CN207982196U - A kind of titanium alloy bowl superplastic forming die - Google Patents

A kind of titanium alloy bowl superplastic forming die Download PDF

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Publication number
CN207982196U
CN207982196U CN201721368545.3U CN201721368545U CN207982196U CN 207982196 U CN207982196 U CN 207982196U CN 201721368545 U CN201721368545 U CN 201721368545U CN 207982196 U CN207982196 U CN 207982196U
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China
Prior art keywords
titanium alloy
mold
superplastic forming
forming die
upper mold
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Inventor
雷鹍
谢秀民
刘新芹
靳舜尧
郭青苗
李波
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Beijing Puhui Sanhang Technology Co Ltd
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Beijing Puhui Sanhang Technology Co Ltd
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Abstract

A kind of titanium alloy bowl superplastic forming die, including upper mold and lower mold;The upper mold is plate;The middle part of the lower mold includes the basin shape slot being recessed inwardly, the part that the top surface of the lower mold connects with the top edge of the basin shape slot includes the external extension slot extended, the external margin of the extension slot includes the weld seam bit-avoiding slot for configuring part blank weld seam, further include the circular contour wire casing that positioning is subsequently cut for part and the annular stripping chute convenient for part removal on the extension slot, the extension slot is for configuring part blank;Part blank is plate, and two pieces of part blanks configure up and down, and edge alignment is welded, while air inlet pipe is welded on blank long side edge centre position, and ensure that inlet channel is unimpeded using argon arc welding edge sealing.

Description

A kind of titanium alloy bowl superplastic forming die
Technical field
The utility model is related to a kind of titanium alloy bowl superplastic forming dies.
Background technology
Superplastic forming refers to the method for carrying out excellent suitability for press forming using the superplasticity that certain metals are presented under given conditions. The moulding of metal usually indicates that value is generally less than 40% with elongation percentage.But metal is in superplasticity under given conditions, special Sign is:Elongation percentage can be improved tens and arrive hundred times, reach as high as 2000% or more.
In aerospace field, the superplastic forming method being most widely used is plank gas pressure compacting, is also referred to as blow molded into Shape.Blow molding is that a kind of low energy, low pressure obtain the plate forming technique of aximal deformation value material.By manufacturing and designing particular manufacturing craft, A closed pressure space is formed among mold and plate, after plate is heated to superplastic temperature, under gas effect, base Material generates superplastic deformation, gradually close to die face, and predetermined shape is formed until being bonded completely with mold.Common super modeling Property material mainly has titanium alloy, aluminium alloy, magnesium alloy etc..
Currently, common titanium alloy superplastic forming die, is sealed using the sealing stalk carried on mold, it is real in production In trampling, this sealing means are more demanding to the same plate degree of mold machining accuracy and blank, and die life is low, it is easy to The case where leaking air.For the smaller titanium alloy bowl part of no draft angle or drafting angle, part removal is difficult, uses Sealing obstructs to seal, and due to drip molding insufficient rigidity, part deformation is serious after demoulding, and qualification rate is low.
Utility model content
To overcome prior art problem, the utility model to provide a kind of titanium alloy bowl superplastic forming die.
A kind of titanium alloy bowl superplastic forming die, including upper mold and lower mold;The upper mold is plate;It is described The middle part of lower mold includes the basin shape slot being recessed inwardly, and the top surface of the lower mold connects with the top edge of the basin shape slot Part includes the external extension slot extended, and the external margin of the extension slot includes being kept away for configuring the weld seam of part blank weld seam Position slot, further includes the circular contour wire casing that positioning is subsequently cut for part and the annular convenient for part removal on the extension slot Stripping chute, the extension slot is for configuring part blank;Part blank is plate, and two pieces of part blanks configure up and down, side Edge is aligned, and is welded using argon arc welding edge sealing, while air inlet pipe is welded on blank long side edge centre position, and ensures that air inlet is logical Road is unimpeded.
Preferably, the bottom surface of the basin shape slot includes gas vent.
Preferably, include thermometer hole on the upper mold and lower mold.
Preferably, it there are two the thermometer holes, is arranged respectively on the upper mold and lower mold, and two thermometer holes pair To configuration.
Preferably, the side that the upper mold and lower mold connect includes air inlet pipe air inlet duct.
Preferably, the both sides of the upper surface air inlet pipe air inlet duct of the lower surface of the upper mold and lower mold include being used for The limit stalk that mold clamping and press limit when pressurizeing.
Preferably, two holes for hoist are each equipped on each side of the upper mold and lower mold.
Preferably, the material of the upper mold and lower mold is Ni7N.
The beneficial effects of the utility model:
Titanium alloy bowl superplastic forming die provided by the utility model keeps part de- by configuring annular stripping chute Deform smaller after mould, pad pasting gap is less than 0.5mm, while part blank carries out mold using the double-deck slab argon arc welding soldering and sealing Whole heating is blow molded again, is solved mold machining accuracy and blank existing for titanium alloy bowl superplastic forming die and is wanted with plate degree Ask higher, service life is low, serious problem is deformed after part removal, it is not easy to faulty part, while mould are generated because of gas leakage The service life higher of tool.
Description of the drawings
Fig. 1 is the sectional view of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 2 is the sectional view partial enlarged view of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 3 is the part blank sectional view of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 4 is the part blank front view of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 5 is the structural schematic diagram of the outer surface of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 6 is the vertical view of the lower mold of the titanium alloy bowl superplastic forming die of the utility model;
Fig. 7 is the upward view of the upper mold of the titanium alloy bowl superplastic forming die of the utility model.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings:As shown in Figure 1, Figure 2, a kind of shown in Fig. 3, Fig. 4 and Fig. 5 Titanium alloy bowl superplastic forming die, including upper mold 1 and lower mold 2;
A kind of titanium alloy bowl superplastic forming die, including upper mold 1 and lower mold 2;The upper mold 1 is plate; The middle part of the lower mold 2 includes the basin shape slot 4 being recessed inwardly, the top sides of the top surface of the lower mold 2 and the basin shape slot 4 The part that edge connects includes the external extension slot 5 extended, and the external margin of the extension slot 5 includes for configuring part blank weldering The weld seam bit-avoiding slot 3 of seam, part subsequently cut the circular contour wire casing 14 of positioning and the annular stripping chute 6 convenient for part removal, For the extension slot 5 for configuring part blank, the lower surface corresponding position of wherein upper mold 1 is also configured with weld seam bit-avoiding slot 3.Institute It includes air inlet pipe air inlet duct 10 to state the side that upper mold 1 and lower mold 2 connect, and the utility model is for convenience of practicality, four sides Four tracheae air inlet ducts 10 are configured on face.The two of the upper surface air inlet pipe air inlet duct of the lower surface of the upper mold 1 and lower mold 2 Side includes the limit stalk 15 limited when pressurizeing for mold clamping and press.
Part blank 7 is plate, and two pieces of about 7 part blanks configure, and edge alignment is welded using argon arc welding edge sealing 9 It connects, while air inlet pipe 8 being welded on to the centre position of two blocks of blanks, and ensure that inlet channel is unimpeded;Wherein single blank is thick Degree is 2mm, weld seam 6mm, therefore bead arrangements are in weld seam bit-avoiding slot 3, and blank 7 is configured in itself in extension slot 5;Wherein On lower mold 2, the sequence configured from inside to outside is followed successively by circular contour wire casing 14, annular stripping chute 6 and weld seam bit-avoiding slot 3, from The edge of basin shape slot 4 is to being extension slot 5 for configuring blank between weld seam bit-avoiding slot 3;The upper mold 1 is plate, on The main function of mold 1 is to fasten the lower mold 2 of closing, so that the basin shape slot 4 in lower mold 2 is formed basin shape cavity, after carrying out Continuous blow molding process.
The middle part of the lower mold 2 includes the basin shape slot 4 to recess, and the bottom surface of the basin shape slot 4 includes gas vent 13, row Stomata 13 is used to that air to be discharged when superplastic forming, and specifically it is configured at the bottom cavity fillet of basin shape slot 4, gas vent 13 A diameter of 1mm.
The part that the top surface of the lower mold 2 connects with the top edge of the basin shape slot 4 includes extension slot 5, accordingly The lower surface corresponding position of the upper mold 1 of position also includes extension slot 5;The both sides of the upper mold 1 and lower mold 2 include being used for The limit stalk 15 that mold clamping and press limit when pressurizeing, limit stalk 15 can be ladder-like, or ensure fine and close to fasten different Shape.It include thermometer hole 11 on the upper mold 1 and lower mold 2.There are two the thermometer holes 11, is arranged respectively on described On mold 1 and lower mold 2, and two thermometer holes are oppositely disposed.Thermometer hole 11 in heating of top mold 1 and lower mold 2 for being inserted into Electroheat pair detects the temperature of mold.Two holes for hoist 12 are each equipped on each side of the upper mold 1 and lower mold 2, side Just die closing operation is carried out.Meanwhile the material of the upper mold 1 and lower mold 2 that the utility model uses is Ni7N (ZG3Cr24Ni7N), belong to heat-resistance stainless steel, it is cost-effective, there are higher inoxidizability and elevated temperature strength, temperature in use that can arrive 1050℃。
Part blank 7 is plate, and two pieces of about 7 part blanks are placed, and edge alignment is welded using argon arc welding edge sealing 9, air inlet pipe 8 is welded among two pieces of 7 edges of the part blank.This blank form reduces mold requirement on machining accuracy And the same plate degree requirement of blank, improve die life.
In use, part blank 7 is used into argon arc welding soldering and sealing, while blank edge connects air inlet pipe 8, wherein air inlet pipe 8 Soldering and sealing is carried out after can flattening again, is put into 2 extension slot 5 of lower mold, is molded after upper mold 1 and the alignment of lower 2 four side of mold, it will be hot Galvanic couple is inserted into thermometer hole 11, is warming up to 900 DEG C into stove, forcing press pressurization is inflated by air inlet pipe 8 in blank pocket, under making Layer blank carries out superplastic deformation gradually lower 2 cavity of mold of fitting.It comes out of the stove after mold cooling, upper mold 1 is hung out, crowbar is used The ring stiffener position of light sled drip molding, double swerve slowly demould.
The 2 top surface edge position of lower mold of the utility model is equipped with annular stripping chute 6, and after having shaped, drip molding corresponds to Position can shape ring stiffener, improve the rigidity of drip molding, and when part removal part will not become caused by using crowbar Shape.An annular ring slightly protruded can be formed on the position of circular contour wire casing 14, annular ring is that the maximum of part is outer Profile.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this The various modifications and improvement that the technical solution of utility model is made should all fall into the protection of the utility model claims book determination In range.

Claims (8)

1. a kind of titanium alloy bowl superplastic forming die, it is characterised in that:
Including upper mold and lower mold;
The upper mold is plate;
The middle part of the lower mold includes the basin shape slot being recessed inwardly, the top sides of the top surface of the lower mold and the basin shape slot The part that edge connects includes the extension slot extended outward, and the external margin of the extension slot includes for configuring part blank weldering The weld seam bit-avoiding slot of seam further includes subsequently cutting the circular contour wire casing of positioning for part and being convenient for part on the extension slot The annular stripping chute of demoulding, the extension slot is for configuring part blank;
Part blank is plate, and two pieces of part blanks configure up and down, and edge alignment is welded, simultaneously using argon arc welding edge sealing Air inlet pipe is welded on blank long side edge centre position, and ensures that inlet channel is unimpeded.
2. titanium alloy bowl superplastic forming die according to claim 1, it is characterised in that:The bottom surface of the basin shape slot Including gas vent.
3. titanium alloy bowl superplastic forming die according to claim 1, it is characterised in that:The upper mold and lower die It include thermometer hole on tool.
4. titanium alloy bowl superplastic forming die according to claim 3, it is characterised in that:The thermometer hole has two It is a, it is arranged respectively on the upper mold and lower mold, and two thermometer holes are oppositely disposed.
5. titanium alloy bowl superplastic forming die according to claim 1, it is characterised in that:The upper mold and lower die It includes air inlet pipe air inlet duct to have the side to connect.
6. titanium alloy bowl superplastic forming die according to claim 5, it is characterised in that:The following table of the upper mold The both sides of the upper surface air inlet pipe air inlet duct of face and lower mold include the limit stalk limited when pressurizeing for mold clamping and press.
7. titanium alloy bowl superplastic forming die according to claim 1, it is characterised in that:The upper mold and lower die It is each equipped with two holes for hoist on each side of tool.
8. titanium alloy bowl superplastic forming die according to claim 1, it is characterised in that:The upper mold and lower die The material of tool is Ni7N.
CN201721368545.3U 2017-10-23 2017-10-23 A kind of titanium alloy bowl superplastic forming die Active CN207982196U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721368545.3U CN207982196U (en) 2017-10-23 2017-10-23 A kind of titanium alloy bowl superplastic forming die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721368545.3U CN207982196U (en) 2017-10-23 2017-10-23 A kind of titanium alloy bowl superplastic forming die

Publications (1)

Publication Number Publication Date
CN207982196U true CN207982196U (en) 2018-10-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109604409A (en) * 2018-11-06 2019-04-12 北京航星机器制造有限公司 Aluminium alloy abnormity sheet metal component preparation method and processing mold for rail traffic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109604409A (en) * 2018-11-06 2019-04-12 北京航星机器制造有限公司 Aluminium alloy abnormity sheet metal component preparation method and processing mold for rail traffic
CN109604409B (en) * 2018-11-06 2022-07-12 北京航星机器制造有限公司 Preparation method and processing die of aluminum alloy special-shaped sheet metal part for rail transit

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