CN108043976A - A kind of different metal materials preform high speed impact Joining Technology - Google Patents
A kind of different metal materials preform high speed impact Joining Technology Download PDFInfo
- Publication number
- CN108043976A CN108043976A CN201711465563.8A CN201711465563A CN108043976A CN 108043976 A CN108043976 A CN 108043976A CN 201711465563 A CN201711465563 A CN 201711465563A CN 108043976 A CN108043976 A CN 108043976A
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- China
- Prior art keywords
- high speed
- plate
- target plate
- discharge
- aluminium foil
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Classifications
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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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/026—Reinforcing the connection by locally deforming
Abstract
The invention discloses a kind of different metal materials preform high speed impact Joining Technologies, include the following steps：Step 1, capacitor, which charge, using controller is followed by energization magnetic forming coil, by electromagnetic force target plate preform material is made to go out solder joint convex closure；Step 2 discharges to aluminium foil after charging again to capacitor, by discharge-induced explosion winged plate impact connection target plate is driven to form solder joint after the explosion of aluminium foil center.The method that the technology utilization electromagnetic percussion preform is combined with discharge-induced explosion impact connection, realizes the connection between different metal materials, efficiently solves the connection problem between the high-strength lightweighting materials of xenogenesis, have good prospects for commercial application.
Description
Technical field
The invention belongs to technical field of metal material, are related to dissimilar metal sheet interconnection technique, and in particular to a kind of xenogenesis
Metal material preform high speed impact Joining Technology, is mainly used between high-strength steel and aluminium alloy plate or the high-strength aluminium of xenogenesis closes
Connection between golden plate.
Background technology
With the continuous development of science and technology, in technical field of metal material, the lightweight of material has become a kind of development and becomes
Gesture, for using automobile and aerospace industry as the large enterprise of representative, lightweighting materials can be saved largely
Production cost.Using high-strength steel, aluminium alloy, magnesium alloy and titanium alloy as representative, these materials generally have these lightweighting materials
There are lightweight, the characteristic of high intensity, but the thing followed is the difficult shaping of these materials.It shapes since these materials are difficult, directly leads
Cause the connection between dissimilar material very problematic.Connectivity problem between dissimilar material also becomes more material bodies structure designs and system
One of key issue made.
For now, the method for common different-metal material welding has diffusion welding (DW), friction welding (FW) and welding-braze etc., above-mentioned side
Method has the following disadvantages：There are larger heat affected area, high temperature generation Intermetallic compound is more, strength of joint is not high, less economical
Deng.In addition, magnetic pulse welding, discharge-induced explosion impact Joining Technology can be such that different metal materials effectively weld, but these works
Skill has some limitations in application.Coil strength deficiency is easy to cause coil failure during magnetic pulse welding；Discharge-induced explosion rushes
Certain distance must be kept when hitting connection between plate to reach impact velocity, and isolation junction must be increased between welded blank
Structure reduces the flexibility of technological design.
The content of the invention
For the above-mentioned problems in the prior art, the present invention provides a kind of different metal materials preform high-speed punchings
Joining Technology is hit, the method which is combined with discharge-induced explosion impact connection realizes xenogenesis
Connection between metal material efficiently solves the connection problem between the high-strength lightweighting materials of xenogenesis, has good industry
Application prospect.
For this purpose, present invention employs following technical schemes：
A kind of different metal materials preform high speed impact Joining Technology, includes the following steps：
Step 1, capacitor, which charge, using controller is followed by energization magnetic forming coil, makes target plate by electromagnetic force
Preform material goes out solder joint convex closure；
Step 2 discharges to aluminium foil after charging again to capacitor, is driven after the explosion of aluminium foil center by discharge-induced explosion and flies plate
Impact connection target plate forms solder joint.
Further, the step 1 specifically includes procedure below：
Soldered target plate is fixed in lower die by the first step, and electro-magnetic forming coil is fixed on upper mold by insulating materials
On, electro-magnetic forming coil and insulation board are pressed on target plate, coil the two poles of the earth are by cable connection in storage capacitor C discharge loops
The two poles of the earth are closed upper and lower mould；
Second step charges to storage capacitor C, and after charging voltage reaches setting preform voltage 1-5KV, disconnection is filled
Electrical circuit；
3rd step is closed vacuum switch K, turns on discharge loop, and storage capacitor C puts electro-magnetic forming coil by cable
Electricity, target plate generate high speed plastic deformation under the action of electromagnetic force, form a bulging convex closure.
Further, the step 2 specifically includes procedure below：
The first step opens upper and lower mould, flies welding on target plate and lower die after plate is placed on by weld locations preform；
Second step is placed on after discharge-induced explosion aluminium foil is coated insulating cement on the winged plate of welding, explosion center alignment bulging convex closure
Center；
Upper mold and electro-magnetic forming coil are pressed on discharge-induced explosion aluminium foil both ends, the positive negative electricity of electro-magnetic forming coil by the 3rd step
Pole keeps good contact with discharge-induced explosion aluminium foil both ends；
4th step charges to storage capacitor C, and after charging voltage reaches setting weldingvoltage 1-8KV, disconnection is charged back
Road；
5th step is closed vacuum switch K, turns on discharge loop, and storage capacitor C passes through cable and electro-magnetic forming coil the two poles of the earth
It discharges aluminium foil, aluminium foil central point explodes under Impulsive Current effect and generates high speed impact power, promotes to fly plate plastic deformation；
Fly at plate high speed impact target plate convex closure and connect to form solder joint.
Further, the difficult molding metallic material of the material of the target plate, including aerospace aluminium alloy, car aluminum
The poor metal material of forming property, the thickness under quasi-static force effect such as alloy, high strength steel, titanium alloy, magnesium alloy are
1.0~3.0mm.
Further, the material of the winged plate is the metal material different from target plate, including aluminium alloy, copper alloy, carbon steel
It is 0.5~4.0mm Deng, thickness.
Further, the thickness of the discharge-induced explosion aluminium foil is 0.03~0.15mm.
As a kind of preferred embodiment, a diameter of 5~20mm of connection welding of the winged plate and target plate.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) a kind of abnormal metal material joining methods are proposed, particularly between aluminium alloy and difficult molding metallic material
Spot welding method.
(2) the connection problem between the high-strength lightweighting materials of xenogenesis is efficiently solved, there is good prospects for commercial application.
(3) speed of welding is fast, and welding performance is good.
(4) discharge capacity is same device in welding equipment, and preform is same mold with weld mold, improves device
Service efficiency, reduce cost.
Description of the drawings
Fig. 1 is target plate preform in a kind of different metal materials preform high speed impact Joining Technology provided by the present invention
Technology and pattern assembly schematic diagram.
Fig. 2 is to fly plate and target plate in a kind of different metal materials preform high speed impact Joining Technology provided by the present invention
Joining Technology frock schematic diagram.
Fig. 3 is electro-magnetic forming coil schematic diagram.
Fig. 4 is discharge-induced explosion aluminium foil schematic diagram.
Reference sign：1st, target plate；2nd, lower die；3rd, electro-magnetic forming coil；4th, insulating materials；5th, upper mold；6th, insulation board；
7th, plate is flown；8th, discharge-induced explosion aluminium foil；9th, insulating cement.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
The invention discloses a kind of different metal materials preform high speed impact Joining Technologies, include the following steps：
Step 1, capacitor, which charge, using controller is followed by energization magnetic forming coil, makes target plate by electromagnetic force
Preform material goes out solder joint convex closure；
Step 2 discharges to aluminium foil after charging again to capacitor, is driven after the explosion of aluminium foil center by discharge-induced explosion and flies plate
Impact connection target plate forms solder joint.
As shown in Figure 1, the step 1 specifically includes procedure below：
Soldered target plate 1 is fixed in lower die 2 by the first step, and electro-magnetic forming coil 3 is fixed on by insulating materials 4
In upper mold 5, electro-magnetic forming coil 3 and insulation board 6 are pressed on target plate 1, coil the two poles of the earth are by cable connection in storage capacitor C
Discharge loop the two poles of the earth are closed upper and lower mould；
Second step charges to storage capacitor C, and after charging voltage reaches setting preform voltage 1-5KV, disconnection is filled
Electrical circuit；
3rd step is closed vacuum switch K, turns on discharge loop, and storage capacitor C puts electro-magnetic forming coil 3 by cable
Electricity, target plate 1 generate high speed plastic deformation under the action of electromagnetic force, form a bulging convex closure.
As shown in Fig. 2, the step 2 specifically includes procedure below：
The first step opens upper and lower mould, will weld and flies plate 7 and be placed on by weld locations the target plate 1 after preform and lower die 2
On；
Second step is placed on after discharge-induced explosion aluminium foil 8 is coated insulating cement 9 on the winged plate 7 of welding, and explosion center alignment bulging is convex
Bag center；
Upper mold 5 and electro-magnetic forming coil 3 are pressed on 8 both ends of discharge-induced explosion aluminium foil by the 3rd step, and electro-magnetic forming coil 3 is just
Negative electrode keeps good contact with 8 both ends of discharge-induced explosion aluminium foil；
4th step charges to storage capacitor C, and after charging voltage reaches setting weldingvoltage 1-8KV, disconnection is charged back
Road；
5th step is closed vacuum switch K, turns on discharge loop, and storage capacitor C passes through 3 liang of cable and electro-magnetic forming coil
It extremely discharges aluminium foil 8,8 central point of aluminium foil explodes under Impulsive Current effect and generates high speed impact power, promotes winged plate 7 moulding
Deformation；Fly at 7 high speed impact target plate of plate, 1 convex closure and connect to form solder joint.
The difficult molding metallic material of material of the target plate 1, including aerospace aluminium alloy, aluminium alloys for automobile, height
The poor metal material of forming property under quasi-static force effect such as strength steel, titanium alloy, magnesium alloy, thickness for 1.0~
3.0mm。
The material of the winged plate 7 is the metal material different from target plate, including aluminium alloy, copper alloy, carbon steel etc., thickness
For 0.5~4.0mm.
Fig. 3 be electro-magnetic forming coil 3 structure diagram, Fig. 4 be discharge-induced explosion aluminium foil 8 structure diagram, the electric detonation
The thickness of fried aluminium foil 8 is 0.03~0.15mm.
As a kind of preferred embodiment, a diameter of 5~20mm of connection welding of the winged plate 7 and target plate 1.
Embodiment
A kind of different metal materials preform high speed impact Joining Technology, includes the following steps：
(1) soldered target plate 1 is fixed in lower die 2, electro-magnetic forming coil 3 is fixed on upper mold 5 by insulating materials 4
On, electro-magnetic forming coil 3 and insulation board 6 are pressed on target plate 1, coil the two poles of the earth are discharged by cable connection in storage capacitor C
Circuit the two poles of the earth are closed upper and lower mould；
(2) charge to storage capacitor C, after charging voltage reaches setting preform voltage 1-5KV, disconnection is charged back
Road；
(3) vacuum switch K is closed, turns on discharge loop, storage capacitor C discharges to electro-magnetic forming coil 3 by cable, target
Plate 1 generates high speed plastic deformation under the action of electromagnetic force, forms a diameter of 5~20mm bulgings convex closure；
(4) upper and lower mould is opened, is flown welding on target plate 1 and lower die 2 after plate 7 is placed on by weld locations preform；
(5) it is placed on after discharge-induced explosion aluminium foil 8 being coated insulating cement 9 on the winged plate 7 of welding, in explosion center alignment bulging convex closure
The heart；
(6) upper mold 5 and electro-magnetic forming coil 3 are pressed on 8 both ends of discharge-induced explosion aluminium foil, the positive negative electricity of electro-magnetic forming coil 3
Pole keeps good contact with 8 both ends of discharge-induced explosion aluminium foil；
(7) charge to storage capacitor C, after charging voltage reaches setting weldingvoltage 1-8KV, disconnect charge circuit；
(8) vacuum switch K is closed, turns on discharge loop, storage capacitor C passes through 3 the two poles of the earth pair of cable and electro-magnetic forming coil
Aluminium foil 8 discharges, and 8 central point of aluminium foil explodes under Impulsive Current effect and generates high speed impact power, promotes to fly 7 moulding change of plate
Shape；Fly at 7 high speed impact target plate of plate, 1 convex closure and connect to form solder joint.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent substitution and improvement made within refreshing and spirit etc., should be included in protection scope of the present invention
Within.
Claims (7)
1. a kind of different metal materials preform high speed impact Joining Technology, it is characterised in that：Include the following steps：
Step 1, capacitor, which charge, using controller is followed by energization magnetic forming coil, makes target plate material by electromagnetic force
Preform goes out solder joint convex closure；
Step 2 discharges to aluminium foil after charging again to capacitor, is driven after the explosion of aluminium foil center by discharge-induced explosion and flies plate impact
It connects target plate and forms solder joint.
2. a kind of different metal materials preform high speed impact Joining Technology according to claim 1, it is characterised in that：Institute
It states step 1 and specifically includes procedure below：
Soldered target plate (1) is fixed in lower die (2) by the first step, and electro-magnetic forming coil (3) is solid by insulating materials (4)
It is scheduled in upper mold (5), electro-magnetic forming coil (3) and insulation board (6) is pressed on target plate (1), coil the two poles of the earth are connected by cable
Storage capacitor C discharge loops the two poles of the earth are connected on, are closed upper and lower mould；
Second step charges to storage capacitor C, and after charging voltage reaches setting preform voltage 1-5KV, disconnection is charged back
Road；
3rd step is closed vacuum switch K, turns on discharge loop, and storage capacitor C discharges to electro-magnetic forming coil (3) by cable,
Target plate (1) generates high speed plastic deformation under the action of electromagnetic force, forms a bulging convex closure.
3. a kind of different metal materials preform high speed impact Joining Technology according to claim 2, it is characterised in that：Institute
It states step 2 and specifically includes procedure below：
The first step opens upper and lower mould, will weld and flies plate (7) and be placed on by weld locations the target plate (1) after preform and lower die
(2) on；
Second step will be placed on welding and fly on plate (7) after discharge-induced explosion aluminium foil (8) cladding insulating cement (9), explosion center alignment bulging
Convex closure center；
Upper mold (5) and electro-magnetic forming coil (3) are pressed on discharge-induced explosion aluminium foil (8) both ends, electro-magnetic forming coil (3) by the 3rd step
Positive and negative electrode and discharge-induced explosion aluminium foil (8) both ends keep good contact；
4th step charges to storage capacitor C, after charging voltage reaches setting weldingvoltage 1-8KV, disconnects charge circuit；
5th step is closed vacuum switch K, turns on discharge loop, and storage capacitor C passes through cable and electro-magnetic forming coil (3) the two poles of the earth
It discharges aluminium foil (8), aluminium foil (8) central point explodes under Impulsive Current effect and generates high speed impact power, promotes to fly plate (7)
Plastic deformation；Fly at plate (7) high speed impact target plate (1) convex closure and connect to form solder joint.
4. a kind of different metal materials preform high speed impact Joining Technology according to claim 3, it is characterised in that：Institute
The difficult molding metallic material of material of target plate (1) is stated, including aerospace aluminium alloy, aluminium alloys for automobile, high strength steel, titanium
The poor metal material of forming property under quasi-static force effect such as alloy, magnesium alloy, thickness are 1.0~3.0mm.
5. a kind of different metal materials preform high speed impact Joining Technology according to claim 4, it is characterised in that：Institute
The material for stating winged plate (7) is the metal material different from target plate (1), including aluminium alloy, copper alloy, carbon steel etc., thickness 0.5
~4.0mm.
6. a kind of different metal materials preform high speed impact Joining Technology according to claim 5, it is characterised in that：Institute
The thickness for stating discharge-induced explosion aluminium foil (8) is 0.03~0.15mm.
7. a kind of different metal materials preform high speed impact Joining Technology according to any one of claims 1 to 6, special
Sign is：A diameter of 5~the 20mm of connection welding of the winged plate and target plate.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838575A (en) * | 2018-08-15 | 2018-11-20 | 福州大学 | A kind of dissimilar metal sheet welder and method |
| CN108856532A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of lightweight high-intensity sheet metal high speed impact rivet welding composite joint technique |
| CN109130219A (en) * | 2018-08-01 | 2019-01-04 | 武汉理工大学 | A kind of composite joint technique of sheet metal and carbon fibre composite |
| CN109798807A (en) * | 2019-03-30 | 2019-05-24 | 军鹏特种装备股份公司 | Without lead conduction target plate |
| CN110202150A (en) * | 2019-07-08 | 2019-09-06 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of heating hammering set composite |
| CN110280672A (en) * | 2019-07-11 | 2019-09-27 | 华中科技大学 | A kind of metal plate like piece connection and forming composite manufacturing method based on high speed impact |
| CN111659786A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| CN113664359A (en) * | 2021-08-24 | 2021-11-19 | 华中科技大学 | Welding device and welding method based on aluminum foil electrogenerated steam explosion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108856532A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of lightweight high-intensity sheet metal high speed impact rivet welding composite joint technique |
| CN109130219A (en) * | 2018-08-01 | 2019-01-04 | 武汉理工大学 | A kind of composite joint technique of sheet metal and carbon fibre composite |
| CN109130219B (en) * | 2018-08-01 | 2019-10-01 | 武汉理工大学 | A kind of composite joint technique of sheet metal and carbon fibre composite |
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| CN110280672A (en) * | 2019-07-11 | 2019-09-27 | 华中科技大学 | A kind of metal plate like piece connection and forming composite manufacturing method based on high speed impact |
| CN111659786A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| CN111659786B (en) * | 2020-06-12 | 2021-04-27 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| CN113664359A (en) * | 2021-08-24 | 2021-11-19 | 华中科技大学 | Welding device and welding method based on aluminum foil electrogenerated steam explosion |
| CN113664359B (en) * | 2021-08-24 | 2022-04-26 | 华中科技大学 | Welding device and welding method based on aluminum foil electrogenerated steam explosion |
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