CN104014999B - A kind of aluminum alloy outer cover stretch forming method - Google Patents
A kind of aluminum alloy outer cover stretch forming method Download PDFInfo
- Publication number
- CN104014999B CN104014999B CN201410258656.3A CN201410258656A CN104014999B CN 104014999 B CN104014999 B CN 104014999B CN 201410258656 A CN201410258656 A CN 201410258656A CN 104014999 B CN104014999 B CN 104014999B
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- China
- Prior art keywords
- plate
- jaw
- surplus
- woollen
- forming
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000989 Alclad Inorganic materials 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 210000000744 eyelid Anatomy 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000010210 aluminium Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/01—Aircraft parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/26—Construction, shape, or attachment of separate skins, e.g. panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention relates to a kind of aluminum alloy outer cover stretch forming method.To solve waste of material problem, the technical scheme is that two blocks of jaw surplus plates of preparation；The interface of jaw surplus plate and covering forming woollen plate is cleaned out, removes surface alclad layer, then clean with acetone；Jaw surplus plate and covering forming woollen plate are fixed on clamping table；Use agitating friction to weld, make covering forming woollen plate both sides respectively weld one block of jaw surplus plate, obtain prestretched part；Prestretched part is placed on skin drawing machine and carries out drawing and forming, after molding, the jaw surplus plate of both sides is excised along weld seam.The present invention can improve the utilization rate of material, reduces enterprise's production cost.
Description
Technical field
The invention relates to a kind of in aircraft industry, uses agitating friction weldering welding structure to carry out aluminum alloy outer cover
The method of drawing and forming.
Background technology
Aircraft industry field, aborning, aluminum alloy outer cover drawing and forming is that the sheet material utilizing monoblock is carried out, part
After molding the jaw surplus of both sides cut waste product, as a example by certain aluminum alloy outer cover part, skin part development size is
400mm × 450mm, and during molding, the woollen size of needs is but 600mm × 1590mm, stock utilization only 30%, waste is tight
Weight.Being in great demand of the most this aluminum alloy outer cover part, skin material utilization rate is typically in 30%-40%, because of
This, expend greatly.
Summary of the invention
In order to solve problem above, the present invention provides a kind of utilization rate improving material, reduces adopting of enterprise's production cost
The method carrying out aluminum alloy outer cover drawing and forming by agitating friction weldering welding structure.
The technical solution used in the present invention is: a kind of aluminum alloy outer cover stretch forming method, and method is as follows:
1) two blocks of jaw surplus plates of preparation；
2) interface of jaw surplus plate and covering forming woollen plate is cleaned out, remove surface alclad layer, then use
Acetone cleans；Preferably, the thickness of covering forming woollen plate is 2-3.5mm.
3) jaw surplus plate and covering forming woollen plate are fixed on clamping table；
4) use agitating friction to weld, make covering forming woollen plate both sides respectively weld one block of jaw surplus plate,
Prestretched part；
5) prestretched part is placed on skin drawing machine carries out drawing and forming, by the jaw surplus plate of both sides along weldering after molding
Seaming and cutting remove.
Upper described aluminum alloy outer cover stretch forming method, in agitating friction weldering welding sequence, the stirring tool of employing
It is: material is W18Cr4V, the shaft shoulder a diameter of 10mm-13mm that stirring-head is pyramidal structure, and is left hand thread, stirring-head length
It is eyelid covering woollen plate thickness for L=δ-0.2mm, described δ.
Above-mentioned aluminum alloy outer cover stretch forming method, in agitating friction weldering welding sequence, technological parameter is: stirring-head
Inclination angle be 2 °, stirring-head direction of rotation is clockwise, and shaft shoulder volume under pressure is 0.2mm-0.25mm, and rotary speed is
700rpm-800rpm, speed of welding is 150mm/min-235mm/min.
In order to improve the utilization rate of material, in line with the purpose of cost efficiency, the employing welding that changes into of the invention is tied
The form of structure carries out drawing and forming.But, owing to eyelid covering needs to bear the pulling force of about 500KN when drawing and forming, to welding matter
Amount requires higher, and technique urgent problem is to find a suitable butt welding process, makes weld strength meet and is drawn into
The requirement of type, welding method is reliable and simple to operate.But, skin material predominantly 2000 is the high strength alumin ium alloy being with 7000
(annealed state), this high strength alumin ium alloy weldability is poor, when using tradition fusion welding method, is easily generated pore, splits in welding process
The defects such as stricture of vagina, welding deformation is big, and joint performance is substantially reduced, it is impossible to meet the technological requirement of skin drawing molding.Through inventor
Continuous exploratory development and substantial amounts of experiment, find use agitating friction weldering welding manner, it is thus achieved that dense structure, zero defect
Weld seam, welding joint mechanical property meets the requirement of skin drawing molding.The present invention passes through agitating friction welding technology by eyelid covering
Molding woollen changes welding structure into, will must weld with jaw remaining materials with material by skin drawing part, it is achieved jaw
Balance aluminum alloy repeatedly cuts welding and utilizes, and makes stock utilization improve more than 40%, reduces production cost.
The invention has the beneficial effects as follows:
1) present invention realizes the welding structure of covering forming woollen by agitating friction welding technology, thus is drawn into
Type, it is achieved jaw balance aluminum sheet alloy repeatedly cuts welding and utilizes, makes stock utilization improve more than 40%, reduces and produce into
This.
2) aluminum alloy plate materials after the welding that the present invention relates to carries out drawing and forming on skin drawing machine, and weld strength is full
Foot production requirement, commissure flawless.
3) the agitating friction soldering equipment that the present invention relates to is to be converted by normal vertical miller, without flying in welding process
Spatter, smoke dust, pore-free, be not required to add welding wire and protective gas, simple to operate, low cost.
Accompanying drawing explanation
Fig. 1 is the segmentation schematic diagram of the eyelid covering woollen plate that embodiment uses.
Fig. 2 is agitating friction of the present invention weldering welding schematic diagram.
Fig. 3 is that molding stretches schematic diagram.
Detailed description of the invention
Embodiment one aluminum alloy outer cover stretch forming method
A kind of 7B04 (δ 3mm) aluminum alloy outer cover, development size is 400mm × 450mm, molding woollen a size of 600mm ×
1590mm×δ3mm.The method using the present invention is as follows:
1) as it is shown in figure 1, eyelid covering woollen board size is 600mm × 1590mm, δ=3mm.By an eyelid covering woollen plate segmentation
Becoming three parts, middle part is covering forming woollen plate 1 (590mm × 600mm × δ 3mm), both sides be jaw surplus plate 2 (500mm ×
600mm×δ3mm)。
2) interface of jaw surplus plate and covering forming woollen plate is cleaned out, remove the surface alclad of interface
Layer, then cleans to remove surface and oil contaminant and bur with acetone.
3) as in figure 2 it is shown, jaw surplus plate 2 and covering forming woollen plate 1 are fixed on clamping table 3, it is ensured that dress
The weld line clipped overlaps with stirring-head run trace.
4) use agitating friction to weld, make covering forming woollen plate 1 both sides respectively weld one block of jaw surplus plate 2,
Obtain prestretched part.
The stirring tool 4 used is: material is W18Cr4V, a diameter of 10mm-13mm of the shaft shoulder, and stirring-head is pyramidal structure,
And be left hand thread, a length of L=2.8mm of stirring-head.
In agitating friction weldering welding sequence, technological parameter is: the inclination angle of stirring-head is 2 °, and stirring-head direction of rotation is
Clockwise, shaft shoulder volume under pressure is 0.2mm, and rotary speed is 800rpm, and speed of welding is 200mm/min.
During welding, stirring tool 4 is connected with agitating friction soldering equipment by main shaft 6, after agitating friction weldering welding
Prestretched part, weld seam 5 surface quality is good, and texture is fine and smooth uniformly, and non-trimming and crackle detect through X-ray, internal without substantially
Defect, without unwelded phenomenon.
5) as it is shown on figure 3, by prestretched part clamping to the mould tire 8 of skin drawing machine, equipment jaw 7 is by the jaw of both sides
Surplus plate 2 clamps, and according to the moulding process of actual skin part, carries out drawing and forming, by two after molding on skin drawing machine
The jaw surplus plate of side excises along weld seam 5, it is thus achieved that qualified skin part.
Meanwhile, the jaw surplus plate cut down can be recycled, the jaw surplus plate that will cut down again with separately
One covering forming woollen plate 1 uses agitating friction weldering welding, proceeds the drawing and forming of another covering forming part.Cut
The jaw surplus plate cut off can be recycled, hence in so that part material utilization rate improves 60%, greatly reduces production
Cost.
Claims (1)
1. an aluminum alloy outer cover stretch forming method, it is characterised in that method is as follows:
1) two blocks of jaw surplus plates of preparation；
2) interface of jaw surplus plate and covering forming woollen plate is cleaned out, remove surface alclad layer, then use acetone
Clean；The thickness of described covering forming woollen plate is 2-3.5mm；
3) jaw surplus plate and covering forming woollen plate are fixed on clamping table；
4) use agitating friction to weld, make covering forming woollen plate both sides respectively weld one block of jaw surplus plate, obtain prestretching
Stretch part；
The friction stir welding tools used is: material is W18Cr4V, a diameter of 10mm-13mm of the shaft shoulder, and stirring-head is taper knot
Structure, and be left hand thread, stirring-head a length of L=δ-0.2mm, described δ are covering forming woollen plate thickness；
Technological parameter is: the inclination angle of stirring-head is 2 °, and stirring-head direction of rotation is that shaft shoulder volume under pressure is 0.2mm-clockwise
0.25mm, rotary speed is 700rpm-800rpm, and speed of welding is 150mm/min-235mm/min；
5) prestretched part is placed on skin drawing machine carries out drawing and forming, after molding, the jaw surplus plate of both sides is cut along weld seam
Remove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258656.3A CN104014999B (en) | 2014-06-12 | 2014-06-12 | A kind of aluminum alloy outer cover stretch forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258656.3A CN104014999B (en) | 2014-06-12 | 2014-06-12 | A kind of aluminum alloy outer cover stretch forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104014999A CN104014999A (en) | 2014-09-03 |
| CN104014999B true CN104014999B (en) | 2016-11-23 |
Family
ID=51432153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410258656.3A Active CN104014999B (en) | 2014-06-12 | 2014-06-12 | A kind of aluminum alloy outer cover stretch forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104014999B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346542A (en) * | 2019-08-07 | 2019-10-18 | 沈阳飞机工业（集团）有限公司 | A kind of pull-shaped lubricants performance test appraisal procedure of aluminum alloy outer cover |
| CN114393084A (en) * | 2021-12-31 | 2022-04-26 | 上海庆华蜂巢科技发展股份有限公司 | Skin forming process and equipment for multi-curved-surface plate and multi-curved-surface plate |
| CN117225969B (en) * | 2023-11-14 | 2024-03-15 | 中国重型机械研究院股份公司 | Follow-up cover plate for skin stretcher and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3722068A (en) * | 1971-02-22 | 1973-03-27 | Northrop Corp | Method for forming titanium sheets |
| CN102626824A (en) * | 2012-04-28 | 2012-08-08 | 沈阳航空航天大学 | Friction stir welding process for preparing high-performance aluminum alloy sheet |
| CN103272908A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Stretch forming method for titanium skin part |
| CN103537881A (en) * | 2013-09-30 | 2014-01-29 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing alclad on surface of aluminum lithium alloy plate |
| CN103801609A (en) * | 2014-03-03 | 2014-05-21 | 沈阳飞机工业（集团）有限公司 | Stretch-bending forming method for aircraft skin part |
-
2014
- 2014-06-12 CN CN201410258656.3A patent/CN104014999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3722068A (en) * | 1971-02-22 | 1973-03-27 | Northrop Corp | Method for forming titanium sheets |
| CN102626824A (en) * | 2012-04-28 | 2012-08-08 | 沈阳航空航天大学 | Friction stir welding process for preparing high-performance aluminum alloy sheet |
| CN103272908A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Stretch forming method for titanium skin part |
| CN103537881A (en) * | 2013-09-30 | 2014-01-29 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing alclad on surface of aluminum lithium alloy plate |
| CN103801609A (en) * | 2014-03-03 | 2014-05-21 | 沈阳飞机工业（集团）有限公司 | Stretch-bending forming method for aircraft skin part |
Non-Patent Citations (1)
| Title |
|---|
| 航空用铝合金搅拌摩擦焊拉伸特性;陈振中等;《沈阳航空航天大学学报》;20131031;第30卷(第5期);第47-50页 * |
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| Publication number | Publication date |
|---|---|
| CN104014999A (en) | 2014-09-03 |
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