloy material applied technical field.
Background technology
Compressor is converted to the vitals of heat energy as kinetic energy in gas turbine, and its blade is subjected to top load and makees
With, also subject to centrifugal force, the Circulation of twisting resistance, so blade material should have high intensity index, also to have had is tough
Property index, especially material lateral performance, vertically and horizontally mechanical property difference are required the highest, and owing to it is as gas turbine
Machine electromotor provides gases at high pressure, its air inlet temperature i.e. difference of ambient temperature, it is desirable to material has low ductile-brittle transiton temperature
Degree and FATT50.Current domestic Blade Steel is difficult to meet the requirement of compressor blade, mostly relies on import, to combustion gas turbine
Localization has a negative impact, and therefore the development production domesticization of compressor blade steel is significant.
And the strength of materials that current gas turbine blower Blade Steel material preparation method is produced is low, do not have good disconnected
Split toughness, and the horizontal mechanical performance of material and anticorrosion stress-resistant performance low, in use, the tensile strength of material is little
In 800Mpa；Yield strength is again smaller than 650N/mm2；Percentage elongation is less than 15%；The contraction percentage of area is less than 50%；Impact of collision merit
Less than 60J；Side knock merit is less than 45J, and the nitrogen content in material is more than 20ppm, and the service life making material is short, it is impossible to meet
The performance requirement of combustion gas compressor blade, leaf tissue is uneven, and in the case of intensity is low, its toughness is the lowest, longitudinal and horizontal
Uneven to performance.
Summary of the invention
The purpose of the present invention is that provides a kind of gas turbine blower Blade Steel material to solve the problems referred to above
And preparation method thereof, meet the use requirement under complex work environment.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of gas turbine blower Blade Steel material, with
Percentage by weight meter, including C:0.17% ~ 0.22%, Si:0.1% ~ 0.50%, Mn:0.3% ~ 0.8%, P :≤0.030%, S :≤
0.020%, Cr:12.5% ~ 14.0%, Ni:0.3% ~ 0.8%, surplus are Fe.
Its preparation methods steps is as follows:
Step A, by above-mentioned elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is
1500 ~ 1550 DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；
Step B, the molten steel of step A is blended in LF external refining stove and carries out refine, make refined molten steel；
Step C, by the refined molten steel of step B, be positioned over VD refining furnace vacuum degassing with further refine, sampling point after broken sky
Analysis, adjusting component, make high-quality molten steel；
Step D, by the high-quality molten steel of step C, use bet method to pour into electrode bar；
Step E, using the electrode bar of step D as electrode, be positioned in electroslag furnace and carry out secondary remelting purification, formed ESR ingot；
Step F, ESR ingot step E made, be heated to 1180 DEG C ~ 1200 DEG C, is incubated 30h, pulls out through two upsettings two with press,
Make steel billet；
Step G, steel billet step F made make annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, after insulation 1 ~ 2h
Forging is become a useful person, and slow cooling；
Step H, step G is forged after section bar carry out heat treatment after forging: be cooled to slowly after forging surface temperature 150 DEG C ~
180 DEG C, entering stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, be incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720
DEG C, it is incubated 24h/100mm, then stove is cooled to 500 DEG C, air cooling of coming out of the stove, and prepares material requested.
Preferably, in step A, melting molten steel is carried out in non-vacuum induction furnace.
Preferably, in step B, external refining is carried out in LF stove.
Preferably, in step C, external refining is carried out in VD stove, adds 0.5kg/ ton rare earth element ce before tapping.
Preferably, in step F, 2000T quick forging machine is used to forge.
Preferably, in step G, annealing is carried out in car type furnace.
Preferably, described impurity is: in terms of percentage by weight %, N≤0.01%, in preparation process N content control≤
18ppm。
The invention has the beneficial effects as follows: prepared by this kind of gas turbine blower Blade Steel material and preparation method thereof stainless
Steel material even tissue, external refining is carried out in VD stove, adds 0.5kg/ ton rare earth element ce, improve the pure of material before tapping
Cleanliness, makes gas turbine blower Blade Steel material plasticity and impact flexibility under low temperature, room temperature and high-temperature condition strengthen, uses
2000T quick forging machine carries out forging and pass through two upsettings two and pulls out, and makes leaf tissue uniform, has excellent fracture toughness, good
Horizontal mechanical performance；Producing described high-strength high-ductility stainless steel material by the present invention, it has in addition to high intensity, tensile strength
σ b >=800MPa, yield strength σ 0.02 >=650, elongation percentage >=15%, the contraction percentage of area >=50%, impact of collision merit KV2 >=60J,
Side knock merit KV2 >=45J, low vertically and horizontally performance difference (≤20%) and low FATT50(≤30 DEG C), meet gas pressure
The performance requirement of mechanism of qi blade makes material have excellent impact flexibility, has good economic benefit and social benefit, is suitable for pushing away
Wide use.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
A kind of gas turbine blower Blade Steel material, by weight percentage, including C:0.17% ~ 0.22%, Si:0.1%
~ 0.50%, Mn:0.3% ~ 0.8%, P :≤0.030%, S :≤0.020%, Cr:12.5% ~ 14.0%, Ni:0.3% ~ 0.8%, surplus are
Fe；
Its preparation methods steps is as follows:
Step A, by above-mentioned elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is
1500 ~ 1550 DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；
Step B, the molten steel of step A is blended in LF external refining stove and carries out refine, make refined molten steel；
Step C, by the refined molten steel of step B, be positioned over VD refining furnace vacuum degassing with further refine, sampling point after broken sky
Analysis, adjusting component, make high-quality molten steel；
Wherein, external refining is carried out in VD stove, adds 0.5kg/ ton rare earth element ce before tapping；
Step D, by the high-quality molten steel of step C, use bet method to pour into electrode bar；
Step E, using the electrode bar of step D as electrode, be positioned in electroslag furnace and carry out secondary remelting purification, formed ESR ingot；
Step F, ESR ingot step E made, be heated to 1180 DEG C ~ 1200 DEG C, is incubated 30h, pulls out through two upsettings two with press,
Make steel billet；
Wherein, 2000T quick forging machine is used to forge；
Step G, steel billet step F made make annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, after insulation 1 ~ 2h
Forging is become a useful person, and slow cooling；
Step H, step G is forged after section bar carry out heat treatment after forging: be cooled to slowly after forging surface temperature 150 DEG C ~
180 DEG C, entering stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, be incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720
DEG C, it is incubated 24h/100mm, then stove is cooled to 500 DEG C, air cooling of coming out of the stove, and prepares material requested.
Described impurity is: in terms of percentage by weight %, N≤0.01%, and in preparation process, N content controls at≤18ppm.
Embodiment one:
Choose C:0.18%, Si:0.15%, Mn:0.45%, P:0.025%, S:0.008%, Cr:12.6%, Ni:0.65% and surplus
Fe；By above-mentioned elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is 1500 ~ 1550
DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；Molten steel is blended into LF
External refining stove carries out refine, makes refined molten steel；By refined molten steel, it is positioned over VD refining furnace vacuum degassing with essence further
Refining, sample analysis after broken sky, adjusting component, make high-quality molten steel；Wherein, external refining is carried out in VD stove, adds before tapping
0.5kg/ ton rare earth element ce；By high-quality molten steel, bet method is used to pour into electrode bar；Using electrode bar as electrode, it is positioned over
Electroslag furnace carries out secondary remelting purification, forms ESR ingot；The ESR ingot that will make, is heated to 1180 DEG C ~ 1200 DEG C, insulation
30h, pulls out through two upsettings two with press, makes steel billet；Wherein, 2000T quick forging machine is used to forge；The steel billet made is carried out
Annealing, by heating steel billet to 1140 DEG C ~ 1160 DEG C, forges after insulation 1 ~ 2h and becomes a useful person, and slow cooling；Section bar after forging is entered
Row heat treatment after forging: be cooled to surface temperature 150 DEG C ~ 180 DEG C after forging slowly, enter stove and be heated to the speed of 100 DEG C/h
980 DEG C, being incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720 DEG C, is incubated 24h/100mm, and then stove is cooled to 500 DEG C,
Come out of the stove air cooling, prepare material requested.
Described impurity is: in terms of percentage by weight %, and N≤0.01%, in preparation process, N content controls at 18ppm.
Embodiment two:
Choose C:0.20%, Si:0.30%, Mn:0.55%, P:0.025%, S:0.008%, Cr:13.0%, Ni:0.75% and surplus
Fe；By above-mentioned elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is 1500 ~ 1550
DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；Molten steel is blended into LF
External refining stove carries out refine, makes refined molten steel；By refined molten steel, it is positioned over VD refining furnace vacuum degassing with essence further
Refining, sample analysis after broken sky, adjusting component, make high-quality molten steel；Wherein, external refining is carried out in VD stove, adds before tapping
0.5kg/ ton rare earth element ce；By high-quality molten steel, bet method is used to pour into electrode bar；Using electrode bar as electrode, it is positioned over
Electroslag furnace carries out secondary remelting purification, forms ESR ingot；The ESR ingot that will make, is heated to 1180 DEG C ~ 1200 DEG C, insulation
30h, pulls out through two upsettings two with press, makes steel billet；Wherein, 2000T quick forging machine is used to forge；The steel billet made is carried out
Annealing, by heating steel billet to 1140 DEG C ~ 1160 DEG C, forges after insulation 1 ~ 2h and becomes a useful person, and slow cooling；Section bar after forging is entered
Row heat treatment after forging: be cooled to surface temperature 150 DEG C ~ 180 DEG C after forging slowly, enter stove and be heated to the speed of 90 DEG C/h
980 DEG C, being incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720 DEG C, is incubated 24h/100mm, and then stove is cooled to 500 DEG C,
Come out of the stove air cooling, prepare material requested.
Described impurity is: in terms of percentage by weight %, N≤0.01%, and in preparation process, N content controls at≤15ppm.
Embodiment three:
Choose C:0.19%, Si:0.20%, Mn:0.50%, P:0.020%, S:0.005%, Cr:12.6%, Ni:0.65% and surplus
Fe；By above-mentioned elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is 1500 ~ 1550
DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；Molten steel is blended into LF
External refining stove carries out refine, makes refined molten steel；By refined molten steel, it is positioned over VD refining furnace vacuum degassing with essence further
Refining, sample analysis after broken sky, adjusting component, make high-quality molten steel；Wherein, external refining is carried out in VD stove, adds before tapping
0.5kg/ ton rare earth element ce；By high-quality molten steel, bet method is used to pour into electrode bar；Using electrode bar as electrode, it is positioned over
Electroslag furnace carries out secondary remelting purification, forms ESR ingot；The ESR ingot that will make, is heated to 1180 DEG C ~ 1200 DEG C, insulation
30h, pulls out through two upsettings two with press, makes steel billet；Wherein, 2000T quick forging machine is used to forge；The steel billet made is carried out
Annealing, by heating steel billet to 1140 DEG C ~ 1160 DEG C, forges after insulation 1 ~ 2h and becomes a useful person, and slow cooling；Section bar after forging is entered
Row heat treatment after forging: be cooled to surface temperature 150 DEG C ~ 180 DEG C after forging slowly, enter stove and be heated to the speed of 95 DEG C/h
980 DEG C, being incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720 DEG C, is incubated 24h/100mm, and then stove is cooled to 500 DEG C,
Come out of the stove air cooling, prepare material requested.
Described impurity is: in terms of percentage by weight %, N≤0.01%, and in preparation process, N content controls at≤16ppm.
The alloy material prepared according to embodiment one, embodiment two and embodiment three, by gas turbine blower blade
The stainless steel material even tissue of Steel material and preparation method thereof preparation, external refining is carried out in VD stove, adds before tapping
0.5kg/ ton rare earth element ce, improves the degree of purity of material, makes gas turbine blower Blade Steel material at low temperature, room temperature and height
In the case of temperature, plasticity and impact flexibility strengthen, and use 2000T quick forging machine to carry out forging and pass through two upsettings two and pull out, make leaf tissue equal
Uniformly, there is excellent fracture toughness, good horizontal mechanical performance；Described high-strength high-ductility stainless steel is produced by the present invention
Material, it has in addition to high intensity, tensile strength sigma b >=800MPa, yield strength σ 0.02 >=650, elongation percentage >=15%, section
Shrinkage factor >=50%, impact of collision merit KV2 >=60J, side knock merit KV2 >=45J, low vertically and horizontally performance difference (≤20%) with
And low FATT50(≤30 DEG C), the performance requirement meeting combustion gas compressor blade makes material have excellent impact flexibility.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any labelling in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (8)
1. a gas turbine blower Blade Steel material, it is characterised in that in terms of percentage by weight %, including C:0.17% ~
0.22%, Si:0.1% ~ 0.50%, Mn:0.3% ~ 0.8%, P :≤0.030%, S :≤0.020%, Cr:12.5% ~ 14.0%, Ni:0.3%
~ 0.8%, surplus is Fe.
2. the preparation method of a gas turbine blower Blade Steel material, it is characterised in that its preparation methods steps is as follows:
Step A, by elemental composition proportioning alloyage, by non-vacuum induction furnace melting homogenization, smelting temperature is 1500 ~
1550 DEG C, fusion process regulates the content of each element so that it is weight ratio meets design requirement, makes molten steel；
Step B, the molten steel of step A is blended in LF external refining stove and carries out refine, make refined molten steel；
Step C, by the refined molten steel of step B, be positioned over VD refining furnace vacuum degassing with further refine, sampling point after broken sky
Analysis, adjusting component, make high-quality molten steel；
Step D, by the high-quality molten steel of step C, use bet method to pour into electrode bar；
Step E, using the electrode bar of step D as electrode, be positioned in electroslag furnace and carry out secondary remelting purification, formed ESR ingot；
Step F, ESR ingot step E made, be heated to 1180 DEG C ~ 1200 DEG C, is incubated 30h, pulls out through two upsettings two with press,
Make steel billet；
Step G, steel billet step F made make annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, after insulation 1 ~ 2h
Forging is become a useful person, and slow cooling；
Step H, step G is forged after section bar carry out heat treatment after forging: be cooled to slowly after forging surface temperature 150 DEG C ~
180 DEG C, entering stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, be incubated 6h/100mm, stove is cooled to 660 ~ 680 DEG C, is heated to 720
DEG C, it is incubated 24h/100mm, then stove is cooled to 500 DEG C, air cooling of coming out of the stove, and prepares material requested.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: step
In rapid A, melting molten steel is carried out in non-vacuum induction furnace.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: step
In rapid B, external refining is carried out in LF stove.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: step
In rapid C, external refining is carried out in VD stove, adds 0.5kg/ ton rare earth element ce before tapping.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: step
In rapid F, 2000T quick forging machine is used to forge.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: step
In rapid G, annealing is carried out in car type furnace.
The preparation method of a kind of gas turbine blower Blade Steel material the most according to claim 2, it is characterised in that: institute
Stating impurity is: in terms of percentage by weight %, and N≤0.01%, in preparation process, N content controls at≤18ppm.
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| CN106381374A (en) * | 2016-11-30 | 2017-02-08 | 四川六合锻造股份有限公司 | Method for improving transverse impact toughness of 1Cr12Ni3Mo2VN |
| CN108118243A (en) * | 2017-12-11 | 2018-06-05 | 四川六合锻造股份有限公司 | A kind of high heat-resisting steel alloy material of manganese austenite type and preparation method thereof |
| CN109402490A (en) * | 2019-01-04 | 2019-03-01 | 四川六合锻造股份有限公司 | A method of improving the high-temperature behavior of Blade Steel containing Nb |
| CN110283963A (en) * | 2019-07-31 | 2019-09-27 | 四川六合特种金属材料股份有限公司 | A kind of production technology of 1Cr11MoV Blade Steel |
| CN111270129A (en) * | 2018-12-05 | 2020-06-12 | 兴化市聚鑫不锈钢有限公司 | Novel alloy wear-resistant material for mine hydraulic equipment |
| CN115821147A (en) * | 2022-12-06 | 2023-03-21 | 四川六合特种金属材料股份有限公司 | Method for improving purity and structure uniformity of mirror surface die steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381374A (en) * | 2016-11-30 | 2017-02-08 | 四川六合锻造股份有限公司 | Method for improving transverse impact toughness of 1Cr12Ni3Mo2VN |
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| CN109402490A (en) * | 2019-01-04 | 2019-03-01 | 四川六合锻造股份有限公司 | A method of improving the high-temperature behavior of Blade Steel containing Nb |
| CN109402490B (en) * | 2019-01-04 | 2020-12-11 | 四川六合特种金属材料股份有限公司 | Method for improving high-temperature performance of Nb-containing blade steel |
| CN110283963A (en) * | 2019-07-31 | 2019-09-27 | 四川六合特种金属材料股份有限公司 | A kind of production technology of 1Cr11MoV Blade Steel |
| CN115821147A (en) * | 2022-12-06 | 2023-03-21 | 四川六合特种金属材料股份有限公司 | Method for improving purity and structure uniformity of mirror surface die steel |
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