CN106119731B - 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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- CN106119731B CN106119731B CN201610760876.5A CN201610760876A CN106119731B CN 106119731 B CN106119731 B CN 106119731B CN 201610760876 A CN201610760876 A CN 201610760876A CN 106119731 B CN106119731 B CN 106119731B
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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 Fe.Preparation method is：Using non-vacuum induction furnace melting, LF external refinings, VD refining furnaces, electroslag, obtain pure uniform ingot casting, and the heating, forging and heat treatment for passing through optimization obtain gas turbine blower blade Steel material, the material has preferable 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 work(KV2 >=60J, side knock work(KV2 >=45J, low vertically and horizontally performance difference（≤20%）And low FATT50（≤30℃）, 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, 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 important component of thermal energy as kinetic energy in gas turbine, and blade is subjected to top load work
With also subject to centrifugal force, the ringing of twisting resistance, so blade material should have high intensity index, what is also had is tough
Property index, especially to material lateral performance, vertically and horizontally the requirement of mechanical property difference it is very high, and since it is as gas turbine
Machine engine provides high pressure gas, the difference of air inlet temperature, that is, environment temperature, it is desirable that material has low ductile-brittle transiton temperature
Degree and FATT50.Country's Blade Steel is difficult to the requirement for meeting compressor blade at present, mostly by import, to combustion gas turbine
Localization has an adverse effect, therefore the development production domesticization of compressor blade steel is of great significance.
And the strength of materials that current gas turbine blower Blade Steel material preparation method is produced is low, without good disconnected
Toughness is split, and the horizontal mechanical performance of material and anticorrosion stress-resistant performance are low, in use, the tensile strength of material is small
In 800Mpa；Yield strength is again smaller than 650N/mm2；Elongation is less than 15%；The contraction percentage of area is less than 50%；Impact of collision work(
Less than 60J；Side knock work(is less than 45J, and the nitrogen content in material is more than 20ppm, and the service life for 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 that intensity is low, toughness is also very low, longitudinal direction and horizontal stroke
It is uneven to performance.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of gas turbine blower blade Steel material
And preparation method thereof, meet the 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
Weight percent 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 Fe.
Preparation methods steps are as follows：
Step A, alloyage is matched by above-mentioned elemental composition, is homogenized by non-vacuum induction furnace melting, smelting temperature
It is 1500 ~ 1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；
Step B, the molten steel of step A is blended into LF external refining stoves and refined, refined molten steel is made；
Step C, by the refined molten steel of step B, the vacuum degassing of VD refining furnaces is positioned over further to refine, and is sampled after broken sky
High-quality molten steel is made in analysis, adjusting component；
Step D, by the high-quality molten steel of step C, electrode bar is poured into using bet method；
Step E, using the electrode bar of step D as electrode, progress secondary remelting purification in electroslag furnace is positioned over, forms electroslag
Ingot；
Step F, by ESR ingot made of step E, 1180 DEG C ~ 1200 DEG C are heated to, keeps the temperature 30h, passes through two upsettings with press
Two pull out, and steel billet is made；
Step G, steel billet made of step F is made annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, heat preservation 1 ~
Forging is become a useful person, and slow cooling after 2h；
Step H, the section bar after step G is forged carries out heat treatment after forging：Surface temperature 150 is slowly cooled to after forging
DEG C ~ 180 DEG C, enter stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, keep the temperature 6h/100mm, be furnace-cooled to 660 ~ 680 DEG C, be heated to
720 DEG C, for 24 hours/100mm is kept the temperature, 500 DEG C is then furnace-cooled to, comes out of the stove air-cooled, material requested is made.
Preferably, in step A, melting molten steel carries out in non-vacuum induction furnace.
Preferably, in step B, external refining carries out in LF stoves.
Preferably, in step C, external refining carries out in VD stoves, and 0.5kg/ tons of rare earth element ces are added in before tapping.
Preferably, it in step F, is forged using 2000T quick forging machines.
Preferably, it in step G, makes annealing treatment and is carried out in car type furnace.
Preferably, the impurity is：In terms of weight percent %, N≤0.01%, in preparation process N content control≤
18ppm。
The beneficial effects of the invention are as follows：This kind of gas turbine blower blade Steel material and preparation method thereof is prepared stainless
Steel material even tissue, external refining carry out in VD stoves, add in 0.5kg/ tons of rare earth element ces before tapping, improve the pure of material
Cleanliness makes gas turbine blower blade Steel material plasticity and impact flexibility enhancing under low temperature, room temperature and high-temperature condition, uses
2000T quick forging machines are forged and are pulled out by two upsettings two, make leaf tissue uniform, have excellent fracture toughness, good
Horizontal mechanical performance；The high-strength high-ductility stainless steel material is produced by the present invention, is had 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 work(KV2 >=60J,
Side knock work(KV2 >=45J, low vertically and horizontally performance difference（≤20%）And low FATT50（≤30℃）, 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 suitble to push away
It is wide to use.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, 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 is
Fe；
Preparation methods steps are as follows：
Step A, alloyage is matched by above-mentioned elemental composition, is homogenized by non-vacuum induction furnace melting, smelting temperature
It is 1500 ~ 1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；
Step B, the molten steel of step A is blended into LF external refining stoves and refined, refined molten steel is made；
Step C, by the refined molten steel of step B, the vacuum degassing of VD refining furnaces is positioned over further to refine, and is sampled after broken sky
High-quality molten steel is made in analysis, adjusting component；
Wherein, external refining carries out in VD stoves, and 0.5kg/ tons of rare earth element ces are added in before tapping；
Step D, by the high-quality molten steel of step C, electrode bar is poured into using bet method；
Step E, using the electrode bar of step D as electrode, progress secondary remelting purification in electroslag furnace is positioned over, forms electroslag
Ingot；
Step F, by ESR ingot made of step E, 1180 DEG C ~ 1200 DEG C are heated to, keeps the temperature 30h, passes through two upsettings with press
Two pull out, and steel billet is made；
Wherein, it is forged using 2000T quick forging machines；
Step G, steel billet made of step F is made annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, heat preservation 1 ~
Forging is become a useful person, and slow cooling after 2h；
Step H, the section bar after step G is forged carries out heat treatment after forging：Surface temperature 150 is slowly cooled to after forging
DEG C ~ 180 DEG C, enter stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, keep the temperature 6h/100mm, be furnace-cooled to 660 ~ 680 DEG C, be heated to
720 DEG C, for 24 hours/100mm is kept the temperature, 500 DEG C is then furnace-cooled to, comes out of the stove air-cooled, material requested is made.
The impurity is：In terms of weight percent %, N≤0.01%, N content control is in≤18ppm in preparation process.
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 remaining
Measure Fe；Match alloyage by above-mentioned elemental composition, homogenized by non-vacuum induction furnace melting, smelting temperature for 1500 ~
1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；Molten steel is converted
Enter and refined in LF external refining stoves, refined molten steel is made；By refined molten steel, the vacuum degassing of VD refining furnaces is positioned over into one
Step refining, breaks sampling analysis after sky, and high-quality molten steel is made in adjusting component；Wherein, external refining carries out in VD stoves, before tapping
Add in 0.5kg/ tons of rare earth element ces；By high-quality molten steel, electrode bar is poured into using bet method；Using electrode bar as electrode, put
Progress secondary remelting purification in electroslag furnace is placed in, forms ESR ingot；By manufactured ESR ingot, 1180 DEG C ~ 1200 DEG C are heated to, is protected
Warm 30h is pulled out by two upsettings two with press, steel billet is made；Wherein, it is forged using 2000T quick forging machines；By manufactured steel billet into
Row annealing by heating steel billet to 1140 DEG C ~ 1160 DEG C, is forged after 1 ~ 2h of heat preservation and is become a useful person, and slow cooling；By the section bar after forging
Carry out heat treatment after forging：150 DEG C ~ 180 DEG C of surface temperature is slowly cooled to after forging, enters stove and is heated with the speed of 100 DEG C/h
To 980 DEG C, 6h/100mm is kept the temperature, is furnace-cooled to 660 ~ 680 DEG C, be heated to 720 DEG C, kept the temperature for 24 hours/100mm, be then furnace-cooled to 500
DEG C, it comes out of the stove air-cooled, material requested is made.
The impurity is：In terms of weight percent %, N≤0.01%, N content control is in 18ppm in preparation process.
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 remaining
Measure Fe；Match alloyage by above-mentioned elemental composition, homogenized by non-vacuum induction furnace melting, smelting temperature for 1500 ~
1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；Molten steel is converted
Enter and refined in LF external refining stoves, refined molten steel is made；By refined molten steel, the vacuum degassing of VD refining furnaces is positioned over into one
Step refining, breaks sampling analysis after sky, and high-quality molten steel is made in adjusting component；Wherein, external refining carries out in VD stoves, before tapping
Add in 0.5kg/ tons of rare earth element ces；By high-quality molten steel, electrode bar is poured into using bet method；Using electrode bar as electrode, put
Progress secondary remelting purification in electroslag furnace is placed in, forms ESR ingot；By manufactured ESR ingot, 1180 DEG C ~ 1200 DEG C are heated to, is protected
Warm 30h is pulled out by two upsettings two with press, steel billet is made；Wherein, it is forged using 2000T quick forging machines；By manufactured steel billet into
Row annealing by heating steel billet to 1140 DEG C ~ 1160 DEG C, is forged after 1 ~ 2h of heat preservation and is become a useful person, and slow cooling；By the section bar after forging
Carry out heat treatment after forging：150 DEG C ~ 180 DEG C of surface temperature is slowly cooled to after forging, enters stove and is heated to the speed of 90 DEG C/h
980 DEG C, 6h/100mm is kept the temperature, is furnace-cooled to 660 ~ 680 DEG C, be heated to 720 DEG C, kept the temperature for 24 hours/100mm, be then furnace-cooled to 500 DEG C,
It comes out of the stove air-cooled, material requested is made.
The impurity is：In terms of weight percent %, N≤0.01%, N content control is in≤15ppm in preparation process.
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 remaining
Measure Fe；Match alloyage by above-mentioned elemental composition, homogenized by non-vacuum induction furnace melting, smelting temperature for 1500 ~
1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；Molten steel is converted
Enter and refined in LF external refining stoves, refined molten steel is made；By refined molten steel, the vacuum degassing of VD refining furnaces is positioned over into one
Step refining, breaks sampling analysis after sky, and high-quality molten steel is made in adjusting component；Wherein, external refining carries out in VD stoves, before tapping
Add in 0.5kg/ tons of rare earth element ces；By high-quality molten steel, electrode bar is poured into using bet method；Using electrode bar as electrode, put
Progress secondary remelting purification in electroslag furnace is placed in, forms ESR ingot；By manufactured ESR ingot, 1180 DEG C ~ 1200 DEG C are heated to, is protected
Warm 30h is pulled out by two upsettings two with press, steel billet is made；Wherein, it is forged using 2000T quick forging machines；By manufactured steel billet into
Row annealing by heating steel billet to 1140 DEG C ~ 1160 DEG C, is forged after 1 ~ 2h of heat preservation and is become a useful person, and slow cooling；By the section bar after forging
Carry out heat treatment after forging：150 DEG C ~ 180 DEG C of surface temperature is slowly cooled to after forging, enters stove and is heated to the speed of 95 DEG C/h
980 DEG C, 6h/100mm is kept the temperature, is furnace-cooled to 660 ~ 680 DEG C, be heated to 720 DEG C, kept the temperature for 24 hours/100mm, be then furnace-cooled to 500 DEG C,
It comes out of the stove air-cooled, material requested is made.
The impurity is：In terms of weight percent %, N≤0.01%, N content control is in≤16ppm in preparation process.
According to alloy material prepared by embodiment one, embodiment two and embodiment three, pass through gas turbine blower blade
Stainless steel material even tissue prepared by Steel material and preparation method thereof, external refining carry out in VD stoves, are added in before tapping
0.5kg/ tons of rare earth element ces improve the degree of purity of material, make gas turbine blower blade Steel material in low temperature, room temperature and height
Plasticity and impact flexibility enhancing, are forged using 2000T quick forging machines and are pulled out by two upsettings two, make leaf tissue equal in the case of temperature
Uniformly, there is excellent fracture toughness, good horizontal mechanical performance；The high-strength high-ductility stainless steel is produced by the present invention
Material has in addition to high intensity, tensile strength sigma b >=800MPa, yield strength σ 0.02 >=650, elongation percentage >=15%, section
Shrinking percentage >=50%, impact of collision work(KV2 >=60J, side knock work(KV2 >=45J, low vertically and horizontally performance difference（≤20%）With
And low FATT50（≤30℃）, meeting the performance requirement of combustion gas compressor blade makes material have excellent impact flexibility.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any label in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
- A kind of 1. preparation method of gas turbine blower blade Steel material, which is characterized in that the element of the blade Steel material It forms and is：In terms of weight percent %, 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：The .8% of 0 .3% ~ 0, surplus are Fe and inevitably miscellaneous Matter；Preparation methods steps are as follows：Step A, match alloyage by elemental composition, homogenized by non-vacuum induction furnace melting, smelting temperature for 1500 ~ 1550 DEG C, the content of each element is adjusted in fusion process, its weight ratio is made to meet design requirement, molten steel is made；Step B, the molten steel of step A is blended into LF external refining stoves and refined, refined molten steel is made；Step C, by the refined molten steel of step B, the vacuum degassing of VD refining furnaces is positioned over further to refine, and breaks sampling point after sky High-quality molten steel is made in analysis, adjusting component；Step D, by the high-quality molten steel of step C, electrode bar is poured into using bet method；Step E, using the electrode bar of step D as electrode, progress secondary remelting purification in electroslag furnace is positioned over, forms ESR ingot；Step F, by ESR ingot made of step E, 1180 DEG C ~ 1200 DEG C are heated to, 30h is kept the temperature, is pulled out with press by two upsettings two, Steel billet is made；Step G, steel billet made of step F is made annealing treatment, by heating steel billet to 1140 DEG C ~ 1160 DEG C, after keeping the temperature 1 ~ 2h Forging is become a useful person, and slow cooling；Step H, the section bar after step G is forged carries out heat treatment after forging：Slowly be cooled to after forging 150 DEG C of surface temperature ~ 180 DEG C, enter stove and be heated to 980 DEG C with the speed of≤100 DEG C/h, keep the temperature 6h/100mm, be furnace-cooled to 660 ~ 680 DEG C, be heated to 720 DEG C, for 24 hours/100mm is kept the temperature, 500 DEG C is then furnace-cooled to, comes out of the stove air-cooled, material requested is made.
- 2. a kind of preparation method of gas turbine blower blade Steel material according to claim 1, it is characterised in that：Step In rapid C, 0 .5kg/ tons of rare earth element ce is added in before tapping.
- 3. a kind of preparation method of gas turbine blower blade Steel material according to claim 1, it is characterised in that：Step In rapid F, forged using 2000T quick forging machines.
- 4. a kind of preparation method of gas turbine blower blade Steel material according to claim 1, it is characterised in that：Step In rapid G, make annealing treatment and carried out in car type furnace.
- 5. a kind of preparation method of gas turbine blower blade Steel material according to claim 1, it is characterised in that：Institute Stating impurity is：In terms of weight percent %, the .01% of N≤0, N content control is less than or equal to 18ppm in preparation process.
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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 |
| CN108118243B (en) * | 2017-12-11 | 2020-06-23 | 四川六合特种金属材料股份有限公司 | High-manganese austenitic heat-resistant steel alloy material and preparation method thereof |
| 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 |
| 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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| CN102864382B (en) * | 2012-07-26 | 2014-06-04 | 四川六合锻造股份有限公司 | Method for reducing X20Cr13 longitudinal and transverse mechanical property differences |
| CN105839026A (en) * | 2016-05-21 | 2016-08-10 | 四川六合锻造股份有限公司 | Blade steel material for compressor of gas turbine and preparation method of blade steel material |
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