CN108421874A - A kind of variable cross-section metal pipe material Electromagnetic bulging device and method - Google Patents
A kind of variable cross-section metal pipe material Electromagnetic bulging device and method Download PDFInfo
- Publication number
- CN108421874A CN108421874A CN201810513808.8A CN201810513808A CN108421874A CN 108421874 A CN108421874 A CN 108421874A CN 201810513808 A CN201810513808 A CN 201810513808A CN 108421874 A CN108421874 A CN 108421874A
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- metal pipe
- pipe material
- variable cross
- boss
- sleeve
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- 239000000463 material Substances 0.000 title claims abstract description 114
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 107
- 239000002184 metal Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001939 inductive effect Effects 0.000 claims abstract description 31
- 239000003990 capacitor Substances 0.000 claims description 16
- 238000004146 energy storage Methods 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 230000005672 electromagnetic field Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000006052 feed supplement Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to a kind of Electromagnetic bulging device and methods of variable cross-section metal pipe material, including metal pipe material to be formed and power-supply system, the left and right both ends of the metal pipe material to be formed are arranged with a sleeve respectively, the sleeve inner is provided with a boss, one end of the boss stretches into the inside of metal pipe material to be formed and is equipped with inductive rod, and the power-supply system passes through the conducting wire sleeve connection with metal pipe material both ends to be formed respectively.The present invention realizes that variable cross-section metal pipe material shapes using free bulge principle, simple and reasonable for structure, by applying electric current to metal pipe material, to realize section reducing that metal pipe material is located at an arbitrary position.It is also possible to accurately control the forming of variable cross-section metal pipe material using mould structure.
Description
Technical field：
The present invention relates to a kind of variable cross-section metal pipe material Electromagnetic bulging device and methods.
Background technology：
Hydraulic expanding-forming technology manufactures hollow and thin-walled tube components, and to have that process is few, at low cost, light-weight, strength and stiffness are good etc. excellent
Point, China's ship naval vessels, aerospace, automobile making fast development, for welding the demand of reducer pipe structural member increasingly
It is more, it is gradually widely applied in various manufacturing industry.But using conventional hydraulic forming technique production automobile rack, engine
When the big odd-shaped cross section hollow of the axial dimensions such as frame, since the obstruction that frictional resistance adds greatly mold geometry leads to axis
To feed supplement difficulty, easily causes pipe fitting excessive thinning and rupture or the defects of fillibility is bad.
Electromagnetic pulse forming technology can improve the material forming limit, and with being easy to accurately control, forming speed is fast, at
The high feature of shape workpiece accuracy.Electromagnetic forming technique is mainly used in aerospace, ship naval vessels, weaponry and automobile making
Equal fields, specifically on the plastic processing of tubing, especially expansion tube process using more, so, electro-magnetic forming is in reducer pipe
There is great advantage in Plastic Forming.
Traditional electro-magnetic forming process is usually to generate electromagnetic repulsive force to metal pipe material using coil to be formed, as in
By electric current in coil when state's patent publication No. is the tubing electromagnetic forming device forming of the document introduction of CN103406418A,
Workpiece is generated vortex by magnetic fields, pushes workpiece to be transported to mold since electromagnetic field effect generates repulsive force between coil and workpiece
It is dynamic that workpiece is made to be adjacent to mold, with this Forming Workpiece.There is main problem existing for existing metal tube electromagnetic forming method：（1）
Capacitance maximum capacity is limited in electro-magnetic forming, is only applicable to conduct electricity very well, (such as copper, aluminium close the lower metal of mechanical strength
Gold), and the pipe thickness of metal tube is generally less than 3mm；（2）Coil is relatively fixed with pipe fitting position, pipe fitting bulging or undergauge
When, in order to generate corresponding electromagnetic force, need to change the relative position between coil and workpiece；（3）Pipe fitting bulging sets coil
Inside tubing, for generating electromagnetic repulsion force, reach metal tube bulging purpose.This method can only be formed with certain diameter
Tubing is shaped just relatively difficult when metal pipe material diameter is smaller using loop construction, and coil cost of manufacture is higher.
Invention content：
The present invention has made improvements in view of the above-mentioned problems of the prior art, i.e., technical problem to be solved by the invention is to provide
A kind of variable cross-section metal pipe material Electromagnetic bulging device and method, it is simple and reasonable for structure, electric current directly is applied to metal pipe material, it can
It realizes the section reducing located at an arbitrary position of metal pipe material, solves high mechanical properties, low conductivity and the big variable cross-section gold of wall thickness
Belong to forming tubular product.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of variable cross-section metal pipe material Electromagnetic bulging dress
It sets, including metal pipe material to be formed and power-supply system, the left and right both ends of the metal pipe material to be formed are arranged with a set of respectively
Cylinder, the sleeve inner are provided with a boss, and one end of the boss stretches into the inside of metal pipe material to be formed and installs thoughts
Answer stick；The power-supply system passes through the conducting wire sleeve connection with metal pipe material both ends to be formed respectively.
Further, the sleeve is metal material, and one end of sleeve has to be set in outside metal pipe material to be formed
The other end of first blind hole of side, sleeve has the second blind hole, and conducting wire is by screw in compression inside the second blind hole.
Further, the boss is insulating materials, and the T-shaped shape of boss, one end of boss is connected firmly by screw first
The bottom hole of blind hole, the other end offer extending radially through and to install the through-hole of inductive rod, and insulation is placed in the through-hole
Gasket fixes inductive rod.
Further, the inductive rod is high conductivity material, and gap is equipped between inductive rod and metal pipe material to be formed.
Further, insulating layer is equipped between the inductive rod and metal pipe material to be formed.
Further, the metal pipe material to be formed is high conductivity material or low conductivity material.
Further, the power-supply system includes charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor
And closure switch；The charge power supply, transformer, rectification silicon stack, current-limiting resistance and energy-storage capacitor form charge circuit；
The energy-storage capacitor, closure switch, sleeve, boss, inductive rod and metal pipe material to be formed form discharge loop.
The another technical solution that the present invention uses is：A kind of Electromagnetic bulging method of variable cross-section metal pipe material is specific to walk
It is rapid as follows：
Step 1：The conducting wire at energy-storage capacitor both ends is pressed on by screw respectively on the sleeve at metal pipe material both ends to be formed, set
Boss inside cylinder is extend into inside metal pipe material to be formed, and the inductive rod on boss is located at the to be deformed of metal pipe material to be formed
Place；
Step 2：It is charged to energy-storage capacitor with charge power supply, required electric discharge is deformed when reaching metal pipe material to be formed
When voltage, stop charging；
Step 3：Closure switch are closed, form metal tubing is treated and passes to electric current and generate pulse electromagnetic field, both ends inductive rod
Surface generates the vortex opposite with current direction in metal pipe material to be formed, generates the electromagnetic repulsion force with repulsive interaction；
Step 4：When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material to be formed, metal pipe material to be formed is driven
It is to be deformed place occur bulging.
Compared with prior art, the present invention has the following effects that：
（1）The present invention is compared with traditional electro-magnetic forming, it can be achieved that the section reducing of metal pipe material any position, also has structure
Simply, advantage with long service life；
（2）The present invention is directly powered to metal pipe material, and the size of electromagnetic force can be controlled by electric current, can be formed with certain thickness
The tubing of degree；In addition, the limitation of high conductivity material can only be shaped by breaching traditional electro-magnetic forming, realize to low conductivity material
The forming of material；
（3）Conducting wire is pressed on sleeve using blind hole is opened up on sleeve by screw by the present invention, metal pipe material outer surface and set
Tube inner surface connects, and realizes the connection of conducting wire and metal pipe material, reasonable for structure, easy to use.
Description of the drawings：
Fig. 1 is the organigram of the embodiment of the present invention；
Fig. 2 is the main view organigram of sleeve；
Fig. 3 is the left view organigram of sleeve；
Fig. 4 is the main view organigram of boss；
Fig. 5 is the left view organigram of boss.
In figure：
1- charge power supplies；2- transformers；3- rectification silicon stacks；4- current-limiting resistances；5- energy-storage capacitors；6- closure switch；7- is waited for into
Shape metal pipe material；8- inductive rods；Metal pipe material after 9- formings；10- sleeves；The first blind holes of 101-；The second blind holes of 102-；11- is convex
Platform；111- through-holes；I-charge circuit；II discharge loop.
Specific implementation mode:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-5, a kind of variable cross-section metal pipe material Electromagnetic bulging device of the present invention, including metal pipe material to be formed 7
And power-supply system, the left and right both ends of the metal pipe material 7 to be formed are arranged with a sleeve 10, are set inside the sleeve 10 respectively
It is equipped with a boss 11, one end of the boss 11 stretches into the inside of metal pipe material 7 to be formed and is equipped with inductive rod 8, inductive rod 8
Positioned at the place to be deformed of metal pipe material 7 to be formed；The power-supply system by conducting wire respectively with 7 both ends of metal pipe material to be formed
Sleeve 10 connect.Directly treat the energization of form metal tubing 7 when use, the surface of both ends inductive rod 8 generate with it is to be formed
The opposite vortex of current direction in metal pipe material 7 generates the electromagnetic repulsion force with repulsive interaction；When the electromagnetic repulsion force of generation reaches
To metal pipe material 7 to be formed yield strength when, drive metal pipe material 7 to be formed it is to be deformed place occur bulging.
In the present embodiment, the sleeve 10 is metal material, and shape is determined by the shape of metal pipe material 7 to be formed.Set
One end of cylinder 10 has to be set in first blind hole 101 in 7 outside of metal pipe material to be formed, and the other end of sleeve 10 has the
Two blind holes 102, conducting wire is by screw in compression inside the second blind hole 102.Conducting wire is pressed on sleeve 10 by screw, is waited for into
7 outer surface of shape metal pipe material connects with 10 inner surface of sleeve, realizes the connection of conducting wire and metal pipe material to be formed, reasonable for structure,
It is easy to use.
In the present embodiment, the aperture of first blind hole 101 is slightly larger than the outer diameter of metal pipe material 1 to be formed on the sleeve 10,
It is compressed it on metal pipe material to be formed by rubber ring.
In the present embodiment, the boss 11 is insulating materials, and one end of 11 T-shaped shape of boss, boss 11 is solid by screw
Be associated in the bottom hole of the first blind hole 101, the other end offer it is extending radially through and to install the through-hole 111 of inductive rod, it is described
Insulation spacer is placed in through-hole 111 to fix inductive rod 8.The length that boss 11 stretches into inside metal pipe material 7 to be formed is unlimited, can
It extends at 7 inside arbitrary section of metal pipe material to be formed, realizes that the section of any position in metal pipe material 7 to be formed becomes
Diameter.
In the present embodiment, the inductive rod 8 is high conductivity material（Such as the material of aluminium or copper etc）, inductive rod 8
It is cylindric（In the actual production process, shape is not limited to cylinder, hexahedron or irregular shape, according to be formed
The type of metal pipe material is chosen）.
In the present embodiment, it is equipped with gap between the inductive rod 8 and metal pipe material to be formed 7, insulation is equipped in the gap
Layer, it is close as far as possible in the case where ensureing to insulate between inductive rod 8 and metal pipe material to be formed 7.
In the present embodiment, the metal pipe material 7 to be formed is high conductivity material（Such as the material of aluminium or copper etc）,
It is alternatively low conductivity material（Such as steel tubing or titanium alloy pipe）, electromagnetic force is controlled by controlling electric current when use
Size.The shape of the metal pipe material to be formed 7 is hollow cylinder（In the actual production process, the shape of metal pipe material to be formed
Shape is not limited to cylinder, hexahedron or irregular shape, is selected according to process requirements）.
In the present embodiment, the power-supply system includes charge power supply 1, transformer 2, rectification silicon stack 3, current-limiting resistance 4, energy storage
Capacitor 5 and closure switch 6；The charge power supply 1, transformer 2, rectification silicon stack 3, current-limiting resistance 4 and energy-storage capacitor 5
Charge circuit I is formed, charging process is that charging voltage charges to energy-storing container after transformation and rectification；The energy-storage capacitor
5, closure switch 6, sleeve 10, boss 11, inductive rod 8 and metal pipe material to be formed 7 form discharge loop.Preferably, described
Current-limiting resistance 4 is for limiting charge circuit size of current, and the closure switch 6 are used to control the logical of discharge loop electric current
It is disconnected.
The another technical solution that the present invention uses is：A kind of Electromagnetic bulging method of variable cross-section metal pipe material is specific to walk
It is rapid as follows：
Step 1：The conducting wire at 5 both ends of energy-storage capacitor is pressed on the sleeve 10 at 7 both ends of metal pipe material to be formed by screw respectively
On, the boss 11 inside sleeve 10 is extend into inside 7 material of metal tube to be formed, and the inductive rod 8 on boss 11 is located at gold to be formed
Belong to the place to be deformed of tubing 7；
Step 2：Charged to energy-storage capacitor 5 with charge power supply 1, when reach metal pipe material 7 to be formed deform it is required
When discharge voltage, stop charging；
Step 3：Closure switch 6 are closed, form metal tubing 7 is treated and passes to electric current and generate pulse electromagnetic field, both ends inductive rod 8
Surface generate the vortex opposite with current direction in metal pipe material 7 to be formed, generate the electromagnetic repulsion force with repulsive interaction；
Step 4：When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material 7 to be formed, metal tube to be formed is driven
Bulging occurs for the place to be deformed of material 7, finally obtains metal pipe material 9 after forming.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (8)
1. a kind of variable cross-section metal pipe material Electromagnetic bulging device, it is characterised in that：Including metal pipe material to be formed and power-supply system,
The left and right both ends of the metal pipe material to be formed are arranged with a sleeve respectively, and the sleeve inner is provided with a boss, described convex
One end of platform stretches into the inside of metal pipe material to be formed and is equipped with inductive rod；The power-supply system by conducting wire respectively with wait for into
The sleeve connection at shape metal pipe material both ends.
2. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that：The sleeve is
One end of metal material, sleeve has to be set in the first blind hole on the outside of metal pipe material to be formed, the other end tool of sleeve
There is the second blind hole, conducting wire is by screw in compression inside the second blind hole.
3. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 2, it is characterised in that：The boss is
One end of insulating materials, the T-shaped shape of boss, boss connects firmly the bottom hole in the first blind hole by screw, and the other end is offered along diameter
To perforative and to install the through-hole of inductive rod, in the through-hole place insulation spacer and fix inductive rod.
4. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that：The inductive rod
For high conductivity material, gap is equipped between inductive rod and metal pipe material to be formed.
5. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 4, it is characterised in that：The inductive rod
Insulating layer is equipped between metal pipe material to be formed.
6. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that：It is described to be formed
Metal pipe material is high conductivity material or low conductivity material.
7. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that：The power supply system
System includes charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor and closure switch；The charge power supply,
Transformer, rectification silicon stack, current-limiting resistance and energy-storage capacitor form charge circuit；The energy-storage capacitor, closure switch, set
Cylinder, boss, inductive rod and metal pipe material to be formed form discharge loop.
8. a kind of Electromagnetic bulging method of variable cross-section metal pipe material, it is characterised in that：Including using as described in claim 1~7
Any one variable cross-section metal pipe material Electromagnetic bulging device, be as follows：
Step 1：The conducting wire at energy-storage capacitor both ends is pressed on by screw respectively on the sleeve at metal pipe material both ends to be formed, set
Boss inside cylinder is extend into inside metal pipe material to be formed, and the inductive rod on boss is located at the to be deformed of metal pipe material to be formed
Place；
Step 2：It is charged to energy-storage capacitor with charge power supply, required electric discharge is deformed when reaching metal pipe material to be formed
When voltage, stop charging；
Step 3：Closure switch are closed, form metal tubing is treated and passes to electric current and generate pulse electromagnetic field, both ends inductive rod
Surface generates the vortex opposite with current direction in metal pipe material to be formed, generates the electromagnetic repulsion force with repulsive interaction；
Step 4：When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material to be formed, metal pipe material to be formed is driven
It is to be deformed place occur bulging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513808.8A CN108421874B (en) | 2018-05-25 | 2018-05-25 | Electromagnetic bulging device and method for variable-section metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513808.8A CN108421874B (en) | 2018-05-25 | 2018-05-25 | Electromagnetic bulging device and method for variable-section metal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108421874A true CN108421874A (en) | 2018-08-21 |
| CN108421874B CN108421874B (en) | 2024-03-29 |
Family
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|---|---|---|---|
| CN201810513808.8A Active CN108421874B (en) | 2018-05-25 | 2018-05-25 | Electromagnetic bulging device and method for variable-section metal pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731982A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Difficult-to-deformation material complex section hollow unit hinders heating electromagnetic manufacturing process certainly |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2374106A1 (en) * | 1976-12-20 | 1978-07-13 | Ardef Asbl | Magnetic pulse metal tube shaping system - also uses induction member to heat workpiece for improved results |
| JPH0471742A (en) * | 1990-07-10 | 1992-03-06 | Mitsubishi Heavy Ind Ltd | Manufacture of tube having complicated section hole |
| JPH04356322A (en) * | 1991-05-30 | 1992-12-10 | Showa Alum Corp | Electromagnetic joining method for each metallic member having tubular joint part |
| US5826320A (en) * | 1997-01-08 | 1998-10-27 | Northrop Grumman Corporation | Electromagnetically forming a tubular workpiece |
| JP2011073052A (en) * | 2009-09-30 | 2011-04-14 | Kobe Steel Ltd | Method for electromagnetically forming aluminum material |
| CN104985043A (en) * | 2015-01-30 | 2015-10-21 | 西北工业大学 | Electromagnetic induction heating bulging apparatus and shaping method for metal conductor pipe |
| CN105170768A (en) * | 2015-10-13 | 2015-12-23 | 福州大学 | Device and control method for using electromagnetic attractive force caused by sudden current change to form metal plate |
| CN105665513A (en) * | 2016-04-19 | 2016-06-15 | 沈阳工业大学 | Forming device for machining complex variable section small-scale tubes and forming method |
| CN105728541A (en) * | 2016-04-28 | 2016-07-06 | 华中科技大学 | Coil-free electromagnetic-pulse forming device and method of metal plates |
| CN105798102A (en) * | 2016-04-29 | 2016-07-27 | 苏州大学 | Pipe blank wrinkling device |
| CN106694681A (en) * | 2017-03-06 | 2017-05-24 | 华中科技大学 | Electromagnetic forming device and method of metal pipe |
| CN206925192U (en) * | 2017-03-06 | 2018-01-26 | 华中科技大学 | A kind of electromagnetic forming device of metal tube |
| CN207266987U (en) * | 2017-09-08 | 2018-04-24 | 华中科技大学 | A kind of electromagnetic repulsive force flange fixing installation based on inertial confinement |
| CN208466939U (en) * | 2018-05-25 | 2019-02-05 | 福州大学 | A kind of variable cross-section metal pipe material Electromagnetic bulging device |
-
2018
- 2018-05-25 CN CN201810513808.8A patent/CN108421874B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2374106A1 (en) * | 1976-12-20 | 1978-07-13 | Ardef Asbl | Magnetic pulse metal tube shaping system - also uses induction member to heat workpiece for improved results |
| JPH0471742A (en) * | 1990-07-10 | 1992-03-06 | Mitsubishi Heavy Ind Ltd | Manufacture of tube having complicated section hole |
| JPH04356322A (en) * | 1991-05-30 | 1992-12-10 | Showa Alum Corp | Electromagnetic joining method for each metallic member having tubular joint part |
| US5826320A (en) * | 1997-01-08 | 1998-10-27 | Northrop Grumman Corporation | Electromagnetically forming a tubular workpiece |
| JP2011073052A (en) * | 2009-09-30 | 2011-04-14 | Kobe Steel Ltd | Method for electromagnetically forming aluminum material |
| CN104985043A (en) * | 2015-01-30 | 2015-10-21 | 西北工业大学 | Electromagnetic induction heating bulging apparatus and shaping method for metal conductor pipe |
| CN105170768A (en) * | 2015-10-13 | 2015-12-23 | 福州大学 | Device and control method for using electromagnetic attractive force caused by sudden current change to form metal plate |
| CN105665513A (en) * | 2016-04-19 | 2016-06-15 | 沈阳工业大学 | Forming device for machining complex variable section small-scale tubes and forming method |
| CN105728541A (en) * | 2016-04-28 | 2016-07-06 | 华中科技大学 | Coil-free electromagnetic-pulse forming device and method of metal plates |
| CN105798102A (en) * | 2016-04-29 | 2016-07-27 | 苏州大学 | Pipe blank wrinkling device |
| CN106694681A (en) * | 2017-03-06 | 2017-05-24 | 华中科技大学 | Electromagnetic forming device and method of metal pipe |
| CN206925192U (en) * | 2017-03-06 | 2018-01-26 | 华中科技大学 | A kind of electromagnetic forming device of metal tube |
| CN207266987U (en) * | 2017-09-08 | 2018-04-24 | 华中科技大学 | A kind of electromagnetic repulsive force flange fixing installation based on inertial confinement |
| CN208466939U (en) * | 2018-05-25 | 2019-02-05 | 福州大学 | A kind of variable cross-section metal pipe material Electromagnetic bulging device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731982A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Difficult-to-deformation material complex section hollow unit hinders heating electromagnetic manufacturing process certainly |
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| Publication number | Publication date |
|---|---|
| CN108421874B (en) | 2024-03-29 |
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