CN105344902B - It is segmented the method that T font high-fineness ratio aluminum alloy forge pieces are forged in thermoforming - Google Patents
It is segmented the method that T font high-fineness ratio aluminum alloy forge pieces are forged in thermoforming Download PDFInfo
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- CN105344902B CN105344902B CN201510955543.3A CN201510955543A CN105344902B CN 105344902 B CN105344902 B CN 105344902B CN 201510955543 A CN201510955543 A CN 201510955543A CN 105344902 B CN105344902 B CN 105344902B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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Abstract
The invention discloses one kind reduction T font high-fineness ratio aluminum alloy forge pieces forging equipment requirement, forging production cost is reduced, the method that T font high-fineness ratio aluminum alloy forge pieces are forged in the segmentation thermoforming of forging production efficiency is improved.The method comprising the steps of：A, installation mold；B, reduced overall shaping；C, first time subsection deformation；D, second of subsection deformation；After E, second of subsection deformation, template is removed, then overall closed-die forging shaping.T font high-fineness ratio aluminum alloy forge piece forging equipment requirements can be reduced using this method, abundant equipment can produce the type of product；Forging production cost is reduced, forging production efficiency is improved.
Description
Technical field
It is especially a kind of to be molded by a fire the present invention relates to metal material scientific and engineering field, the side of substep forging
Formula realizes the net projected area 4m of super large-scale2The method of above T font high-fineness ratio aluminum alloy forge pieces.
Background technology
It is known：Aluminium alloy has density small, and specific strength is high, good fatigue strength and the advantages of stress corrosion resistant, therefore
The fields such as Aeronautics and Astronautics, communications and transportation, ship, energy source and power, petrochemical industry are widely used.For net projected area 4m2More than
For ultra-large type aluminum alloy forge piece, because transmission of heat by contact causes between the reduction of forging stock temperature, blank and mould in forming process
The presence of the factors such as friction, exacerbates requirement of the fiery solid forging shaping to equipment, makes this kind of ultra-large type aluminum alloy forge piece whole
Body formed difficulty is larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of reduction T font high-fineness ratio aluminum alloy forge piece forging equipments
It is required that, forging production cost is reduced, the segmentation thermoforming forging T font high-fineness ratio aluminum alloy forge pieces of forging production efficiency are improved
Method.
The technical solution adopted for the present invention to solve the technical problems is：It is segmented thermoforming forging T font high-fineness ratio aluminium
The method of alloy forged piece, comprises the following steps：
A, installation mold；The mould includes upper die and lower die；The lower mould has the die cavity of rib；
After the completion of B, mould installion, slab is put into progress reduced overall shaping in mold cavity；
After the completion of C, reduced overall, mould is lifted, one piece of template is placed at the two ends directly over slab respectively；The template
Upper surface matched with the die cavity of upper mould, the lower surface of the template is matched with the design shape of forging；And template is along slab
On placed longitudinally slab, longitudinally covered slab；
Then upper mould carries out first time subsection deformation with lower mould matched moulds, is depressed into desired value；The desired value refers to that technique is set
Fixed drafts；
After D, first time subsection deformation, lift mould and move the template at slab two ends to centre position so that template
10%~15% is overlapped with first time segmentation impression；Then upper mould carries out second of subsection deformation with lower mould matched moulds, is depressed into target
Value；The desired value refers to the drafts of technique initialization；
After E, second of subsection deformation, template is removed, then overall closed-die forging shaping.
Further, in step C, the template is provided at both ends with hole for hoist；And the template two ends extend depanning
Tool；In step D, it is provided with hanging column on the upper mould two sides；And after first time subsection deformation, lift mould with
Before, the hanging column by suspension strop by the two ends of template respectively with upper mould both sides is connected；The hanging column is located at template second
The surface of subsection deformation installation site.
It is preferred that, template is placed on the two ends of slab upper surface by clamping machine in step C.
Further, in step C, the template is preheated, is baked to 250 DEG C~300 for one hour before forging starts
℃。
Further, install in stepb after mould, the spray oil base graphite lubrication in the die cavity of upper die and lower die
Agent.
The beneficial effects of the invention are as follows：Segmentation thermoforming forging T font high-fineness ratio aluminum alloy forge pieces of the present invention
Method, reduced overall, the compression of first time transversal sectional, the compression of second transversal sectional, reduced overall；Realize a fire of forging
Shaping, substep is forged.So as to reduce T font high-fineness ratio aluminum alloy forge piece forging equipment requirements, abundant equipment can produce production
The type of product；Forging production cost is reduced, forging production efficiency is improved.
Brief description of the drawings
Fig. 1 is aluminium alloy high-fineness ratio arc rib opening forging sketch in the embodiment of the present invention；
Fig. 2 is the sectional view of aluminium alloy high-fineness ratio arc rib opening forging in the embodiment of the present invention；
Fig. 3 is the top view of template in the embodiment of the present invention；
Fig. 4 is the front view of first time reduced overall deformation in the embodiment of the present invention；
Fig. 5 is the side view of first time reduced overall deformation in the embodiment of the present invention；
Fig. 6 is the front view after first time subsection deformation installation form in the embodiment of the present invention；
Fig. 7 is the side view after first time subsection deformation installation form in the embodiment of the present invention；
Fig. 8 is the front view after first time subsection deformation matched moulds in the embodiment of the present invention；
Fig. 9 is the side view after first time subsection deformation matched moulds in the embodiment of the present invention；
Figure 10 is the front view after being molded after first time subsection deformation in the embodiment of the present invention；
Figure 11 is the side view after being molded after first time subsection deformation in the embodiment of the present invention；
Figure 12 is the close-up schematic view of A in Figure 10；
Indicated in figure：Mould under 1- slabs, the upper moulds of 2-, 3-, 4- templates, 5- suspension strops, 6- hanging columns.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
The method that T font high-fineness ratio aluminum alloy forge pieces are forged in segmentation thermoforming of the present invention, comprises the following steps：
A, installation mold；The mould includes upper mould 2 and lower mould 3；The lower mould 3 has the die cavity of rib；
After the completion of B, mould installion, slab 1 is put into progress reduced overall shaping in mold cavity；
After the completion of C, reduced overall, mould 2 is lifted, one piece of template 4 is placed at the two ends directly over slab 1 respectively；It is described
The upper surface of template 4 is matched with the die cavity of upper mould 2, and the lower surface of the template 4 is matched with the design shape of forging；And template 4
Along along the placed longitudinally slab 1 of slab 1, longitudinally covered slab 1；
Then upper mould 2 carries out first time subsection deformation with the lower matched moulds of mould 3, is depressed into desired value；The desired value refers to technique
The drafts of setting；
After D, first time subsection deformation, lift mould 2 and move the template 4 at the two ends of slab 1 to centre position so that mould
Plate 4 overlaps 10%~20% with first time segmentation impression；Then upper mould 2 carries out second of subsection deformation with the lower matched moulds of mould 3, is depressed into
Desired value；The desired value refers to the drafts of technique initialization；
After E, second of subsection deformation, template 4 is removed, then overall closed-die forging shaping.
Installation mold in step, wherein mould include upper mould 2 and lower mould 3；The lower mould 3 has the die cavity of rib；Will
The mould of die cavity with rib is set to lower mould 3；Consequently facilitating slab 1 realizes that sectional compression is molded, standard is done for forging and stamping forging
It is standby.
In stepb, slab 1 is put into progress reduced overall shaping in mold cavity；It is molded and is caused by reduced overall
The original shape of the formation forging design size of slab 1.
In step C, after the completion of reduced overall, mould 2 is lifted, one piece of mould is placed at the two ends directly over slab 1 respectively
Plate 4；The upper surface of the template 4 is matched with the die cavity of upper mould 2, and the lower surface of the template 4 is matched with the design shape of forging；
And template 4 is along along the placed longitudinally slab 1 of slab 1, longitudinally covered slab 1；
Then upper mould 2 carries out first time subsection deformation with the lower matched moulds of mould 3；It is depressed into desired value；The desired value refers to technique
The drafts of setting.The desired value sets corresponding desired value according to the aluminum alloy forge piece of production different model.The target
Value is voluntarily formulated according to the aluminum alloy forge piece of each manufacturer production different model.
The width of the template 4 is less than the 1/4 of the length of slab 1；In order to avoid template 4 is too wide, so as to have influence on slab 1
Transversal sectional compression quality；Typically require that the width of the template 4 is less than the 1/4 of slab length.
By above-mentioned technological operation, due to placing template at the two ends of slab 1, mould is only to slab during matched moulds
1 two ends are forged, therefore realize that the deformation at the two ends of slab 1 meets the technique chi of design requirement under the effect of less pressure
It is very little.Pass through first time subsection deformation so that the two ends of slab 1 reach the radian of design requirement.
In step D after first time subsection deformation, lift mould 2 and move the template 4 at the two ends of slab 1 to centre position
It is dynamic so that template 4 overlaps 10%~20% with first time segmentation impression；Then upper mould 2 carries out second of segmentation with the lower matched moulds of mould 3
Deformation, is depressed into desired value；The desired value refers to the drafts of technique initialization；
In above-mentioned steps, by the way that template 4 is moved to the centre position of slab 1, during matched moulds, mould is only to plate
Position between the two ends and centre position of base 1 is forged, therefore realizes the two ends of slab 1 with the effect of less pressure
Between between position the deformation at position meet the process of design requirement.Pass through second of subsection deformation so that the two ends of slab 1
Position between therewith between position reaches the radian of design requirement.
In step E, after second of subsection deformation, template 4 is removed, then overall closed-die forging shaping.Due in step C
All forged with step D so that other positions of slab 1 in addition to centre position, overall matched moulds again is passed through in step E
Forging molding, realizes the forging to the centre position of slab 1, while other positions of slab 1 in addition to centre position are modified,
So that forging meets the processing technology size of design.
In summary, the method that T font high-fineness ratio aluminum alloy forge pieces are forged in segmentation thermoforming of the present invention, it is overall
Compression, the compression of first time transversal sectional, second transversal sectional compression, reduced overall；A fire shaping of forging is realized, substep is forged
Make.Due to substep forge, in every time forging required for pressure it is smaller so that reduce T font high-fineness ratios aluminium alloy forging
Part forging equipment requirement, abundant equipment can produce the type of product；Forging production cost is reduced, forging production efficiency is improved.
For the ease of the position adjustments of template 4, further, in step C, the template 4 is provided at both ends with hole for hoist；
And mould is extended at the two ends of template 4；
In step D, it is provided with hanging column 6 on the two sides of upper mould 2；And after first time subsection deformation, lift
Rise before upper mould 2, the hanging column 6 by suspension strop 5 by the two ends of template 4 respectively with the upper both sides of mould 2 is connected；The hanging column 6
Positioned at the surface of second of the subsection deformation installation site of template 4.
Because the hanging column 6 by suspension strop 5 by the two ends of template 4 respectively with the upper both sides of mould 2 is connected；Therefore with upper
Mould 2 is up, and suspension strop 5 lifts template 4, and template 4 is in the presence of gravity and suspension strop 5 from the two ends of slab 1 into slab 1
Portion is moved, and is partly overlapped with segmentation impression first, so as to realize the position adjustments of template 4.
In order to improve operating efficiency, staff's working strength is reduced, further, will by clamping machine in step C
Template 4 is placed on the two ends of the upper surface of slab 1.
In step C, the template 4 is preheated, is baked to 250 DEG C~300 DEG C for one hour before forging starts.Forged
Template 4 and the transmission of heat by contact of slab 1 in journey, template 4 preheats, toasts and makes its temperature between 250 DEG C~300 DEG C, can keep away the table of slab 1
Face temperature drop is too fast and produces chill tissue, reduces the possibility of face checking, while forging tonnage can be reduced.
During being deformed in slab 1, the frictional force between mold cavity and slab 1, the deformation to slab 1
Impact, reduce the frictional force between mold cavity and slab 1；Further, install in stepb after mould, upper
Spray oil base graphitic lubricant in the die cavity of mould 1 and lower mould 2.
Embodiment
The appearance profile of forging is 5600 × 740 × 150mm in this example, and wherein web thickness is 92mm, rib thickness
For 58mm, rib width is 60mm, and rib concave round angle radius is 20mm, and forging radian is R18987mm, the net projected area of forging
For 4.08m2.As shown in Figure 1.
By numerical simulation calculation determine forging shaping required for forging stock be slab 1, specification be 5600 × 720 ×
120mm。
Forging process is divided into four steps：Reduced overall；First time sectional compression；Second of sectional compression；It is last overall
Compression.Specific implementation step is as follows：
1st, reduced overall pattern tool realizes that mold material is 5CrNiMo, die forging 6900 × 1500 × 650mm of specification, quantity
2 pieces.During mold design, lower mould will be placed on rib one, smooth circular arc is placed in mould.
2nd, sectional compression is realized by frock, template 4 material 5CrNiMo, 1800 × 1000 × 50mm of specification, above and below
Curved, radian is R18987mm, and arc surface both sides are each to make a call to two holes for hoist for being used to connect suspension strop, such as 2 pieces of quantity, Fig. 3
It is shown.
3rd, the front mold of forging is fully warmed-up, and preheating temperature is 350~400 DEG C, mold cavity spray oil base graphite
Lubricant.Frock is preheated in forging previous hour.
4th, first time reduced overall；7050 aluminium alloy rectangle slabs are put into mold cavity and carry out global formation, such as Fig. 4
With shown in Fig. 5.
5th, first time sectional compression；2 pieces of templates 4 are individually positioned in two terminations directly over forging after reduced overall, closed
Mould, drafts 10mm, as shown in Figure 6 and Figure 7.
6th, second of sectional compression；After first time sectional compression, on the hanging column 6 that suspension strop 5 is hung over to upper mould 2, such as scheme
Shown in 10, as upper mould 2 is up, template 4 is mobile from the two ends of slab 1 to the middle part of slab 1, with segmentation impression overlapping region first
100mm, matched moulds, drafts is 10mm.As shown in Fig. 8 to Figure 12.
7th, last reduced overall；After second of sectional compression, two pieces of templates 4 are removed, then overall matched moulds.
Claims (4)
1. it is segmented the method that T font high-fineness ratio aluminum alloy forge pieces are forged in thermoforming, it is characterised in that comprise the following steps：
A, installation mold；The mould includes upper mould (2) and lower mould (3)；The lower mould (3) has the die cavity of rib；
After the completion of B, mould installion, slab (1) is put into mold cavity and carries out reduced overall shaping；
After the completion of C, reduced overall, mould (2) is lifted, one piece of template (4) is placed at the two ends directly over slab (1) respectively；Institute
The upper surface for stating template (4) is matched with the die cavity of upper mould (2), and the lower surface of the template (4) is matched with the design shape of forging；
And template (4) is along the placed longitudinally on slab (1) of slab (1), longitudinally covered slab (1)；The template (4) is provided at both ends with
Hole for hoist；And mould is extended at template (4) two ends；
Then upper mould (2) carries out first time subsection deformation with lower mould (3) matched moulds, is depressed into desired value；The desired value refers to technique
The drafts of setting；
After D, first time subsection deformation, lift mould (2) and move the template (4) at slab (1) two ends to centre position so that
Template (4) overlaps 10%~20% with first time segmentation impression；Then upper mould (2) carries out second of segmentation with lower mould (3) matched moulds
Deformation, is depressed into desired value；The desired value refers to the drafts of technique initialization；It is provided with upper mould (2) two sides outstanding
Hanging column (6)；And after first time subsection deformation, lifted mould (2) in the past, the two ends of template (4) are divided by suspension strop (5)
Hanging column (6) not with upper mould (2) both sides is connected；The hanging column (6) is located at second of the subsection deformation installation site of template (4)
Surface；
After E, second of subsection deformation, template (4) is removed, then overall closed-die forging shaping.
2. the method that T font high-fineness ratio aluminum alloy forge pieces are forged in segmentation thermoforming as claimed in claim 1, its feature exists
In：Template (4) is placed on the two ends of slab (1) upper surface by clamping machine in step C.
3. the method that T font high-fineness ratio aluminum alloy forge pieces are forged in segmentation thermoforming as claimed in claim 1, its feature exists
In：In step C, the template (4) is preheated, is baked to 250 DEG C~300 DEG C for one hour before forging starts.
4. the method that T font high-fineness ratio aluminum alloy forge pieces are forged in segmentation thermoforming as claimed in claim 1, its feature exists
In：Install in stepb after mould, the spray oil base graphitic lubricant in the die cavity of upper die and lower die.
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| CN201510955543.3A CN105344902B (en) | 2015-12-17 | 2015-12-17 | It is segmented the method that T font high-fineness ratio aluminum alloy forge pieces are forged in thermoforming |
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| CN105344902B true CN105344902B (en) | 2017-08-25 |
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