CN113061709A - Design method of gradient heat treatment furnace with accurately controllable temperature gradient and double-tissue disc piece - Google Patents
Design method of gradient heat treatment furnace with accurately controllable temperature gradient and double-tissue disc piece Download PDFInfo
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- CN113061709A CN113061709A CN202110176454.4A CN202110176454A CN113061709A CN 113061709 A CN113061709 A CN 113061709A CN 202110176454 A CN202110176454 A CN 202110176454A CN 113061709 A CN113061709 A CN 113061709A
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- 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
- C21D11/00—Process control or regulation for heat treatments
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
Abstract
The invention belongs to the field of heat treatment of metal materials. Discloses a design method of a double-tissue disc piece gradient heat treatment furnace with accurately controllable temperature gradient. The gradient heat treatment furnace comprises an opening and closing travelling mechanism, a split furnace body, an electric heating element, a thermocouple, a heating/cooling module, an upper heat insulation cylinder, a lower heat insulation cylinder, a workpiece and a moving trolley; the middle top and bottom heating/cooling modules can efficiently realize the temperature rise process of the hub part and realize the cooling control operation of the hub part at a high-temperature stage. The annular heating body of the furnace body heats the rim, and the central heating/cooling functional module carries out hub temperature control, so that the gradient heat treatment of the rim and the hub of the disc part in a wide temperature range of 50-400 ℃ can be realized, and the disc part can be uniformly heated and effectively controlled in temperature under a large temperature gradient, and the temperature gradient is accurate and controllable. Compared with the traditional heat treatment method, the invention realizes that the rim/hub part of the high-temperature alloy disc part has a coarse/fine grain dual-performance structure.
Description
Technical Field
The invention relates to the field of heat treatment of metal materials. In particular to a design method of a gradient heat treatment furnace with a double-structure disc component, the temperature gradient of which can be accurately controlled.
Background
The high-temperature alloy turbine disc part is a key part of a core hot end of an aerospace engine and directly determines the thrust-weight ratio and the service reliability of the aerospace engine. In the service process of the turbine disk, the hub and the rim of the turbine disk have different structure performances due to the difference of temperature impact and stress load bearing. The hub is required to have a smaller grain size (the grain size of the hub is 10-11 grades) due to bearing high stress and low temperature so as to ensure high yield strength, tensile strength and low cycle fatigue performance, while the rim is required to bear low stress and high temperature so as to have a larger grain size (the grain size of the rim is 5-6 grades) so as to ensure high durability, high creep strength and high damage tolerance capability, thereby obtaining optimal mechanical properties and meeting the performance requirements of the rim and the hub part of the high-temperature alloy turbine disk part under high-temperature service.
The above-mentioned structural properties require the turbine disk to be subjected to a gradient heat treatment, which is contrary to the conventional heat treatment furnace for obtaining a uniform temperature field. The conventional heat treatment equipment can realize heat treatment at uniform temperature, and a single chamber is adopted for a heat treatment part, so that the overall uniform heat treatment process is realized. At present, heat treatment equipment for realizing precise and controllable gradient heat treatment aiming at two different temperatures is not developed at home. The document "chinese patent publication No. CN 102643958A" discloses a gradient heat treatment device for a disc. The device is cooled by respectively arranging a cooling box on the upper furnace body and the lower furnace body to be filled with heat conducting salt, and the furnace wall is provided with a resistance band to realize heating, so that the larger temperature gradient of the disc-shaped piece can be obtained. But the device can't effectively realize the convenient blowing of industrial production disc spare, and disc spare has great temperature gradient simultaneously, can't effectively realize the function of heating and effective accuse temperature, can't effectively obtain less temperature gradient and to the accurate control between the temperature gradient interval. Therefore, the invention provides a design method of a gradient heat treatment furnace for a double-structure disc part with accurately controllable temperature gradient, which realizes the gradient heat treatment process of an industrial large-size high-temperature alloy disc part, realizes the accurate controllability of the temperature gradient of a wheel rim and a wheel hub part, and promotes the realization of the preparation of a coarse/fine grain double-performance structure of the wheel rim/wheel hub part of a turbine disc part in China.
Disclosure of Invention
The invention aims to provide a design method of a gradient heat treatment furnace with a double-structure disc component, which can accurately control the temperature gradient and mainly solves the technical problems that: the industrial large-size disc workpiece convenient for gradient heat treatment is taken and placed, uniform heating can be realized, the gradient heat treatment can be kept for a long time, and the temperature gradient can be accurately controlled in a wider temperature range.
The specific technical scheme is as follows: the gradient heat treatment furnace comprises an opening and closing travelling mechanism, a furnace body, an electric heating element, a rim temperature thermocouple, a top heating/cooling module, a hub temperature thermocouple, an upper cover, an upper heat insulation barrel, a workpiece, a lower heat insulation barrel, a bottom heating and cooling module and a lifting trolley; wherein, the workpiece is a disc piece to be heat treated, pushed by a lifting trolley and lifted into the furnace; the furnace body is a plane opening and closing structure and is closed into a cylindrical furnace body by two semicircular structures, and the two semicircular furnace bodies are connected by an intermediate rotating shaft; the electric heating elements are uniformly distributed in the furnace body to form an annular heating body, and the electric heating elements are used for heating the temperature of the rim of the workpiece;
the rim temperature thermocouple is used for measuring the temperature in the furnace and displaying the rim temperature, and the thermocouples are uniformly distributed in the upper and lower heat insulation cylinders and the circumference of the furnace body and used for measuring the rim temperature of the workpiece; the hub temperature thermocouple is used for measuring the temperature of the inner part of the furnace and measuring the hub temperature of the workpiece;
the upper and lower heat insulation cylinders separate the hub part and the rim part of the workpiece;
the electric heating element is connected with the rim temperature thermocouple and is heated by a silicon carbide rod to realize rapid temperature rise in the furnace;
the top heating/cooling module and the bottom heating/cooling module are used for heating/cooling the temperature of the inner hub of the workpiece, the heating/cooling module is connected with a hub temperature thermocouple, and rapid temperature rise and gas cooling in the furnace are realized through resistance wire heating and argon gas cooling, so that the temperature control of the hub part of the workpiece is realized;
a lifting device is arranged on the lifting trolley, after the workpiece on the movable trolley is arranged on the lifting device, the heating furnace is opened, the trolley is pushed into the furnace, and after the workpiece is lifted to a heating position, the two furnace bodies are closed for heating; after the workpieces meet the process requirements, the two furnace doors are opened to drop the workpieces, and the heating workpieces are pushed out by the trolley.
The gradient heat treatment steps of the heat treatment furnace are as follows:
The electric heating element is heated by a silicon carbide rod, four annular areas are distributed and arranged, and the uniform heating process is realized.
8 thermocouples are respectively arranged in the upper and lower heat insulation cylinders to realize the temperature control and measurement of the rim.
The upper and lower heat insulation barrels are designed according to the thickness and the diameter, the positions of a heat insulation workpiece wheel rim hot area and a wheel hub cold area can be set, and gradient heat treatment at different positions is realized.
The top and bottom heating/cooling modules are used for heating through resistance wires and cooling through argon gas, so that the temperature control functions of heating and cooling of the hub part are achieved.
4 thermocouples are respectively arranged on the top heating/cooling module and the bottom heating/cooling module, so that the accurate temperature control and temperature measurement operation of the hub is realized.
The upper and lower surfaces of the workpiece are filled with ceramic fiber felt or high silica brick heat insulation materials for heat insulation.
The method realizes the heat treatment temperature of 850-1050 ℃ for the hub part and 1000-1200 ℃ for the rim part, and further realizes long-time heat treatment of the disc part in a wider temperature gradient.
Compared with the prior art, the invention has the advantages and beneficial effects that:
(1) the furnace body of the invention adopts a mode of opening and closing the two halves of the whole furnace body, thereby facilitating the taking out and the entering of the heating workpiece. And facilitate inspection of the performance of various components within the furnace
(2) The upper and lower heat insulation cylinders separately heat the center and the outer part of the heating workpiece, so that the temperature difference between the middle part and the outer part of the heating workpiece forms a gradient, and different heat treatment process requirements of the hub and the rim part of the heating workpiece are met.
(3) According to the heating/cooling module, central heating and argon purging are realized through the resistance wires to realize gas cooling, the temperature rise process of the hub part can be efficiently realized, and the cooling control operation of the hub part is realized at a high-temperature stage. The annular heating body of the furnace body heats the rim, and the central heating/cooling functional module carries out hub temperature control, so that the gradient heat treatment of the rim and the hub of the disc part in a wide temperature range of 50-400 ℃ can be realized, and the disc part can be uniformly heated and effectively controlled in temperature under a large temperature gradient, and the temperature gradient is accurate and controllable.
(4) Compared with the traditional heat treatment method, the invention effectively realizes the gradient heat treatment of the industrial-grade large-size high-temperature alloy disc part and realizes that the rim/hub part of the high-temperature alloy disc part has a coarse/fine grain dual-performance structure.
Drawings
FIG. 1 is a schematic view of a gradient heat treatment furnace with a double-structure disk member;
FIG. 2 is a view of a rotating fan blade;
FIG. 3 is an upper insulating cartridge;
FIG. 4 is a heating/cooling module;
FIG. 5 is a grain structure picture of GH720Li alloy under conventional heat treatment;
FIG. 6 is a picture of a coarse/fine grain dual-performance structure of GH720Li alloy under gradient heat treatment; (a) the hub part has a fine grain structure (grain size is 10-11 grade), and can bear high stress and low temperature so as to ensure high yield strength, tensile strength and low cycle fatigue performance; (b) the wheel rim part coarse grain structure (grain size 5-6 grade) can bear low stress and high temperature so as to ensure high endurance performance, high creep strength and high damage tolerance capability, and thus the optimal mechanical property of the disc piece is obtained.
In the figure: 1, an opening and closing travelling mechanism; 2, a furnace body; 3 an electric heating element; 4, a wheel rim temperature thermocouple; 5 a top heating/cooling module; 6, a hub temperature thermocouple; 7, covering the upper cover; 8, an upper heat insulation cylinder; 9, workpiece; 10 lower heat insulation cylinders; 11 a bottom heating/cooling module; 12 lifting the trolley.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific embodiments, to which, however, the scope of the invention is not limited.
Example 1:
the material of the embodiment is nickel-based superalloy with nominal composition GH720Li, and compared with the disc part structure obtained by the traditional heat treatment process (see figure 5), the rim/hub part of the GH720Li disc part prepared by the embodiment has coarse/fine grain dual-performance structure (see figure 6).
The gradient heat treatment comprises the following specific implementation steps:
charging: opening the annular heating furnace body through horizontal translation of the cylinder, loading a disc workpiece, and closing the annular heating furnace body;
gradient heat treatment: and a heating power supply is turned on, the simultaneous rapid heating is realized through the annular heating body and the central heating module, the diameter of the heat insulation ring ensures the heat insulation effect and enables the high-temperature area to be at the 50mm position of the wheel rim, and when the temperature rises to 600 ℃, the gas cooling process is realized through the argon gas inflation tube which is uniformly distributed in the temperature control process, so that the accurate controllability of the 850 ℃ heat treatment temperature of the wheel hub part is realized. Meanwhile, the temperature of the rim part is rapidly increased to 1150 ℃ through a resistance silicon carbide rod of the annular heating body, gradient heat treatment at the temperature of 300 ℃ with large temperature gradient is realized through the annular heating body and the central heating/cooling module, and the power supply is turned off after the heat treatment time is up;
discharging: after the disc workpiece is cooled to room temperature, the annular heating furnace body is opened through horizontal translation of the air cylinder, the heat treatment disc workpiece is lifted by utilizing the supporting structure at the central part of the furnace body, the disc workpiece is taken out, the annular heating furnace body is closed, and gradient heat treatment on the disc workpiece is completed.
The embodiment can realize gradient heat treatment of the rim and the hub part of the disc part at the large temperature gradient of 300 ℃, the heating temperature of the rim part is 1150 ℃, the heating temperature of the hub part is 850 ℃, the heat treatment time is 4 hours, the device has the characteristics of uniform temperature and accurate and controllable temperature gradient, and the annular resistance heating furnace main body is convenient for taking and placing industrial large-size disc workpieces subjected to gradient heat treatment. The equipment requirement is low, the GH720Li alloy disc piece with high quality, low cost, phi 800 multiplied by 150mm in size and coarse/fine grain dual-performance organization at the rim/hub part can be obtained, the rim part is ensured to have high durability, high creep strength and high damage tolerance capability, the hub part is ensured to have high yield strength, tensile strength and low cycle fatigue performance, and the performance requirement of the rim and the hub part of the high-temperature alloy turbine disc piece under high-temperature service is met.
Example 2:
the difference from example 1 is: in the embodiment, the disc part rim and the hub part are subjected to gradient heat treatment at a small temperature gradient of 200 ℃, the heating temperature of the rim part is 1150 ℃, the heating temperature of the hub part is 950 ℃, and the heat treatment time is 4 hours. Meanwhile, the thickness of the heat insulation baffle ring is changed, the heat insulation effect is ensured, the high-temperature area is positioned at the position of 80mm of the wheel rim, the control of a small temperature gradient interval of 200 ℃ between the wheel rim and the wheel hub is realized, and other gradient heat treatment steps and process parameters are the same as those of the embodiment 1. The rim/hub part of the GH720Li alloy disc prepared by the embodiment also has a coarse/fine grain dual-performance structure, and the position of the gradient structure is changed.
Example 3:
the difference from example 1 is: in the embodiment, the gradient heat treatment of the rim and the hub part of the disc part with the size of phi 800 multiplied by 160mm can be realized under the small temperature gradient of 100 ℃, the heating temperature of the rim part is 1150 ℃, the heating temperature of the hub part is 1050 ℃, and the heat treatment time is 4 h. Meanwhile, the thickness of the heat insulation baffle ring is changed, the heat insulation effect is guaranteed, the high-temperature area is located at the position of 100mm of the wheel rim, the control of a small temperature gradient area of 100 ℃ between the wheel rim and the wheel hub is realized, and other gradient heat treatment steps and process parameters are the same as those of the embodiment 1. The rim/hub part of the GH720Li alloy disk part prepared by the embodiment also has a coarse/fine grain dual-performance structure, the thickness of the disk part is increased, the local stress level is reduced, and the structure stability of the GH720Li alloy turbine disk part under high-temperature work is ensured.
In combination with the above detailed description of the present invention, it can be seen that the present invention has at least the following advantageous technical effects over the prior art:
(1) the central part of the annular heating body adopts a supporting structure to lift the heat-treated disc workpiece, has a central limiting function, and is convenient for picking and placing industrial large-size disc workpieces;
(2) the annular heating body of the furnace body heats the wheel rim, and the central heating/cooling functional module performs hub temperature control, so that the gradient heat treatment of the wheel rim and the hub part of the disc part in a wide temperature range of 50-400 ℃ can be realized, and the uniform heating temperature, the efficient heating, the effective temperature control and the accurate and controllable temperature gradient of the disc part under a larger temperature gradient can be realized.
(3) Compared with the traditional heat treatment method, the invention effectively realizes the gradient heat treatment of the industrial-grade large-size high-temperature alloy disc part and realizes that the rim/hub part of the high-temperature alloy disc part has a coarse/fine grain dual-performance structure.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention.
Claims (8)
1. The design method of the gradient heat treatment furnace for the double-organization disc part with the accurately controllable temperature gradient is characterized by comprising an opening and closing travelling mechanism (1), a furnace body (2), an electric heating element (3), a rim temperature thermocouple (4), a top heating/cooling module (5), a hub temperature thermocouple (6), an upper cover (7), an upper heat insulation barrel (8), a workpiece (9), a lower heat insulation barrel (10), a bottom heating/cooling module (11) and a lifting trolley (12); wherein, the workpiece (9) is a disc piece to be heat treated, pushed by a lifting trolley (12) and lifted into the furnace; the furnace body (2) is a plane opening and closing structure and is closed into a cylindrical furnace body by two semicircular structures, and the two semicircular furnace bodies are connected by an intermediate rotating shaft; the electric heating elements (3) are uniformly distributed in the furnace body to form an annular heating body, and the electric heating elements (3) are used for heating the temperature of the rim of the workpiece (9);
the rim temperature thermocouple (4) is used for measuring the temperature in the furnace and displaying the rim temperature, and thermocouples are uniformly distributed in the circumferences of the upper and lower heat insulation cylinders and the furnace body (2) and used for measuring the rim temperature of the workpiece (9); the hub temperature thermocouple (6) is used for measuring the temperature of the inner part of the furnace and measuring the hub temperature of the workpiece (9);
the upper and lower heat insulation cylinders separate the hub part and the rim part of the workpiece (9);
the electric heating element (3) is connected with the rim temperature thermocouple (4) and is heated by a silicon carbide rod to realize rapid temperature rise in the furnace;
the top heating/cooling module (5) and the bottom heating/cooling module (11) are used for heating/cooling the temperature of the inner hub of the workpiece, the heating/cooling modules are connected with a hub temperature thermocouple (6), and rapid temperature rise and gas cooling in the furnace are realized through resistance wire heating and argon gas cooling, so that the temperature control of the hub part of the workpiece (9) is realized;
a lifting device is arranged on the lifting trolley (12), after the workpiece on the movable trolley is arranged on the lifting device, the heating furnace is opened, the trolley is pushed into the furnace, and after the workpiece is lifted to a heating position, the two furnace bodies are closed for heating; after the workpieces meet the process requirements, opening two furnace doors to drop the workpieces, and pushing out the heated workpieces by using a trolley;
the gradient heat treatment steps of the heat treatment furnace are as follows:
step 1, charging: the annular heating furnace body (2) is opened through horizontal translation of the cylinder, a disc workpiece is loaded into the annular heating furnace body through the lifting trolley (12), and the annular heating furnace body (2) is closed;
step 2, gradient heat treatment: a heating power supply is turned on, the simultaneous and rapid temperature rise is realized through an electric heating element (3) arranged on the outer ring of a workpiece (9) and a top and bottom heating/cooling module arranged in the center of the workpiece (9), the diameter of a heat insulation cylinder ensures the heat insulation effect at the moment, a high-temperature area is arranged at a set position of a wheel rim, when the temperature rises to a set temperature, the top and bottom heating/cooling modules perform heating through resistance wires and perform a gas cooling process through argon gas inflation pipes which are uniformly distributed, and the accurate controllability of the heat treatment temperature of the wheel hub part is realized; meanwhile, the temperature of the rim part is quickly raised to a target temperature through the electric heating element (3), gradient heat treatment with large temperature gradient is realized through the annular heating body and the heating/cooling modules at the top and the bottom of the center, and a power supply is turned off after the heat treatment time is up;
step 3, discharging: after the disc workpiece is cooled to room temperature, the annular heating furnace body is opened through horizontal translation of the air cylinder, the heat treatment disc workpiece is lifted by utilizing the supporting structure at the central part of the furnace body, the disc workpiece is taken out, the annular heating furnace body is closed, and gradient heat treatment on the disc workpiece is completed.
2. The design method of the double-organization disc piece gradient heat treatment furnace with the accurately controllable temperature gradient according to claim 1, characterized in that the electric heating element (3) is heated by a silicon carbide rod, four annular areas are distributed and arranged, and a uniform heating process is realized.
3. The design method of the gradient heat treatment furnace with the double-tissue disc piece and the accurately controllable temperature gradient according to claim 1 is characterized in that 8 thermocouples are respectively arranged in the upper heat insulation cylinder and the lower heat insulation cylinder to realize the temperature control and temperature measurement operation of the wheel rim.
4. The design method of the double-organization disc piece gradient heat treatment furnace with the accurately controllable temperature gradient according to claim 1, characterized in that the upper and lower heat insulation barrels are designed through thickness and diameter, and can set positions of a rim hot area and a hub cold area of a heat insulation workpiece (9) to realize gradient heat treatment at different positions.
5. The design method of the gradient heat treatment furnace for the double-organization disc part with the precisely controllable temperature gradient according to claim 1, wherein the top and bottom heating/cooling modules are used for heating through resistance wires and argon cooling to realize the temperature control functions of heating and cooling of the hub part.
6. The design method of the double-organization disc piece gradient heat treatment furnace with the accurately controllable temperature gradient according to claim 1, wherein the accurate temperature control and temperature measurement operation of the hub are realized by respectively arranging 4 thermocouples on the top heating/cooling module and the bottom heating/cooling module.
7. The design method of the gradient heat treatment furnace with the double-tissue disc part and the accurately controllable temperature gradient according to claim 1, characterized in that the upper and lower surfaces of the workpiece (9) are filled with ceramic fiber felt or high silica brick heat preservation materials for heat preservation.
8. The design method of the gradient heat treatment furnace for the double-tissue disc part with the accurately controllable temperature gradient according to claim 1 is characterized in that the method realizes the heat treatment temperature with the accurate temperature control of 850-1050 ℃ at the hub part and the heat treatment temperature of 1000-1200 ℃ at the rim part, and further realizes the long-time heat treatment within the wider temperature gradient of the disc part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350914A (en) * | 2021-12-15 | 2022-04-15 | 中国科学院金属研究所 | Device and method for air-cooling uniform cooling in alloy furnace external heat treatment process |
| CN115948704A (en) * | 2022-12-29 | 2023-04-11 | 北京钢研高纳科技股份有限公司 | Heat treatment method of high-temperature alloy case forging and case forging manufactured by same |
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| CN102643958A (en) * | 2012-04-26 | 2012-08-22 | 西北工业大学 | Heat treatment device for gradient of disk component |
| CN109680137A (en) * | 2019-01-18 | 2019-04-26 | 东北大学 | A kind of oblate steel heat treatment furnace of open-type |
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2021
- 2021-02-09 CN CN202110176454.4A patent/CN113061709B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643958A (en) * | 2012-04-26 | 2012-08-22 | 西北工业大学 | Heat treatment device for gradient of disk component |
| CN109680137A (en) * | 2019-01-18 | 2019-04-26 | 东北大学 | A kind of oblate steel heat treatment furnace of open-type |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350914A (en) * | 2021-12-15 | 2022-04-15 | 中国科学院金属研究所 | Device and method for air-cooling uniform cooling in alloy furnace external heat treatment process |
| CN115948704A (en) * | 2022-12-29 | 2023-04-11 | 北京钢研高纳科技股份有限公司 | Heat treatment method of high-temperature alloy case forging and case forging manufactured by same |
| CN115948704B (en) * | 2022-12-29 | 2024-03-01 | 北京钢研高纳科技股份有限公司 | Heat treatment method of high-temperature alloy casing forging and prepared casing forging |
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