CN116329464A - Hot die forging forming method for Ti2AlNb alloy turbine disk forging - Google Patents
Hot die forging forming method for Ti2AlNb alloy turbine disk forging Download PDFInfo
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- CN116329464A CN116329464A CN202111606162.6A CN202111606162A CN116329464A CN 116329464 A CN116329464 A CN 116329464A CN 202111606162 A CN202111606162 A CN 202111606162A CN 116329464 A CN116329464 A CN 116329464A
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- Prior art keywords
- forging
- blank
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- pressing
- alloy turbine
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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
- B21K1/28—Making machine elements wheels; discs
- B21K1/32—Making machine elements wheels; discs discs, e.g. disc wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a hot die forging forming method of a Ti2AlNb alloy turbine disk forging, which is characterized in that a blank with a certain specification is upset to obtain a cake blank, positioning grooves are respectively machined on the upper end surface and the lower end surface of the cake blank, the cake blank is coated with paint after being heated and insulated, the cake blank is placed in a lower die for die pressing, the pressing amount and the pressing rate are controlled, and air cooling is carried out after forging to obtain the Ti2AlNb alloy turbine disk forging. The method solves the problem of cracks in the alloy deformation process, and is suitable for hot die forging and forming of Ti2AlNb alloy turbine disc forgings.
Description
Technical Field
The invention relates to a hot die forging forming method, in particular to a hot die forging forming method of a Ti2AlNb alloy turbine disk forging.
Background
The hot die forging process is an advanced forging process method in which the die is preheated to a higher temperature for deformation. The mold material selected at this temperature should have sufficient strength and good resistance to high temperature oxidation. The tonnage of the required equipment is small during hot die forging production, the machining allowance of the forging piece is small, the energy consumption is low, and the forging piece has uniform and compact structure, complete streamline and excellent performance. The Ti2AlNb alloy turbine disk forging is produced by adopting a hot forging process, and has obvious advantages on consistency and stability of forging structure performance.
If the conventional large die forging equipment is adopted, a composite die and a die core are required to be designed, so that the cost is high, the production control is complex, the alloy die forging structure is difficult to accurately control, and if a forging hammer is adopted, large cracks are easily generated in the forging process; at present, the specific forging process of the same alloy forging is usually to mold by utilizing a press composite sheath, and the main problem is that the surface of the forging has serious cracks and low performance, so that the forging becomes waste.
Disclosure of Invention
The invention aims to solve the problem of providing a hot die forging forming method for a Ti2AlNb alloy turbine disk forging, which realizes die forging forming of low-plasticity difficult-to-deform Ti2AlNb alloy by controlling the pressing down rate and adopting static pressure.
In order to solve the technical problems, the technical scheme provided by the invention comprises the following steps:
upsetting a blank with a certain specification to H, keeping the temperature at 980-1020 ℃ for a period of time, upsetting the blank after heat preservation, hammering stone cotton up and down by a hammer anvil during upsetting, and air-cooling after forging; performing coloring inspection after upsetting the blank, and eliminating cracks in time;
machining positioning grooves on the blank, machining positioning grooves on the upper end face and the lower end face of the upsetting cake blank respectively, wherein the depths of the grooves on the upper end face and the lower end face are h, and the diameter of the upper groove is d 1 The diameter of the lower groove is d 2 The grooves are designed by round corners;
heating the blank to 100-150 ℃ to spray heat-insulating paint, heating to 1030-1050 ℃, placing the blank in a lower die for first fire die pressing, wherein the pressing amount is 150mm, the speed is V=8 mm/s, and air cooling after forging;
preheating a die to 350-400 ℃, placing a layer of glass cloth on the surface of a blank by using two layers of asbestos on an upper die pad and a lower die pad of the die, heating to 100-150 ℃ for spraying heat preservation paint after the blank is colored and scratched, heating to 1030-1050 ℃, placing the blank into a lower die for second fire die pressing, filling the die, wherein the pressing amount is 224mm, and the speed between 224mm and 124mm is V 1 =8mm/s, a velocity V between 124mm and 24mm in the amount of pressing down 2 =6mm/s, the rate between 24mm and 4mm of the pressing amount isV 3 =5 mm/s, a velocity V between 4mm and 0mm in the amount of pressing down 4 After forging, air cooling is carried out to obtain the Ti2AlNb alloy turbine disk forging piece.
Further, the depths of the grooves on the upper end face and the lower end face are h=20 mm-30 mm.
Further, the diameter of the upper groove is d 1 =250 mm to 280mm; the diameter of the lower groove is d 2 ＝200mm～230mm。
Further, the rounded corner of the groove is r=30mm.
Compared with the prior art, the invention has the following beneficial effects:
according to the hot die forging forming method of the Ti2AlNb alloy turbine disk forging, the pressing speed is controlled by adopting static pressure, so that the forging is prevented from cracking caused by too high pressing speed, and the cracking problem in the forging deformation process is further solved by filling asbestos in a die; the positioning grooves are formed in the forge piece, so that positioning is achieved, deformation is distributed to the gift box, and stable control of forge piece tissues is achieved.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of a biscuit according to the present invention.
Detailed Description
The hot forging forming method of the Ti2AlNb alloy turbine disk forging needs to be provided with equipment such as a forging heating furnace, a press, a mechanical arm and the like. The method comprises the following specific embodiments:
upsetting a blank with phi 300 multiplied by 810mm to H=500 mm, heating to 980 ℃ for heat preservation for a period of time, upsetting the heat-preserved blank, hammering the upper and lower pad mineral wool by using a hammer anvil during upsetting, and air cooling after forging; and (5) performing coloring inspection after upsetting the blank, and timely removing cracks.
Machining positioning grooves on the blank, wherein as shown in figure 1, positioning grooves (2 and 3) are respectively machined on the upper end face and the lower end face of an upsetting cake blank 1, the depths (2 and 3) of the grooves on the upper end face and the lower end face are both 30mm, the diameter of the upper groove 2 is 255mm, the diameter of the lower groove 3 is 230mm, and the grooves are designed by adopting round corners 4; r=30 mm for rounded corners 4.
Heating the blank 1 to 100-150 ℃ to spray heat-insulating paint, heating to 1030 ℃, placing the blank in a lower die for first fire die pressing, wherein the pressing amount is 150mm, the speed is V=8 mm/s, and air cooling after forging.
Preheating a die to 350-400 ℃, placing a layer of glass cloth on the surface of a blank 1 by using two layers of asbestos on an upper die pad and a lower die pad of the die, heating to 100-150 ℃ for spraying heat preservation paint after coloring and repairing the blank 1, heating to 1030 ℃, placing the die into a lower die for second fire die pressing, filling the die, wherein the pressing amount is 224mm, and the speed between 224mm and 124mm is V 1 =8mm/s, a velocity V between 124mm and 24mm in the amount of pressing down 2 =6mm/s, a velocity V between 24mm and 4mm 3 =5 mm/s, a velocity V between 4mm and 0mm in the amount of pressing down 4 After forging, air cooling is carried out to obtain the Ti2AlNb alloy turbine disk forging piece.
Claims (4)
1. The hot die forging forming method of the Ti2AlNb alloy turbine disk forging is characterized by comprising the following steps of:
upsetting a blank with a certain specification to H, keeping the temperature at 980-1020 ℃ for a period of time, upsetting the blank after heat preservation, hammering stone cotton up and down by a hammer anvil during upsetting, and air-cooling after forging; performing coloring inspection after upsetting the blank, and eliminating cracks in time;
machining positioning grooves on the blank, machining positioning grooves on the upper end face and the lower end face of the upsetting cake blank respectively, wherein the depths of the grooves on the upper end face and the lower end face are h, and the diameter of the upper groove is d 1 The diameter of the lower groove is d 2 The grooves are designed by round corners;
heating the blank to 100-150 ℃ to spray heat-insulating paint, heating to 1030-1050 ℃, placing the blank in a lower die for first fire die pressing, wherein the pressing amount is 150mm, the speed is V=8 mm/s, and air cooling after forging;
preheating the mould to 350-400 ℃, placing a layer of glass cloth on the surface of the blank material on two layers of asbestos on the upper and lower mould pads of the mould, coloring and repairing the blank material,heating to 100-150 deg.C, spraying heat-insulating paint, heating to 1030-1050 deg.C, placing into lower die, making second fire die-pressing, filling die, making pressing quantity be 224mm, and making the speed between 224mm and 124mm be V 1 =8mm/s, a velocity V between 124mm and 24mm in the amount of pressing down 2 =6mm/s, a velocity V between 24mm and 4mm 3 =5 mm/s, a velocity V between 4mm and 0mm in the amount of pressing down 4 After forging, air cooling is carried out to obtain the Ti2AlNb alloy turbine disk forging piece.
2. The hot forging forming method of the Ti2AlNb alloy turbine disk forgings according to claim 1, wherein the depths of the grooves of the upper end face and the lower end face are h=20 mm-30 mm.
3. The hot forging forming method of a Ti2AlNb alloy turbine disk forgings according to claim 1, characterized in that the diameter of the upper groove is d 1 =250 mm to 280mm; the diameter of the lower groove is d 2 ＝200mm～230mm。
4. The method of hot forging a Ti2 ainb alloy turbine disc forging of claim 1, wherein the fillet of the groove is R = 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111606162.6A CN116329464A (en) | 2021-12-26 | 2021-12-26 | Hot die forging forming method for Ti2AlNb alloy turbine disk forging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111606162.6A CN116329464A (en) | 2021-12-26 | 2021-12-26 | Hot die forging forming method for Ti2AlNb alloy turbine disk forging |
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| Publication Number | Publication Date |
|---|---|
| CN116329464A true CN116329464A (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111606162.6A Pending CN116329464A (en) | 2021-12-26 | 2021-12-26 | Hot die forging forming method for Ti2AlNb alloy turbine disk forging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592060A (en) * | 2022-10-31 | 2023-01-13 | 北京钢研高纳科技股份有限公司（Cn） | Ti2AlNb alloy turbine casing forging and hot die forging forming method thereof |
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2021
- 2021-12-26 CN CN202111606162.6A patent/CN116329464A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592060A (en) * | 2022-10-31 | 2023-01-13 | 北京钢研高纳科技股份有限公司（Cn） | Ti2AlNb alloy turbine casing forging and hot die forging forming method thereof |
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