CN108043976B - 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
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- CN108043976B CN108043976B CN201711465563.8A CN201711465563A CN108043976B CN 108043976 B CN108043976 B CN 108043976B CN 201711465563 A CN201711465563 A CN 201711465563A CN 108043976 B CN108043976 B CN 108043976B
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- high speed
- preform
- plate
- target plate
- aluminium foil
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of different metal materials preform high speed impact Joining Technologies, include the following steps: step 1, carry out charging to capacitor using controller and are followed by energization magnetic forming coil, so that target plate preform material is gone out solder joint convex closure by electromagnetic force；Step 2 discharges to aluminium foil after charging again to capacitor, drives winged plate impact connection target plate to form solder joint by discharge-induced explosion 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 technique
With the continuous development of science and technology, in technical field of metal material, the lightweight of material has become a kind of develop and becomes
Gesture, especially for using automobile and aerospace industry as the large enterprise of representative for, 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, high-intensitive characteristic, but consequent is the forming of these material difficulties.Since these material difficulties shape, directly lead
Cause the connection between dissimilar material very problematic.Connectivity problem between dissimilar material also becomes more material bodies structure designs and system
One of critical 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 disadvantage in that 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 when magnetic pulse welding；Discharge-induced explosion punching
It must keep certain distance to reach impact velocity between plate when hitting connection, and isolation junction must be increased between welded blank
Structure reduces the flexibility of technological design.
Summary 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 combines 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, the invention adopts the following technical scheme:
A kind of different metal materials preform high speed impact Joining Technology, includes the following steps:
Step 1 carries out charging to capacitor using controller and 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 following procedure:
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 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, disconnection is charged back
Road sets preform voltage as 1-5KV；
Third step is closed vacuum switch K, and discharge loop is connected, 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 following procedure:
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 the winged plate of welding after discharge-induced explosion aluminium foil is coated insulating cement, and explosion center is directed at 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 third step
Pole keeps well contacting with discharge-induced explosion aluminium foil both ends；
4th step charges to storage capacitor C, after charging voltage reaches setting weldingvoltage, disconnects charge circuit, setting
Weldingvoltage is 1-8KV；
5th step is closed vacuum switch K, and discharge loop is connected, 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 under quasi-static force effect including alloy, high strength steel, titanium alloy, magnesium alloy is thick
Degree is 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 with a thickness of 0.5~4.0mm.
Further, the discharge-induced explosion aluminium foil with a thickness of 0.03~0.15mm.
The connection welding diameter of the winged plate and target plate is 5~20mm as a preferred method,.
Compared with prior art, the beneficial effects of the present invention are:
(1) it proposes between a kind of abnormal metal material joining methods, especially 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 and weld mold are same mold, improves device
Service efficiency, reduce costs.
Detailed description of the invention
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 tooling schematic diagram.
Fig. 3 is electro-magnetic forming coil schematic diagram.
Fig. 4 is discharge-induced explosion aluminium foil schematic diagram.
Description of symbols: 1, target plate；2, lower die；3, electro-magnetic forming coil；4, insulating materials；5, upper mold；6, insulation board；
7, fly plate；8, discharge-induced explosion aluminium foil；9, insulating cement.
Specific embodiment
With reference to the accompanying drawing 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 carries out charging to capacitor using controller and 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 following procedure:
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, disconnection is charged back
Road sets preform voltage as 1-5KV；
Third step is closed vacuum switch K, and discharge loop is connected, 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 following procedure:
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 the winged plate 7 of welding after discharge-induced explosion aluminium foil 8 is coated insulating cement 9, and it is convex that explosion center is directed at bulging
Packet center；
Upper mold 5 and electro-magnetic forming coil 3 are pressed on 8 both ends of discharge-induced explosion aluminium foil by third step, and electro-magnetic forming coil 3 is just
Negative electrode keeps well contacting with 8 both ends of discharge-induced explosion aluminium foil；
4th step charges to storage capacitor C, after charging voltage reaches setting weldingvoltage, disconnects charge circuit, setting
Weldingvoltage is 1-8KV；
5th step is closed vacuum switch K, and discharge loop is connected, and storage capacitor C passes through cable and 3 liang of 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 to fly 7 moulding of plate
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 including strength steel, titanium alloy, magnesium alloy, with a thickness of 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, with a thickness of
0.5~4.0mm.
Fig. 3 is the structural schematic diagram of electro-magnetic forming coil 3, and Fig. 4 is the structural schematic diagram of discharge-induced explosion aluminium foil 8, the electric detonation
Fried aluminium foil 8 with a thickness of 0.03~0.15mm.
The connection welding diameter of the winged plate 7 and target plate 1 is 5~20mm as a preferred method,.
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) it charges to storage capacitor C, after charging voltage reaches setting preform voltage, disconnects charge circuit, if
Determining preform voltage is 1-5KV；
(3) it is closed vacuum switch K, discharge loop is connected, 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, and one diameter of formation is 5~20mm bulging 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 the winged plate 7 of welding after discharge-induced explosion aluminium foil 8 being coated insulating cement 9, explosion center is aligned in 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 well contacting with 8 both ends of discharge-induced explosion aluminium foil；
(7) it charges to storage capacitor C, after charging voltage reaches setting weldingvoltage, disconnects charge circuit, setting welding
Voltage is 1-8KV；
(8) it is closed vacuum switch K, discharge loop is connected, 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 of plate change
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 restrict the invention, all in essence of the invention
Made any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention within mind and spirit
Within.
Claims (7)
1. a kind of different metal materials preform high speed impact Joining Technology, characterized by the following steps:
Step 1 carries out charging to capacitor using controller and 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 following procedure:
Soldered target plate (1) is fixed on lower die (2) by the first step, and electro-magnetic forming coil (3) are solid by insulating materials (4)
It is scheduled on 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
It connects at storage capacitor C discharge loop the two poles of the earth, is closed upper and lower mould；
Second step charges to storage capacitor C, after charging voltage reaches setting preform voltage, disconnects charge circuit, if
Determining preform voltage is 1-5KV；
Third step is closed vacuum switch K, and discharge loop is connected, 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 following procedure:
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 welding winged plate (7) after discharge-induced explosion aluminium foil (8) are coated insulating cement (9), and explosion center is directed at 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 third step
Positive and negative electrode and discharge-induced explosion aluminium foil (8) both ends keep well contacting；
4th step charges to storage capacitor C, after charging voltage reaches setting weldingvoltage, disconnects charge circuit, setting welding
Voltage is 1-8KV；
5th step is closed vacuum switch K, and discharge loop is connected, 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
State target plate (1) material be under quasi-static force effect the poor aerospace aluminium alloy of forming property, aluminium alloys for automobile,
High strength steel, titanium alloy, magnesium alloy, with a thickness of 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 of winged plate (7) is stated for the aluminium alloy, copper alloy, carbon steel different from target plate (1), with a thickness of 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
State discharge-induced explosion aluminium foil (8) with a thickness of 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: the connection welding diameter of the winged plate and target plate is 5~20mm.
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| CN110280672B (en) * | 2019-07-11 | 2020-08-04 | 华中科技大学 | Metal plate part connecting and forming composite manufacturing method based on high-speed impact |
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| 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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