CN117123726A - Stress-relief forging method for high-temperature alloy annular piece - Google Patents
Stress-relief forging method for high-temperature alloy annular piece Download PDFInfo
- Publication number
- CN117123726A CN117123726A CN202111607210.3A CN202111607210A CN117123726A CN 117123726 A CN117123726 A CN 117123726A CN 202111607210 A CN202111607210 A CN 202111607210A CN 117123726 A CN117123726 A CN 117123726A
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- China
- Prior art keywords
- forging
- heat treatment
- stress
- hours
- temperature
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- 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.)
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Links
- 238000005242 forging Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 title abstract description 10
- 229910045601 alloy Inorganic materials 0.000 title abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000601 superalloy Inorganic materials 0.000 claims 1
- 230000035882 stress Effects 0.000 abstract description 15
- 238000003754 machining Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a stress-relief forging method for a high-temperature alloy annular part, which is characterized by comprising the steps of blanking, punching, ring rolling, solution heat treatment, cold bulging, aging heat treatment, testing and inspection. By the mode, the invention can solve the processing deformation problem caused by residual stress in the precise processing process of the current customer, and the machining performance of the current customer is improved to the maximum extent and stably by precisely controlling the deformation quantity and changing the stress direction on the premise of not reducing other performance indexes. The method can effectively remove the stress of the forging piece, and is suitable for a stress-removing forging method of the high-temperature alloy annular piece.
Description
Technical Field
The invention relates to a forging method, in particular to a stress-relief forging method for a high-temperature alloy annular piece.
Background
The high-temperature alloy is widely applied to the aeroengine, in particular to a core high-temperature resistant component thereof, the high-temperature alloy annular forging occupies a relatively large space, and the processing quality directly determines the installation precision, the use stability and the service life of the component.
Because the forging has a large amount of plastic deformation in the hot working process and the heating and cooling processes, after a series of forging, heat treatment and machining, the inside of the forging can have larger harmful unordered residual stress, so that the deformation in the working process and the aging deformation at the finishing room temperature are caused, and serious hidden danger of product quality is caused. The residual stress in the forge piece is quantified, the qualitative analysis is carried out on the residual stress, the working procedures of each stress generation are judged, and the optimization or elimination is an imperative research subject.
Disclosure of Invention
The invention aims to solve the technical problem of providing a stress-relief forging method for a high-temperature alloy annular part, which can solve the problem of processing deformation caused by residual stress in the precision processing process, and can improve the machining performance to the greatest extent by accurately controlling the deformation amount and changing the stress direction without reducing other performance indexes.
In order to solve the technical problems, the extrusion forming is realized by adopting the following technical scheme:
and (3) blanking: cutting according to the technological requirements;
punching: heating the blank by adopting a high-temperature gas furnace to 1040-1120 ℃, preserving heat for 2-3.5 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, upsetting and punching the blank;
ring rolling: heating the ring forging subjected to punching by adopting a high-temperature gas furnace to 980-1060 ℃, preserving heat for 0.5-2 hours, then taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for ring rolling with multiple fires, controlling the feeding speed of ring rolling 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 ℃;
solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, and discharging the ring forging for air cooling or water cooling after heat preservation for 1-2 hours at 950-1000 ℃;
cold bulging: cold bulging is carried out on the product after the solution heat treatment, and the bulging deformation is controlled to be 0.2% -0.5%;
aging heat treatment: and (3) carrying out ageing heat treatment on the forge piece subjected to cold bulging by adopting a heat treatment furnace, maintaining the temperature at 700-740 ℃ for 7-9 hours, cooling to 600-640 ℃, preserving the temperature at 600-640 ℃ for 7-9 hours, and discharging and air cooling.
Compared with the prior art, the invention has the following beneficial effects:
according to the stress-relief forging method for the high-temperature alloy annular piece, the surface tensile stress is reduced to below 350MPa, and the processing deformation degree is reduced; the rapid rolling mode is adopted for ring rolling, 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%, the final forging temperature is controlled to be more than 750 ℃, and the deformation at low temperature is prevented from generating larger internal stress; after solution heat treatment, the product is subjected to cold bulging with small deformation, the deformation is precisely controlled to be 0.2% -0.5%, the anisotropic stress in the forge piece is changed into the same-direction stress through the bulging with small deformation, the stress is orderly distributed, and the stress of each area can be homogenized.
Detailed Description
By implementing the stress-relief forging method for the high-temperature alloy annular piece, equipment such as a forging heating furnace, a press, a mechanical arm and the like are required to be provided. The method comprises the following specific embodiments:
and (3) blanking: cutting according to the technological requirements;
punching: heating the blank by adopting a high-temperature gas furnace to 1040-1120 ℃, preserving heat for 2-3.5 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, upsetting and punching the blank;
ring rolling: heating the ring forging subjected to punching by adopting a high-temperature gas furnace to 980-1060 ℃, preserving heat for 0.5-2 hours, then taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for ring rolling with multiple fires, controlling the feeding speed of ring rolling 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 ℃;
solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, and discharging the ring forging for air cooling or water cooling after heat preservation for 1-2 hours at 950-1000 ℃;
cold bulging: cold bulging is carried out on the product after the solution heat treatment, and the bulging deformation is controlled to be 0.2% -0.5%;
aging heat treatment: and (3) carrying out ageing heat treatment on the forge piece subjected to cold bulging by adopting a heat treatment furnace, maintaining the temperature at 700-740 ℃ for 7-9 hours, cooling to 600-640 ℃, preserving the temperature at 600-640 ℃ for 7-9 hours, and discharging and air cooling.
Claims (1)
1. A method of stress-relieving forging a superalloy ring component comprising the steps of:
and (3) blanking: cutting according to the technological requirements;
punching: heating the blank by adopting a high-temperature gas furnace to 1040-1120 ℃, preserving heat for 2-3.5 hours, taking the blank out of the high-temperature gas furnace, transporting the blank to a press, upsetting and punching the blank;
ring rolling: heating the ring forging subjected to punching by adopting a high-temperature gas furnace to 980-1060 ℃, preserving heat for 0.5-2 hours, then taking out the forging from the high-temperature gas furnace, transferring the forging to a ring rolling machine for ring rolling with multiple fires, controlling the feeding speed of ring rolling 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 ℃;
solution heat treatment: carrying out heat treatment on the ring forging by adopting a heat treatment furnace, and discharging the ring forging for air cooling or water cooling after heat preservation for 1-2 hours at 950-1000 ℃;
cold bulging: cold bulging is carried out on the product after the solution heat treatment, and the bulging deformation is controlled to be 0.2% -0.5%;
aging heat treatment: and (3) carrying out ageing heat treatment on the forge piece subjected to cold bulging by adopting a heat treatment furnace, maintaining the temperature at 700-740 ℃ for 7-9 hours, cooling to 600-640 ℃, preserving the temperature at 600-640 ℃ for 7-9 hours, and discharging and air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607210.3A CN117123726A (en) | 2021-12-26 | 2021-12-26 | Stress-relief forging method for high-temperature alloy annular piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607210.3A CN117123726A (en) | 2021-12-26 | 2021-12-26 | Stress-relief forging method for high-temperature alloy annular piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117123726A true CN117123726A (en) | 2023-11-28 |
Family
ID=88858708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111607210.3A Pending CN117123726A (en) | 2021-12-26 | 2021-12-26 | Stress-relief forging method for high-temperature alloy annular piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117123726A (en) |
-
2021
- 2021-12-26 CN CN202111607210.3A patent/CN117123726A/en active Pending
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