CN106270093A - A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device - Google Patents
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device Download PDFInfo
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- CN106270093A CN106270093A CN201610815107.0A CN201610815107A CN106270093A CN 106270093 A CN106270093 A CN 106270093A CN 201610815107 A CN201610815107 A CN 201610815107A CN 106270093 A CN106270093 A CN 106270093A
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- cylinder base
- hollow blade
- viscoelastroplasticity
- manufacturing process
- intrinsic pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device, to solve the hollow blade of existing method processing, the problem that complex technical process, dimensional accuracy are low, wall thickness reduction is serious, evenness of wall thickness is poor.Method: one, cylinder base processed；Two, during cylinder base loads sealing device；Three, sealing device loads on forcing press and aligns with upper die and lower die；Four, viscoelastoplastic material is injected；Five, matched moulds shapes；Six, opening mold, obtains formation of parts；Seven, excision addendum, obtains hollow blade finished product.Device: fixed frame is four framework frameworks, the framework that on fixed frame, any two is relative is provided with shoulder hole, each shoulder hole is followed successively by overflow valve installing hole and cylinder base installing hole from outside to inside, two shoulder holes are symmetrical arranged relative to cylinder base, each overflow valve installing hole is provided with an overflow valve, upper die and lower die are separately positioned on the upper and lower side of a base, are provided with Guan Bi die cavity between upper mold and lower mold.The present invention is used for making hollow blade.
Description
Technical field
The present invention relates to a kind of intrinsic pressure manufacturing process of soft mode and forming device, be specifically related to a kind of hollow blade viscoelastroplasticity
The intrinsic pressure manufacturing process of soft mode and forming device, belong to hollow object forming technique field.
Background technology
Blade is the kernel component within aero-engine, under conditions of it is operated in High Temperature And Velocity combustion gas impact,
In order to reduce the temperature that blade material is born, being generally made by blade hollow, internal blowing air cools down.Size essence
Degree, surface quality and evenness of wall thickness are the of paramount importance attributes of hollow blade.The shaping that this type of hollow blade uses at present
Method mainly cast form, the method filling out wax moulding and point lobe punching press then butt welding.Cast form needs through complexity
Machining and electric machining process, finally polishing forms, and processing technique is complicated and blank dimension changes greatly, especially metallurgical quality
Control difficulty；Fill out wax moulding to be filled in a base by paraffin, at room temperature shape, be solid-state at normal temperatures due to paraffin, flowing
Property bad, blank patch mould precision low, reduction is higher, and quality control is poor；Dividing lobe punching press then butt welding, dimensional accuracy is by each
The impact of operation, quality control difficulties, and also the existence of weld seam has had a strong impact on quality and the performance of part.
Summary of the invention
The present invention solves the hollow blade that existing method is processed, complex technical process, dimensional accuracy are low, wall thickness reduction is tight
The problem of weight, evenness of wall thickness difference, and a kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device are proposed.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode of the present invention, described manufacturing process is by following step
Rapid realization:
Step one, cylinder base processed: circular cylinder base is made in Metal Sheet in Curling welding, the canned paragraph at circular cylinder base two ends is processed into
Diameter, more than blade section in the middle of cylinder base, is changeover portion between blade section and canned paragraph；
Step 2, cylinder base load sealing device: being loaded in sealing device by cylinder base, folding base is fixedly clamped；
Step 3, sealing device load forcing press: be installed on forcing press by the sealing device being provided with a base, and with upper
Mould and lower mold align, position；
Step 4, injection viscoelastoplastic material: in cylinder base, inject viscoelastoplastic material, simultaneously by overflow valve to cylinder base
Internal pressurising, makes a base be internally formed certain intrinsic pressure, and the states of matter of viscoelastoplastic material is semisolid；
Step 5, matched moulds shape: start forcing press, and forcing press drives upper mold descending with the speed of 0.005m/s, and to cylinder
Base and its viscous elastic-plastic material entirety load, until upper mold closes with lower mold, cylinder base viscoelastoplastic material pressure and
Under the effect of upper die and lower die, fit with the die cavity of upper die and lower die and shape；
Step 6, opening mold: removal formation of parts is intrinsic pressure, forcing press drives upper mold up, by formation of parts from sealing
Device takes out, the viscoelastoplastic material within cleaning, obtain formation of parts；
Step 7, excision addendum: the process portion at formation of parts two ends is excised, obtains hollow blade
Product.
A kind of hollow blade intrinsic pressure forming device of viscoelastroplasticity soft mode of the present invention, described forming device includes sealing dress
Put, upper die and lower die, sealing device includes fixed frame and two overflow valves, and fixed frame is four framework frameworks, fixed frame
The relative framework of upper any two is provided with shoulder hole, and each shoulder hole is followed successively by overflow valve installing hole and cylinder base peace from outside to inside
Dress hole, two shoulder holes are symmetrical arranged relative to cylinder base, and each overflow valve installing hole is provided with an overflow valve, upper die and lower die
It is separately positioned on the upper and lower side of a base, between upper mold and lower mold, is provided with Guan Bi die cavity.
The present invention compared with prior art has the advantages that
One, the present invention uses viscoelastroplasticity flexible die forming method, at room temperature shapes, by viscoelastoplastic material as interior
Portion's Supporting Media, owing to viscoelastoplastic material is semisolid medium, under high pressure good fluidity, easily seal, easily at cylinder base
High pressure is set up in inside.Viscoelastroplasticity soft mode material has stronger sensitivity of strain rate, can set up on cylinder base surface non-all
Even pressure field, is adapted to a change for base deformation process stress, and the adhesive attachment at viscosity soft mode material and cylinder base interface
Stress can promote that a base material, to deformation large area flowing, improves the uniformity of formation of parts Thickness Distribution, it is to avoid office
Portion's region transitions is thinning, it is ensured that hollow blade forming quality.
Two, the manufacturing process forming process of the present invention is simple, and desirable pressure is less, less demanding to former, needs
The parameter controlled is few, and forming dimension precision is high, evenness of wall thickness is good.The present invention is substantially reduced thin-walled hollow blade and shapes thinning
Rate, maximum reduction controls below 5%.
Accompanying drawing explanation
Fig. 1 be detailed description of the invention one step one in the structural front view of cylinder base 1；
Fig. 2 is the sectional view that hollow blade installs to sealing device 2；
Fig. 3 is the mould structure sectional view of hollow blade viscoelastroplasticity flexible die forming original state；
Fig. 4 is the mould structure sectional view of hollow blade viscoelastroplasticity flexible die forming intermediateness；
Fig. 5 is the structure sectional view of hollow blade viscoelastroplasticity flexible die forming mold closed condition.
Detailed description of the invention
Detailed description of the invention one: combine Fig. 1～Fig. 5 and present embodiment is described, present embodiment is through the following steps that reality
Existing:
Step one, cylinder base 1 processed: circular cylinder base is made in Metal Sheet in Curling welding, the canned paragraph 1-2 at circular cylinder base two ends is added
Work becomes diameter to be more than blade section 1-1 in the middle of a base, is changeover portion 1-3, sees Fig. 1 between blade section 1-1 and canned paragraph 1-2；
Step 2, cylinder base 1 load sealing device 2: being loaded by cylinder base 1 in sealing device 2, folding base 1 is fixedly clamped；
Step 3, sealing device 2 load forcing press: be installed on forcing press by the sealing device 2 being provided with a base 1, and
Align with upper mold 4 and lower mold 5, location；
Step 4, injection viscoelastoplastic material 3: in cylinder base 1, inject viscoelastoplastic material 3, simultaneously by overflow valve 2-2
To the internal pressurising of cylinder base 1, making a base 1 be internally formed certain intrinsic pressure, the states of matter of viscoelastoplastic material 3 is semisolid；
Step 5, matched moulds shape: start forcing press, and forcing press drives upper mold 4 descending with the speed of 0.005m/s, and to cylinder
Base 1 and the overall loading of its viscous elastic-plastic material 3, until upper mold 4 closes with lower mold 5, cylinder base 1 is at viscoelastoplastic material 3
Pressure and upper mold 4, lower mold 5 effect under, fit with the die cavity of upper mold 4, lower mold 5 and shape, see Fig. 5；
Step 6, opening mold: removal formation of parts is intrinsic pressure, forcing press drives upper mold 4 up, by formation of parts from sealing
Device 2 takes out, the viscoelastoplastic material 3 within cleaning, obtain formation of parts 6；
Step 7, excision addendum: by process portion (i.e. canned paragraph 1-2 and the changeover portion at formation of parts 6 two ends
1-3) excision, obtains hollow blade finished product.
Detailed description of the invention two: combine Fig. 1 and present embodiment is described, present embodiment is the wall of the cylinder base 1 in step one
Thickness is 0.15mm～1mm.Other step is identical with detailed description of the invention one.
Detailed description of the invention three: combine Fig. 1 and present embodiment is described, present embodiment is the material of the cylinder base 1 in step one
Matter is rustless steel, titanium alloy or high temperature alloy.Other step is identical with detailed description of the invention one or two.
Detailed description of the invention four: combine Fig. 1 and present embodiment is described, present embodiment is cylinder base 1 length in step one
Scope is 10mm～500mm, a length of L of blade section 1-1, a length of M of a length of S, changeover portion 1-3 of fixing end 1-2, mistake
Crossing angle is φ, and the diameter of cylinder base 1 calculates according to the principle with the girth such as formed hollow blade profile.Other step be embodied as
Mode three is identical.
Detailed description of the invention five: combine Fig. 1 and present embodiment is described, present embodiment is cylinder base 1 length in step one
Scope is 300mm.Other step is identical with detailed description of the invention four.
Detailed description of the invention six: combine Fig. 3 and present embodiment is described, present embodiment is internal to cylinder base 1 in step 4
Pressurising, its pressure is 1MPa～3MPa.Other step is identical with detailed description of the invention four or five.
Detailed description of the invention seven: combine Fig. 3 and present embodiment is described, present embodiment is internal to cylinder base 1 in step 4
Pressurising, its pressure is 2MPa.Other step is identical with detailed description of the invention six.
Detailed description of the invention eight: combine Fig. 3 and present embodiment is described, present embodiment is the viscoelastroplasticity material in step 4
The molecular weight of material 3 be 400000g/mol～600000g/mol, viscosity be 10000Pa s～the polyphosphazene polymer of 16000Pa s
Laminate material.Other step is identical with detailed description of the invention six or seven.
Detailed description of the invention nine: combine Fig. 3 and present embodiment is described, present embodiment is the viscoelastroplasticity material in step 4
The molecular weight of material 3 be 500000g/mol, viscosity be 12000Pa s.Other step is identical with detailed description of the invention eight.
Detailed description of the invention ten: combine Fig. 5 and present embodiment is described, present embodiment is in step 7 in step 4
Hollow blade Breadth Maximum T is 10mm～300mm.Other step is identical with detailed description of the invention eight.
Detailed description of the invention 11: combine Fig. 5 and present embodiment is described, present embodiment is in step 7 in step 4
Hollow blade Breadth Maximum T be 150mm.Other step is identical with detailed description of the invention ten.
Detailed description of the invention 12: combine Fig. 2 and present embodiment is described, present embodiment is glued for implementing a kind of hollow blade
The forming device that the intrinsic pressure manufacturing process of elastoplasticity soft mode is used, this forming device includes sealing device 2, upper mold 4 and lower mold 5,
Sealing device 2 includes fixed frame 2-1 and two overflow valve 2-2, and fixed frame 2-1 is four framework frameworks, on fixed frame 2-1
The relative framework of any two is provided with shoulder hole, and each shoulder hole is followed successively by overflow valve installing hole 2-1-1 and cylinder from outside to inside
Base installing hole 2-1-2, two shoulder holes are symmetrical arranged relative to cylinder base 1, and each overflow valve installing hole 2-1-1 is provided with one and overflows
Stream valve 2-2, upper mold 4 and lower mold 5 are separately positioned on the upper and lower side of a base 1, are provided with Guan Bi die cavity 7 between upper mold 4 and lower mold 5.Close
Seal apparatus 2 is used for making a base 1 be formed and closes inner chamber, and when the mold is closed, cylinder base 1 is fitted with die cavity 6；Overflow valve 2-2 connects leaf
Sheet cavity inside is with outside, and when internal pressure exceedes definite value, overflow valve 2-2 opens, blade cavity viscous elastic-plastic medium
It is expelled to outside blade cavity by overflow valve 2-2；Blade cavity internal pressure is controlled by outer connected control system, control system
Control cavity inside pressure in allowed band.
Claims (10)
1. the hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode, it is characterised in that: described manufacturing process is by following
Step realizes:
Step one, cylinder base processed (1): circular cylinder base is made in Metal Sheet in Curling welding, the canned paragraph (1-2) at circular cylinder base two ends is added
Work becomes diameter to be more than blade section (1-1) in the middle of a base, is changeover portion (1-3) between blade section (1-1) and canned paragraph (1-2)；
Step 2, cylinder base (1) load sealing device (2): loaded by cylinder base (1) in sealing device (2), and folding base (1) clamping is solid
Fixed；
Step 3, sealing device (2) load forcing press: be installed on forcing press by the sealing device (2) being provided with a base (1),
And align with upper mold (4) and lower mold (5), position；
Step 4, injection viscoelastoplastic material (3): in cylinder base (1), inject viscoelastoplastic material (3), pass through overflow valve simultaneously
(2-2) to the internal pressurising of cylinder base (1), making a base (1) be internally formed certain intrinsic pressure, the states of matter of viscoelastoplastic material (3) is half
Solid-state；
Step 5, matched moulds shape: start forcing press, and forcing press drives upper mold (4) descending with the speed of 0.005m/s, and to cylinder base
(1) loading with its viscous elastic-plastic material (3) entirety, until upper mold (4) closes with lower mold (5), cylinder base (1) is in viscoelastroplasticity
The pressure of material (3) and upper mold (4), lower mold (5) effect under, fit with the die cavity of upper mold (4), lower mold (5) and shape；
Step 6, opening mold: removal formation of parts is intrinsic pressure, forcing press drives upper mold (4) up, by formation of parts from sealing dress
Put in (2) and take out, the viscoelastoplastic material (3) within cleaning, obtain formation of parts (6)；
Step 7, excision addendum: the process portion at formation of parts (6) two ends is excised, obtains hollow blade finished product.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 1, it is characterised in that: described
The wall thickness of the cylinder base (1) in step one is 0.15mm～1mm.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 1 and 2, it is characterised in that:
The material of the cylinder base (1) in described step one is rustless steel, titanium alloy or high temperature alloy.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 3, it is characterised in that: described
Cylinder base (1) length range in step one is 10mm～500mm, a length of L of blade section (1-1), the length of fixing end (1-2)
For S, a length of M of changeover portion (1-3), transition angle is φ.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 4, it is characterised in that: described
Cylinder base (1) length range in step one is 300mm.
6. according to a kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode described in claim 4 or 5, it is characterised in that:
To the internal pressurising of cylinder base (1) in described step 4, its pressure is 1MPa～3MPa.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 6, it is characterised in that: described
To the internal pressurising of cylinder base (1) in step 4, its pressure is 2MPa.
8. according to a kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode described in claim 6 or 7, it is characterised in that:
The molecular weight of the viscoelastoplastic material (3) in described step 4 is that 400000g/mol～600000g/mol, viscosity are
10000Pa s～the macromolecule polymer material of 16000Pa s.
A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode the most according to claim 8, it is characterised in that: described
Hollow blade Breadth Maximum T in step 7 is 10mm～300mm.
10. implementing a forming device for a kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode of claim 1, it is special
Levying and be: described forming device includes sealing device (2), upper mold (4) and lower mold (5), sealing device (2) includes fixed frame
(2-1) He two overflow valves (2-2), fixed frame (2-1) is four framework frameworks, and the upper any two of fixed frame (2-1) is relative
Framework be provided with shoulder hole, each shoulder hole is followed successively by overflow valve installing hole (2-1-1) and cylinder base installing hole (2-from outside to inside
1-2), two shoulder holes are symmetrical arranged relative to cylinder base (1), and each overflow valve installing hole (2-1-1) is provided with an overflow valve
(2-2), upper mold (4) and lower mold (5) are separately positioned on the upper and lower side of a base (1), are provided with Guan Bi between upper mold (4) and lower mold (5)
Die cavity (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610815107.0A CN106270093B (en) | 2016-09-09 | 2016-09-09 | A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device |
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| CN201610815107.0A CN106270093B (en) | 2016-09-09 | 2016-09-09 | A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759493A (en) * | 2019-02-03 | 2019-05-17 | 哈尔滨工业大学 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
| CN111112431A (en) * | 2019-12-20 | 2020-05-08 | 中国航发南方工业有限公司 | Method for liquid-filled extrusion forming and blade obtained thereby |
| CN111673397A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Forming process of wide chord hollow blade |
| CN112045025A (en) * | 2020-06-30 | 2020-12-08 | 中国航发南方工业有限公司 | Hydraulic bulging processing die and hydraulic bulging processing method for flange type casing outer cover |
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| WO2016090405A1 (en) * | 2014-12-08 | 2016-06-16 | Peter John Murdoch | A method of forming a fibre metal composite component |
| CN106216479A (en) * | 2014-04-22 | 2016-12-14 | 李明 | A kind of manufacturing process of hollow unit |
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| CN101885018A (en) * | 2010-07-27 | 2010-11-17 | 哈尔滨工业大学 | Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109759493A (en) * | 2019-02-03 | 2019-05-17 | 哈尔滨工业大学 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
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| CN111112431A (en) * | 2019-12-20 | 2020-05-08 | 中国航发南方工业有限公司 | Method for liquid-filled extrusion forming and blade obtained thereby |
| CN111673397A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Forming process of wide chord hollow blade |
| CN111673397B (en) * | 2020-04-30 | 2022-01-04 | 中国航发南方工业有限公司 | Forming process of wide chord hollow blade |
| CN112045025A (en) * | 2020-06-30 | 2020-12-08 | 中国航发南方工业有限公司 | Hydraulic bulging processing die and hydraulic bulging processing method for flange type casing outer cover |
| CN112045025B (en) * | 2020-06-30 | 2022-09-16 | 中国航发南方工业有限公司 | Hydraulic bulging processing die and hydraulic bulging processing method for flange type casing outer cover |
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