CN110814250A - Forming method of disc-shaped forging - Google Patents
Forming method of disc-shaped forging Download PDFInfo
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- CN110814250A CN110814250A CN201911108992.9A CN201911108992A CN110814250A CN 110814250 A CN110814250 A CN 110814250A CN 201911108992 A CN201911108992 A CN 201911108992A CN 110814250 A CN110814250 A CN 110814250A
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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
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
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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
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- 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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- 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
Abstract
The invention discloses a forming method of a disc-shaped forging, which comprises the following steps: forging the bar stock in the two-phase region of TβIsothermal upset cake at 30-35 deg.C above phase transition point, at TβFinish forging at 15-20 ℃ above the transformation point, and carrying out heat treatment in a two-phase region; the forming method is simple and easy to operate, has strong practicability and strong popularization; in the forming method of the invention, the bar stock is subjected to a two-phase regionModification of forging at TβIsothermal upset cake at 30-35 deg.C above phase transition point, at TβFinish forging at 15-20 ℃ above the transformation point, and performing heat treatment in a two-phase region to obtain a stable structure of β transformation high-aspect-ratio strip-shaped nascent α phase + a very small amount of equiaxed nascent α, and the stable structure has high heat strength and heat stability.
Description
Technical Field
The invention belongs to the field of hot working, and particularly relates to a forming method of a disc-shaped forging, which is particularly suitable for disc-shaped forgings with high requirements on fatigue strength, plasticity, heat strength and heat stability.
Background
The BT25 alloy is a heat-strength titanium alloy with excellent comprehensive performance, belongs to a martensite α + β two-phase titanium alloy taking α phase as a main component, and has the nominal component of Ti-6.5Al-2Mo-1Zr-1Sn-1W-0.2 Si., and is mainly used for important parts such as a high-pressure air compressor disc of an aircraft engine, a casing shell, a switching casing and the like, so the alloy is generally required to have comprehensive mechanical properties of excellent heat strength and heat stability.
The BT25 alloy symmetrical disc-shaped forge piece for the aeroengine has high matching requirements on the room temperature and high temperature performance and the thermal stability performance of the forge piece, the requirement on the structure state of the forge piece is accurate, the requirement on the uniformity and the consistency of the structure performance of the forge piece is high, and the prior art is difficult to meet the requirements.
Disclosure of Invention
The invention aims to provide a forming method of a disc-shaped forging piece, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of forming a disc shaped forging comprising the steps of:
1) forging the two-phase region of the bar stock;
below TβFilling and heating the bar stock at the temperature of 40-45 ℃ of the phase transition point, and after the furnace temperature is raised to be lower than TβPreserving heat at the phase transformation point of 40-45 ℃, and obtaining a blank after heat preservation is finished; preheating a tool and a die to a temperature not lower than 300 ℃ before forging, and carrying out two-phase region forging change of two-upsetting and two-drawing on a blank;
2) at TβIsothermal upsetting cakes at the temperature of 30-35 ℃ above the phase transformation point;
preheating the die to T before forgingβFilling the blank at a temperature of 20-30 ℃ below the transformation point, and heating the filled blank to TβCarrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at a temperature of 30-35 ℃ above the phase transformation point, and carrying out air cooling after forging to obtain a cake blank;
3) at TβFinish forging at 15-20 ℃ above the transformation point;
preheating the cake blank in an electric furnace at 300 +/-50 ℃ for 5-8 min, preheating a tool and a die to 250-350 ℃ before forging, and heating the cake blank to TβAfter the temperature is 15-20 ℃ above the transformation point, performing finish forging forming on the cake blank by using a press, and performing air cooling after forging;
4) heat treatment in two phase regions;
primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the phase transition point at 30-40 ℃ for 90min, and then dispersing and air cooling;
secondary annealing: and (4) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
Further, in step 1: and (3) performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil or an arc anvil.
Further, in step 1: the heat preservation time is calculated according to 0.8-1.0 min/mm.
Further, in step 1: the bar stock is cold stock before heating, the surface is polished by a round-nose lathe tool, and the end face is chamfered to R10-R15.
Further, in step 2: and (3) wrapping a soft sheath in the discharging and transferring process of the blank subjected to heat preservation in the step 1.
Further, the soft cover is composed of fiber felt and adhesive, wherein the fiber felt contains 42-44% of Al according to weight percentage2O3And 56% SiO2The adhesive is high-temperature adhesive powder special for titanium alloy.
Furthermore, in the step 2, β isothermal upsetting cake, the pressing speed is controlled to be 1-4 mm/s by the first 90% deformation amount, and the pressing speed is controlled to be 0.1-0.5 mm/s by the last 10% deformation amount.
Further, in step 3: and (3) final forging forming, controlling the pressing speed to be 1-4 mm/s by the first 90% deformation amount, controlling the pressing speed to be 0.1-0.5 mm/s by the second 10% deformation amount, and releasing the pressure after the pressure is maintained for 100-150 s after the final deformation amount is obtained.
Further, in step 3: the cake blank before preheating in the electric furnace is sprayed with a glass protective agent.
Further, in step 3: the preheating time of the mold before production is more than or equal to 12 hours.
The invention has the following beneficial effects:
1. the forming method is simple and easy to operate, has strong practicability and strong popularization;
2. in the forming method of the invention, the bar stock is subjected to two-phase region forging change at TβIsothermal upset cake at 30-35 deg.C above phase transition point, at TβFinish forging at 15-20 ℃ above the transformation point, and performing heat treatment in a two-phase region to obtain a stable structure of β transformation high-aspect-ratio strip-shaped nascent α phase + a very small amount of equiaxed nascent α, and the stable structure has high heat strength and heat stability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram showing the heating curve of isothermal upset cake in the method for forming a disc-shaped forging piece according to the present invention;
FIG. 2 is a heating curve diagram of the finish forging forming of the forming method of a disc-shaped forging piece according to the present invention;
FIG. 3 is a flow chart of a method for forming a disc forging of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
A method of forming a disc shaped forging comprising the steps of:
1) forging the two-phase region of the bar stock;
below TβFilling and heating the bar stock at the temperature of 40-45 ℃ of the phase transition point, and after the furnace temperature is raised to be lower than TβPreserving heat at the phase transformation point of 40-45 ℃, and obtaining a blank after heat preservation is finished; preheating a tool and a die to a temperature not lower than 300 ℃ before forging, and carrying out two-phase region forging change of two-upsetting and two-drawing on a blank;
2) at TβIsothermal upsetting cakes at the temperature of 30-35 ℃ above the phase transformation point;
preheating the die to T before forgingβFilling the blank at a temperature of 20-30 ℃ below the transformation point, and heating the filled blank to TβCarrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at a temperature of 30-35 ℃ above the phase transformation point, and carrying out air cooling after forging to obtain a cake blank;
3) at TβFinish forging at 15-20 ℃ above the transformation point;
preheating the cake blank in an electric furnace at 300 +/-50 ℃ for 5-8 min, preheating a tool and a die to 250-350 ℃ before forging, and heating the cake blank to TβAfter the temperature is 15-20 ℃ above the transformation point, performing finish forging forming on the cake blank by using a press, and performing air cooling after forging;
4) heat treatment in two phase regions;
primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the transformation point at 30-40 ℃ for 90min, and then dispersingAir cooling;
secondary annealing: and (4) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
Further, in step 1: and (3) performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil or an arc anvil.
Further, in step 1: the heat preservation time is calculated according to 0.8-1.0 min/mm.
Further, in step 1: the bar stock is cold stock before heating, the surface is polished by a round-nose lathe tool, and the end face is chamfered to R10-R15.
Further, in step 2: and (3) wrapping a soft sheath in the discharging and transferring process of the blank subjected to heat preservation in the step 1.
Further, the soft cover is composed of fiber felt and adhesive, wherein the fiber felt contains 42-44% of Al according to weight percentage2O3And 56% SiO2The adhesive is high-temperature adhesive powder special for titanium alloy.
Furthermore, in the step 2, β isothermal upsetting cake, the pressing speed is controlled to be 1-4 mm/s by the first 90% deformation amount, and the pressing speed is controlled to be 0.1-0.5 mm/s by the last 10% deformation amount.
Further, in step 3: and (3) final forging forming, controlling the pressing speed to be 1-4 mm/s by the first 90% deformation amount, controlling the pressing speed to be 0.1-0.5 mm/s by the second 10% deformation amount, and releasing the pressure after the pressure is maintained for 100-150 s after the final deformation amount is obtained.
Further, in step 3: the cake blank before preheating in the electric furnace is sprayed with a glass protective agent.
Further, in step 3: the preheating time of the mold before production is more than or equal to 12 hours.
The invention aims to provide a method for forming a disc-shaped forge piece, wherein the forge piece is a disc-shaped workpiece, and the high-power structure of the disc-shaped forge piece is a stable structure of uniform β transformation high-aspect-ratio strip-shaped primary α phase + a very small amount of equiaxed primary α.
Example 1, the specific process of this example is:
the first step is as follows: forging of two-phase region of bar stock
The surface of the bar is polished by a round-head lathe tool, and then the end surfaceChamfered to R10. At TβHeating to 40 deg.C below phase transition point, charging at a certain temperature, and raising furnace temperature to TβThe heat preservation time is recorded at 40 ℃ below the phase transition point, and the cold charge heating heat preservation time is calculated according to 0.8 min/mm. Preheating a tool and a die before forging, wherein the preheating temperature is not lower than 300 ℃, performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil (arc anvil) to obtain a two-phase region tissue with basically uniform and fine tissue.
The second step is that: at TβIsothermal upset cake with temperature of 30 ℃ above phase transition point
The blank is coated by a soft sheath, the coating material consists of fiber felt and adhesive, and the fiber felt consists of 42-44% of Al2O3 and 56% of SiO2The adhesive is high-temperature adhesive powder special for titanium alloy. Heating before heading cake is carried out according to the isothermal heading cake (raw cake) heating curve of figure 1.
Preheating the die before forging to Tβ20 ℃ below the transformation point. And discharging the blank after the blank reaches the heat preservation time, and covering and preserving heat by using a fiber felt in the blank discharging and transferring process. Heating the blank to TβAnd (3) carrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at the temperature of 30 ℃ above the phase transformation point, controlling the pressing speed to be 2mm/s by the first 90% deformation amount and 0.2mm/s by the second 10% deformation amount, and carrying out air cooling after forging to obtain a cake blank.
The third step: at TβFinish forging at 15 ℃ above the transformation point
Preheating the cleaned cake blank in an electric furnace at 300 +/-50 ℃ for 8min, spraying glass protective agent before charging, preheating a mold at 300 +/-50 ℃ before production, and preheating for 12 hours. The heating curve of the finish forging in accordance with FIG. 2 is at TβHeating before forging at 15 deg.C above transformation point.
Heating the biscuit to TβAfter the temperature is 15 ℃ above the transformation point, a press is adopted for finish forging forming, and the pressing speed is controlled by the first 90% deformation: 4mm/s, the pressing speed is controlled by the later 10% deformation: 0.5mm/s, pressing until the final deformation, maintaining the pressure for 150s, and then releasing the pressure. And air cooling after forging.
The fourth step: two-phase zone heat treatment
Primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the phase transition point by 30 ℃ for 90min, and dispersing and air cooling;
secondary annealing: and (4) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
The forged structure state of the forging of the embodiment is tested, the original β grain boundaries of the high-power structure of the forging are broken, no coarse, straight and continuous grain boundary α phase exists, strip-shaped primary α phase with high length-width ratio is uniformly distributed on a transformation β matrix, and the high-length-width-ratio primary α phase contains a small amount of equiaxed primary α phase.
Example 2, the specific process of this example is:
the first step is as follows: forging of two-phase region of bar stock
And after the surface of the bar stock is polished by a round-head lathe tool, chamfering the end face to R15. At TβHeating to 45 deg.C below phase transition point, charging at warm temperature, and raising furnace temperature to TβThe temperature is 45 ℃ below the phase transition point, the heat preservation time is recorded, and the cold charge heating heat preservation time is calculated according to 1 min/mm. Preheating a tool and a die before forging, wherein the preheating temperature is not lower than 300 ℃, performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil (arc anvil) to obtain a two-phase region tissue with basically uniform and fine tissue.
The second step is that: at TβIsothermal upset cake with temperature of 35 ℃ above phase transition point
The blank is coated by a soft sheath, the coating material consists of fiber felt and adhesive, and the composition of the fiber felt is 42-44% of Al2O3And 56% SiO2The adhesive is high-temperature adhesive powder special for titanium alloy. Heating before heading cake is carried out according to the isothermal heading cake (raw cake) heating curve of figure 1.
Preheating the die before forging to TβBelow the transformation point by 30 ℃. And discharging the blank after the blank reaches the heat preservation time, and covering and preserving heat by using a fiber felt in the blank discharging and transferring process. Heating the blank to TβAnd (3) carrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at the temperature of 35 ℃ above the phase transformation point, controlling the pressing speed to be 4mm/s by the first 90% deformation amount and 0.5mm/s by the second 10% deformation amount, and carrying out air cooling after forging to obtain a cake blank.
The third step: at TβFinish forging at 20 ℃ above the transformation pointShape of
Preheating the cleaned cake blank in an electric furnace at 300 +/-50 ℃ for 5min, spraying glass protective agent before charging, preheating a mold at 300 +/-50 ℃ before production, and preheating for 13 hours. The heating curve of the finish forging in accordance with FIG. 2 is at TβHeating before forging at 20 deg.C above transformation point.
Heating the biscuit to TβAfter the temperature is 20 ℃ above the transformation point, a press is adopted for finish forging forming, and the pressing speed is controlled by the first 90% deformation: 2mm/s, the pressing speed is controlled by the later 10% deformation: 0.2mm/s, pressing until the final deformation, maintaining the pressure for 100s, and then releasing the pressure. And air cooling after forging.
The fourth step: two-phase zone heat treatment
Primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the phase transition point by 30 ℃ for 90min, and dispersing and air cooling;
secondary annealing: and (3) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
The forged structure state of the forging of the embodiment is tested, the original β grain boundaries of the high-power structure of the forging are broken, no coarse, straight and continuous grain boundary α phase exists, strip-shaped primary α phase with high length-width ratio is uniformly distributed on a transformation β matrix, and a small amount of equiaxed block-shaped primary α phase is contained.
Example 3, the specific process of this example is:
the first step is as follows: forging of two-phase region of bar stock
And after the surface of the bar stock is polished by a round-head lathe tool, chamfering the end face to R12. At TβHeating to 45 deg.C below phase transition point, charging at warm temperature, and raising furnace temperature to TβThe heat preservation time is recorded at 40 ℃ below the phase transition point, and the cold charge heating heat preservation time is calculated according to 0.8 min/mm. Preheating a tool and a die before forging, wherein the preheating temperature is not lower than 300 ℃, performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil (arc anvil) to obtain a two-phase region tissue with basically uniform and fine tissue.
The second step is that: at TβIsothermal upset cake with temperature of 35 ℃ above phase transition point
The blank is coated by a soft sheath, the coating material is composed of fiber felt and adhesive, and the fiberThe composition of the felt is 42 to 44 percent of Al2O3 and 56 percent of SiO2The adhesive is high-temperature adhesive powder special for titanium alloy. Heating before heading cake is carried out according to the isothermal heading cake (raw cake) heating curve of figure 1.
Preheating the die before forging to TβBelow the transformation point by 25 ℃. And discharging the blank after the blank reaches the heat preservation time, and covering and preserving heat by using a fiber felt in the blank discharging and transferring process. Heating the blank to TβAnd (3) carrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at the temperature of 35 ℃ above the phase transformation point, controlling the pressing speed to be 3mm/s by the first 90% deformation amount and 0.3mm/s by the second 10% deformation amount, and carrying out air cooling after forging to obtain a cake blank.
The third step: at TβFinish forging at 20 ℃ above the transformation point
Preheating the cleaned cake blank in an electric furnace at 300 +/-50 ℃ for 8min, spraying glass protective agent before charging, preheating a mold at 300 +/-50 ℃ before production, and preheating for 12 hours. The heating curve of the finish forging in accordance with FIG. 2 is at TβHeating before forging at 20 deg.C above transformation point.
Heating the biscuit to TβAfter the temperature is 20 ℃ above the transformation point, a press is adopted for finish forging forming, and the pressing speed is controlled by the first 90% deformation: 3mm/s, the pressing speed is controlled by the later 10% deformation: 0.3mm/s, pressing until the final deformation, maintaining the pressure for 150s, and then releasing the pressure. And air cooling after forging.
The fourth step: two-phase zone heat treatment
Primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the phase transition point for 90min at 40 ℃, and dispersing and air cooling;
secondary annealing: and (3) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
The forged structure state of the forging of the embodiment is tested, the original β grain boundaries of the high-power structure of the forging are broken, no coarse, straight and continuous grain boundary α phase exists, strip-shaped primary α phase with high length-width ratio is uniformly distributed on a transformation β matrix, and a small amount of equiaxed block-shaped primary α phase is contained.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. A method of forming a disc shaped forging comprising the steps of:
1) forging the two-phase region of the bar stock;
at furnace temperature lower than TβFilling and heating the bar stock at the temperature of 40-45 ℃ of the phase transition point, and after the furnace temperature is raised to be lower than TβPreserving heat at the phase transformation point of 40-45 ℃, and obtaining a blank after heat preservation is finished; preheating a tool and a die to a temperature not lower than 300 ℃ before forging, and carrying out two-phase region forging change of two-upsetting and two-drawing on a blank;
2) at TβIsothermal upsetting cakes at the temperature of 30-35 ℃ above the phase transformation point;
preheating the die to T before forgingβFilling the blank at a temperature of 20-30 ℃ below the transformation point, and heating the filled blank to TβCarrying out β isothermal upsetting on the cake by adopting an isothermal die forging press at a temperature of 30-35 ℃ above the phase transformation point, and carrying out air cooling after forging to obtain a cake blank;
3) at TβFinish forging at 15-20 ℃ above the transformation point;
preheating the cake blank in an electric furnace at 300 +/-50 ℃ for 5-8 min, preheating a tool and a die to 250-350 ℃ before forging, and heating the cake blank to TβAfter the temperature is 15-20 ℃ above the transformation point, performing finish forging forming on the cake blank by using a press, and performing air cooling after forging;
4) heat treatment in two phase regions;
primary annealing: putting the cake blank after finish forging at TβKeeping the temperature below the phase transition point at 30-40 ℃ for 90min, and then dispersing and air cooling;
secondary annealing: and (4) preserving the temperature of the cake blank subjected to finish forging forming for 360min at 540 ℃, and then dispersing and air cooling.
2. The method of forming a disc forging of claim 1, wherein in step 1: and (3) performing two-phase region forging change of two upsetting and two drawing, and drawing the blank on a V-shaped anvil or an arc anvil.
3. The method of forming a disc forging of claim 1, wherein in step 1: the heat preservation time is calculated according to 0.8-1.0 min/mm.
4. The method of forming a disc forging of claim 1, wherein in step 1: the bar stock is cold stock before heating, the surface is polished by a round-nose lathe tool, and the end face is chamfered to R10-R15.
5. The method of forming a disc forging of claim 1, wherein in step 2: and (3) wrapping a soft sheath in the discharging and transferring process of the blank subjected to heat preservation in the step 1.
6. The method of claim 5, wherein the soft cover is made of fiber felt and adhesive, and the fiber felt contains 42-44% by weight of Al2O3And 56% SiO2The adhesive is high-temperature adhesive powder special for titanium alloy.
7. The method for forming a disc-shaped forging according to claim 1, wherein in step 2, β isothermal upset cake, the former 90% deformation amount control pressing speed is 1-4 mm/s, and the latter 10% deformation amount control pressing speed is 0.1-0.5 mm/s.
8. The method of forming a disc forging of claim 1, wherein in step 3: and (3) final forging forming, controlling the pressing speed to be 1-4 mm/s by the first 90% deformation amount, controlling the pressing speed to be 0.1-0.5 mm/s by the second 10% deformation amount, and releasing the pressure after the pressure is maintained for 100-150 s after the final deformation amount is obtained.
9. The method of forming a disc forging of claim 1, wherein in step 3: the cake blank before preheating in the electric furnace is sprayed with a glass protective agent.
10. The method of forming a disc forging of claim 1, wherein in step 3: the preheating time of the mold before production is more than or equal to 12 hours.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118424A (en) * | 2020-02-27 | 2020-05-08 | 无锡派克新材料科技股份有限公司 | Titanium alloy shaping method |
| CN112708839A (en) * | 2020-12-18 | 2021-04-27 | 陕西宏远航空锻造有限责任公司 | Heat treatment method of TC25 alloy forging |
| CN112775377A (en) * | 2020-12-24 | 2021-05-11 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC11 alloy wheel disc-journal die forging structure performance |
| CN113369428A (en) * | 2021-07-07 | 2021-09-10 | 中国航发北京航空材料研究院 | Preparation method of large-size TC17 titanium alloy beta-forged blisk forging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517530A (en) * | 2011-12-16 | 2012-06-27 | 陕西宏远航空锻造有限责任公司 | Hot working method for improving structure property of Ti5553 titanium alloy |
| CN105483586A (en) * | 2015-12-11 | 2016-04-13 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC18 titanium alloy structure property |
| CN106607540A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Isothermal beta forging method for TC17 titanium alloy blade |
| CN109482796A (en) * | 2018-12-11 | 2019-03-19 | 陕西宏远航空锻造有限责任公司 | A kind of β forging of TC4 titanium alloy disk forging and heat treatment method |
-
2019
- 2019-11-13 CN CN201911108992.9A patent/CN110814250B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517530A (en) * | 2011-12-16 | 2012-06-27 | 陕西宏远航空锻造有限责任公司 | Hot working method for improving structure property of Ti5553 titanium alloy |
| CN106607540A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Isothermal beta forging method for TC17 titanium alloy blade |
| CN105483586A (en) * | 2015-12-11 | 2016-04-13 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC18 titanium alloy structure property |
| CN109482796A (en) * | 2018-12-11 | 2019-03-19 | 陕西宏远航空锻造有限责任公司 | A kind of β forging of TC4 titanium alloy disk forging and heat treatment method |
Non-Patent Citations (4)
| Title |
|---|
| 曹颖玺: "钛合金锻造软包套工艺应用研究", 《航空维修与工程》 * |
| 李艳英，等.: "TC25钛合金近等温锻盘件锻造及热处理工艺研究", 《第十二届全国塑性工程学术年会第四届全球华人塑性加工技术研讨会论文集》 * |
| 王林岐: "TC25钛合金压气机盘锻件工艺选择", 《热加工工艺》 * |
| 王梦寒，等.: "高温钛合金整体叶盘成形均匀性控制研究", 《创新塑性加工技术，推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会学术会议论文集》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118424A (en) * | 2020-02-27 | 2020-05-08 | 无锡派克新材料科技股份有限公司 | Titanium alloy shaping method |
| CN112708839A (en) * | 2020-12-18 | 2021-04-27 | 陕西宏远航空锻造有限责任公司 | Heat treatment method of TC25 alloy forging |
| CN112775377A (en) * | 2020-12-24 | 2021-05-11 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC11 alloy wheel disc-journal die forging structure performance |
| CN112775377B (en) * | 2020-12-24 | 2022-08-23 | 陕西宏远航空锻造有限责任公司 | Forging method for improving structure performance of TC11 alloy wheel disc-journal die forging piece |
| CN113369428A (en) * | 2021-07-07 | 2021-09-10 | 中国航发北京航空材料研究院 | Preparation method of large-size TC17 titanium alloy beta-forged blisk forging |
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