CN106756334A - A kind of production method of aero-engine labyrinth precision die forgingses - Google Patents
A kind of production method of aero-engine labyrinth precision die forgingses Download PDFInfo
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- CN106756334A CN106756334A CN201611227264.6A CN201611227264A CN106756334A CN 106756334 A CN106756334 A CN 106756334A CN 201611227264 A CN201611227264 A CN 201611227264A CN 106756334 A CN106756334 A CN 106756334A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
Abstract
A kind of production method of aero-engine labyrinth precision die forgingses, the present invention relates to a kind of production method of precision die forgingses, it is also easy to produce percolation defect to solve the problems, such as the forging part that existing production technology is obtained.Production method：First, aluminium alloy cast ingot is prepared；2nd, ingot casting is heated and is extruded；3rd, heats forged into forging cake；4th, heating is given molded；5th, treatment is washed in erosion；6th, first time die-forging forming is carried out；7th, the annular muscle that car is gone on forging part；8th, carry out erosion and wash to repair wound；9th, compression molding is carried out on hydraulic press；11, quenching and two-stage time effect treatment.The present invention removes annular muscle by advance car, and coordinates follow-up science to control the process conditions of compression molding, so as to get forging part macrostructure there is not percolation defect, so as to reach raising forging part bearing capacity, the purpose of forging part service life.
Description
Technical field
The present invention relates to a kind of production method of precision die forgingses.
Background technology
With the fast development of China's Aero-Space cause, the performance requirement proposed to ultra-high-strength aluminum alloy structural member is more next
It is higher.Structural member develops towards the direction of high-performance, precise treatment and complication.Casing forging is force structure in engine
Part, the stabilization of structural member performance all plays a very important role to whole engine or even whole airborne vehicle, engine forging part master
Manufactured with ultra-high-strength aluminum alloy, such alloy has close structure, specific strength higher and hardness, anti-corrosion effect strong and higher
Toughness the features such as, be widely used in aerospace field.The stabilization of such forging part performance, can be such that China gradually grasps together
Class technology, reduces the probability of the cracking of engine structure in flight course, and the technology has extensive popularization in aircraft industry
Application value, has important social effect to strengthening the modernization of national defense.
The content of the invention
The invention aims to solve the problems, such as that the forging part that existing production technology is obtained is also easy to produce percolation defect, and carry
For a kind of production method of aero-engine labyrinth precision die forgingses.
The production method of aero-engine labyrinth precision die forgingses of the present invention follow these steps to realize：
First, it is that Si is that≤0.40%, Fe is that≤0.5%, Cu is for 1.2%~2.0%, Mn by the mass percent of element
≤ 0.30%, Mg are that 2.1%~2.9%, Cr is that 0.18%~0.28%, Zn is that 5.1%~6.1%, Ti is≤0.20% He
The aluminium alloy round cast ingot surface clean of balance of Al is clean, the aluminium alloy cast ingot after being cleaned；
2nd, heating extruding is carried out to the aluminium alloy cast ingot after cleaning, obtains rods and bars of aluminium alloy blank；
3rd, on hydraulic press for free forging, control starting forging temperature for 390 DEG C, heating forging is carried out to rods and bars of aluminium alloy blank
Make, obtain aluminium alloy forging cake；
4th, it is 430 DEG C~460 DEG C to control starting forging temperature, and 400 DEG C~435 DEG C of final forging temperature, forging cake is placed in mould and carries out
Molded treatment is given in heating, obtains giving press forging part；
5th, what is step 4 obtained gives press forging part to carry out erosion washing treatment, press forging part is given after being cleaned；
6th, control starting forging temperature for 420 DEG C~460 DEG C, 400 DEG C~430 DEG C of final forging temperature, the press forging part that gives after cleaning is put
First time die-forging forming is carried out in mould, forging part is obtained；
7th, the forging part that step 6 is obtained is machined, removes the annular muscle on forging part, after the machine of obtaining adds
Forging part；
8th, the forging part after adding to machine carries out erosion to be washed and repaiies wound, obtains losing the forging part after washing；
The 9th, upper die and lower die are installed, it is 400 DEG C~455 DEG C with final forging temperature for 400 DEG C~455 DEG C to control starting forging temperature,
Four compression moldings, forging part after being molded are carried out on hydraulic press；
Tenth, forging part carries out erosion and washes treatment after the shaping obtained to step 9, the forging part for being cleaned；
11, the forging part of cleaning is carried out into Quenching Treatment, then carries out two-stage time effect treatment, the temperature of one-level timeliness is
105 DEG C~120 DEG C, 6~10 hours are incubated, the temperature of secondary time effect is 170 DEG C~185 DEG C, is incubated 6~10 hours, completes essence
The production of close forging part.
The present invention after the annular muscle machine of the forging part of first time die-forging forming is added to fall, metal one during second die-forging forming
Die cavity is partially filled with, a part flows to web, because metal refills die cavity, in cavity portion not by resistance, and
It is subject to resistance, metal to be easy to full of die cavity at web, it is impossible to which shortcut of going further flows to web, and the streamline of metal is completely along die cavity
Direction, reaches good effect.When the forging part produced by present invention process carries out macrostructure comparative analysis, die forging is obtained
There is not percolation defect in part macrostructure, and forging part bearing capacity, the purpose of forging part service life are improved so as to reach.
Aero-engine labyrinth precision die forgingses of the present invention are engine crankcase labyrinth forging part, and
Can be applied in similar to the actual production of this annular muscle forging part, solve the problem of low power percolation in this kind of forging part.
Brief description of the drawings
Fig. 1 is the structural representation of the forging part with annular muscle in embodiment；
Fig. 2 be embodiment in remove annular muscle forging part structural representation；
Fig. 3 is the forging part metal macrostructure inspection figure with percolation defect, representative percolation defect at arrow；
The forging part metal macrostructure inspection figure that Fig. 4 is obtained for embodiment, non-draining defect at arrow.
Specific embodiment
Specific embodiment one：The production method of present embodiment aero-engine labyrinth precision die forgingses is by following
Step is implemented：
First, it is that Si is that≤0.40%, Fe is that≤0.5%, Cu is for 1.2%~2.0%, Mn by the mass percent of element
≤ 0.30%, Mg are that 2.1%~2.9%, Cr is that 0.18%~0.28%, Zn is that 5.1%~6.1%, Ti is≤0.20% He
The aluminium alloy round cast ingot surface clean of balance of Al is clean, the aluminium alloy cast ingot after being cleaned；
2nd, heating extruding is carried out to the aluminium alloy cast ingot after cleaning, obtains rods and bars of aluminium alloy blank；
3rd, on hydraulic press for free forging, control starting forging temperature for 390 DEG C, heating forging is carried out to rods and bars of aluminium alloy blank
Make, obtain aluminium alloy forging cake；
4th, it is 430 DEG C~460 DEG C to control starting forging temperature, and 400 DEG C~435 DEG C of final forging temperature, forging cake is placed in mould and carries out
Molded treatment is given in heating, obtains giving press forging part；
5th, what is step 4 obtained gives press forging part to carry out erosion washing treatment, press forging part is given after being cleaned；
6th, control starting forging temperature for 420 DEG C~460 DEG C, 400 DEG C~430 DEG C of final forging temperature, the press forging part that gives after cleaning is put
First time die-forging forming is carried out in mould, forging part is obtained；
7th, the forging part that step 6 is obtained is machined, removes the annular muscle on forging part, after the machine of obtaining adds
Forging part；
8th, the forging part after adding to machine carries out erosion to be washed and repaiies wound, obtains losing the forging part after washing；
The 9th, upper die and lower die are installed, it is 400 DEG C~455 DEG C with final forging temperature for 400 DEG C~455 DEG C to control starting forging temperature,
Four compression moldings, forging part after being molded are carried out on hydraulic press；
Tenth, forging part carries out erosion and washes treatment after the shaping obtained to step 9, the forging part for being cleaned；
11, the forging part of cleaning is carried out into Quenching Treatment, then carries out two-stage time effect treatment, the temperature of one-level timeliness is
105 DEG C~120 DEG C, 6~10 hours are incubated, the temperature of secondary time effect is 170 DEG C~185 DEG C, is incubated 6~10 hours, completes essence
The production of close forging part.
It is 400~450 DEG C that present embodiment step 2 controls the heating-up temperature of aluminium alloy cast ingot, step 3 control blank
Heating-up temperature is 430~450 DEG C.
Aero-engine labyrinth described in present embodiment is the upper end cover of engine crankcase, and the production method can be fitted
For dome class forging part.Fig. 1 and Fig. 2 show the upper end cover forging part of aero-engine, and the forging precision is high, are directly to fill
Parts.Spread all over circular protrusions inside and outside forging, the intermediate annular muscle and web of forging are than relatively thin only 9mm, forging edge and centre
Annular muscle position is into a ladder.Circular forging or class of the present invention suitable for appearance and size diameter in Φ 200mm~Φ 600mm are justified
Forging part of the shape with reinforcement and easy percolation.The total under-voltage amount requirement of forging part described in present embodiment is 0~+2mm, is owed
Pressure amount is data difference of the forging in short transverse after each die-forging forming.
Present embodiment forging part give it is molded, erosion wash repair wound after, by first time die-forging forming, then in machine extra bus
On bed, the annular muscle on forging part is carried out into whole machines and adds to fall, carry out erosion and wash to repair wound, then carried out on hydraulic press four times it is final
Die-forging forming.
Present embodiment not only solves the problem of forging part macrostructure percolation, meets standard requirement, and improve
The overall performance of engine, increased forging part service life.
Specific embodiment two：Present embodiment obtains aluminium alloy cast ingot from step one unlike specific embodiment one
Contraction rule cun be Φ 350mm~Φ 680mm.Other steps and parameter are identical with specific embodiment one.
Specific embodiment three：Present embodiment is cast from aluminium alloy in step 2 unlike specific embodiment one or two
The heating-up temperature of ingot is 400 DEG C~450 DEG C, 320 DEG C~420 DEG C of recipient temperature.Other steps and parameter and specific embodiment
One or two is identical.
Specific embodiment four：Aluminium is closed in step 2 unlike one of present embodiment and specific embodiment one to three
A diameter of Φ 170mm~Φ 250mm of golden Bar material blank.One of other steps and parameter and specific embodiment one to three phase
Together.
Specific embodiment five：Step 3 control unlike one of present embodiment and specific embodiment one to four from
Flat anvil temperature is 350 DEG C~400 DEG C during by forging.Other steps and parameter are identical with one of specific embodiment one to four.
Specific embodiment six：Step 3 Al alloy unlike one of present embodiment and specific embodiment one to five
The height for forging cake is 30mm~180mm.Other steps and parameter are identical with one of specific embodiment one to five.
Specific embodiment seven：Step 4 and step unlike one of present embodiment and specific embodiment one to six
The temperature of mould is 360 DEG C~380 DEG C in six.Other steps and parameter are identical with one of specific embodiment one to six.
Specific embodiment eight：Place is washed in described erosion unlike one of present embodiment and specific embodiment one to seven
Reason is that 5~20 points of fat of wash-out is first lost in the alkali tank liquor that the mass concentration that temperature is 50 DEG C~70 DEG C is 10%~20%NaOH
Clock, then cleans alkali lye, then is 20%~40%HNO in mass concentration3Acid tank in neutralize whiten 3~8 minutes, cleaned acid
Liquid, finally rinses forging in the hot water storgae that water temperature is 50~80 DEG C.Other steps and parameter and specific embodiment one to seven
One of it is identical.
Specific embodiment nine：In step 9 unlike one of present embodiment and specific embodiment one to eight mould and
Using husky ingot oil as lubricant in lower mould.Other steps and parameter are identical with one of specific embodiment one to eight.
Pressure must be twice lubricated during present embodiment final pressure, is then lifted and above pressed again after car is deflated, to ensure shaping.Profit
Lubricating oil can be using husky ingot oil plus a small amount of graphite lubrication.Forging flash cuts off on sawing machine, and the residual quantity for cutting rear flash is less than or waits
In 2mm.
Specific embodiment ten：Step 9 is in hydraulic pressure unlike one of present embodiment and specific embodiment one to nine
Four compression moldings are carried out on machine, the under-voltage amount of first time is controlled for 7mm~8mm, secondary under-voltage amount is 5mm~6mm, the
The under-voltage amount of three times is 3mm~4mm, and the under-voltage amount of the 4th time is 0mm~+2mm.Other steps and parameter and specific embodiment
One of one to nine is identical.
Specific embodiment 11：Step 11 unlike one of present embodiment and specific embodiment one to ten is quenched
The hardening heat of fire treatment is 460 DEG C~510 DEG C, and the soaking time of quenching is 70~100 minutes, and the temperature of quenching water used is
30 DEG C~50 DEG C.Other steps and parameter are identical with one of specific embodiment one to ten.
Embodiment：The production method of the present embodiment aero-engine labyrinth precision die forgingses follow these steps to implement：
First, by the mass percent of element be Si for 0.29%, Fe be that 0.39%, Cu is that 1.62%, Mn is 0.21%, Mg
It is that 2.58%, Cr is that 0.19%, Zn is that 5.73%, Ti is 0.15% and the aluminium alloy round cast ingot surface clean of balance of Al is dry
Only, it is the aluminium alloy cast ingot after 482 × 1000mm of Φ cleanings to obtain size；
2nd, heating extruding is carried out to the aluminium alloy cast ingot after cleaning, it is 490 DEG C, recipient to control the heating-up temperature of ingot casting
420 DEG C of temperature, diameter of phi 170mm, the rods and bars of aluminium alloy blank of length 270mm are obtained using 5000 tons of horizontal water press extruding；
3rd, on hydraulic press for free forging, control rods and bars of aluminium alloy blank heating-up temperature for 450 DEG C, starting forging temperature is 390
DEG C, heats forged is carried out to rods and bars of aluminium alloy blank using vertical hydraulic press for free forging, obtain the aluminium alloy of height H=40mm
Forging cake；
4th, it is 480 DEG C to control forging cake heating-up temperature, and starting forging temperature is 454 DEG C, 432 DEG C of final forging temperature, and mold temperature is
401 DEG C, forging cake is placed in mould and carries out heating and give molded treatment, obtains giving press forging part；
5th, what is step 4 obtained gives press forging part to carry out erosion washing treatment, press forging part is given after being cleaned；
6th, it is 480 DEG C to control to give press forging part heating-up temperature, and starting forging temperature is 453 DEG C, 426 DEG C of final forging temperature, mold temperature
It is 405 DEG C, gives press forging part to be placed in carrying out first time die-forging forming in mould, obtain forging part after cleaning；
7th, the forging part that step 6 is obtained is machined, removes the annular muscle on forging part, after the machine of obtaining adds
Forging part, as shown in Figure 2；
8th, the forging part after adding to machine carries out erosion to be washed and repaiies wound, obtains losing the forging part after washing；
The 9th, upper die and lower die are installed, it is 452 DEG C with final forging temperature for 454 DEG C to control starting forging temperature, is carried out on hydraulic press
Four compression moldings, it is 8mm to control the under-voltage amount being molded for the first time, and secondary under-voltage amount is 5mm, and the under-voltage amount of third time is
3mm, the under-voltage amount of the 4th time is+2mm, finally obtains forging part after shaping；
Tenth, forging part carries out erosion and washes treatment after the shaping obtained to step 9, the forging part for being cleaned；
11, the forging part of cleaning is carried out into Quenching Treatment, hardening heat is 505 DEG C, the soaking time of quenching is 90 points
Clock, then carries out two-stage time effect treatment, and the temperature of one-level timeliness is 113 DEG C, is incubated 8 hours, and the temperature of secondary time effect is 179
DEG C, 8 hours are incubated, complete the production of precision die forgingses.
The aero-engine labyrinth precision die forgingses obtained to the present embodiment enter row metal macrostructure and check and right
Than analyzing, as shown in Figures 3 and 4, it is known that the forging part of the present embodiment does not exist macrostructure percolation defect, so as to improve die forging
Part bearing capacity, cracking behavior and toughness etc., and increase forging part service life.The anti-stress corrosiveness of the precision die forgingses for obtaining
Can be 20 days (temperature is 35 DEG C) stress-free corrosion crackings of loading 276MPa perseverances varying stress, wherein corrosive medium is 3.5%NaCl
Solution.
Claims (10)
1. a kind of production method of aero-engine labyrinth precision die forgingses, it is characterised in that be to follow these steps to realize：
First, by the mass percent of element be Si be≤0.40%, Fe be≤0.5%, Cu be 1.2%~2.0%, Mn for≤
0.30%, Mg are that 2.1%~2.9%, Cr is that 0.18%~0.28%, Zn is that 5.1%~6.1%, Ti is≤0.20% and remaining
Measure as the aluminium alloy round cast ingot surface clean of Al is clean, the aluminium alloy cast ingot after being cleaned；
2nd, heating extruding is carried out to the aluminium alloy cast ingot after cleaning, obtains rods and bars of aluminium alloy blank；
3rd, on hydraulic press for free forging, control starting forging temperature for 390 DEG C, heats forged is carried out to rods and bars of aluminium alloy blank, obtain
Cake is forged to aluminium alloy；
4th, it is 430 DEG C~460 DEG C to control starting forging temperature, and 400 DEG C~435 DEG C of final forging temperature, forging cake is placed in mould and is heated
Molded treatment is given, obtains giving press forging part；
5th, what is step 4 obtained gives press forging part to carry out erosion washing treatment, press forging part is given after being cleaned；
6th, control starting forging temperature for 420 DEG C~460 DEG C, 400 DEG C~430 DEG C of final forging temperature, the press forging part that gives after cleaning is placed in mould
First time die-forging forming is carried out in tool, forging part is obtained；
7th, the forging part that step 6 is obtained is machined, removes the annular muscle on forging part, the machine of obtaining add after die forging
Part；
8th, the forging part after adding to machine carries out erosion to be washed and repaiies wound, obtains losing the forging part after washing；
The 9th, upper die and lower die are installed, it is 400 DEG C~455 DEG C with final forging temperature for 400 DEG C~455 DEG C to control starting forging temperature, in water
Four compression moldings, forging part after being molded are carried out on press；
Tenth, forging part carries out erosion and washes treatment after the shaping obtained to step 9, the forging part for being cleaned；
11, the forging part of cleaning is carried out into Quenching Treatment, then carries out two-stage time effect treatment, the temperature of one-level timeliness is 105
DEG C~120 DEG C, 6~10 hours are incubated, the temperature of secondary time effect is 170 DEG C~185 DEG C, is incubated 6~10 hours, completes accurate mould
The production of forging.
2. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
The contraction rule cun for obtaining aluminium alloy cast ingot in step one is Φ 350mm~Φ 680mm.
3. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
The heating-up temperature of aluminium alloy cast ingot is 400 DEG C~450 DEG C, 320 DEG C~420 DEG C of recipient temperature in step 2.
4. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
A diameter of Φ 170mm~Φ 250mm of rods and bars of aluminium alloy blank in step 2.
5. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
Flat anvil temperature is 350 DEG C~400 DEG C when step 3 controls flat-die forging.
6. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
The height of aluminium alloy forging cake is 30mm~180mm in step 3.
7. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
The temperature of mould is 360 DEG C~380 DEG C in step 4 and step 6.
8. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
It is first to be lost in the alkali tank liquor that the mass concentration that temperature is 50 DEG C~70 DEG C is 10%~20%NaOH to wash treatment in described erosion
Wash-out fat 5~20 minutes, then cleans alkali lye, then is 20%~40%HNO in mass concentration3Acid tank in neutralize whiten 3~8
Minute, acid solution is cleaned, finally rinse forging in the hot water storgae that water temperature is 50~80 DEG C.
9. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
In oily as lubricant using husky ingot in step 9 upper die and lower die.
10. a kind of production method of aero-engine labyrinth precision die forgingses according to claim 1, its feature exists
It it is 460 DEG C~510 DEG C in the hardening heat of step 11 Quenching Treatment, the soaking time of quenching is 70~100 minutes, and quench institute
It it is 30 DEG C~50 DEG C with the temperature of water.
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| CN107931498A (en) * | 2017-12-15 | 2018-04-20 | 东北轻合金有限责任公司 | The preparation method of submersible High Pressure Shell aluminum alloy die forgings |
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| CN107931498A (en) * | 2017-12-15 | 2018-04-20 | 东北轻合金有限责任公司 | The preparation method of submersible High Pressure Shell aluminum alloy die forgings |
| CN109108196A (en) * | 2018-07-25 | 2019-01-01 | 东北轻合金有限责任公司 | A kind of preparation method of aircraft wing high-strength/tenacity aluminum alloy forging part |
| CN109515741B (en) * | 2018-12-05 | 2022-07-26 | 西南铝业（集团）有限责任公司 | Production process of main undercarriage supporting joint die forging for airplane |
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| CN110423924A (en) * | 2019-08-15 | 2019-11-08 | 张永伟 | A kind of forging and heat treatment process of open die forgings |
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| CN114453540B (en) * | 2021-12-28 | 2023-09-29 | 东北轻合金有限责任公司 | Production method of V-shaped high-strength die forging for military aircraft |
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