CN104099516A - High-temperature resistant turbine blade and production process thereof - Google Patents
High-temperature resistant turbine blade and production process thereof Download PDFInfo
- Publication number
- CN104099516A CN104099516A CN201410303092.0A CN201410303092A CN104099516A CN 104099516 A CN104099516 A CN 104099516A CN 201410303092 A CN201410303092 A CN 201410303092A CN 104099516 A CN104099516 A CN 104099516A
- Authority
- CN
- China
- Prior art keywords
- turbine blade
- temperature
- stove
- cooling
- tempering
- 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.)
- Granted
Links
Abstract
The invention discloses a high-temperature resistant turbine blade. The turbine blade comprises the following chemical components in percentage by weight: 0.19-0.21% of C, 0.55-0.57% of Mn, 0.20-0.22% of Si, 0.38-0.40% of Al, 0.30-0.32% of V, 0.40-0.42% of Ti, 0.12-0.14% of Ni, 0.06-0.08% of Sn, 0.25-0.27% of Zr, no more than 0.025% of S, no more than 0.025% of P, no more than 0.20% of Cu, 0.20-0.22% of lanthanide serial rare earth, and the balance Fe. The invention further designs a production process of the turbine blade. The production process has the advantages of simplicity and low cost, helps to largely improve the impact toughness of the blade, enhance the high temperature resistance of the blade and prolong the service life of the blade through the nitridation surface treatment.
Description
Technical field
The present invention relates to a kind of turbine blade and production technique thereof, specifically a kind of high temperature resistant turbine blade and production technique thereof.
Background technology
Steam turbine is one of the three large main frames in fuel-burning power plant, and it is undertaking the main task that heat energy is converted into mechanical energy, and its running condition directly affects the efficiency of heat engine and the safety of unit.
Steam turbine is a kind of revolving hydrodynamic force machinery, and it directly plays a part to change the heat energy of steam or combustion gas into mechanical energy, and blade is the vital part of steam turbine, is again one of the most accurate, most important part.The Working environment of turbine blade is complicated and changeable, and it bears high temperature, high pressure, huge centrifugal force, steam power, steam exciting force, corrosion and vibration and the acting in conjunction of wet-steam region water droplet erosion under utmost point exacting terms.At high temperature the mechanical property of the turbine blade of metal can significantly decrease, be mainly manifested in the tension of material, antitorque, the equicohesive degradation of antifatigue, yet when blade is under high temperature for a long time, the weave construction of blade interior can change, cause growth, the polymerization in intergranular cavity, produce high temperature creep and destroy.Creep failure under long-time hot conditions is the typical hot strength problem of metallic substance.Creep is that long-time continuous high temperature lower member generation tension set loses function so that finally ruptures.In addition, bear the significantly variation of repeatedly start and stop and output load in steam turbine operation process, the periodicity strong variations of vapor temperature, can cause the low cycle fatigue of metallic substance, causes losing efficacy.Creep and low cycle fatigue all affect component life, and both exist Non-linear coupling.
In addition, blade not only quantity is many, and complex-shaped, and processing request is strict.The labor content of blade is very large, accounts for 1/4th to 1/3rd of steam turbine, the total amount of finish of internal combustion turbine.The processing quality of blade directly has influence on operational efficiency and the reliable rows of unit, and the processing mode of the quality of blade and life-span and blade has close relationship.So the processing mode of blade has a great impact the work quality of steam turbine and production economy.Along with scientific and technical development, the processing means of blade is also with rapid changepl. never-ending changes and improvements, and advanced processing technology extensively adopts.Meet the application that the use properties demand improving constantly only relies on new blade material and be still difficult to meet, just can reach blade tool high-level efficiency, high precision and the requirement of high life in the middle of various heat treatment technicss must being applied to the manufacture of turbine blade.
Summary of the invention
Technical problem to be solved by this invention is how to make the internal stress of mechanical workout rear blade discharge completely, avoids the modified thermal treatment of postorder high temperature to produce distortion or crackle, thereby improves its resistance to elevated temperatures; How to make turbine blade guarantee the poly-premium propertiess such as good hardness, stability, ductility and workability that have; How to improve the work-ing life of turbine blade.
The technical scheme that the present invention solves above technical problem is:
A high temperature resistant turbine blade, the weight percent chemical composition of this turbine blade is: C:0.19-0.21%, Mn:0.55-0.57%, Si:0.20-0.22%, Al:0.38-0.40%, V:0.30-0.32%, Ti:0.40-0.42%, Ni:0.12-0.14%, Sn:0.06-0.08%, Zr:0.25-0.27%, S≤0.025%, P≤0.025%, Cu≤0.20%, lanthanide rare: 0.20-0.22%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15-17%, and cerium: 21-23%, praseodymium: 20-22%, neodymium: 18-20%, dysprosium: 13-15%, all the other lanthanon: 7-9%, each component sum of above lanthanide rare is 100%.
The production technique of above-mentioned high temperature resistant turbine blade, by following operation, undertaken: base → forging → thermal treatment → blade mechanism processing → stabilization treatment → modified thermal treatment → cooling → surfaces nitrided processing → subsequent survey warehouse-in, concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
Select abrasive cut off machine efficiency high, avoid the danger that occurs that thermal stresses raises, again in heats forged, can not crack, when cutting, adopt water to carry out cooling, the impact of heat of friction on blank end face while reducing cutting, the degree of depth of the heat affected layer of minimizing cut place;
(2) while forging, first forging die is preheated to 182-184 ℃ and adopt mould graphite mould lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 706-708 ℃, final forging temperature is 811-813 ℃, obtains turbine blade work in-process;
Adopt graphite mould lubricant to there is better effect than the lubricant of available technology adopting molybdenumdisulphide type, molybdenumdisulphide type lubricity when excess Temperature degenerates, oxidizable, and the oxygenolysis temperature of graphite is higher than molybdenumdisulphide, utilize lubricant that blank and mould are kept apart, by lubricant, form liquid friction, blank is avoided and die surface generation direct friction, reduce resistance to deformation, prevent forging sticking to mould;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout;
Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 9-11 minute in turbine blade work in-process stove heat during to 750-760 ℃, then stove is cooled to 260-265 ℃, opens subsequently fire door and continues slow cooling to the 150-160 ℃ of air cooling of coming out of the stove to room temperature;
B quenches: by the slow stove heat of turbine blade work in-process after annealing in step a, to 450-455 ℃ and be incubated 0.5-1h, stove heat is to water spray turbine blade work in-process fast cooling after 550-555 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after stove stove heat are incubated 11-13 minute after to 240-245 ℃ to come out of the stove air cooling to room temperature again;
Adopt higher temperature tempering better than low-temperaturetempering, can make like this tissue stable, prevent the stress corrosion in use procedure, be conducive to work long hours, and be convenient to mechanical workout;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 850-860 ℃, insulation 15-18 minute, carries out subsequently air cooling or stove and is chilled to room temperature, and stabilization treatment can be eliminated stainless intergranular corrosion tendency;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: formal fiery temperature 745-747 ℃ is incubated 9-11min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 876-878 ℃, to the rear insulation of temperature 12-14min, second segment Heating temperature is 805-807 ℃, after temperature, is incubated 9-11min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 750-752 ℃ of heating, to the rear insulation of temperature 19-21min, second segment Heating temperature is 720-722 ℃ of heating, after temperature, is incubated 8-10min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled of 5-7 ℃/s to 395-397 ℃, then air cooling is to 304-306 ℃, adopt again water-cooled with the rate of cooling of 3-5 ℃/s by rod iron water-cooled to 255-257 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 525-527 ℃, keep obtaining for 20-22 hour final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The technical scheme that the present invention further limits is:
In aforementioned high temperature resistant turbine blade, the weight percent chemical composition of this turbine blade is: C:0.20%, Mn:0.55%, Si:0.20%, Al:0.40%, V:0.30%, Ti:0.42%, Ni:0.13%, Sn:0.08%, Zr:0.26%, S:0.025%, P:0.015%, Cu:0.20%, lanthanide rare: 0.21%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15%, and cerium: 21%, praseodymium: 21%, neodymium: 20%, dysprosium: 14%, all the other lanthanon: 9%, each component sum of above lanthanide rare is 100%.
In aforementioned high temperature resistant turbine blade, the weight percent chemical composition of this turbine blade is: C:0.21%, Mn:0.57%, Si:0.21%, Al:0.38%, V:0.32%, Ti:0.40%, Ni:0.14%, Sn:0.06%, Zr:0.25%, S:0.010%, P:0.009%, Cu:0.10%, lanthanide rare: 0.22%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 16%, and cerium: 22%, praseodymium: 22%, neodymium: 19%, dysprosium: 13%, all the other lanthanon: 8%, each component sum of above lanthanide rare is 100%.
In aforementioned high temperature resistant turbine blade, the weight percent chemical composition of this turbine blade is: C:0.19%, Mn:0.56%, Si:0.22%, Al:0.39%, V:0.31%, Ti:0.41%, Ni:0.12%, Sn:0.07%, Zr:0.27%, S:0.012%, P:0.020%, Cu:0.15%, lanthanide rare: 0.20%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 17%, and cerium: 23%, praseodymium: 20%, neodymium: 18%, dysprosium: 15%, all the other lanthanon: 7%, each component sum of above lanthanide rare is 100%.
The production technique of aforementioned high temperature resistant turbine blade, it is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 182 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 708 ℃, and final forging temperature is 812 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 10 minutes when turbine blade work in-process stove heat to 760 ℃, then stove is cooled to 263 ℃, opens subsequently fire door and continues slow cooling to 150 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 450 after annealing in step a ℃ and be incubated 0.8h, and water spray turbine blade work in-process fast cooling after stove heat to 553 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 12 minutes after stove stove heat to 245 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 855 ℃, be incubated 18 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 746 ℃ of formal fiery temperature are incubated 10min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 877 ℃, to the rear insulation of temperature 12min, second segment Heating temperature is 805 ℃, after temperature, is incubated 9min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 751 ℃ of heating, to the rear insulation of temperature 20min, second segment Heating temperature is 721 ℃ of heating, after temperature, is incubated 9min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 396 ℃ of 6 ℃/s, then air cooling to 304 ℃, adopt again water-cooled with the rate of cooling of 4 ℃/s by rod iron water-cooled to 256 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 527 ℃, keep obtaining for 21 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The production technique of aforementioned high temperature resistant turbine blade, it is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 184 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 706 ℃, and final forging temperature is 811 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 9 minutes when turbine blade work in-process stove heat to 750 ℃, then stove is cooled to 260 ℃, opens subsequently fire door and continues slow cooling to 160 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 455 after annealing in step a ℃ and be incubated 0.5h, and water spray turbine blade work in-process fast cooling after stove heat to 550 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 11 minutes after stove stove heat to 240 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 850 ℃, be incubated 15 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 747 ℃ of formal fiery temperature are incubated 11min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 876 ℃, to the rear insulation of temperature 14min, second segment Heating temperature is 807 ℃, after temperature, is incubated 11min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 750 ℃ of heating, to the rear insulation of temperature 19min, second segment Heating temperature is 720 ℃ of heating, after temperature, is incubated 8min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 397 ℃ of 5 ℃/s, then air cooling to 305 ℃, adopt again water-cooled with the rate of cooling of 3 ℃/s by rod iron water-cooled to 255 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 526 ℃, keep obtaining for 20 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The production technique of aforementioned high temperature resistant turbine blade, it is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 183 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 707 ℃, and final forging temperature is 813 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 11 minutes when turbine blade work in-process stove heat to 755 ℃, then stove is cooled to 265 ℃, opens subsequently fire door and continues slow cooling to 155 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 452 after annealing in step a ℃ and be incubated 1h, and water spray turbine blade work in-process fast cooling after stove heat to 555 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 13 minutes after stove stove heat to 243 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 860 ℃, be incubated 16 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 745 ℃ of formal fiery temperature are incubated 9min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 878 ℃, to the rear insulation of temperature 13min, second segment Heating temperature is 806 ℃, after temperature, is incubated 10min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 752 ℃ of heating, to the rear insulation of temperature 21min, second segment Heating temperature is 722 ℃ of heating, after temperature, is incubated 10min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 395 ℃ of 7 ℃/s, then air cooling to 306 ℃, adopt again water-cooled with the rate of cooling of 5 ℃/s by rod iron water-cooled to 257 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 525 ℃, keep obtaining for 22 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
In the production technique of aforementioned high temperature resistant turbine blade, while adopting abrasive cut off machine to cut turbine blade blank in step (1), adopt water cooling; Step (2) is first lubricated forging die while forging, and adopts graphite mould lubricant to be lubricated when lubricated.
The invention has the beneficial effects as follows:
In the present invention, added lanthanide rare: 0.20-0.22%, lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15-17%, cerium: 21-23%, praseodymium: 20-22%, neodymium: 18-20%, dysprosium: 13-15%, all the other lanthanon: 7-9%, each component sum of above lanthanide rare is 100%.Because the metallic atomic radius of above rare earth element is larger than the atomic radius of iron, be easy to fill up in its crystal grain and defect, and generation can hinder the film of crystal grain continued growth, thereby make grain refining and improve the performance of steel, meanwhile, rare earth element easily and oxygen, sulphur, the high compound of lead and other elements chemical combination generation fusing point, can play the effect that purifies steel, by adding rare earth metal, can effectively weaken the segregation phenomenon of blade, can increase substantially the impact toughness of blade.
The present invention is not cooling immediately after forge hot, but is incubated 9-11 minute in turbine blade work in-process stove heat during to 750-760 ℃, and then stove is cooled to 260-265 ℃, opens subsequently fire door and continues slow cooling to the 150-160 ℃ of air cooling of coming out of the stove to room temperature; Make like this austenite at this temperature, carry out isothermal transformation, form perlite, Ovshinsky physical efficiency completes the transformation of ball light body within a short period of time, avoids forming martensite, causes steel hardening, thereby makes blade be unlikely to much higher hard or too low; In addition, by cooling after twice insulation, it is more even that equal turbidity changes the Qiu Guang body tissue forming, and avoids forming incomplete same tissue, can prevent the early stage brittle cracking of blade, played beyond thought technique effect.
Blade of the present invention is due to the effect of alloying element (such as titanium elements), the macrosegregation of carbon and alloying element, and blade there will be eutectic carbides, thereby reduces the impact toughness of blade; The present invention is by adding lanthanide rare metal and temperature to control, thereby the segregation phenomenon of blade is obviously weakened, and can increase substantially the impact toughness of blade.
Because blade working district is wet-steam region, and contain a large amount of water droplets, erosion blade under very high rim velocity and centrifugal force, makes vane tip leading edge produce spot corrosion and lost efficacy, and the height of blade water erosion resistent ability directly has influence on working efficiency and the safe operation of steam turbine; The present invention coordinates refrigerating work procedure by modified heat treatment step, can make blade surface produce the thick tempered martensite of 3-5mm, its water erosion resistent ability effectively improving; In addition, tempering temperature is less than temperature poor that tempering temperature for the first time can reduce surface and heart portion for the second time, makes vane thickness direction fine microstructures even; After normalizing, tempering further reduces the poor of surface and the temperature of heart portion, thereby makes surperficially to reach unanimity to heart portion performance; Cooling after tempering, the method of being combined with air cooling by water-cooled, first with speed of cooling water-cooled faster, then carry out air cooling, finally pass through again slower cooling by water to room temperature, not only can improve the water erosion resistent ability of blade, and can make to organize more uniform and stable, seldom there is pore and trachoma, guaranteed the corrosion resistance of blade, played beyond thought technique effect.
Thereby the present invention improves the hardness on turbine blade surface and the use birthday noodle that wear resisting property has also improved blade by surfaces nitrided processing, obtains good comprehensive mechanical property and corrosion resistance, the blade that can at high temperature use.
Embodiment
Embodiment 1
The present embodiment provides a kind of high temperature resistant turbine blade, and the weight percent chemical composition of this turbine blade is: C:0.20%, Mn:0.55%, Si:0.20%, Al:0.40%, V:0.30%, Ti:0.42%, Ni:0.13%, Sn:0.08%, Zr:0.26%, S:0.025%, P:0.015%, Cu:0.20%, lanthanide rare: 0.21%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15%, and cerium: 21%, praseodymium: 21%, neodymium: 20%, dysprosium: 14%, all the other lanthanon: 9%, each component sum of above lanthanide rare is 100%.
The production technique of the high temperature resistant turbine blade of the present embodiment, is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank, cutting is to adopt water to carry out cooling;
(2) while forging, first forging die is preheated to 182 ℃ and adopt die lubricant graphite mould lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 708 ℃, final forging temperature is 812 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 10 minutes when turbine blade work in-process stove heat to 760 ℃, then stove is cooled to 263 ℃, opens subsequently fire door and continues slow cooling to 150 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 450 after annealing in step a ℃ and be incubated 0.8h, and water spray turbine blade work in-process fast cooling after stove heat to 553 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 12 minutes after stove stove heat to 245 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 855 ℃, be incubated 18 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 746 ℃ of formal fiery temperature are incubated 10min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 877 ℃, to the rear insulation of temperature 12min, second segment Heating temperature is 805 ℃, after temperature, is incubated 9min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 751 ℃ of heating, to the rear insulation of temperature 20min, second segment Heating temperature is 721 ℃ of heating, after temperature, is incubated 9min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 396 ℃ of 6 ℃/s, then air cooling to 304 ℃, adopt again water-cooled with the rate of cooling of 4 ℃/s by rod iron water-cooled to 256 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 527 ℃, keep obtaining for 21 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The salient features of turbine blade of the present invention is as shown in the table:
Table 1:
Embodiment 2
The present embodiment provides a kind of high temperature resistant turbine blade, and the weight percent chemical composition of this turbine blade is: C:0.21%, Mn:0.57%, Si:0.21%, Al:0.38%, V:0.32%, Ti:0.40%, Ni:0.14%, Sn:0.06%, Zr:0.25%, S:0.010%, P:0.009%, Cu:0.10%, lanthanide rare: 0.22%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 16%, and cerium: 22%, praseodymium: 22%, neodymium: 19%, dysprosium: 13%, all the other lanthanon: 8%, each component sum of above lanthanide rare is 100%.
The production technique of the high temperature resistant turbine blade of the present embodiment, is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank, during cutting, water carries out cooling;
(2) while forging, first forging die is preheated to 184 ℃ and adopt die lubricant graphite mould lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 706 ℃, final forging temperature is 811 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 9 minutes when turbine blade work in-process stove heat to 750 ℃, then stove is cooled to 260 ℃, opens subsequently fire door and continues slow cooling to 160 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 455 after annealing in step a ℃ and be incubated 0.5h, and water spray turbine blade work in-process fast cooling after stove heat to 550 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 11 minutes after stove stove heat to 240 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 850 ℃, be incubated 15 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 747 ℃ of formal fiery temperature are incubated 11min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 876 ℃, to the rear insulation of temperature 14min, second segment Heating temperature is 807 ℃, after temperature, is incubated 11min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 750 ℃ of heating, to the rear insulation of temperature 19min, second segment Heating temperature is 720 ℃ of heating, after temperature, is incubated 8min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 397 ℃ of 5 ℃/s, then air cooling to 305 ℃, adopt again water-cooled with the rate of cooling of 3 ℃/s by rod iron water-cooled to 255 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 526 ℃, keep obtaining for 20 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The salient features of turbine blade of the present invention is as shown in the table:
Table 2:
Embodiment 3
The present embodiment provides a kind of high temperature resistant turbine blade, and the weight percent chemical composition of this turbine blade is: C:0.19%, Mn:0.56%, Si:0.22%, Al:0.39%, V:0.31%, Ti:0.41%, Ni:0.12%, Sn:0.07%, Zr:0.27%, S:0.012%, P:0.020%, Cu:0.15%, lanthanide rare: 0.20%, surplus is Fe;
Lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 17%, and cerium: 23%, praseodymium: 20%, neodymium: 18%, dysprosium: 15%, all the other lanthanon: 7%, each component sum of above lanthanide rare is 100%.
The production technique of the high temperature resistant turbine blade of the present embodiment, is undertaken by following operation, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank, during cutting, water carries out cooling;
(2) while forging, first forging die is preheated to 183 ℃ and adopt die lubricant graphite mould lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 707 ℃, final forging temperature is 813 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 11 minutes when turbine blade work in-process stove heat to 755 ℃, then stove is cooled to 265 ℃, opens subsequently fire door and continues slow cooling to 155 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 452 after annealing in step a ℃ and be incubated 1h, and water spray turbine blade work in-process fast cooling after stove heat to 555 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 13 minutes after stove stove heat to 243 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 860 ℃, be incubated 16 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 745 ℃ of formal fiery temperature are incubated 9min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 878 ℃, to the rear insulation of temperature 13min, second segment Heating temperature is 806 ℃, after temperature, is incubated 10min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 752 ℃ of heating, to the rear insulation of temperature 21min, second segment Heating temperature is 722 ℃ of heating, after temperature, is incubated 10min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 395 ℃ of 7 ℃/s, then air cooling to 306 ℃, adopt again water-cooled with the rate of cooling of 5 ℃/s by rod iron water-cooled to 257 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 525 ℃, keep obtaining for 22 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The salient features of turbine blade of the present invention is as shown in the table:
Table 3:
In above operation: forging, blade mechanism processing, subsequent survey warehouse-in (physical and chemical inspection, UT (Ultrasonic Testing) and clean packing) are all used existing conventional process.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. a high temperature resistant turbine blade, is characterized in that, the weight percent chemical composition of this turbine blade is: C:0.19-0.21%, Mn:0.55-0.57%, Si:0.20-0.22%, Al:0.38-0.40%, V:0.30-0.32%, Ti:0.40-0.42%, Ni:0.12-0.14%, Sn:0.06-0.08%, Zr:0.25-0.27%, S≤0.025%, P≤0.025%, Cu≤0.20%, lanthanide rare: 0.20-0.22%, surplus is Fe;
Described lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15-17%, and cerium: 21-23%, praseodymium: 20-22%, neodymium: 18-20%, dysprosium: 13-15%, all the other lanthanon: 7-9%, each component sum of above lanthanide rare is 100%.
2. high temperature resistant turbine blade according to claim 1, is characterized in that: the weight percent chemical composition of this turbine blade is: C:0.20%, Mn:0.55%, Si:0.20%, Al:0.40%, V:0.30%, Ti:0.42%, Ni:0.13%, Sn:0.08%, Zr:0.26%, S:0.025%, P:0.015%, Cu:0.20%, lanthanide rare: 0.21%, surplus is Fe;
Described lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 15%, and cerium: 21%, praseodymium: 21%, neodymium: 20%, dysprosium: 14%, all the other lanthanon: 9%, each component sum of above lanthanide rare is 100%.
3. high temperature resistant turbine blade according to claim 1, is characterized in that: the weight percent chemical composition of this turbine blade is: C:0.21%, Mn:0.57%, Si:0.21%, Al:0.38%, V:0.32%, Ti:0.40%, Ni:0.14%, Sn:0.06%, Zr:0.25%, S:0.010%, P:0.009%, Cu:0.10%, lanthanide rare: 0.22%, surplus is Fe;
Described lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 16%, and cerium: 22%, praseodymium: 22%, neodymium: 19%, dysprosium: 13%, all the other lanthanon: 8%, each component sum of above lanthanide rare is 100%.
4. high temperature resistant turbine blade according to claim 1, is characterized in that: the weight percent chemical composition of this turbine blade is: C:0.19%, Mn:0.56%, Si:0.22%, Al:0.39%, V:0.31%, Ti:0.41%, Ni:0.12%, Sn:0.07%, Zr:0.27%, S:0.012%, P:0.020%, Cu:0.15%, lanthanide rare: 0.20%, surplus is Fe;
Described lanthanide rare constituent mass per-cent chemical composition is: lanthanum: 17%, and cerium: 23%, praseodymium: 20%, neodymium: 18%, dysprosium: 15%, all the other lanthanon: 7%, each component sum of above lanthanide rare is 100%.
5. the production technique of high temperature resistant turbine blade as claimed in claim 1, it is characterized in that, by following operation, undertaken: base → forging → thermal treatment → blade mechanism processing → stabilization treatment → modified thermal treatment → cooling → surfaces nitrided processing → subsequent survey warehouse-in, concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 182-184 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 706-708 ℃, final forging temperature is 811-813 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout;
Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 9-11 minute in turbine blade work in-process stove heat during to 750-760 ℃, then stove is cooled to 260-265 ℃, opens subsequently fire door and continues slow cooling to the 150-160 ℃ of air cooling of coming out of the stove to room temperature;
B quenches: by the slow stove heat of turbine blade work in-process after annealing in step a, to 450-455 ℃ and be incubated 0.5-1h, stove heat is to water spray turbine blade work in-process fast cooling after 550-555 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after stove stove heat are incubated 11-13 minute after to 240-245 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 850-860 ℃, insulation 15-18 minute, carries out subsequently air cooling or stove and is chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: formal fiery temperature 745-747 ℃ is incubated 9-11min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 876-878 ℃, to the rear insulation of temperature 12-14min, second segment Heating temperature is 805-807 ℃, after temperature, is incubated 9-11min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 750-752 ℃ of heating, to the rear insulation of temperature 19-21min, second segment Heating temperature is 720-722 ℃ of heating, after temperature, is incubated 8-10min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled of 5-7 ℃/s to 395-397 ℃, then air cooling is to 304-306 ℃, adopt again water-cooled with the rate of cooling of 3-5 ℃/s by rod iron water-cooled to 255-257 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 525-527 ℃, keep obtaining for 20-22 hour final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
6. the production technique of high temperature resistant turbine blade as claimed in claim 5, is characterized in that, by following operation, is undertaken, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 182 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 708 ℃, and final forging temperature is 812 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 10 minutes when turbine blade work in-process stove heat to 760 ℃, then stove is cooled to 263 ℃, opens subsequently fire door and continues slow cooling to 150 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 450 after annealing in step a ℃ and be incubated 0.8h, and water spray turbine blade work in-process fast cooling after stove heat to 553 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 12 minutes after stove stove heat to 245 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 855 ℃, be incubated 18 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 746 ℃ of formal fiery temperature are incubated 10min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 877 ℃, to the rear insulation of temperature 12min, second segment Heating temperature is 805 ℃, after temperature, is incubated 9min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 751 ℃ of heating, to the rear insulation of temperature 20min, second segment Heating temperature is 721 ℃ of heating, after temperature, is incubated 9min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 396 ℃ of 6 ℃/s, then air cooling to 304 ℃, adopt again water-cooled with the rate of cooling of 4 ℃/s by rod iron water-cooled to 256 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 527 ℃, keep obtaining for 21 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
7. the production technique of high temperature resistant turbine blade as claimed in claim 5, is characterized in that, by following operation, is undertaken, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 184 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 706 ℃, and final forging temperature is 811 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 9 minutes when turbine blade work in-process stove heat to 750 ℃, then stove is cooled to 260 ℃, opens subsequently fire door and continues slow cooling to 160 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 455 after annealing in step a ℃ and be incubated 0.5h, and water spray turbine blade work in-process fast cooling after stove heat to 550 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 11 minutes after stove stove heat to 240 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 850 ℃, be incubated 15 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 747 ℃ of formal fiery temperature are incubated 11min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 876 ℃, to the rear insulation of temperature 14min, second segment Heating temperature is 807 ℃, after temperature, is incubated 11min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 750 ℃ of heating, to the rear insulation of temperature 19min, second segment Heating temperature is 720 ℃ of heating, after temperature, is incubated 8min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 397 ℃ of 5 ℃/s, then air cooling to 305 ℃, adopt again water-cooled with the rate of cooling of 3 ℃/s by rod iron water-cooled to 255 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 526 ℃, keep obtaining for 20 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
8. the production technique of high temperature resistant turbine blade as claimed in claim 5, is characterized in that, by following operation, is undertaken, and concrete operations are as follows:
(1) selected weight percent chemical composition is passed through to smelting, hot rolling and the cooling turbine blade blank of making in steel mill, with abrasive cut off machine, blank is cut, after cutting, on crank press, squeeze bar, swaging shaping, obtain turbine blade forming blank;
(2) while forging, first forging die is preheated to 183 ℃ and adopt die lubricant to be lubricated forging die, adopt the forging die after preheating is also lubricated to forge the forming blank in step (1), blocking temperature is 707 ℃, and final forging temperature is 813 ℃, obtains turbine blade work in-process;
(3) the turbine blade work in-process that obtain after forging in step (2) are heat-treated and the turbine blade work in-process after thermal treatment are carried out to mechanical workout; Heat treated concrete operations are as follows:
A annealing: after forging, be incubated 11 minutes when turbine blade work in-process stove heat to 755 ℃, then stove is cooled to 265 ℃, opens subsequently fire door and continues slow cooling to 155 ℃ and come out of the stove air cooling to room temperature;
B quenches: by the slow stove of the turbine blade work in-process heat to 452 after annealing in step a ℃ and be incubated 1h, and water spray turbine blade work in-process fast cooling after stove heat to 555 ℃ again;
C tempering: the turbine blade work in-process after quenching are at room temperature entered after being incubated 13 minutes after stove stove heat to 243 ℃ to come out of the stove air cooling to room temperature again;
(4) the turbine blade work in-process after machined are carried out to stabilization treatment and be heated to 860 ℃, be incubated 16 minutes, carry out subsequently air cooling or stove and be chilled to room temperature;
(5) the turbine blade work in-process after stabilized processing in step (4) are carried out to modified thermal treatment: adopt one time normalizing+double tempering, tempering temperature is greater than tempering temperature for the second time for the first time; Normalizing: 745 ℃ of formal fiery temperature are incubated 9min after temperature; Tempering for the first time: adopt zone heating, first paragraph Heating temperature is 878 ℃, to the rear insulation of temperature 13min, second segment Heating temperature is 806 ℃, after temperature, is incubated 10min, then air cooling carries out normalizing for the second time to room temperature; Tempering for the second time: adopt zone heating, first paragraph Heating temperature is 752 ℃ of heating, to the rear insulation of temperature 21min, second segment Heating temperature is 722 ℃ of heating, after temperature, is incubated 10min;
(6) to the turbine blade work in-process cool to room temperature after tempering for the second time in step (5), cooling employing water-cooled is combined with air cooling, first adopt water-cooled with the cooling turbine blade work in-process water-cooled to 395 ℃ of 7 ℃/s, then air cooling to 306 ℃, adopt again water-cooled with the rate of cooling of 5 ℃/s by rod iron water-cooled to 257 ℃, last air cooling is to room temperature;
(7) gas nitriding processing is carried out in the surface of cooled turbine blade finished product in step (6), turbine blade work in-process are positioned in gas nitriding furnace and in stove and pass into NH
3, stove is warming up to 525 ℃, keep obtaining for 22 hours final turbine blade finished product;
(8) the turbine blade finished product obtaining is put in storage finally by clean packing through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
9. according to the production technique of the high temperature resistant turbine blade described in arbitrary claim in claim 5-8, it is characterized in that: while adopting abrasive cut off machine to cut turbine blade blank in step (1), adopt water cooling; Step (2) is first lubricated forging die while forging, and adopts graphite mould lubricant to be lubricated when lubricated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303092.0A CN104099516B (en) | 2014-06-27 | 2014-06-27 | A kind of high temperature resistant turbine blade and production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303092.0A CN104099516B (en) | 2014-06-27 | 2014-06-27 | A kind of high temperature resistant turbine blade and production technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104099516A true CN104099516A (en) | 2014-10-15 |
| CN104099516B CN104099516B (en) | 2016-08-17 |
Family
ID=51668050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410303092.0A Active CN104099516B (en) | 2014-06-27 | 2014-06-27 | A kind of high temperature resistant turbine blade and production technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104099516B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911458A (en) * | 2015-04-27 | 2015-09-16 | 苏州劲元油压机械有限公司 | Hydraulic pump body casting process |
| CN106224009A (en) * | 2016-08-30 | 2016-12-14 | 南京赛达机械制造有限公司 | The turbine blade of a kind of band damping structure and Technology for Heating Processing thereof |
| CN106282662A (en) * | 2016-08-31 | 2017-01-04 | 南京惠德机械有限公司 | A kind of corrosion-resistant fixture |
| CN106350746A (en) * | 2016-08-30 | 2017-01-25 | 苏州利德精工制造有限公司 | Textile machine shooting-in and connecting rod and heat treatment technology |
| CN106834958A (en) * | 2016-12-16 | 2017-06-13 | 苏州富艾姆工业设备有限公司 | A kind of high-strength abrasion-proof universal joint and its Technology for Heating Processing |
| CN107084288A (en) * | 2017-04-27 | 2017-08-22 | 无锡市华尔泰机械制造有限公司 | A kind of 316L stainless steel materials flange and its forging technology |
| CN107841707A (en) * | 2017-10-31 | 2018-03-27 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of 31CrMoV9 gears |
| CN107937864A (en) * | 2017-10-31 | 2018-04-20 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of compressor 35CrMoV gear high bearing capacities |
| CN108301877A (en) * | 2017-09-30 | 2018-07-20 | 南京赛达机械制造有限公司 | A kind of high temperature resistant turbine blade |
| CN108624783A (en) * | 2018-06-08 | 2018-10-09 | 南京赛达机械制造有限公司 | A kind of high strength titanium alloy turbine blade |
| CN108868895A (en) * | 2018-06-08 | 2018-11-23 | 南京赛达机械制造有限公司 | A kind of high strength titanium alloy blade of aviation engine |
| CN109536677A (en) * | 2018-11-28 | 2019-03-29 | 青岛毅凯重型锻造有限公司 | The production technology of steam turbine forging |
| CN110227907A (en) * | 2019-06-03 | 2019-09-13 | 嘉兴市恒工精密机械有限公司 | A kind of processing method of high accurate speed reducer gland |
| CN111151695A (en) * | 2019-12-31 | 2020-05-15 | 太原重工股份有限公司 | Forging heat treatment process of valve rod for steam turbine with material of 30Cr2Ni4MoV |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041450A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Ferrite heat resisting steel and manufacture method thereof |
| CN102560275A (en) * | 2010-12-28 | 2012-07-11 | 株式会社东芝 | Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine |
| CN103160733A (en) * | 2013-03-11 | 2013-06-19 | 济钢集团有限公司 | Steel plate for nuclear power station pressure vessel and equipment gate, and manufacturing method thereof |
-
2014
- 2014-06-27 CN CN201410303092.0A patent/CN104099516B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041450A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Ferrite heat resisting steel and manufacture method thereof |
| CN102560275A (en) * | 2010-12-28 | 2012-07-11 | 株式会社东芝 | Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine |
| CN103160733A (en) * | 2013-03-11 | 2013-06-19 | 济钢集团有限公司 | Steel plate for nuclear power station pressure vessel and equipment gate, and manufacturing method thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911458A (en) * | 2015-04-27 | 2015-09-16 | 苏州劲元油压机械有限公司 | Hydraulic pump body casting process |
| CN106224009A (en) * | 2016-08-30 | 2016-12-14 | 南京赛达机械制造有限公司 | The turbine blade of a kind of band damping structure and Technology for Heating Processing thereof |
| CN106350746A (en) * | 2016-08-30 | 2017-01-25 | 苏州利德精工制造有限公司 | Textile machine shooting-in and connecting rod and heat treatment technology |
| CN106282662A (en) * | 2016-08-31 | 2017-01-04 | 南京惠德机械有限公司 | A kind of corrosion-resistant fixture |
| CN106834958A (en) * | 2016-12-16 | 2017-06-13 | 苏州富艾姆工业设备有限公司 | A kind of high-strength abrasion-proof universal joint and its Technology for Heating Processing |
| CN107084288A (en) * | 2017-04-27 | 2017-08-22 | 无锡市华尔泰机械制造有限公司 | A kind of 316L stainless steel materials flange and its forging technology |
| CN108301877A (en) * | 2017-09-30 | 2018-07-20 | 南京赛达机械制造有限公司 | A kind of high temperature resistant turbine blade |
| CN108301877B (en) * | 2017-09-30 | 2023-12-12 | 南京赛达机械制造有限公司 | High temperature resistant turbine blade |
| CN107937864A (en) * | 2017-10-31 | 2018-04-20 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of compressor 35CrMoV gear high bearing capacities |
| CN107841707A (en) * | 2017-10-31 | 2018-03-27 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of 31CrMoV9 gears |
| CN107937864B (en) * | 2017-10-31 | 2019-11-22 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of compressor 35CrMoV gear high bearing capacity |
| CN107841707B (en) * | 2017-10-31 | 2019-11-22 | 沈阳透平机械股份有限公司 | The deep ion nitriding process of 31CrMoV9 gear |
| CN108624783A (en) * | 2018-06-08 | 2018-10-09 | 南京赛达机械制造有限公司 | A kind of high strength titanium alloy turbine blade |
| CN108868895A (en) * | 2018-06-08 | 2018-11-23 | 南京赛达机械制造有限公司 | A kind of high strength titanium alloy blade of aviation engine |
| CN109536677A (en) * | 2018-11-28 | 2019-03-29 | 青岛毅凯重型锻造有限公司 | The production technology of steam turbine forging |
| CN110227907A (en) * | 2019-06-03 | 2019-09-13 | 嘉兴市恒工精密机械有限公司 | A kind of processing method of high accurate speed reducer gland |
| CN111151695A (en) * | 2019-12-31 | 2020-05-15 | 太原重工股份有限公司 | Forging heat treatment process of valve rod for steam turbine with material of 30Cr2Ni4MoV |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104099516B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099516A (en) | High-temperature resistant turbine blade and production process thereof | |
| CN103154293B (en) | The case hardening steel of forging excellence and manufacture method thereof | |
| JP5497884B2 (en) | Nitritable steel composition for the production of piston rings and cylinder liners | |
| CN104060191B (en) | A kind of turbine blade and production technique thereof improving impact toughness | |
| CN102433513B (en) | Preparation and heat treatment method of low-alloy heat-resistant high-strength steel memebers | |
| CN102505098B (en) | Low-alloy heat-resistant high-strength steel and member thereof | |
| CN101545076A (en) | Martensite refractory stainless steel and manufacturing method thereof | |
| CN104946994B (en) | Preparation method for nano-crystallization low-alloy heat-resistant high-strength steel mould | |
| CN102234744A (en) | Ultra-pure alloy and method for manufacturing turbine rotor forging by using same | |
| CN103045949B (en) | Large marine high strength corrosion-resistant stainless-steel exhaust valve seat with internal orifice diameter of larger than 220 mm | |
| CN103468887A (en) | Heat treatment method of alloy steel after forging | |
| CN105154786A (en) | Wear-resistant vanadium-titanium gear and preparation method thereof | |
| CN103993233B (en) | A kind of long-life die casting die steel and the process of manufacture magnalium compression mod | |
| CN103740913A (en) | High-temperature forged martensitic stainless steel heat treatment method | |
| CN104032236A (en) | Turbine blade capable of improving thermal cracking resistance and production process thereof | |
| CN104032239B (en) | A kind of corrosion-resistant turbine blade and production technique thereof | |
| CN104131227A (en) | Low-alloy heat-resisting steel pipe and manufacturing method thereof | |
| CN104060192B (en) | A kind of turbine blade and production technique thereof improving water erosion resistent ability | |
| CN103572176A (en) | Low-carbon martensite steel and method for preparing flying ring using same | |
| CN102876981A (en) | Method for preparing medium and low carbon chrome-silicon-manganese martensite cast steel with hardening surface layer | |
| CN102383050A (en) | Cr-Ni based high temperature-resistant oxyaustenitic heat-resistant steel bar and preparation method thereof | |
| CN104046919B (en) | A kind of high life turbine blade and production technique thereof | |
| JP5912778B2 (en) | Gears with excellent peel resistance and impact fatigue resistance | |
| CN104178691A (en) | High-strength steel for metallurgical saw blades and heat treatment method thereof | |
| CN103614521A (en) | Medium carbon steel material large diesel engine output shaft tempering process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |