CN106180506A - A kind of GH4169 stator blade closed die forging method - Google Patents
A kind of GH4169 stator blade closed die forging method Download PDFInfo
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- CN106180506A CN106180506A CN201610752950.9A CN201610752950A CN106180506A CN 106180506 A CN106180506 A CN 106180506A CN 201610752950 A CN201610752950 A CN 201610752950A CN 106180506 A CN106180506 A CN 106180506A
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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
- B21J5/025—Closed die forging
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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
- B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
- B21K3/04—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of GH4169 stator blade closed die forging method, purpose is, simplification of flowsheet, cost-effective, guarantee part performance simultaneously, the technical scheme used is: the leaf basin profile to forging respectively according to stator blade part, blade back profile, cross sectional shape and the forging length of forging are designed, then closed molds is designed according to the shape of forging, upper model cavity is according to forging leaf basin quasi spline, lower mold die cavity is according to forging blade back quasi spline, and upper mold height of projection height recessed with lower mold is identical, upper mold boss and the laminating of lower mold groove two sides sidewall；By calculating diameter and the length of GH4169 blank, make blank specification suitable, and combine the closed molds design without burr, avoid the excessive mold damage of specification, or the problem that the too small forging of specification can not be full of mould, blank carried out forging after entering heating and thermal insulation and obtains forging, and forging obtains GH4169 stator blade after removing surface and heat treatment.
Description
Technical field
The invention belongs to technical field of forging, be specifically related to a kind of GH4169 stator blade closed die forging method.
Background technology
GH4169 material is widely used in a new generation's electromotor, especially blade parts, and these parts need logical
Cross forging, it is ensured that higher metallurgy index.The grain size of forging requires 7 grades or thinner, and forging δ (Ni3Nb) should be rod mutually
Shape or graininess.The forging production cycle is long, needs group to make substantial amounts of frock, and forging metallurgical performance index is unstable.Existing forging
Making method, manufacture process includes extruding, finish-forging, trimming, heat treatment.Use many molds, including extrusion die, finisher
Tool, shaving die, forging blade manufacturing cost is high, and the number of molds of employing is many, causes manufacturing cost higher, is not suitable for small quantities of
Manufacturing cycle secondary, short, and technical process is complex.
Summary of the invention
In order to solve the problems of the prior art, the present invention proposes one and simplifies technological process, has saved cost, simultaneously
Guarantee the GH4169 stator blade closed die forging method of part performance.
In order to realize object above, the technical solution adopted in the present invention is: comprise the following steps:
1) leaf basin profile, blade back profile, the cross sectional shape of forging and the forging to forging respectively according to stator blade part
Length is designed；
2) designing closed molds according to the shape of forging, including upper die and lower die, upper model cavity is according to forging leaf basin profile
Design, lower mold die cavity is according to forging blade back quasi spline, and upper mold height of projection height recessed with lower mold is identical, upper mold boss with
The sidewall laminating of lower mold groove two sides；
3) calculate diameter and the length of GH4169 blank, prepare blank；
4) blank is carried out heating and thermal insulation；
5) blank is put into the lower mold modular angle of closed molds, along longitudinally collapsing 0.7～0.8 times to diameter, then will pressure
Flat blank turns 90 ° along axis and puts into the continuous hammering of lower mold die cavity, it is ensured that upper and lower mould is beaten and leaned on, forging molding；
6) forging of molding is carried out removing surface；
7), after forging being carried out solution heat treatment, GH4169 stator blade is i.e. obtained.
Described step 1) in the design of forging specifically include: forging thickness direction is along the leaf basin profile of stator blade and blade back
Profile outside normal direction respectively places the surplus of 3mm, obtains leaf basin profile and the blade back profile of forging；Forging string cross direction is along stator
Enter limit and the row limit of blade stretch out after 3mm respectively, do tangent line, angle from blade back direction toward leaf basin direction on the circular arc obtained
Degree is 5 °, and intersects with the extension of leaf basin profile, obtains the cross sectional shape of forging；Forging length direction is along stator blade length two ends
Stretch out 4mm respectively, i.e. completes forging design.
Described step 2) in upper model cavity protrude mould datum level height 15mm～20mm, lower mold die cavity recessed lower mold benchmark
Face 15mm～20mm.
Described step 2) in protruding in upper mold and that lower mold is recessed sidewall the pattern draft in 5 ° of inclination angles is set.
Described step 2) in upper die and lower die die cavity at length direction, add 5mm surplus according to forging length dimension.
Described step 3) in blank diameterA is the transversal of stator blade forging
Face area；Length L of blank calculates according to constant-volume principle, L=4V/ (3.14D2), V is the volume of blade forging.
Described step 4) in blank use high-temperature box type electric furnace heating, holding temperature 1010 ± 10 DEG C, temperature retention time is pressed
Calculate according to (1.0～1.2) min/mm.
Described step 5) the middle die cavity uniform application using liquid die hammer that blank is forged, and forging front closed molds
There is colloidal graphite mixed with water.
Described step 6) in molding forging use Shot Blasting, clear up forging surface scale.
Described step 7) in use high-temperature electric resistance furnace that forging carries out solution heat treatment, holding temperature 965 ± 10 DEG C, be incubated 60
Air cooling after minute.
Compared with prior art, the present invention according to stator blade part respectively to the leaf basin profile of forging, blade back profile, forging
Cross sectional shape and the forging length of part are designed, and then design closed molds according to the shape of forging, and upper model cavity is according to forging
Part leaf basin quasi spline, lower mold die cavity is according to forging blade back quasi spline, and upper mold height of projection height recessed with lower mold is identical,
Upper mold boss and the laminating of lower mold groove two sides sidewall, can either play control forging and offset, be prevented from again burr and produce；Logical
Cross diameter and the length calculating GH4169 blank, make blank specification suitable, and combine the closed molds design without burr, it is to avoid
The excessive mold damage of specification, or the too small forging of specification can not be full of the problem of mould, and blank was forged after entering heating and thermal insulation
Making and obtain forging, forging obtains GH4169 stator blade after removing surface and heat treatment, and the present invention is only with a set of forging
Modeling tool just can complete forge, cost is relatively low, simplifies technological process, and ensure that part performance, be particularly suitable for small batch,
The working scene of short manufacturing cycle.The GH4169 stator blade deformation that the present invention obtains is consistent, and blade forging tenon and blade are brilliant
Granularity can uniformly reach 10 grades, and δ (Ni3Nb) should be graininess mutually, and the forging production cycle shortens 3 times, it is only necessary to a set of forging die, greatly
Save greatly manufacturing cost.
Further, protruding in upper mold and that lower mold is recessed sidewall arranges the pattern draft of 5 °, it is simple to depanning, upper mold boss and
The sidewall laminating of lower mold groove two sides, both can play control forging and offset, and be possible to prevent again burr to produce and form closed molds,
Upper and lower model cavity, at length direction, places 5mm again according to forging length dimension, make die cavity length direction leave certain between
Gap, guarantees during forging that mold cavity is not cracked.
Further, owing to the inventive method uses closed die forging, therefore blank specification strictly to be calculated, strictly control base
The diameter of material and length, it is to avoid specification is too big, due to the problem being easily damaged mould without burr design；Or specification is the least,
The problem that forging can not be full of.
Accompanying drawing explanation
Fig. 1 is the forging drawing obtained after part drawing places surplus, and in figure, double dot dash line is blade part schematic diagram, solid line table
Showing forging schematic diagram, do tangent line from blade back direction toward leaf basin direction, angle, θ is 5 °；
Fig. 2 is the structural representation of closed molds, 1-upper mold, 2-lower mold, 3-die cavity.
Detailed description of the invention
Below in conjunction with specific embodiment and Figure of description, the present invention is further explained.
The inventive method mainly includes forging design, closed molds design and the formulation of process route, dominating process route
For: Blank calculation, heating, closed die forging, cleaning and heat treatment.Specific as follows:
1, forging design: see Fig. 1, vane thickness direction: according to stator blade part leaf basin, each outside method of blade back profile
To placing the surplus of 3mm, obtain the leaf basin of forging, leaf back；Chord of blade cross direction: according to the entering of stator blade part, arrange limit
Respectively stretching out after 3mm, do tangent line from blade back direction toward leaf basin direction on the circular arc obtained, angle is 5 °, and in forging leaf
Basin profile extends crossing, obtains stator blade forging cross sectional shape；Length of blade direction: according to stator blade part length two ends
The 4mm that respectively stretches out obtains blade forging；Fig. 1 is the forging drawing obtained after part drawing places surplus；
2, closed molds design: see Fig. 2, including upper mold 1 and lower mold 2, enclosed die cavity 3 part: upper model cavity is according to forging
Part leaf pelvic surface of sacrum designs, and protrudes mould datum level height 15mm～20mm；Lower mold die cavity is according to forging blade back quasi spline and recessed
Entering lower mold datum level 15mm～20mm, upper mold height of projection height recessed with lower mold should keep consistent；Protruding and the lower mold in upper mold
Recessed sidewall is pattern draft according to 5 ° of designs, this angle；Upper mold boss and the laminating of lower mold groove two sides sidewall, the most permissible
Play control forging to offset, be possible to prevent again burr to produce and form closed molds；Upper and lower model cavity is at length direction, according to forging
Part length dimension places 5mm again, makes die cavity leave certain gap at length direction, it is ensured that mold cavity is not cracked.
3, Blank calculation: owing to using closed die forging, therefore strictly to calculate blank specification, specification is too big, due to nothing
Burr design, and are easily damaged mould；Specification is the least, and forging can not be full of, and the diameter of blank is by the forging cross section of original blade
Long-pending calculating:
Blank diameterA is the cross-sectional area of blade forging；The length of blank
L calculates according to constancy of volume, L=4V/ (3.14D2), V is the volume of blade forging
4, blank heating: blank specification is less than φ 40mm, it is not necessary to preheating, selects high-temperature box type electric furnace heating, holding temperature
1010 ± 10 DEG C, temperature retention time calculates execution according to (1.0～1.2) min/mm；
5, closed die forging: select electro-hydraulic die hammer to forge, forging uses colloidal graphite mixed with water uniform application before producing
Mold cavity, places the blanks on lower mold modular angle, along longitudinally collapsing 0.7～0.8 times to diameter, then by the blank of flattening along axle
Line turns 90 ° and puts into lower mold die cavity, continuous hammering three times, it is ensured that upper/lower die is beaten and leaned on, forging molding；
6, cleaning: forging carries out impeller blasting, removes forging surface small amounts skin；
7, heat treatment: select high-temperature electric resistance furnace to carry out solution heat treatment, holding temperature 965 ± 10 DEG C, sky after being incubated 60 minutes
Cold, i.e. obtain GH4169 stator blade.
The present invention deforms unanimously, and blade forging tenon and blade grain size can uniformly reach 10 grades, and δ (Ni3Nb) should be mutually
Graininess, forging production cycle shortening 3 times, it is only necessary to a set of forging die, it is greatly saved manufacturing cost.
Embodiment one:
1, forging design: according to Fig. 1, vane thickness direction: according to stator blade part leaf basin, each outside method of blade back profile
To placing the surplus of 3mm, obtain the leaf basin of forging, leaf back；Chord of blade cross direction: according to the entering of stator blade part, arrange limit
Respectively stretching out after 3mm, do tangent line from blade back direction toward leaf basin direction on the circular arc obtained, angle is 5 °, and in forging leaf
Basin profile extends crossing, obtains stator blade forging cross sectional shape；Length of blade direction: according to stator blade part length two ends
The 4mm. that respectively stretches out obtains blade forging；
2, closed molds design: include upper die and lower die, closed mould cavity segment: upper model cavity sets according to forging leaf pelvic surface of sacrum
Meter, and protrude mould datum level height 15mm；Lower mold die cavity is according to forging blade back quasi spline, and recessed lower mold datum level
15mm, upper mold height of projection height recessed with lower mold should keep consistent, sets according to 5 ° at the sidewall that upper mold is protruding and lower mold is recessed
Meter, this angle is pattern draft；Upper mold boss and the laminating of lower mold groove two sides sidewall, both can play control forging and offset,
It is possible to prevent again burr to produce and forms closed molds；Upper and lower model cavity, at length direction, places according to forging length dimension again
5mm, makes die cavity leave certain gap at length direction, it is ensured that mold cavity is not cracked；
3, Blank calculation: owing to the method uses closed die forging, therefore blank specification strictly to be calculated, specification is too big,
Owing to designing without burr, it is easily damaged mould；Specification is the least, and forging can not be full of, and the diameter of blank is by the forging of original blade
Cross-sectional area calculates: blank diameterA is 906.4mm2, obtaining blank diameter D is
35mm, coefficient takes 1.03；Length L of blank calculates according to constancy of volume, L=4V/ (3.14D2), V is 65262.5mm3,
Obtaining charge length L is 72mm；
4, blank heating: blank specification is less than φ 40mm, it is not necessary to preheating, selects high-temperature box type electric furnace heating, holding temperature
1010 ± 10 DEG C, temperature retention time performs according to (1.0～1.2) min/mm, is incubated 35min；
5, closed die forging: select electro-hydraulic die hammer to forge, every forging is uniformly coated with colloidal graphite mixed with water before producing
Smear mold cavity, place the blanks on lower mold modular angle, along longitudinally collapsing 0.7～0.8 times to diameter, the blank edge then will flattened
Axis turns 90 ° and puts into lower mold die cavity, continuous hammering three times, it is ensured that upper/lower die is beaten and leaned on, forging molding；
6, cleaning: forging carries out impeller blasting, removes forging surface small amounts skin；
7, heat treatment: select high-temperature electric resistance furnace to carry out solution heat treatment, holding temperature 965 ± 10 DEG C, be incubated 60 minutes, empty
Cold.
Embodiment two:
1, forging designs ibid；
2, closed molds design: include upper die and lower die, closed mould cavity segment: upper model cavity sets according to forging leaf pelvic surface of sacrum
Meter, and protrude mould datum level height 20mm；Lower mold die cavity is according to forging blade back quasi spline, and recessed lower mold datum level
20mm, upper mold height of projection height recessed with lower mold should keep consistent；Set according to 5 ° at the sidewall that upper mold is protruding and lower mold is recessed
Meter, this angle is pattern draft；Upper mold boss and the laminating of lower mold groove two sides sidewall, both can play control forging and offset,
It is possible to prevent again burr to produce and forms closed molds；Upper and lower model cavity, at length direction, places according to forging length dimension again
5mm, makes die cavity leave certain gap at length direction, it is ensured that mold cavity is not cracked；
3, Blank calculation: owing to the method uses closed die forging, therefore blank specification strictly to be calculated, specification is too big,
Owing to designing without burr, it is easily damaged mould；Specification is the least, and forging can not be full of, and the diameter of blank is by the forging of original blade
Cross-sectional area calculates:
Blank diameterA is 1028.2mm2, obtaining blank diameter D is 38mm,
Coefficient takes 1.05；
Length L of blank calculates according to constancy of volume, L=4V/ (3.14D2), V is 77111.6mm3, obtain blank
Length L is 75mm；
4, blank heating: blank specification is less than φ 40mm, it is not necessary to preheating, selects high-temperature box type electric furnace heating, holding temperature
1010 ± 10 DEG C, temperature retention time performs according to (1.0～1.2) min/mm, is incubated 46min；
5, closed die forging: select electro-hydraulic die hammer to forge.Every forging is uniformly coated with colloidal graphite mixed with water before producing
Smear mold cavity, place the blanks on lower mold modular angle, along longitudinally collapsing 0.7～0.8 times to diameter, the blank edge then will flattened
Axis turns 90 ° and puts into lower mold die cavity, continuous hammering three times, it is ensured that upper/lower die is beaten and leaned on, forging molding；
6, cleaning: forging carries out impeller blasting, removes forging surface small amounts skin；
7, heat treatment: select high-temperature electric resistance furnace to carry out solution heat treatment, holding temperature 965 ± 10 DEG C, be incubated 60 minutes, empty
Cold.
The present invention just can complete forging only with a set of forging mold, and cost is relatively low, simplifies technological process, and protects
Demonstrate,prove part performance, be particularly suitable for small batch, the working scene of short manufacturing cycle.The GH4169 stator blade that the present invention obtains becomes
Shape is consistent, and blade forging tenon and blade grain size can uniformly reach 10 grades, and δ (Ni3Nb) should be graininess mutually, and forging produces week
Phase shortens 3 times, it is only necessary to a set of forging die, is greatly saved manufacturing cost.
Claims (10)
1. a GH4169 stator blade closed die forging method, it is characterised in that comprise the following steps:
1) leaf basin profile, blade back profile, the cross sectional shape of forging and the forging length to forging respectively according to stator blade part
It is designed；
2) design closed molds according to the shape of forging, including upper die and lower die, upper model cavity according to forging leaf basin quasi spline,
Lower mold die cavity is according to forging blade back quasi spline, and upper mold height of projection height recessed with lower mold is identical, upper mold boss and lower mold
The sidewall laminating of groove two sides；
3) calculate diameter and the length of GH4169 blank, prepare blank；
4) blank is carried out heating and thermal insulation；
5) blank is put into the lower mold modular angle of closed molds, along longitudinally collapsing 0.7～0.8 times to diameter, then by flattening
Blank turns 90 ° along axis and puts into the continuous hammering of lower mold die cavity, it is ensured that upper and lower mould is beaten and leaned on, forging molding；
6) forging of molding is carried out removing surface；
7), after forging being carried out solution heat treatment, GH4169 stator blade is i.e. obtained.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 1)
The design of middle forging specifically includes: forging thickness direction adds along leaf basin profile and the blade back profile outside normal direction respectively of stator blade
Put the surplus of 3mm, obtain leaf basin profile and the blade back profile of forging；Forging string cross direction divides along enter limit and the row limit of stator blade
Not stretching out after 3mm, do tangent line from blade back direction toward leaf basin direction on the circular arc obtained, angle is 5 °, and with leaf basin type
Face extends intersects, and obtains the cross sectional shape of forging；Forging length direction stretches out respectively along stator blade length two ends 4mm,
I.e. complete forging design.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 2)
On in, model cavity protrudes mould datum level height 15mm～20mm, lower mold die cavity recessed lower mold datum level 15mm～20mm.
A kind of GH4169 stator blade closed die forging method the most according to claim 3, it is characterised in that described step 2)
In protruding in upper mold and that lower mold is recessed sidewall the pattern draft in 5 ° of inclination angles is set.
A kind of GH4169 stator blade closed die forging method the most according to claim 4, it is characterised in that described step 2)
Middle upper die and lower die die cavity, at length direction, adds 5mm surplus according to forging length dimension.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 3)
Middle blank diameterA is the cross-sectional area of stator blade forging；Length L of blank
Calculate according to constant-volume principle, L=4V/ (3.14D2), V is the volume of blade forging.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 4)
In to blank use high-temperature box type electric furnace heating, holding temperature 1010 ± 10 DEG C, temperature retention time is according to (1.0～1.2) min/mm
Calculate.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 5)
Blank is forged by middle employing liquid die hammer, and before forging, the die cavity uniform application of closed molds has colloidal graphite mixed with water.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step 6)
In to molding forging use Shot Blasting, clear up forging surface scale.
A kind of GH4169 stator blade closed die forging method the most according to claim 1, it is characterised in that described step
7) use high-temperature electric resistance furnace that forging carries out solution heat treatment, holding temperature 965 ± 10 DEG C, air cooling after being incubated 60 minutes in.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107116174A (en) * | 2017-06-21 | 2017-09-01 | 山东南山铝业股份有限公司 | The processing method and system of fan leaf dish |
| CN108080544A (en) * | 2017-11-23 | 2018-05-29 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of double installing plate stator blade blank manufacturing process of compressor |
| CN110567349A (en) * | 2019-09-22 | 2019-12-13 | 中国航发沈阳发动机研究所 | stator blade rotation angle measuring structure and calibration method |
| CN110695118A (en) * | 2019-11-10 | 2020-01-17 | 中国航发南方工业有限公司 | Method for reducing residual stress of high-speed extrusion forming blade |
| CN110795803A (en) * | 2019-11-10 | 2020-02-14 | 中国航发南方工业有限公司 | Extrusion forming blade |
| CN111496159A (en) * | 2019-12-06 | 2020-08-07 | 陕西宏远航空锻造有限责任公司 | Blank making method of GH2696 alloy small double-crown stator blade |
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| CN110567349A (en) * | 2019-09-22 | 2019-12-13 | 中国航发沈阳发动机研究所 | stator blade rotation angle measuring structure and calibration method |
| CN110695118A (en) * | 2019-11-10 | 2020-01-17 | 中国航发南方工业有限公司 | Method for reducing residual stress of high-speed extrusion forming blade |
| CN110795803A (en) * | 2019-11-10 | 2020-02-14 | 中国航发南方工业有限公司 | Extrusion forming blade |
| CN110695118B (en) * | 2019-11-10 | 2021-04-09 | 中国航发南方工业有限公司 | Method for reducing residual stress of high-speed extrusion forming blade |
| CN110795803B (en) * | 2019-11-10 | 2023-09-29 | 中国航发南方工业有限公司 | Extrusion molding blade |
| CN111496159A (en) * | 2019-12-06 | 2020-08-07 | 陕西宏远航空锻造有限责任公司 | Blank making method of GH2696 alloy small double-crown stator blade |
| CN112605325A (en) * | 2020-11-30 | 2021-04-06 | 贵州航天新力科技有限公司 | Eccentric forging forming process |
| CN114505660A (en) * | 2022-03-15 | 2022-05-17 | 河北同锐机械制造有限公司 | Production process of high-wear-resistance toothed chain wheel |
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| CN106180506B (en) | 2018-04-03 |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO., LTD. Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE CORPORATION PLC |