CN106807824B - A kind of device, uniform press coil and its acquisition methods of even pressure electromagnetic device shaping - Google Patents
A kind of device, uniform press coil and its acquisition methods of even pressure electromagnetic device shaping Download PDFInfo
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- CN106807824B CN106807824B CN201710177066.1A CN201710177066A CN106807824B CN 106807824 B CN106807824 B CN 106807824B CN 201710177066 A CN201710177066 A CN 201710177066A CN 106807824 B CN106807824 B CN 106807824B
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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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention provides a kind of device, uniform press coil and its acquisition methods of even pressure electromagnetic device shaping, the device of even pressure electromagnetic device shaping includes：Conductive channel, coil and workpiece；The top that U-shaped conductive channel is arranged on coil surrounds coil, and workpiece setting forms current loop in the lower section of coil, workpiece with conductive channel；Coil includes：Conducting wire, epoxy plate and reinforcement material；The skeleton being made of epoxy plate provides support for conducting wire；Reinforcement material is arranged on as external reinforcement layer on the outside of conducting wire, for providing enough intensity；During work, variable-current is influenced workpiece and has induced vortex in conductive channel in by coil, forms current loop, since coil selects relatively thin red copper wire winding multilayer multiturn to form, suffered electromagnetic force bigger, forming efficiency higher in workpiece；To ensure coil strength, reinforcement material is wound reinforcing respectively along winding wire coiling direction and perpendicular to conducting wire coiling direction respectively, realizes high-strength efficiently even pressure electromagnetic device shaping.
Description
Technical field
The invention belongs to metal forming manufacturing technology field, the device shaped more particularly, to a kind of even pressure electromagnetic device,
Uniform press coil and its acquisition methods.
Background technology
Electro-magnetic forming be changing magnetic field with inductive loop interaction in metal material, generate moment electromagnetic force and
A kind of caused high-speed deformation, as a kind of high energy and high speed rate forming technique, electro-magnetic forming is improving the alloy in lightweight such as aluminium alloy
Material forming manufacture level has a high potential in terms of breaking through some key technology bottlenecks.In electro-magnetic forming, for tablet electromagnetism into
The generally planar spiral winding, but the distribution of electromagnetic force that planar spiral winding generates on workpiece is uneven, constrains it of shape
Application range.Uniform press coil can be formed than more uniform electromagnetic force, shaping effect as a kind of new coil on workpiece
Rate has significant advantage, therefore than flat spin coil higher on the components such as shaping car door cavity, mobile phone shell and fuel cell plate
It has received widespread attention.
Fig. 1 is uniform press coil schematic diagram, there are one spill conductive channel outside coil, between conductive channel and coil
Insulation is good and the circuit of a closing is constituted with Forming Workpiece.When capacitance discharges, variation is generated in actuating coil
Electric current, while the opposite sensing electric current of outgoing direction is sensed in circuit outside.Since workpiece and conductive channel form back
Road, therefore inductive current direction in workpiece, size are identical, suffered electromagnetic force is than more uniform, along with induced electricity flows back to
Road is entirely around coil, so magnetic field energy loss is smaller, efficiency is higher.
At present in relation in the research of uniform press coil, in order to ensure enough structural strengths, making coil in electro-magnetic forming
It is excessive and deform to be unlikely to stress in the process, often is directly cut to obtain coil by copper billet or copper alloy block.This method is led to
The intensity of coil itself is crossed to ensure integrally-built intensity, it is horizontal that the uniform press coil because obtained from must have thicker coil
Section so that current density is smaller in coil, and then the electromagnetic force that workpiece is caused to be subject to is smaller, limits the shaping effect of coil
Rate.In addition, copper billet is cut into, uniform press coil shape technology is complicated, cutting is time-consuming longer.These technological deficiencies directly restrict
The application of uniform press coil and the research and development of association area.
The content of the invention
The defects of for the prior art, it is an object of the invention to provide a kind of devices of even pressure electromagnetic device shaping, it is intended to
Solve the problems, such as that the forming efficiency of prior art coil is low.
The present invention provides a kind of device of even pressure electromagnetic device shaping, including：Conductive channel, coil and workpiece；U-shaped is conductive
The top that passage is arranged on the coil surrounds coil, and workpiece setting is in the lower section of the coil, workpiece and the conductive channel
Form current loop；Coil includes：Conducting wire, epoxy plate and reinforcement material；The skeleton being made of epoxy plate provides support for conducting wire；
Reinforcement material is arranged on as external reinforcement layer on the outside of conducting wire, for providing enough intensity；During work, variable-current in by coil
Influence, induced vortex in workpiece and conductive channel, formd current loop；Conducting wire is led for the red copper of arbitrary cross section product
Line；Reinforcement material is wound reinforcing respectively along conducting wire coiling direction and perpendicular to conducting wire coiling direction；When the thickness of conducting wire
During less than the depth of penetration, conducting wire is thinner, and current density is bigger, and it is also bigger to sense the current density of generation, suffered electromagnetic force on workpiece
It is bigger, forming efficiency higher；Wherein, the depth of penetration of the electric current in red copperF is power frequency, and μ is magnetic conductance
Rate, γ are electrical conductivity.
Further, the cross-sectional area of conducting wireWherein, Δ T for red copper wire most
Big Wen Sheng, ρ1For the resistivity of red copper, c is specific heat capacity, ρ2For the mass density of red copper, triseFor coil current waveform first
Rising time, I (t) are coil current and the relation of time, and t is the time.
Further, reinforcement material is glass fibre or bavin dragon zylon.
The present invention also provides a kind of acquisition methods of uniform press coil, comprise the following steps：
(1) epoxy plate is fixed on coil winding machine；
(2) using W19 epoxy resin, and consolidate according to dosage phr=amine equivalents × epoxide number of amine to configure epoxy resin
Agent；Wherein, phr refers to the mass fraction of curing agent needed for every 100 parts of resins, lives in the relative molecular weight ÷ amine of amine equivalent=amine
The number of hydrogen is sprinkled, epoxide number refers to the amount of the substance of contained epoxide group in 100g epoxy resin；
(3) by red copper wire according to pre-set minimum turn-to-turn away from being wrapped on epoxy axle center；
(4) epoxy curing agent configured is applied in the red copper wire wound；
(5) after having smeared epoxy curing agent, according to maximum intensity selection reinforcement material suffered by coil during emulation, will add
Gu material is along conducting wire coiling direction with uniformly winding one layer on coil respectively perpendicular to conducting wire coiling direction；And it is reinforcing
Epoxy curing agent is uniformly smeared on material, completes the coiling of one layer of red copper wire and two layers of reinforcing layer；
(6) step (3)-(5) are repeated, complete the coiling of multilayer multiturn uniform press coil.
Further, the reinforcement material is the S-2 glass fibres that ultimate strength is 4.9GPa.
The present invention also provides a kind of uniform press coil obtained based on above-mentioned acquisition methods, including：Conducting wire, epoxy plate
And reinforcement material；The skeleton being made of the epoxy plate provides support for the conducting wire；The reinforcement material is arranged on described lead
As external reinforcement layer on the outside of line, for providing enough intensity.
By the above technical scheme conceived by the present invention, compared with prior art, due to using epoxy plate as interior branch
Support；Reinforcement material is wound on technique for coiling and carries out external reinforcement, and respectively along conducting wire coiling direction and perpendicular to conducting wire coiling
Direction is wound, and provides sufficient intensity for coil in all directions, greatly improves the integral strength of coil, for example S-
2 glass fibre ultimate strengths are 4.9GPa or so, much larger than the ultimate strength of various copper classes.And in the present invention, due to single turn
Conducting wire is thinner, reduces the influence of kelvin effect to greatest extent, and the space of saving has higher for the lattice coil of coiling
Forming efficiency.Structure is more flexible, can be according to actual needs using arbitrary cross section product (being not less than smallest cross-section area)
The coil of the arbitrary number of turn of copper conductor coiling and the number of plies.The present invention is simpler by the way of copper conductor coiling, efficiently.
Description of the drawings
Fig. 1 is the principle schematic of uniform press coil；
Fig. 2 is the current time relational graph that electro-magnetic forming experiment is once carried out using uniform press coil；
Fig. 3 be three kinds of coils on workpiece center a little locate generation electromagnetic force size comparison diagram；
Fig. 4 is a kind of individual layer uniform press coil cross-sectional view of the present invention.
In all of the figs, wherein：1 is conductive channel, and 2 be coil, and 3 be workpiece, and 2-1 is conducting wire, and 2-2 is epoxy plate,
2-3 is glass fibre.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In view of the above-mentioned problems, the present invention provides a kind of methods of the coiling uniform press coil with high intensity, it is intended to solve
The technology that certainly coil current density is smaller in the prior art, forming efficiency is relatively low, coil processed complex and process time are longer
Problem.
In the present invention, in order to improve forming efficiency, no longer cut using copper billet and obtain uniform press coil, but selected relatively thin
Red copper wire (the wrapped flat type copper wire of single glass fibre bag Kapton) be wound the uniform press coil of multilayer multiturn；Together
When, the electromagnetic force during electro-magnetic forming can not be born since thin conducting wire self-strength is relatively low, specific reinforcement material is selected to make
For external reinforcement, epoxy plate improves the intensity of coil entirety as inner support.
According to the law of electromagnetic induction, suffered electromagnetic force is on workpiece：WhereinFor in workpiece
Sensing electric current,Vortex is generated in same point in the magnetic field generated for coil at the workpiece and workpiece magnetic vector and.Sense
Induced current density is bigger, suffered electromagnetic force on workpieceAlso bigger, forming efficiency is higher.
According to kelvin effect, the depth of penetration of the electric current on copper is：Wherein, f is power frequency, μ
For magnetic conductivity, γ is electrical conductivity.For electro-magnetic forming, by taking once typical electro-magnetic forming experiment as an example, electric current in coil
Size as shown in Fig. 2,μCopper=μ0=4 π × 10-7/,γCopper=5.8 × 107/ m brings formula (2) into and obtains
The depth of penetration is 1.33mm.Therefore for lattice coil, when conductor thickness is more than the depth of penetration, additional part is not only right
Shaping does not help, and instead so that inner conductor is farther from workpiece, reduces forming efficiency；When conductor thickness is less than the depth of penetration
When, conducting wire is thinner, and current density is bigger, thus the current density for sensing generation is also bigger, and suffered electromagnetic force is bigger on workpiece, into
Shape is more efficient.
It is more efficient using the coil forming of thin copper conductor coiling in order to confirm, it is herein 4mm to coil section size
The single layer coil of × 1mm, the single layer coil of 4mm × 4mm are analyzed with the double-layer coil of 4mm × 1mm, and coil turn is 16
Circle, turn-to-turn is away from being 0.5mm.3 kinds of coil inductances acquire as shown in table 1, to coil discharge (circuit under 160 μ F, 10kV power supplys
Resistance 10m Ω, 5 μ H of line inductance), on obtained workpiece central point electromagnetic force time history plot as shown in figure 3,
The electromagnetic force that the double-layer coil of 4mm × 1mm generates on workpiece as shown in Figure 3 is maximum, and the single layer coil of 4mm × 4mm is in workpiece
The electromagnetic force of upper generation is minimum, therefore the lattice coil forming efficiency higher proposed in this paper using thin copper conductor coiling.
1 varying cross-section coil inductance of table
| 4mm × 1mm, one layer | 4mm × 4mm, one layer | 4mm × 1mm, it is double-deck | |
| Inductance (μ H) | 5.01 | 3.98 | 17.6 |
However, thin copper conductor is not more Bao Yuehao, it is contemplated that heating problem, the Wen Sheng of thin copper conductor is no more than regulation
Value, therefore the cross-sectional area of conducting wire cannot be below a certain particular value.The humidity index of copper conductor according to it includes polyimides
Film is determined with the cohesive humidity index painted, and takes wherein minimum humidity index.According to equation group (3)：The expression formula (4) of wire cross-section area can be obtained：Wherein, R is conducting wire
Resistance, ρ1For resistivity, L is conductor length, and A is wire sectional area, and Q is the heat that conducting wire generates, and I is big for electric current in conducting wire
Small, t is throughput time, and Δ T is conducting wire Wen Sheng, and c is conductor material specific heat capacity, and m is wire quality, ρ2It is close for conductor material quality
Degree.
It is 155 DEG C in view of the wrapped flat type copper wire tolerable temperature of single glass fibre bag Kapton, therefore in room temperature condition
Under, temperature rises Δ T≤130, other constants such as copper conductor electricalresistivityρ1=1.75 × 10-8Ω m, specific heat capacity c=0.39 ×
103J/ (kg DEG C), red copper mass density ρ2=8.92 × 103kg/3.According to the current data of Fig. 2, definite integral is done to formula (4),
It can obtain：Therefore, electromagnetism winding wire smallest cross-section area is 2.62。
To achieve the above object, according to above-mentioned thought, a kind of even pressure for electro-magnetic forming with high intensity is provided
Line of force circle acquisition methods can specifically realize the acquisition of uniform press coil, wherein even by the device that even pressure electromagnetic device shapes
The device of pressure electromagnetic device shaping includes：Conductive channel 1, coil 2, workpiece 3；Conductive channel 1 is arranged on the top of coil 2, workpiece 3
The lower section of coil 2 is arranged on, current loop is formed with conductive channel；Coil 2 is by conducting wire 2-1, epoxy plate 2-2, reinforcement material 2-3
Composition, epoxy plate 2-2 are fixed on conducting wire internal layer as support, and arbitrary section product may be employed (not less than minimum cross-section in conducting wire
Product) red copper wire rather than must be cut using copper billet, reinforcement material in wire external layer as external reinforcement layer, in order to
Enough intensity is provided coil, and reinforcement material need to be respectively along the direction of conducting wire coiling and perpendicular to the direction of conducting wire coiling point
Reinforcing is not wound.In embodiments of the present invention, for magnet coiling reinforcement material can there are many, be specifically as follows glass
Glass fiber or bavin imperial (zylon) etc..
In embodiments of the present invention, multilayer multiturn uniform press coil acquisition methods specifically comprise the following steps：
(1) epoxy plate is fixed on coil winding machine, since turn-to-turn is away from smaller, the stress on workpiece is more uniform, along with copper
The enameled wire thickness of wire external layer is 0.25mm, thus by copper conductor according to the minimum turn-to-turn of 0.5mm away from being wrapped in epoxy axle center
On；
(2) selection is matched somebody with somebody for fastening the W19 epoxy resin of coil according to dosage (phr)=amine equivalent × epoxide number of amine
Curing agent (W19 epoxy resin and its curing agent proportioning are as shown in table 2) is put, wherein phr refers to curing agent needed for every 100 parts of resins
Mass fraction, the number of active hydrogen in the relative molecular weight ÷ amine of amine equivalent=amine, epoxide number refer to contained in 100g epoxy resin
The amount of the substance of epoxide group.Then the epoxy resin configured is uniformly applied on the conducting wire wound；
(3) after having smeared epoxy resin, according to maximum intensity selection reinforcement material suffered by coil during emulation, commonly use and reinforce material
Material and its intensity are as shown in table 3.Then exist respectively by reinforcement material along conducting wire coiling direction and perpendicular to conducting wire coiling direction
One layer is uniformly wound on coil；
(4) step (2) is repeated, epoxy resin is uniformly smeared on reinforcement material, completes the coiling of a layer conductor；
(5) step (1)-(4) are repeated, complete the coiling of multilayer multiturn uniform press coil.
2 W19 epoxy resin of table and its curing agent proportioning
Table 3 is used for the reinforcement material that coil is reinforced
| S-2 glass fibres | Bavin dragon (Zylon) | |
| Tensile strength (GPa) | 4.9 | 5.8 |
| Elasticity modulus (GPa) | 87 | 280 |
| Elongation (%) | 4 | 2.5 |
In general, the above technical scheme conceived by the present invention compared with prior art, has the following advantages：
(1) coil strength higher, using epoxy plate as inner support in terms of structure design；Winding adds on technique for coiling
Gu material carries out external reinforcement, and is wound respectively along conducting wire coiling direction and perpendicular to conducting wire coiling direction, in all directions
Sufficient intensity is provided for coil, greatly improves the integral strength of coil, for example S-2 glass fibres ultimate strength is
4.9GPa or so, much larger than the ultimate strength of various copper classes.
(2) coil forming is more efficient.Since single turn conducting wire is thinner, the influence of kelvin effect is reduced to greatest extent,
The space of saving has higher forming efficiency for the lattice coil of coiling.Structure is more flexible.It can adopt according to actual needs
The arbitrary number of turn of copper conductor coiling of (not less than smallest cross-section area) and the coil of the number of plies are accumulated with arbitrary cross section.
(3) coil processing is simple.Wire cutting is carried out compared to using copper billet, by the way of copper conductor coiling more
Simply, efficiently.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with Fig. 4 and specific embodiment
It is further described as follows：
As shown in figure 4, it is a kind of double-deck uniform press coil cross-sectional view provided in an embodiment of the present invention, wherein conducting wire
2-1 is copper conductor, and reinforcement material 2-3 is glass fibre, and support is provided by the epoxy plate 2-2 skeletons formed for conducting wire in figure.With
Exemplified by the bilayer uniform press coil, the specific winding process of coil is as follows：
Step 1：Epoxy plate is fixed on coil winding machine, by copper conductor according to the turn-to-turn set away from being wrapped in epoxy axis
In the heart.
Step 2：W19 epoxy resin is selected, curing agent is prepared by proportion requirement in table 2, if curing agent is very little, epoxy
Resin can not cure, and the glass fibre then wound can not be fastened on coil, reduce coil strength；If curing agent is too many,
Then epoxy resin is just cured during coiling, influences the manufacturing process of coil.The asphalt mixtures modified by epoxy resin of curing agent will be prepared
Fat is equably applied on the conducting wire wound, due to the presence of polar hydroxyl groups and ehter bond intrinsic in epoxy molecule chain,
Make it that there is very high adhesion strength to various substances, along with the shrinkage of epoxy resin when curing is low, the internal stress of generation is small,
This also contributes to improve adhesion strength；In addition, before epoxy resin cure, due to epoxy/curative systems, there are a large amount of bands
Polarized or the low molecular compound of highly polar functional group, their electric property is all very poor at this time, with curing reaction into
Row, active group largely consume, and molecular weight gradually increases, so that three degree of cross-linked networks gradually form, in this process, they
Electrical isolation capabilities are greatly improved.Therefore the epoxy resin adhesiveness after curing is strong and dielectric properties are good, energy
It is enough to fix winding wire well and enough dielectric strengths are provided.
Step 3：After having smeared epoxy resin, further along conducting wire coiling direction and on conducting wire coiling direction uniformly
Layer of glass is wound, glass fibre is enable equably to provide mechanical strength in all directions for coil and ensures coil
Surfacing.
Step 4：It is alternately repeated step 2 and step 3 several times, number is subjected to according to specific experiment coil
Maximum electromagnetic force determines.If number is very little, insufficient strength coil spalling can be caused；If number is too many, due to glass layer
It is blocked up so that between winding wire and workpiece hypertelorism and reduce forming efficiency；5-8 times, to provide enough mechanical strengths.
Step 5：Epoxy resin is uniformly smeared on the glass fibers, ensures that glass fibre is fully adhered on conducting wire.It arrives
This layer conductor just complete by coiling.
Step 6：Step 1 is repeated to five, completes the coiling of the second layer conductor.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of device of even pressure electromagnetic device shaping, which is characterized in that including：Conductive channel (1), coil (2) and workpiece (3)；
The top that U-shaped conductive channel (1) is arranged on the coil (2) surrounds coil, and the workpiece (3) is arranged on the coil
(2) lower section, the workpiece (3) form current loop with the conductive channel (1)；
The coil (2) includes：Conducting wire (2-1), epoxy plate (2-2) and reinforcement material (2-3)；By the epoxy plate (2-2) structure
Into skeleton for the conducting wire (2-1) provide support；The reinforcement material (2-3) is arranged on conduct on the outside of the conducting wire (2-1)
External reinforcement layer, for providing enough intensity；
During work, variable-current is influenced in by coil, and workpiece forms electric current and return with having induced vortex in conductive channel
Road；The conducting wire (2-1) is the red copper wire of arbitrary cross section product；The reinforcement material (2-3) along conducting wire coiling direction and
Reinforcing is wound respectively perpendicular to conducting wire coiling direction；
When the thickness of the conducting wire (2-1) is less than the depth of penetration, conducting wire is thinner, and current density is bigger, and the electric current for sensing generation is close
Degree is also bigger, and suffered electromagnetic force is bigger on the workpiece (3), forming efficiency higher；
Wherein, the depth of penetration of the electric current in red copperF is power frequency, and μ is magnetic conductivity, and γ is electrical conductivity.
2. device as described in claim 1, which is characterized in that the cross-sectional area of the conducting wire (2-1)Wherein, Δ T be red copper wire maximum temperature rise, ρ1For the resistivity of red copper, c is specific heat capacity,
ρ2For the mass density of red copper, triseFor first rising time of coil current waveform, I (t) is coil current and the pass of time
System, t is the time.
3. such as claim 1-2 any one of them devices, which is characterized in that the reinforcement material (2-3) for glass fibre or
Bavin dragon zylon.
4. a kind of acquisition methods of uniform press coil, which is characterized in that comprise the following steps：
(1) epoxy plate is fixed on coil winding machine；
(2) using W19 epoxy resin, and epoxy curing agent is configured according to dosage phr=amine equivalents × epoxide number of amine；
Wherein, phr refers to the mass fraction of curing agent needed for every 100 parts of resins, active hydrogen in the relative molecular weight ÷ amine of amine equivalent=amine
Number, epoxide number refers to the amount of the substance of contained epoxide group in 100g epoxy resin；
(3) by red copper wire according to pre-set minimum turn-to-turn away from being wrapped on epoxy axle center；
(4) epoxy curing agent configured is applied in the red copper wire wound；
(5) after having smeared epoxy curing agent, according to maximum intensity selection reinforcement material suffered by coil during emulation, material will be reinforced
Material is along conducting wire coiling direction with uniformly winding one layer on coil respectively perpendicular to conducting wire coiling direction；And in reinforcement material
The upper uniform coiling smeared epoxy curing agent, complete one layer of red copper wire and two layers of reinforcing layer；
(6) step (3)-(5) are repeated, complete the coiling of multilayer multiturn uniform press coil.
5. acquisition methods as claimed in claim 4, which is characterized in that the reinforcement material is the S- that ultimate strength is 4.9GPa
2 glass fibres.
6. the uniform press coil that a kind of acquisition methods based on described in claim 4 obtain, including：Conducting wire (2-1), epoxy plate
(2-2) and reinforcement material (2-3)；
The skeleton being made of the epoxy plate (2-2) provides support for the conducting wire (2-1)；The reinforcement material (2-3) is set
As external reinforcement layer on the outside of the conducting wire (2-1), for providing enough intensity；The conducting wire (2-1) is arbitrary cross section
Long-pending red copper wire.
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| CN111091967B (en) * | 2018-10-24 | 2021-11-19 | 哈尔滨工业大学 | Coil curing method of magnetic focusing Hall thruster |
| CN109622722B (en) * | 2018-12-21 | 2021-01-26 | 中南大学 | Device and method capable of improving coil strength and electromagnetic forming efficiency |
| CN110102608B (en) * | 2019-05-17 | 2020-05-19 | 华中科技大学 | Forming device and method for high-precision U-shaped bending of sheet material |
| CN111468589B (en) * | 2020-04-13 | 2020-12-15 | 三峡大学 | Workpiece flanging analysis and control method for separating radial and axial electromagnetic forces |
| CN112792203B (en) * | 2020-12-23 | 2021-11-09 | 华中科技大学 | Axial reinforcement method and device for electromagnetic forming coil |
| CN113325351B (en) * | 2021-05-06 | 2022-04-08 | 华中科技大学 | High-uniformity pulse high-intensity magnetic field generating device and method |
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