CN111037023A - Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device - Google Patents
Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device Download PDFInfo
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- CN111037023A CN111037023A CN201911217997.5A CN201911217997A CN111037023A CN 111037023 A CN111037023 A CN 111037023A CN 201911217997 A CN201911217997 A CN 201911217997A CN 111037023 A CN111037023 A CN 111037023A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 91
- 239000010959 steel Substances 0.000 title claims abstract description 91
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 85
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000005219 brazing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910021389 graphene Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 239000000155 melt Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The application provides a vacuum magnetic conduction type aluminum steel dissimilar metal connecting device, which comprises a vacuum chamber, an electrode, a coil and a pressure device, wherein the electrode is arranged on the vacuum chamber; a heating platform for placing an aluminum block and a steel block to be connected is arranged in the vacuum chamber; the pressure device penetrates through the vacuum chamber and is positioned above the aluminum block and the steel block to be connected; the electrode is positioned on the heating platform and is in close contact with the aluminum block or the steel block to be connected; the pressure device and the electrode are respectively connected with a direct current power supply outside the vacuum chamber; the two coils are symmetrically distributed on two sides of the aluminum block and the steel block to be connected and connected with a magnetic control power supply outside the vacuum chamber, and the polarities of the coils on the same horizontal plane are opposite. The method has the advantages that the method provides micro current through a small direct current welding power supply, melts the low-temperature brazing filler metal placed on the inner side of the workpiece on the premise of not reaching the melting point of the aluminum steel, inhibits the generation of Fe-Al intermetallic compounds, and improves the mechanical property of a welding joint.
Description
Technical Field
The invention belongs to the technical field of welding, and relates to a vacuum magnetic conduction type aluminum steel dissimilar metal connecting method.
Background
Aluminum and aluminum alloy have a series of advantages of low density, high specific strength, corrosion resistance, electric conduction, heat conduction and the like, are one of the most widely applied light metals at present, and steel is a metal with better plastic toughness and high strength and is widely applied in the manufacturing industry. Along with the deterioration of global environment and the gradual and severe energy supply, the environmental protection and energy saving are more and more emphasized by various countries in the world, and the aluminum/steel structure and the composite joint thereof have the advantages of high specific strength of two materials, light weight, good heat and electricity conduction and the like, and can be widely applied to the industrial fields of automobiles, nuclear power, ships, aerospace and the like. Since the 60s in the 20 th world, foreign scholars have systematically studied the connection between aluminum and steel, and the connection relates to various methods in the multidisciplinary field, and is mainly divided into three methods of fusion welding, pressure welding and brazing according to the characteristics of welding process. However, because the physical properties of the aluminum and steel materials are different greatly and the solid solubility between the aluminum and steel materials is low, a brittle intermetallic compound of Fe-Al is easily formed in the welding process, and the performance of the joint is deteriorated. The pressure welding and brazing method has the advantages that the base material is kept in a solid state in the welding process, and meanwhile, the welding heat input can be accurately controlled, so that the joint performance is generally not limited by the thickness of the intermetallic compound, and the pressure welding and brazing method is suitable for the connection of aluminum steel materials, but the whole set of pressure welding and brazing equipment is extremely expensive, and the application of the pressure welding and brazing equipment in practical production is limited. The fusion welding method is relatively low in cost, but intermetallic compounds are inevitably formed due to overhigh temperature in the welding process. The welding and brazing method applied in recent years has achieved relatively good welding effect, but the joint has poor corrosion resistance after welding due to the fact that the joint is subjected to galvanizing treatment or other intermediate layers to inhibit the generation of intermetallic compounds, and is limited in special application. Therefore, in order to inhibit the generation of Fe-Al intermetallic compounds and reduce the welding cost, a vacuum magnetic conduction type aluminum steel dissimilar metal connection method is provided.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a vacuum magnetic conduction type aluminum steel dissimilar metal connection method, which is characterized in that a small direct current power supply is used for supplying a small current, and a low-temperature brazing filler metal placed on the inner side of a workpiece is melted on the premise of not reaching an aluminum-steel melting point, so that the generation of Fe-Al intermetallic compounds is inhibited, and the mechanical property of a welding joint is improved. The technical scheme is that the method comprises the following steps of,
a vacuum magnetic conduction type aluminum steel dissimilar metal connecting device comprises a vacuum chamber, an electrode, a coil and a pressure device; a heating platform for placing an aluminum block and a steel block to be connected is arranged in the vacuum chamber; the pressure device penetrates through the vacuum chamber and is positioned above the aluminum block and the steel block to be connected; the electrode is positioned on the heating platform and is in close contact with the aluminum block or the steel block to be connected; the pressure device and the electrode are respectively connected with a direct current power supply outside the vacuum chamber; the two coils are symmetrically distributed on two sides of the aluminum block and the steel block to be connected and connected with a magnetic control power supply outside the vacuum chamber, and the polarities of the coils on the same horizontal plane are opposite.
The coil is wound on the L-shaped magnetizer and fixed in the vacuum chamber through the clamp, and the bottom of the magnetizer is positioned on two sides of the contact surface of the aluminum block and the steel block.
The pressing device comprises a pressing head which is made of conductive materials and is positioned in the vacuum chamber.
A sealing conversion device is arranged between the vacuum chamber and the pressure device; the sealing conversion device comprises a T-shaped block, the T-shaped block is provided with a through hole, and an annular sealing gasket is arranged in the through hole; the pressure device acts on the aluminum block or the steel block to be connected through the T-shaped block.
The vacuum chamber is provided with a circuit connecting device, and the coil, the electrode and the pressure head in the vacuum chamber are respectively connected with an external magnetic control power supply and a direct current power supply through the circuit connecting device.
The adjustable range of the current of the direct current power supply is 0-50A; the magnetic control power supply can be a direct current power supply or an alternating current power supply.
Vacuum degree of the vacuum chamber is 0-0.1 × 10-3pa; the temperature of the heating platform is 0-300 ℃.
A vacuum magnetic conduction type aluminum steel dissimilar metal connection method comprises the steps of welding an aluminum block and a steel block to be connected,
(1) before welding, directly placing a steel block or an aluminum block to be connected on a heating platform;
(2) placing brazing filler metal between an aluminum block and a steel block to be connected, and then placing the brazing filler metal and the steel block on a heating platform together;
(3) pressing an aluminum block and a steel block to be connected through a pressure device, closing a vacuum valve, opening a heating platform and preheating a workpiece;
(4) starting a magnetic control power supply, starting a direct current power supply after the magnetic field is stabilized, and starting welding;
(5) and after the welding is finished, closing the heating platform, deflating after the temperature is recovered to the room temperature, lifting the pressure device, and taking down the aluminum block and the steel block which are welded together.
In the step (1), regularly distributed small holes are drilled on the surface of the connected steel block or aluminum block, or a square or rectangular regular shape is milled.
And (3) adding a mixture of graphene and the brazing filler metal in the step (2), uniformly mixing the brazing filler metal and the graphene according to a certain proportion, and placing the mixture between an aluminum block and a steel block to be connected.
The invention has the beneficial effects that:
1) crushing an oxide film on the surface of a workpiece through a pressure device, preheating the workpiece and the low-temperature brazing filler metal mixed with graphene by means of a heating platform, promoting wetting of the low-temperature brazing filler metal on the surface of the workpiece, melting the low-temperature brazing filler metal between an aluminum block and a steel block through resistance heat formed by micro current, and inhibiting generation of intermetallic compounds;
2) the current direction is crossed with the magnetic field, the motion rule of charged particles in the contact surface of the steel block and the aluminum block can be changed under the action of the magnetic field, the connection of dissimilar metals of the aluminum block and the steel block is accelerated, a high-quality welding line is obtained, the welding efficiency is greatly improved, and the welding cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic diagram of a steel block surface drilling hole;
FIG. 3 is a schematic view of surface processing of a steel block;
wherein, 1-vacuum chamber; 2-a pressure device; 21-pressure head; 3-sealing the conversion device; 4-a heating platform; 5-graphite plates; 6-an electrode; 7-a limiting block; 8-a circuit connection device; 9-a clamp; 10-a coil; 11-a magnetizer; 12-an aluminum block; 13-rigid block; 14-brazing filler metal; 15-an insulating pad; 16-support legs; 17-a magnetic control power supply; 18-direct current power supply.
Detailed Description
The techniques are further described below in conjunction with figures 1-3 and the specific embodiments to aid in understanding the present application.
As shown in fig. 1-3, a vacuum magnetic conductive aluminum steel dissimilar metal connecting device comprises a vacuum chamber 1, an electrode 6 and a pressure device 2; a heating platform 4 is arranged in the vacuum chamber 1, and a graphite plate 5 for placing an aluminum block 12 and a steel block 13 to be connected is arranged on the heating platform 4; the pressure device 2 penetrates through the vacuum chamber 1 and is positioned above the aluminum block 12 and the steel block 13 to be connected; the electrode 6 is fixed on the graphite plate 5, there are cavities in it, the aluminium block 12 or steel block 13 to be connected is fitted in the electrode 6, and contact closely with it, the pressure device 2, the electrode 6 is connected with direct current power supply 18 outside the vacuum chamber 1 separately, there are two coils 10 in the vacuum chamber 1, the coil 10 symmetric distribution is in waiting to connect the both sides of aluminium block 12 and steel block 13, the coil 10 twines on magnetizer 11, fix in the vacuum chamber 1 through the clamp 9, the coil 10 is connected with magnetic control power supply 17 outside the vacuum chamber 1, the polarity of the coil 10 on the identity horizontal plane is opposite, its setting method is two kinds: one is that the winding directions of the coils 10 are the same, and the current directions are opposite; the other is that the winding directions of the coils 10 are opposite, the current directions are the same, and the magnetic control power supply 17 adopts a direct current or alternating current power supply. The number of turns of the coil 10 is 0-500 turns, the magnetizer 11 is L-shaped, the bottom of the magnetizer is positioned at two sides of the contact surface of the aluminum block 12 or the steel block 13, and Q235 material is selected.
The vacuum chamber 1 is provided with a circuit connecting device 8, the circuit connecting device 8 is embedded in the side wall of the vacuum chamber 1, the circuit connecting device 8 and the side wall of the vacuum chamber 1 are sealed by sealant, an electrode 6 and a pressure head 21 in the vacuum chamber 1 are connected with a direct current power supply 18 through the circuit connecting device 8 by using a lead, and the current of the direct current power supply 18 can be adjusted within the range of 0-50A; the coil 10 is connected with a magnetic control power supply 17 through a circuit connecting device 8 by utilizing a cable in a water and electricity integrated mode.
The graphite plate 5 has good chemical stability and good heat conduction effect, and has a protection effect on the heating platform 4.
The bottom of the vacuum chamber 1 is provided with a supporting leg 16, and the heating platform 4 is fixed on the supporting leg 16.
The two sides of the fixed electrode 6 are provided with limit blocks 7, and the limit blocks 7 are fixed on the graphite plate 5.
The pressing device 2 comprises a driving motor, a movable shaft connected with the driving motor and a pressing head 21 fixedly connected with the movable shaft, the pressing head 21 is made of conductive materials and is positioned in the vacuum chamber 1, and an insulating pad 15 is arranged between the pressing head 21 and the movable shaft; the pressing device 2 has a pressure range of 0-30 KN.
A sealing conversion device 3 is arranged between the vacuum chamber 1 and the pressure device 2; the sealing conversion device comprises a T-shaped block, the T-shaped block is provided with a through hole, and an annular sealing gasket is arranged in the through hole; the pressure device 2 acts on the aluminum block 12 or the steel block 13 to be connected through the T-shaped block.
The vacuum degree of the vacuum chamber 1 is 0-0.1 multiplied by 10-3pa; the temperature of the heating platform is 0-300 ℃.
In the application, the positions of the aluminum block 12 or the steel block 13 can be interchanged, the shape is circular or square, the illustration 1 only shows that the aluminum block 12 is positioned on the steel block 13, the two are schematic diagrams of the square, and the thickness of the aluminum block 12 or the steel block 13 to be connected is 0.1-10 mm.
A vacuum magnetic conduction type aluminum steel dissimilar metal connection method comprises the following welding steps of an aluminum block 12 and a steel block 13 to be connected:
(1) before welding, the steel block 13 or the aluminum block 12 to be connected is directly placed on the graphite plate 5 on the heating platform 4 without polishing, and the thickness of the aluminum block 12 or the steel block 13 is 3 mm;
(2) brazing filler metal 14 is placed between the aluminum 12 and the steel 13 to be joined, together on the graphite plate 5;
(3) the aluminum block 12 and the steel block 13 to be connected are pressed tightly by the pressure device 2, and the valve of the vacuum chamber 1 is closedDegree of vacuum of 0.1X 10-2pa, opening the heating platform 4, and preheating the aluminum block 12 and the steel block 13 to be connected at the preheating temperature of 60 ℃;
(4) starting a magnetic control power supply 17, starting a direct current power supply 18 after a magnetic field is stabilized, wherein the current is 20A, the current returns to the direct current power supply 18 through a pressure head 21, the aluminum block 12 and the steel block 13 to be processed and the electrode 6, and the welding is started, wherein the welding time is 1-60s, and preferably 20 s; at the moment, the current and the magnetic field are crossed to generate Lorentz force, so that the motion rule of original ions is changed, and the welding efficiency and quality are improved; the pressure head 21 generates heat and acts on the brazing filler metal 14 together with the heating platform 4, so that the melting of the brazing filler metal 14 is further accelerated, and the welding efficiency is improved.
(5) And after the welding is finished, closing the heating platform 4, deflating after the temperature is recovered to the room temperature, lifting the pressure device 2, enabling the pressure head 21 to leave the aluminum block 12 and the steel block 13, breaking the current, taking down the aluminum block 12 and the steel block 13 which are welded together, and finishing the welding.
In the step (1), before welding, the pressure of the pressure device 2 is set to 10KN, and the oxide film between the aluminum block 12 and the steel block 13 can be broken by using the pressure head 21.
In order to increase the utilization space of the brazing filler metal 14, the connected steel block 13 or aluminum block 12 can be drilled with regularly distributed small holes on the surface by a machining mode, and can also be milled into a square or rectangular regular shape, and the schematic drawing of the machined surface of the steel block 13 is given in fig. 2 and 3.
In the step (2), a mixture of graphene and brazing filler metal 14 can be added, the brazing filler metal 14 and the graphene are uniformly mixed according to a certain proportion, and the mixture is placed between the aluminum block 12 and the steel block 13 to be connected.
The working principle is as follows:
before welding, the steel block 13 or the aluminum block 12 to be connected is directly placed on the graphite plate 5 on the heating platform 4; placing brazing filler metal 14 between the aluminum 12 and the steel 13 to be connected, pressing the aluminum block 12 and the steel block 13 to be connected tightly through a pressure head 21 on the pressure device 2, closing a valve of the vacuum chamber 1, opening the heating platform 4, and preheating the aluminum block 12 and the steel block 13 through heat conduction of the graphite plate 5; starting a magnetic control power supply 17, starting a direct current power supply 18 after the magnetic field is stabilized, and starting welding; and after the welding is finished, closing the heating platform 4, deflating after the temperature is recovered to the room temperature, lifting the pressure device 2, and taking down the aluminum block 12 and the steel block 13 which are welded together.
The apparatus and method can also be used for welding other dissimilar metals according to the same principle.
It is understood that the above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art can make variations, modifications, additions and substitutions within the spirit and scope of the present application.
Claims (10)
1. The utility model provides a different kind metal connecting device of vacuum magnetic conduction formula aluminium steel which characterized in that: comprises a vacuum chamber, an electrode, a coil and a pressure device; a heating platform for placing an aluminum block and a steel block to be connected is arranged in the vacuum chamber; the pressure device penetrates through the vacuum chamber and is positioned above the aluminum block and the steel block to be connected; the electrode is positioned on the heating platform and is in close contact with the aluminum block or the steel block to be connected; the pressure device and the electrode are respectively connected with a direct current power supply outside the vacuum chamber; the two coils are symmetrically distributed on two sides of the aluminum block and the steel block to be connected and connected with a magnetic control power supply outside the vacuum chamber, and the polarities of the two coils on the same horizontal plane are opposite.
2. The vacuum magnetic conduction type aluminum steel dissimilar metal connecting device according to claim 1, characterized in that: the coil is wound on the L-shaped magnetizer and fixed in the vacuum chamber through the clamp, and the bottoms of the magnetizers are positioned on two sides of the contact surface of the aluminum block and the steel block.
3. The vacuum magnetic conduction type aluminum steel dissimilar metal connecting device according to claim 2, characterized in that: the pressing device comprises a pressing head which is made of conductive materials and is positioned in the vacuum chamber.
4. The vacuum magnetic conduction type aluminum steel dissimilar metal connecting device according to claim 1, characterized in that: a sealing conversion device is arranged between the vacuum chamber and the pressure device; the sealing conversion device comprises a T-shaped block, the T-shaped block is provided with a through hole, and an annular sealing gasket is arranged in the through hole; the pressure device acts on the aluminum block or the steel block to be connected through the T-shaped block.
5. The vacuum magnetic conduction type aluminum steel dissimilar metal connecting device according to claim 4, characterized in that: and the coil, the electrode and the pressure head in the vacuum chamber are respectively connected with an external magnetic control power supply and a direct current power supply through the circuit connecting device.
6. The vacuum magnetic conduction type aluminum steel dissimilar metal connecting device according to claim 2, characterized in that: the adjustable range of the current of the direct current power supply is 0-50A; the magnetic control power supply can be a direct current power supply or an alternating current power supply.
7. The vacuum magnetic conduction type aluminum steel dissimilar metal connection method according to claim 1, characterized in that: the vacuum degree of the vacuum chamber is 0-0.1 multiplied by 10-3pa; the temperature of the heating platform is 0-300 ℃.
8. The vacuum magnetic conduction type aluminum steel dissimilar metal connection method according to claim 1, characterized in that: the welding step of the aluminum block and the steel block to be connected comprises the following steps,
(1) before welding, directly placing a steel block or an aluminum block to be connected on a heating platform;
(2) placing brazing filler metal between an aluminum block and a steel block to be connected, and then placing the brazing filler metal and the steel block on a heating platform together;
(3) pressing an aluminum block and a steel block to be connected through a pressure device, closing a vacuum valve, opening a heating platform and preheating a workpiece;
(4) starting a magnetic control power supply, starting a direct current power supply after the magnetic field is stabilized, and starting welding;
(5) and after the welding is finished, closing the heating platform, deflating after the temperature is recovered to the room temperature, lifting the pressure device, and taking down the aluminum block and the steel block which are welded together.
9. The vacuum magnetic conduction type aluminum steel dissimilar metal connection method according to claim 8, characterized in that: in the step (1), regularly distributed small holes are drilled on the surface of the connected steel block or aluminum block, or a square or rectangular regular shape is milled.
10. The vacuum magnetic conduction type aluminum steel dissimilar metal connection method according to claim 8, characterized in that: and (3) adding a mixture of graphene and the brazing filler metal in the step (2), uniformly mixing the brazing filler metal and the graphene according to a certain proportion, and placing the mixture between the aluminum block and the steel block to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217997.5A CN111037023A (en) | 2019-12-03 | 2019-12-03 | Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217997.5A CN111037023A (en) | 2019-12-03 | 2019-12-03 | Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device |
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| CN111037023A true CN111037023A (en) | 2020-04-21 |
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| CN201911217997.5A Pending CN111037023A (en) | 2019-12-03 | 2019-12-03 | Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134658A (en) * | 2021-05-03 | 2021-07-20 | 东北石油大学 | Non-contact electromagnetic ultrasonic auxiliary welding equipment |
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| CN103170694A (en) * | 2013-04-01 | 2013-06-26 | 太原理工大学 | Point welding technique of magnesium alloy filled with reactive powder |
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| CN109014660A (en) * | 2018-09-27 | 2018-12-18 | 华北水利水电大学 | A kind of high nitrogen steel soldering reinforcing agent of solder |
| CN212019676U (en) * | 2019-12-03 | 2020-11-27 | 威海东海船舶修造有限公司 | Vacuum magnetic conduction type aluminum steel dissimilar metal connecting device |
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2019
- 2019-12-03 CN CN201911217997.5A patent/CN111037023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844260A (en) * | 2010-05-13 | 2010-09-29 | 重庆大学 | Method and device for performing electric magnetization resistance welding-braze welding compounding on dissimilar materials |
| CN101856757A (en) * | 2010-06-10 | 2010-10-13 | 重庆理工大学 | Powder medium diffusion reaction resistance soldering method of aluminum alloy |
| CN103170694A (en) * | 2013-04-01 | 2013-06-26 | 太原理工大学 | Point welding technique of magnesium alloy filled with reactive powder |
| CN108994409A (en) * | 2018-08-30 | 2018-12-14 | 张洪涛 | A kind of radiant heating and energization resistance heating composite welding device |
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| CN113134658A (en) * | 2021-05-03 | 2021-07-20 | 东北石油大学 | Non-contact electromagnetic ultrasonic auxiliary welding equipment |
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