CN107891220A - A kind of dissimilar material joining device based on same lateral electrode - Google Patents
A kind of dissimilar material joining device based on same lateral electrode Download PDFInfo
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- CN107891220A CN107891220A CN201710936455.8A CN201710936455A CN107891220A CN 107891220 A CN107891220 A CN 107891220A CN 201710936455 A CN201710936455 A CN 201710936455A CN 107891220 A CN107891220 A CN 107891220A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/20—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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Abstract
A kind of dissimilar material joining device based on same lateral electrode, belongs to technical field of dissimilar material connection.Including pressure head, power supply, auxiliary electrode, working electrode, electric conductor and connector etc.；Auxiliary electrode and working electrode are connected by electric conductor with power supply, and auxiliary electrode is located at the homonymy of lower sample with working electrode, and connector is between upper sample and pressure head；The fusing point T of connector8Higher than upper sample fusing point T6, i.e. T8>T6；Solder joint strength of joint meets F87>F67；Apply pressure N between working electrode and pressure head；Electric current I is pierced through in power supply output1, the upper sample partly extruded enters in the groove of steel connector after steel connector pierces through examination；Power supply exports welding current I by the loop between working electrode and auxiliary electrode2, realize and weld and formed nugget.Advantage is, effectively realizes the resistance spot welding connection of foreign material, simple to operate, cost is cheap.
Description
Technical field
The invention belongs to technical field of dissimilar material connection, more particularly to a kind of dissimilar material joining based on same lateral electrode
Device.The dissimilar metal for being not easy to weld suitable for connection prior welding mode, joint has higher intensity, and can effectively avoid
Shrinkage cavity and shrinkage defect.
Background technology
Resistance spot welding is a kind of important material joining methods, is widely used in automobile and other industries.Its welding process is
Realize under pressure, by external force welded piece must be in close contact during welding, welding current is discharged by workpiece
Resistance heat realizes welding.
Upper sample and lower sample are placed in the Top electrode of resistance spot welding equipment with by traditional resistor spot welding generally use
Between electrode, wherein Top electrode is connected by electric conductor with power supply respectively with bottom electrode.By between the upper and lower electrodes
Apply pressure, upper sample and lower sample clamped, then by electric power outputting current, electric current by Top electrode, upper sample,
Lower sample, bottom electrode.According to Joule's law, heat is produced between upper sample and lower sample, nugget is ultimately formed, makes
Obtain and metallurgical binding is formed between upper sample and lower sample, reach the purpose of connection.
The above method is widely used in the connection of same material, especially ferrous materials.In recent years, with light weight
Change the application of material, the connection requirement of foreign material increasingly increases, and traditional resistance spot welding method does not adapt to foreign material company
The demand connect.Main cause is：Physics and chemical characteristic are widely different between different materials, and are easily sent out between different materials
Biochemical reaction generation brittlement phase, causes bonding strength insufficient.For example in the resistance spot welding of steel and aluminium, just encounter very big
Problem, it is mainly manifested in：Solid solubility between steel and aluminium alloy is relatively low, physical property differs greatly.The fusing point of steel compares aluminium alloy
Fusing point it is high, in welding process, when aluminium alloy be completely melt for liquid when, steel is still in solid-state.Aluminium alloy and steel are in spot welding
When brittle intermetallic compound can be generated at linkage interface, directly affect the performance of joint,；Solidified Process of Aluminum Alloys
In be also easy to produce shrinkage cavity and shrinkage defect.
The content of the invention
It is an object of the invention to provide a kind of dissimilar material joining device based on same lateral electrode, solves conventional apparatus
It is low in the big storeroom weld strength of physics and chemical property difference, it is difficult to the problem of realizing effectively connection.
A kind of dissimilar material joining device based on same lateral electrode, including pressure head 1, power supply 2, auxiliary electrode 3, working electrode
4th, electric conductor 5, upper sample 6, lower sample 7 and connector 8.Auxiliary electrode 3 and working electrode 4 pass through electric conductor 5 and power supply 2
It is connected, auxiliary electrode 3 is in contact with lower sample 7, and lower sample 7 is between working electrode 4 and pressure head 1, upper sample 6
Between lower sample 7 and pressure head 1, connector 8 is between upper sample 6 and pressure head 1；
Auxiliary electrode 3 is located at the homonymy of lower sample 7 with working electrode 4；
Upper sample 6, lower sample 7 and connector 8 are conductive material；
Connector 8 is made up of shaft end and boss end；Shaft end is in contact to have tip or taper with upper sample 6；Boss end
There is the groove to cave inward at the position contacted with shaft end.
The fusing point T of connector 88The fusing point T for the upper sample 6 being higher than6, i.e. T8>T6。
The fusing point T of lower sample 77Higher than the fusing point T of upper sample 66, i.e. T7>T6。
Connector 8 carries out resistance spot welding with lower sample 7, and the Joint Strength of acquisition is F87, upper sample 6 and lower sample
7 carry out resistance spot welding, and solder joint strength of joint is F67, meet F87>F67；That is the resistance spot welding performance of connector 8 and lower sample 7
Resistance spot welding performance between the upper sample 6 and lower sample 7 that are better than.
A kind of application method of the dissimilar material joining device based on same lateral electrode, is comprised the following steps that：
1st, pressure head 1 and working electrode 4 are in open mode, and lower sample is sequentially placed between working electrode 4 and pressure head 1
7 and upper sample 6；
2nd, connector 8 is placed on upper sample 6, the lower section of pressure head 1；
3rd, one in mobile working electrode 4 or pressure head 1 or all, makes pressure head 1 be in contact with connector 8, is working
Apply pressure N between electrode 4 and pressure head 1；
4th, switching on power before 2, it is ensured that auxiliary electrode 3 has good contact with lower sample 7；
5th, exported by power supply 2 and pierce through electric current I1, the rise of the temperature of upper sample 6, soften；
6th, connector 8 pierces through upper sample 6；
7th, power supply 2 exports welding current I by the loop between working electrode 4 and auxiliary electrode 32, realize connector 8 with
The welding of lower sample 7；
8th, stop output current, maintain the pressure between pressure head 1 and working electrode 4；
9th, pressure head 1 and working electrode 4 are lifted, the position returned in step 1, and completion is once welded.
The process that connector 8 pierces through sample pushes realization by pressure head 1 with follower link 8, or is driven and connected by pressure head 1
Part 8 pushes and rotates realization；When pushed by pressure head 1 with follower link 8 and rotate realize when, the shaft end of connector 8 is designed with spiral shell
There is flight at line structure, boss end；The end of pressure head 1 has the head dummy to match with the flight of connector 8；
Pierce through electric current I1By being turned between working electrode 4 and pressure head 1, or by between working electrode 4 and auxiliary electrode 3
Conducting；
Pad 10, contactless between pad 10 and auxiliary electrode 3, pad are added between lower sample 7 and working electrode 4
10 be conductive material；Now, in the step 1 of present apparatus application method, pad is sequentially placed between working electrode 4, pressure head 1
10th, lower sample 7 and upper sample 6；In the step 7 of present apparatus application method, realize connector 8 and pad 10 between the two or
Welding between person's connector 8 and lower sample 7, the three of pad 10.
The advantage of the invention is that：The resistance spot welding connection of foreign material is effectively realized, solves thing between different materials
Reason and chemical characteristic difference are big, and chemical reaction generation brittlement phase, the problem of causing bonding strength deficiency easily occurs.Meanwhile avoid
In welding process caused by the fusing of low melting material the defects of shrinkage cavity and porosity.
Brief description of the drawings
Fig. 1 is the dissimilar material joining schematic diagram of embodiment one of the present apparatus.Wherein, pressure head 1, power supply 2, auxiliary electrode 3,
Working electrode 4, electric conductor 5, upper sample 6, lower sample 7, connector 8, nugget 11.
Fig. 2 is the dissimilar material joining schematic diagram of embodiment two of the present apparatus.Wherein, pressure head 1, power supply 2, auxiliary electrode 3,
Working electrode 4, electric conductor 5, upper sample 6, lower sample 7, connector 8, pad 10, nugget 11.
Fig. 3 is in the embodiment of the present apparatus, pierces through electric current I1The schematic diagram passed through between working electrode 4 and pressure head 1.Its
In, pressure head 1, power supply 2, auxiliary electrode 3, working electrode 4, electric conductor 5, upper sample 6, lower sample 7, connector 8, in figure
Arrow is designated as piercing through electric current I1Guiding path.
Fig. 4 is in the embodiment of the present apparatus, pierces through electric current I1The signal passed through between working electrode 4 and auxiliary electrode 4
Figure.Wherein, pressure head 1, power supply 2, auxiliary electrode 3, working electrode 4, electric conductor 5, upper sample 6, lower sample 7, connector 8,
Arrow is designated as piercing through electric current I in figure1Guiding path.
Fig. 5 is that pressure head 1 pushes schematic diagram by rotation mode in the embodiment of the present apparatus.Wherein, pressure head 1, power supply 2,
Auxiliary electrode 3, working electrode 4, electric conductor 5, upper sample 6, lower sample 7, connector 8.
Embodiment
Embodiment 1
A kind of dissimilar material joining device and its application method such as Fig. 1 based on same lateral electrode described in the embodiment of the present invention
It is shown.
A kind of dissimilar material joining device based on same lateral electrode, including pressure head 1, power supply 2, auxiliary electrode 3, working electrode
4th, electric conductor 5, upper sample 6, lower sample 7 and connector 8.Auxiliary electrode 3, working electrode 4 pass through electric conductor 5 and power supply 2
It is connected, auxiliary electrode 3 is in contact with lower sample 7, and lower sample 7 is between working electrode 4 and pressure head 1, upper sample 6
Between lower sample 7 and pressure head 1, connector 8 is between upper sample 6 and pressure head 1.
Auxiliary electrode 3 is located at the homonymy of lower sample 7 with working electrode 4；
Connector 8, upper sample 6, lower sample 7 are conductive material；Wherein, upper sample 6 is the 5 of thickness 1.5mm
Line aluminium alloy material, lower sample 7 are thickness 1.5mm 300Mpa low-carbon steel materials, and connector 8 is 800MPa steel materials,
Auxiliary electrode 3, working electrode 4 are chromium-zirconium-copper material.
Steel connector 8 is made up of shaft end and boss end, and shaft end is in contact with upper sample 6, is tip diameter 2mm, root
Portion diameter 4mm taper；The other end of steel connector 8 is diameter 8mm boss end.The boss end of steel connector 8 and axle
There are the groove to cave inward, depth of groove 0.3mm in the position of end in contact.
The fusing point T of steel connector 88Higher than the fusing point T of the upper sample 6 of 5 line aluminium alloy materials6, i.e. T8>T6。
The fusing point T of the lower sample 7 of low-carbon steel material7Higher than the fusing point T of the upper sample 6 of 5 line aluminium alloy materials6, i.e. T7
>T6。
The resistance spot welding performance of steel connector 8 and the lower sample 7 of low-carbon steel material is upper better than 5 line aluminium alloy materials
Resistance spot welding performance between the lower sample 7 of layer sample 6 and low-carbon steel material.I.e. under steel connector 8 and low-carbon steel material
Layer sample 7 carries out resistance spot welding, and the Joint Strength of acquisition is F87, upper sample 6 and the low-carbon steel material of 5 line aluminium alloy materials
Lower sample 7 carries out resistance spot welding, and the solder joint strength of joint of acquisition is F67, meet F87>F67。
The application method of the present embodiment described device, is comprised the following steps that：
1st, pressure head 1, working electrode 4 are in open mode, and low-carbon steel material is sequentially placed between working electrode 4, pressure head 1
The line aluminium alloy material of lower sample 7 and 5 upper sample 6.
2nd, steel connector 8 is placed on the upper sample 6 of 5 line aluminium alloy materials, the lower section of pressure head 1.
3rd, one in mobile working electrode 4 or pressure head 1 or all, makes pressure head 1 be in contact with steel connector 8,
Apply pressure N between working electrode 4 and pressure head 1.
4th, switching on power before 2, it is ensured that the lower sample 7 of auxiliary electrode 3 and low-carbon steel material has good contact.
5th, exported by power supply 2 and pierce through electric current I1, the temperature of upper sample 6 rise of 5 line aluminium alloy materials, soften.
6th, steel connector 8 pierces through the upper sample 6 of 5 line aluminium alloy materials, is pierced into the lower sample 7 of low-carbon steel material
In, until the boss of steel connector 8 contacts with the upper sample 6 of 5 line aluminium alloy materials, 5 line aluminium alloy materials of part extrusion
The upper sample 6 of material enters in the groove of steel connector 8.
7th, power supply 2 exports welding current I by the loop between working electrode 4 and auxiliary electrode 32, realize that steel connects
The welding of part 8 and the lower sample 7 of low-carbon steel material, form nugget 11.
8th, stop output current, maintain the pressure between pressure head 1 and working electrode 4.
9th, pressure head 1 and working electrode 4 are lifted, the position returned in step 1, and completion is once welded.
Because auxiliary electrode 3 and working electrode 4 are located at the homonymy of the lower sample 7 of low-carbon steel material, 5 line aluminium alloy materials
In the connection procedure of lower sample 7 of upper sample 6 and low-carbon steel material, the upper sample 6 of 5 line aluminium alloy materials does not occur all the time
Acutely fusing, can effectively reduce weld defect.
I is only used in the present embodiment1、I2Characterize and pierce through electric current and welding current, but be not intended to limit I1、I2For steady state value.Pierce
Wear electric current I1, welding current I2Form include but is not limited to following types：DC current, alternating current, pulse current, gradually
Increased electric current, the electric current being gradually reduced, the electric current etc. of different wave.
The pressure in connection procedure only is characterized with N in the present embodiment, can be change in the different phase N values of connection.
Embodiment 2
Dissimilar material joining device and its application method described in the embodiment of the present invention is as shown in Figure 2.
In the present embodiment, the attachment means of foreign material, including pressure head 1, power supply 2, auxiliary electrode 3, working electrode 4, lead
Electric body 5, upper sample 6, lower sample 7, connector 8 and pad 10.Auxiliary electrode 3, working electrode 4 pass through electric conductor 5 and electricity
Source 2 is connected, and auxiliary electrode 3 is in contact with lower sample 7, and lower sample 7 is between working electrode 4 and pressure head 1, upper strata examination
Sample 6 is between lower sample 7 and pressure head 1, and for connector 8 between upper sample 6 and pressure head 1, pad 10 is located at work electricity
Without directly contacting between pole 4 and lower sample 7 and with auxiliary electrode 3, nugget 11 is between connector 8 and pad 10 or even
Between fitting 8, lower sample 7, the three of pad 10.
Auxiliary electrode 3 is located at the homonymy of lower sample 7 with working electrode 4；
Connector 8, upper sample 6, lower sample 7 and pad 10 are conductive material；Wherein, upper sample 6 is thickness
1.5mm 5 line aluminium alloy materials, lower sample 7 are thickness 1.5mm 300Mpa low-carbon steel materials, and connector 8 is 800MPa steel
Material, pad 10 are diameter 6mm, thickness 1mm 300MPa low-carbon steel materials, and auxiliary electrode 3, working electrode 4 are chromium zirconium
Copper product.
Steel connector 8 is made up of shaft end and boss end, and shaft end is in contact with upper sample 6, tip diameter 2mm, root
Diameter 4mm taper；The other end of steel connector 8 is diameter 8mm boss end.The boss end of steel connector 8 and shaft end
The position of contact is designed with the groove to cave inward, depth of groove 0.3mm.
The fusing point T of steel connector 88Higher than the fusing point T of the upper sample 6 of 5 line aluminium alloy materials6, i.e. T8>T6。
The fusing point T of the lower sample 7 of low-carbon steel material7Higher than the fusing point T of the upper sample 6 of 5 line aluminium alloy materials6, i.e. T7
>T6。
The fusing point T of the pad 10 of low-carbon steel material10Higher than the fusing point T of the upper sample 6 of 5 line aluminium alloy materials6, i.e. T10>
T6。
The resistance spot welding performance of steel connector 8 and the lower sample 7 of low-carbon steel material is upper better than 5 line aluminium alloy materials
Resistance spot welding performance between the lower sample 7 of layer sample 6 and low-carbon steel material.I.e. under steel connector 8 and low-carbon steel material
Layer sample 7 carries out resistance spot welding, and the Joint Strength of acquisition is F87, upper sample 6 and the low-carbon steel material of 5 line aluminium alloy materials
Lower sample 7 carries out resistance spot welding, and the solder joint strength of joint of acquisition is F67, meet F87>F67。
The resistance spot welding performance of steel connector 8 and the pad 10 of low-carbon steel material is better than the upper strata of 5 line aluminium alloy materials
Resistance spot welding performance between the lower sample 7 of sample 6 and low-carbon steel material.That is the pad of steel connector 8 and low-carbon steel material
10 carry out resistance spot welding, and the Joint Strength of acquisition is F810, the upper sample 6 of 5 line aluminium alloy materials and the lower floor of low-carbon steel material
Sample 7 carries out resistance spot welding, and the solder joint strength of joint of acquisition is F67, meet F810>F67。
The application method of the present embodiment described device, is comprised the following steps that：
1st, pressure head 1, working electrode 4 are in open mode, and low-carbon steel material is sequentially placed between working electrode 4, pressure head 1
Pad 10, low-carbon steel material the line aluminium alloy material of lower sample 7 and 5 upper sample 6.
2nd, steel connector 8 is placed on the upper sample 6 of 5 line aluminium alloy materials, the lower section of pressure head 1.
3rd, one in mobile working electrode 4 or pressure head 1 or all, makes pressure head 1 be in contact with steel connector 8,
Apply pressure N between working electrode 4 and pressure head 1.
4th, switching on power before 2, it is ensured that the lower sample 7 of auxiliary electrode 3 and low-carbon steel material has good contact.
5th, exported by power supply 2 and pierce through electric current I1So that the pad 10 of low-carbon steel material and the lower sample 7 of low-carbon steel material
Temperature raises, and is raised, softened, now 5 line aluminium alloy material by the temperature of upper sample 6 of the line aluminium alloy material of heat transfer 5
The temperature of the upper sample 6 of material is less than the temperature of the lower sample 7 of low-carbon steel material.
6th, steel connector 8 pierces through the upper sample 6 of 5 line aluminium alloy materials, is pierced into the lower sample 7 of low-carbon steel material
In, until the boss of steel connector 8 contacts with the upper sample 6 of 5 line aluminium alloy materials, 5 line aluminium alloy materials of part extrusion
The upper sample 6 of material enters in the groove of steel connector 8.
7th, power supply 2 exports welding current I by the loop between working electrode 4 and auxiliary electrode 32, realize that steel connects
The pad 10 of part 8 and low-carbon steel material between the two or steel connector 8 and low-carbon steel material lower sample 7, mild steel
Welded between the three of pad 10 of material, form nugget 11.
8th, stop output current, maintain the pressure between pressure head 1 and working electrode 4.
9th, pressure head 1 and working electrode 4 are lifted, the position returned in step 1, and completion is once welded.
Because auxiliary electrode 3 and working electrode 4 are located at the homonymy of the lower sample 7 of low-carbon steel material, 5 line aluminium alloy materials
In the connection procedure of lower sample 7 of upper sample 6 and low-carbon steel material, the upper sample 6 of 5 line aluminium alloy materials does not occur all the time
Acutely fusing, can effectively reduce weld defect.
The presence of pad 10 so that heat distribution is more reasonable, so as to improve the service life of working electrode 4.
I is only used in the present embodiment1、I2Characterize and pierce through electric current and welding current, but be not intended to limit I1、I2For steady state value.Pierce
Wear electric current I1, welding current I2Form include but is not limited to following types：DC current, alternating current, pulse current, gradually
Increased electric current, the electric current being gradually reduced, the electric current etc. of different wave.
The pressure in connection procedure only is characterized with N in the present embodiment, can be change in the different phase N values of connection.
Example 1 and Example 2 of the present invention, in step 5, electric current I is pierced through in the output of power supply 21, upper sample 6 occurs soft
During change, electric current I is pierced through1Both can be by being turned between working electrode 4 and pressure head 1, as shown in Figure 3；It can also pass through
Turned between working electrode 4 and auxiliary electrode 3, as shown in Figure 4.As puncture electric current I1By being led between working electrode 4 and pressure head 1
When logical, auxiliary electrode 3 is in off state, when passing through welding current I between auxiliary electrode 3 and working electrode 42When, pressure head 1
It is in off state, i.e., conductive when pressure head 1 is different from auxiliary electrode 3.
Example 1 and Example 2 of the present invention, in step 6, connector 8 pierces through the process of upper sample 6, can both pass through
Pressure head 1 pushes realization with follower link 8；It can also be pushed by pressure head 1 with follower link 8 and rotate realization, as shown in Figure 5.
When pushed by pressure head 1 with follower link 8 and rotate realize when, the shaft end of connector 8 is designed with helicitic texture, and there is screw at boss end
Groove；The end of pressure head 1 has the head dummy to match with the flight of connector 8.
The selection of present invention process parameter and upper sample 6, lower sample 7, the material of pad 10 and thickness and it is connected
The material of part 8 is closely related with geometry.It is as follows for material described in the embodiment of the present invention and the Joining Technology of specification, parameter
Shown in table：
Claims (9)
1. a kind of dissimilar material joining device based on same lateral electrode, it is characterised in that including pressure head (1), power supply (2), auxiliary
Electrode (3), working electrode (4), electric conductor (5), upper sample (6), lower sample (7) and connector (8)；Auxiliary electrode (3)
It is connected with working electrode (4) by electric conductor (5) with power supply (2), auxiliary electrode (3) is in contact with lower sample (7), lower floor
Sample (7) is located between working electrode (4) and pressure head (1), and upper sample (6) is located between lower sample (7) and pressure head (1),
Connector (8) is located between upper sample (6) and pressure head (1).
2. device according to claim 1, it is characterised in that under described auxiliary electrode (3) is located at working electrode (4)
The homonymy of layer sample (7).
3. device according to claim 1, it is characterised in that described upper sample (6), lower sample (7) and connection
Part (8) is conductive material.
4. device according to claim 1, it is characterised in that described connector (8) is made up of shaft end and boss end；Axle
Hold to there is tip or taper, shaft end to be in contact with upper sample (6)；The position that boss end contacts with shaft end have cave inward it is recessed
Groove.
5. device according to claim 1, it is characterised in that the fusing point T of described connector (8)8The upper sample being higher than
(6) fusing point T6, i.e. T8>T6；The fusing point T of lower sample (7)7Higher than the fusing point T of upper sample (6)6, i.e. T7>T6；Connector
(8) resistance spot welding is carried out with lower sample (7), solder joint strength of joint is F87, upper sample (6) carries out electric with lower sample (7)
Spot welding is hindered, the solder joint strength of joint of acquisition is F67, meet F87>F67。
6. device according to claim 1, it is characterised in that the device operating procedure is as follows：
1) pressure head (1) and working electrode (4) are in open mode, and lower floor is sequentially placed between working electrode (4) and pressure head (1)
Sample (7) and upper sample (6)；
2) connector (8) is placed on upper sample (6), the lower section of pressure head (1)；
3) one in mobile working electrode (4) or pressure head (1) or all, makes pressure head (1) be in contact with connector (8),
Apply pressure N between working electrode (4) and pressure head (1)；
4) switching on power before (2), it is ensured that auxiliary electrode (3) has good contact with lower sample (7)；
5) exported by power supply (2) and pierce through electric current I1, the rise of upper sample (6) temperature, soften；
6) connector (8) pierces through upper sample (6)；
7) power supply (2) exports welding current I by the loop between working electrode (4) and auxiliary electrode (3)2, realize connector
(8) with the welding of lower sample (7)；
8) stop output current, maintain the pressure between pressure head (1) and working electrode (4)；
9) pressure head (1) and working electrode (4) are lifted, the position returned in step 1, and completion is once welded.
7. device according to claim 6, it is characterised in that the process that described connector (8) pierces through sample passes through pressure
Head (1) band follower link (8) pushes realization, or is pushed by pressure head (1) band follower link (8) and rotate realization；Pressed when passing through
Head (1) band follower link (8) is pushed and rotated when realizing, connector (8) shaft end is designed with helicitic texture, and there is screw at boss end
Groove；Pressure head (1) end has the head dummy to match with connector (8) flight.
8. device according to claim 6, it is characterised in that described puncture electric current I1Pass through working electrode (4) and pressure head
(1) turned between, or by being turned between working electrode (4) and auxiliary electrode (3).
9. device according to claim 6, it is characterised in that described between lower sample (7) and working electrode (4)
Pad (10) is added, pad (10) is conductive material, contactless between pad (10) and auxiliary electrode (3)；Now, the present apparatus makes
In step 1) with method, pad (10), lower sample (7) and upper strata are sequentially placed between working electrode (4), pressure head (1)
Sample (6)；In the step 7) of present apparatus application method, realize connector (8) and pad (10) between the two or connector (8)
With the welding between lower sample (7), pad (10) three.
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| CN109396627A (en) * | 2018-09-26 | 2019-03-01 | 首钢集团有限公司 | Dissimilar material joining device and connection method |
| CN110125525A (en) * | 2018-02-09 | 2019-08-16 | 丰田自动车株式会社 | The joint method of dissimilar metal plate |
| CN111250992A (en) * | 2020-02-25 | 2020-06-09 | 吉利汽车研究院（宁波）有限公司 | Conductive auxiliary member, dissimilar material joining apparatus, and dissimilar material joining method |
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| CN110125525A (en) * | 2018-02-09 | 2019-08-16 | 丰田自动车株式会社 | The joint method of dissimilar metal plate |
| CN110125525B (en) * | 2018-02-09 | 2022-01-14 | 丰田自动车株式会社 | Method for joining dissimilar metal plates |
| CN109396627A (en) * | 2018-09-26 | 2019-03-01 | 首钢集团有限公司 | Dissimilar material joining device and connection method |
| CN111250992A (en) * | 2020-02-25 | 2020-06-09 | 吉利汽车研究院（宁波）有限公司 | Conductive auxiliary member, dissimilar material joining apparatus, and dissimilar material joining method |
| CN111250992B (en) * | 2020-02-25 | 2021-08-10 | 吉利汽车研究院（宁波）有限公司 | Conductive auxiliary member, dissimilar material joining apparatus, and dissimilar material joining method |
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| CN107891220B (en) | 2019-12-31 |
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