CN112122540A - High-temperature alloy ring-shaped piece micro-stress forging process - Google Patents
High-temperature alloy ring-shaped piece micro-stress forging process Download PDFInfo
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- CN112122540A CN112122540A CN202010882557.8A CN202010882557A CN112122540A CN 112122540 A CN112122540 A CN 112122540A CN 202010882557 A CN202010882557 A CN 202010882557A CN 112122540 A CN112122540 A CN 112122540A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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Abstract
The invention provides a high-temperature alloy ring-shaped piece micro-stress forging process which mainly comprises the following steps: blanking, punching, ring rolling, solution heat treatment, cold bulging, aging heat treatment, testing and inspection. By the mode, the invention can solve the problem of machining deformation caused by residual stress in the precision machining process of the current client, and the machining performance of the client can be stably improved to the maximum extent on the premise of not reducing other performance indexes by accurately controlling the deformation and changing the stress direction, thereby providing a product with market competitiveness for the client and simultaneously greatly improving the brand image and the market competitiveness of a company.
Description
Technical Field
The invention relates to the field of manufacturing of aviation parts, in particular to a micro-stress forging process of a high-temperature alloy annular part.
Background
The high-temperature alloy is widely applied to aeroengines, particularly the core high-temperature resistant part of the aeroengine, the high-temperature alloy annular forging occupies a large area, and the machining quality directly determines the installation precision, the use stability and the service life of parts.
Because the forge piece has a large amount of plastic deformation in the hot working process and the heating and cooling process, after a series of forging, heat treatment and machining, large harmful disordered residual stress can exist in the forge piece, which causes deformation in the working process and deformation in the finish machining room temperature aging, and causes serious hidden danger of product quality. Quantifying the residual stress in the forged piece, qualitatively analyzing the residual stress, judging the procedures of stress generation, and optimizing or eliminating the procedures become a necessary research subject.
Disclosure of Invention
In order to solve the problems, the invention provides a high-temperature alloy ring-shaped piece micro-stress forging process which can solve the problem of machining deformation caused by residual stress in the precision machining process of a current client, and the machining performance of the high-temperature alloy ring-shaped piece is stably improved to the maximum extent on the premise of not reducing other performance indexes by accurately controlling the deformation and changing the stress direction, so that a product with market competitiveness is provided for the client, and the brand image and the market competitiveness of a company can be greatly improved.
The main content of the invention comprises: a high-temperature alloy annular piece micro-stress forging process mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1040-1120 ℃, preserving heat for 2-3.5 hours, taking out the blank from the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 980-1060 ℃ by using a high-temperature gas furnace, preserving heat for 0.5-2 hours, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, controlling the ring rolling feeding speed to be more than 1.3mm/s, controlling the deformation to be less than 25%, and controlling the finish forging temperature to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, keeping the temperature at 950-1000 ℃ for 1-2 hours, and then discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.2-0.5%;
s6, aging heat treatment: carrying out aging heat treatment on the cold bulging forge piece by using a heat treatment furnace, keeping the temperature at 700-740 ℃ for 7-9 hours, cooling the forge piece to 600-640 ℃, keeping the temperature at 600-640 ℃ for 7-9 hours, and then discharging the forge piece out of the furnace for air cooling;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
Preferably, the invention also discloses a high-temperature alloy annular piece micro-stress forging process which mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank to 1070-1100 ℃ by adopting a high-temperature gas furnace, preserving heat for 2.5-3 hours, taking out the blank from the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 1000-1020 ℃ by using a high-temperature gas furnace, preserving heat for 1-1.5 hours, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, controlling the ring rolling feeding speed to be more than 1.3mm/s, controlling the deformation to be less than 25%, and controlling the final forging temperature to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by using a heat treatment furnace, keeping the temperature at 960-980 ℃ for 1.5-2 hours, and then discharging the ring forging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.3-0.4%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forged piece by using a heat treatment furnace, keeping the temperature of 720-730 ℃ for 8 hours, cooling the forged piece to 620-630 ℃, keeping the temperature of 620-630 ℃ for 8 hours, discharging the forged piece out of the furnace, and air-cooling the forged piece;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing. .
The invention has the beneficial effects that:
1. reducing the surface tensile stress to be below 350MPa, and reducing the processing deformation degree;
2. homogenizing the core stress of the forging and controlling the core stress within +/-100 MPa;
3. the ring rolling is carried out by adopting a rapid rolling mode, the feeding speed of the ring rolling is controlled to be more than 1.3mm/s, the deformation is controlled to be less than 25 percent, the finish forging temperature is controlled to be more than 750 ℃, and the phenomenon that the ring rolling deforms to generate larger internal stress at low temperature is prevented;
4. and after the solution heat treatment, the product is subjected to small-deformation cold bulging, the deformation is accurately controlled to be 0.2-0.5%, the bulging with small deformation changes the anisotropic stress in the forge piece into the homodromous stress, the stresses are orderly arranged, and the stresses in all the regions can be homogenized.
Detailed Description
The technical solution protected by the present invention is specifically explained below.
Example 1
A high-temperature alloy annular piece micro-stress forging process mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1040 ℃, preserving heat for 2 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 980 ℃ by using a high-temperature gas furnace, preserving heat for 0.5 hour, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, wherein the ring rolling feeding speed is controlled to be more than 1.3mm/s, the deformation is controlled to be less than 25%, and the finish forging temperature is controlled to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, keeping the temperature at 950 ℃ for 1 hour, and then discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.2%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forged piece by using a heat treatment furnace, keeping the temperature at 700 ℃ for 7 hours, cooling the forged piece to 600 ℃, keeping the temperature at 600 ℃ for 7 hours, discharging the forged piece out of the furnace, and air cooling the forged piece;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
Example 2
A high-temperature alloy annular piece micro-stress forging process mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1120 ℃, preserving heat for 3.5 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 1060 ℃ by using a high-temperature gas furnace, preserving heat for 2 hours, taking the forging out of the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, wherein the ring rolling feeding speed is controlled to be more than 1.3mm/s, the deformation is controlled to be less than 25%, and the finish forging temperature is controlled to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, keeping the temperature at 1000 ℃ for 2 hours, and then discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.5%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forged piece by using a heat treatment furnace, keeping the temperature at 740 ℃ for 9 hours, then cooling the forged piece to 640 ℃, keeping the temperature at 640 ℃ for 9 hours, then discharging the forged piece out of the furnace and air cooling the forged piece;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
Example 3
A high-temperature alloy annular piece micro-stress forging process mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1070 ℃, preserving heat for 2.5 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 1000 ℃ by using a high-temperature gas furnace, preserving heat for 1 hour, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, wherein the ring rolling feeding speed is controlled to be more than 1.3mm/s, the deformation is controlled to be less than 25%, and the finish forging temperature is controlled to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by using a heat treatment furnace, keeping the temperature at 960 ℃ for 1.5 hours, and discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.3%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forged piece by using a heat treatment furnace, keeping the temperature of 720 ℃ for 8 hours, cooling the forged piece to 620 ℃, keeping the temperature of 620 ℃ for 8 hours, discharging the forged piece from the furnace, and air-cooling the forged piece;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
Example 4
A high-temperature alloy annular piece micro-stress forging process mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1100 ℃, preserving heat for 3 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 1020 ℃ by using a high-temperature gas furnace, preserving heat for 1.5 hours, taking the forging out of the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, wherein the ring rolling feeding speed is controlled to be more than 1.3mm/s, the deformation is controlled to be less than 25%, and the finish forging temperature is controlled to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by using a heat treatment furnace, keeping the temperature at 980 ℃ for 2 hours, and then discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.4%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forge piece by using a heat treatment furnace, keeping the temperature at 730 ℃ for 8 hours, then cooling the forge piece to 630 ℃, keeping the temperature at 630 ℃ for 8 hours, and then discharging the forge piece from the furnace for air cooling;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. A high-temperature alloy annular piece micro-stress forging process is characterized by mainly comprising the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank by a high-temperature gas furnace to 1040-1120 ℃, preserving heat for 2-3.5 hours, taking out the blank from the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 980-1060 ℃ by using a high-temperature gas furnace, preserving heat for 0.5-2 hours, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, controlling the ring rolling feeding speed to be more than 1.3mm/s, controlling the deformation to be less than 25%, and controlling the finish forging temperature to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, keeping the temperature at 950-1000 ℃ for 1-2 hours, and then discharging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.2-0.5%;
s6, aging heat treatment: carrying out aging heat treatment on the cold bulging forge piece by using a heat treatment furnace, keeping the temperature at 700-740 ℃ for 7-9 hours, cooling the forge piece to 600-640 ℃, keeping the temperature at 600-640 ℃ for 7-9 hours, and then discharging the forge piece out of the furnace for air cooling;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
2. The micro-stress forging process of high-temperature alloy annular parts according to claim 1, which mainly comprises the following steps:
s1, blanking: cutting according to the process requirements;
s2, punching: heating the blank to 1070-1100 ℃ by adopting a high-temperature gas furnace, preserving heat for 2.5-3 hours, taking out the blank from the high-temperature gas furnace, transporting the blank to a press, and upsetting and punching the blank;
s3, ring rolling: heating the punched ring forging to 1000-1020 ℃ by using a high-temperature gas furnace, preserving heat for 1-1.5 hours, taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for multi-fire ring rolling, controlling the ring rolling feeding speed to be more than 1.3mm/s, controlling the deformation to be less than 25%, and controlling the final forging temperature to be more than 750 ℃;
s4, solution heat treatment: carrying out heat treatment on the ring forging by using a heat treatment furnace, keeping the temperature at 960-980 ℃ for 1.5-2 hours, and then discharging the ring forging from the furnace for air cooling or water cooling;
s5, cold bulging: performing cold bulging on the product subjected to the solution heat treatment, and controlling the bulging deformation amount to be 0.3-0.4%;
s6, aging heat treatment: carrying out aging heat treatment on the cold-bulging forged piece by using a heat treatment furnace, keeping the temperature of 720-730 ℃ for 8 hours, cooling the forged piece to 620-630 ℃, keeping the temperature of 620-630 ℃ for 8 hours, discharging the forged piece out of the furnace, and air-cooling the forged piece;
s7, testing: testing the product sample to verify whether the product sample meets the specification requirements;
s8, checking: and (5) checking according to the required size of the drawing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113245485A (en) * | 2021-06-24 | 2021-08-13 | 机械科学研究总院江苏分院有限公司 | Metal ring rolling process |
| CN114231868A (en) * | 2021-12-22 | 2022-03-25 | 北京钢研高纳科技股份有限公司 | Method for removing internal residual stress of high-temperature alloy annular piece and application thereof |
| CN114250352A (en) * | 2021-12-22 | 2022-03-29 | 北京钢研高纳科技股份有限公司 | Method for improving service stability of high-temperature alloy disc or ring part and disc or ring part obtained by method |
| CN114318192A (en) * | 2021-12-29 | 2022-04-12 | 北京钢研高纳科技股份有限公司 | Method for regulating and controlling residual stress of high-temperature alloy ring-forming element by inner hole bulging and quenching and application thereof |
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| CN113245485A (en) * | 2021-06-24 | 2021-08-13 | 机械科学研究总院江苏分院有限公司 | Metal ring rolling process |
| CN114231868A (en) * | 2021-12-22 | 2022-03-25 | 北京钢研高纳科技股份有限公司 | Method for removing internal residual stress of high-temperature alloy annular piece and application thereof |
| CN114250352A (en) * | 2021-12-22 | 2022-03-29 | 北京钢研高纳科技股份有限公司 | Method for improving service stability of high-temperature alloy disc or ring part and disc or ring part obtained by method |
| CN114250352B (en) * | 2021-12-22 | 2023-11-14 | 北京钢研高纳科技股份有限公司 | Method for improving service stability of superalloy disc or ring and obtained disc or ring |
| CN114318192A (en) * | 2021-12-29 | 2022-04-12 | 北京钢研高纳科技股份有限公司 | Method for regulating and controlling residual stress of high-temperature alloy ring-forming element by inner hole bulging and quenching and application thereof |
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| CN112122540B (en) | 2022-08-05 |
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