CN105108259B - Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head - Google Patents
Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head Download PDFInfo
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- CN105108259B CN105108259B CN201510554112.6A CN201510554112A CN105108259B CN 105108259 B CN105108259 B CN 105108259B CN 201510554112 A CN201510554112 A CN 201510554112A CN 105108259 B CN105108259 B CN 105108259B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/203—Fluxing, i.e. applying flux onto surfaces
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
- B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention provides a method for compounding copper and aluminum dissimilar metals of a zinc electrolysis cathode conductive head, which is used for cleaning the welding surfaces of a copper block and an aluminum block; laying brazing filler metal on the welding surface of the aluminum block, stacking the copper block on the welding surface of the aluminum block, and enabling the welding surface of the copper block to be in contact with the brazing filler metal on the welding surface of the aluminum block to form a blank; heating to melt the brazing filler metal, stopping heating, taking out, pressurizing and air cooling; obtaining the zinc electrolysis cathode conductive head. Or friction stir welding is carried out on the brazed welding seam, and the fabrication hole of the friction stir welding is processed, so as to obtain the copper and aluminum heterogeneous metal composite zinc electrolytic cathode conductive head. The composite method can lead the metallurgical bonding area between the copper/aluminum heterogeneous metal interfaces to reach more than 95 percent. The welding seam is full and compact, has better phase corrosion force under the condition of acid gas phase, the impact resistance of the welding seam between copper and aluminum is strong, the copper contact is not easy to fall off, and the consumption of metal copper is less and is only 1/3 of the original consumption; the working condition is good, and no harmful gas or waste is discharged.
Description
Technical field
The invention belongs to electrolytic zinc technical field, is related to a kind of preparation method of zinc electrolysis cathode conducting head, more particularly to
A kind of zinc electrolysis cathode conducting head copper and aluminium dissimilar metal complex method.
Background technology
At present, casting is inlayed by copper/Al bimetal or explosion welding method makes zinc electrolysis cathode conducting head.In the presence of
Following defect：1）Copper/Al bimetal is by copper electroplating surfaces with tin, forming copper/aluminium gold in advance between inlaying the metal interface of casting
Engagement between category.Due to metallic tin low intensity, interface power is poor, and under actual working conditions, two metal interfaces are easy to crack, lead
The metallic copper for causing to be coated in aluminium is gradually corroded.2）Because the poorly conductive of metallic tin is in copper and aluminium, in big operating current
Transmission conditions, differentia influence caused by its resistivity are obvious.3）Under the effect of acid gas phase media, based on sulfate
Accumulation is formed in salt, the easily gap after copper/aluminium faying face cracking, or even copper/aluminium faying face distending can be caused tank voltage
Raised with conductive contact temperature, have a strong impact on current efficiency.4）Due to the cracking and progressive corrosion on copper/aluminium composition surface, it is conductive
Property in being gradually reduced trend.5）The factor that influence copper/Al bimetal inlays castability is more, and the uniformity of product quality is difficult to
Control.6）Not only cost is high for explosion welding method, and can realize that the ratio of metal interface metallurgical binding only has 80~90%.7）
Machinery stripping zinc method in being produced from external electrolytic zinc is different, domestic mostly using artificial stripping zinc.When electrolysis rolled tin occurs
After haftplatte, because of extensive operation, for the copper contact of simple soldering or explosive welding when by greater impact power, copper contact is easy to fall off.
If copper contact is fallen into electrolytic cell, electrolyte will be caused to deteriorate.
The content of the invention
It is an object of the invention to provide a kind of zinc electrolysis cathode conducting head copper and aluminium dissimilar metal complex method, increase different
The metallurgical binding ratio of matter metal interface, metal interface adhesion is improved, strengthen the resistance to gas phase corrosivity of copper/aluminium transition zone, drop
Low contact resistance and unit dc consumption.
To achieve the above object, the technical solution adopted in the present invention is：A kind of zinc electrolysis cathode conducting head copper and aluminium are different
Matter metal composite method, is specifically carried out according to the following steps：
Step 1：Copper billet and aluminium block are taken respectively；Clear up the solder side of copper billet and the solder side of aluminium block；
Step 2：When the material of copper billet used is T2, when the material of aluminium block is L1060：
Brazing flux is respectively coated on the solder side of copper billet and after cleaning on the solder side of aluminium block after the cleaning；Copper billet after the cleaning
Solder side on and cleaning after aluminium block solder side on the special brazing flux of solder used is respectively coated；In the coating of aluminium block solder side
The first solder is laid on brazing flux, when laying the first solder, using the center line of aluminium block solder side as symmetry axis, the first solder is symmetrically spread
It is located on the solder side of aluminium block, then, copper billet is stacked on the solder side of aluminium block, makes on copper billet solder side and aluminium block solder side
The first solder be in contact, formed the first blank；By the first blank heating to 600 ± 5 DEG C, make the first brazing filler metal melts, stop adding
Heat, take out, pressurization, air cooling；The compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
When the material of copper billet used is T2, when the material of aluminium block is L6101：
The second solder is laid in aluminium block solder side,, will using the center line of aluminium block solder side as symmetry axis when laying the second solder
Then second solder symmetrical laying, copper billet is stacked on the solder side of aluminium block on the solder side of aluminium block, make copper billet solder side
It is in contact with the second solder on aluminium block solder side, forms the second blank；By the second blank heating to 520 ± 5 DEG C, make the second pricker
Material fusing, stops heating, takes out, pressurization, air cooling；The workpiece after soldering is clamped, makes one in two longer weld seams of length
Weld seam is upward, and friction welding is stirred to the weld seam, then, overturns 180 °, makes the longer weld seam of another length upward, right
The weld seam is stirred friction welding；The weld penetration of agitating friction welding twice is all higher than 5mm, and the weld seam is stirred and rubbed
Wipe welding；Cutting removes the fabrication hole of agitating friction weldering, the compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
Complex method of the present invention makes copper/aluminium composite zinc electrolysis cathode conductive head using antivacuum soldering tech, and copper/aluminium is different
Metallurgical binding area between matter metal interface can reach more than 95%.Weld seam is full, closely knit, under the conditions of complicated acid gas phase, tool
There is preferable corrosion resistance, and the dosage of metallic copper is few, the 1/3 of only former dosage；Compared with explosion welding method, agitated friction welding (FW)
Afterwards, between copper/aluminium dissimilar metal, without clear and definite copper/aluminium transition interface, and then the shadow of the crisp tissue of weld interface metallic hard is eliminated
Ring, improve the toughness of weld seam, low manufacture cost, the 1/2 of only former cost, it is good to make working condition, without any pernicious gas
Or waste discharge.
Brief description of the drawings
Fig. 1 is that the equipped electrolytic zinc negative electrode of existing compound casting conductive head is equipped with conductive head made from embodiment 1
Electrolytic zinc negative electrode in production process in each six grooves tank voltage average value curve comparison figure.
The equipped electrolytic zinc negative electrode conductive contact upper end 30mm places of the existing compound casting conductive heads of Fig. 2 and embodiment 1
The equipped electrolytic zinc negative electrode conductive contact upper end 30mm of obtained conductive head is in temperature variation curve comparison diagram in production process.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
At present, zinc electrolysis cathode conducting head is inlayed based on casting method with traditional copper and Al bimetal, there is boundary
Face adhesion is poor, two metal interfaces notable defect easy to crack.Under actual working conditions, acid gas phase media easily enters at cracking
Enter, metallic copper is gradually corroded.With the increase of corroded area, and complicated acid gas phase media depositing crystalline salt at gap
Accumulation, make the electric conductivity of conductive head in being gradually reduced trend, and conductive head operating temperature can also gradually rise；Again due to copper and
Metallic tin between aluminium is less electrically conductive than copper and aluminium, under big operating current transmission conditions, difference caused by its resistivity
Influence substantially, to again result in tank voltage and the rise of conductive contact temperature, and then influence current efficiency.Influence dual damascene casting
The conductive head quality of method production factor is more, conductive head quality problems are difficult to find in time so that the quality of finished product conductive head
Uniformity is difficult to control.In order to overcome above-mentioned problems of the prior art, the invention provides a kind of zinc electrolysis negative electrode to lead
Dateline copper and aluminium dissimilar metal complex method, by increasing capacitance it is possible to increase the metallurgical binding ratio of metal interface, metal interface adhesion is improved,
Reduce contact resistance and unit dc consumption.The complex method is specifically carried out according to the following steps：
Step 1：Copper billet and aluminium block are taken respectively, take the size of copper billet and the size of aluminium block to prepare zinc electrolysis with existing
The size of copper billet needed for cathode conducting head method and the size of aluminium block are identical；
The material of taken copper billet is T2, and the material for taking aluminium block is L1060 or L6101, and copper billet and aluminium block are rectangular
Body.
Step 2：Clear up the solder side of copper billet and the solder side of aluminium block；
Step 3：When the material of copper billet used is T2, when the material of aluminium block is L1060：
The special pricker of solder used is respectively coated on the solder side of copper billet and after cleaning on the solder side of aluminium block after the cleaning
Agent；Lay the first solder on the brazing flux of aluminium block solder side coating, when laying the first solder, using the center line of aluminium block solder side as pair
Claim axle, by the first solder symmetrical laying on the solder side of aluminium block, the first solder surrounds the shape and aluminium block solder side of figure
Shape it is identical, the first solder surround the distance between each border aluminium block border corresponding with each border of figure for 2~
3mm；Then, copper billet is stacked on the solder side of aluminium block, copper billet solder side is connected with the first solder on aluminium block solder side
Touch, form the first blank；By the first blank heating to 600 ± 5 DEG C, make the first brazing filler metal melts, stop heating, take out, with manual
Forcing press pressurizes, between the first solder for enabling to be in a liquid state after fusing is preferably filled up between copper billet solder side and aluminium block solder side
Gap, air cooling；The compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
First solder is patent application《A kind of composite soldering explosive core aluminium welding wire and preparation method thereof》（Application number
201310553434.X publication No. CN103612026A, date of publication 2014.03.05）In disclosed composite soldering explosive core aluminium welding wire
Crust.Special flux in step 3 is the medicine core in the composite soldering explosive core aluminium welding wire of the patent application publication.
When the material of copper billet used is T2, when the material of aluminium block is L6101：
The second solder is laid in aluminium block solder side,, will using the center line of aluminium block solder side as symmetry axis when laying the second solder
Then second solder symmetrical laying, copper billet is stacked on the solder side of aluminium block on the solder side of aluminium block, make copper billet solder side
It is in contact with the second solder on aluminium block solder side, forms the second blank；By the second blank heating to 520 ± 5 DEG C, make the second pricker
Material fusing, stops heating, takes out, is pressurizeed with hand press, the second solder for enabling to be in a liquid state after fusing preferably fills up copper
Gap between block welding face and aluminium block solder side, air cooling；The workpiece after soldering is clamped with flat-nose pliers, make that length is longer two
A weld seam in weld seam is upward, and friction welding is stirred to the weld seam, then, overturns 180 °, makes another length longer
Weld seam upward, friction welding is stirred to the weld seam；The weld penetration of agitating friction welding twice is all higher than 5mm, to this
Weld seam is stirred friction welding；Cutting removes the fabrication hole of agitating friction weldering, the compound zinc electricity of obtained copper and aluminium dissimilar metal
Solve cathode conducting head.
Second solder uses the E22NC copper aluminium medicine core soldering wires of upper sea otter cyclopentadienyl mechanical ＆ electronic equipment corporation, Ltd production.
The FSW-TS-M16 produced during agitating friction weldering using industrial group Beijing FSW Technology Co., Ltd of Air China
Desk-top agitating friction soldering equipment；
The heating-up temperature of blank should be above 20~30 DEG C of solder melt temperature.If temperature is relatively low, molten state solder and weldering
Abundant infiltration can not be realized by connecing metal, and cause weld planar defect it is more, welding effect is poor；Because brazing flux has reduction welding metal
The effect of fusing point, when temperature is too high, the solder side rapid melting of aluminium block will be caused, cause welding to fail.
Soldering is than by the low solder of weldering metal, capillarity and pressurized treatments being relied on after fusing, make liquid using fusing point
State solder fills up solder side gap, and connection is realized in phase counterdiffusion between mother metal.In place of the main difference of soldering and melting welding
It is：There was only brazing filler metal melts during soldering, non-fusible by weldering metal, liquid solder enters two by wetting action and capillarity
In gap between weldment, so as to form welding, reach the knot of atom by the phase counterdiffusion of liquid solder and solid metallic
Close；Both materials are mutually coordinated simultaneously.
Friction welding (FW) is mutually to be moved using workpiece end face, be hot caused by phase mutual friction, end is reached hot plastic state,
Then rapid upset, a kind of method of welding is completed.It is with the difference of normal welding, agitating friction weldering welding process is
The seam crossing of workpiece is put in by the soldering tip of a cylindrical shape, is rotated by the high speed of soldering tip, makes itself and welding workpiece material
Friction, so that the material temperature rise softening of connecting portion, while friction is stirred to material to complete welding.
The actual working conditions that the present invention produces for domestic electrolytic zinc, by the compound antivacuum pricker of copper/aluminium dissimilar metal
Weldering and agitating friction technology are applied to the preparation of zinc electrolysis cathode conducting head, increase conductive contact area, improve metal interface
Metallurgical binding ratio, the bond strength at enhancing metal transfer interface, reduce the direct current list in contact resistance and electrolytic zinc production
Consumption.
Embodiment 1
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L1060.Clear up the solder side of copper billet aluminium block；The solder side of copper billet after the cleaning
Brazing flux is respectively coated on the solder side of aluminium block after upper and cleaning；The first solder is laid on the solder flux of aluminium block solder side coating, is spread
If during the first solder, using the center line of aluminium block solder side as symmetry axis, by the first solder symmetrical laying on the solder side of aluminium block, the
The shape that one solder surrounds figure is identical with the shape of aluminium block solder side, and the first solder surrounds each border of figure and each side
The distance between aluminium block border corresponding to boundary is 2~3mm；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, the first blank is formed, first blank is placed in heater, is warming up to 600 DEG C, makes the first brazing filler metal melts, stops
Only heat, pressurizeed with hand press, air cooling；The compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
In electrolytic zinc production, the tank voltage of electrolytic cell is the important indicator for weighing unit dc consumption.Tank voltage reduces
10mV, the unit dc consumption of electrowinning zinc per ton can decline 9kW.h.It is made with existing compound casting conductive head and embodiment 1
Conductive head be equipped with electrolytic zinc negative electrode respectively.In operating current 28kA, the equipped electrolytic zinc of the conductive head made from embodiment 1
The tank voltage of negative electrode, the tank voltage 11mV for the electrolytic zinc negative electrode being equipped with less than compound casting conductive head.In operating current 33kA
When, the tank voltage of the equipped electrolytic zinc negative electrode of the conductive head made from embodiment 1, the electricity being equipped with less than compound casting conductive head
Solve the tank voltage 19mV of zinc negative electrode.The electricity that conductive head made from the conductive head and embodiment 1 of actual measurement compound casting is equipped with respectively
The average value of each six grooves tank voltage of zinc negative electrode is solved, sees Fig. 1.The operating current of sequence number 1~11 is 28kA on abscissa in Fig. 1, sequence
Numbers 12~26 operating current is 33kA, it can be seen from figure 1 that under different operating current condition, 26 measure of tank voltage
As a result show, the equipped electrolytic zinc negative electrode tank voltage of conductive head institute is below with existing compound casting made from embodiment 1
The equipped electrolytic zinc negative electrode tank voltage of conductive head institute；The tank voltage difference of the two increases with the rise of operating current.Illustrate to use
Conductive head made from embodiment 1, the overlap joint effect of conductive contact and the electric current transmission of copper/aluminium transition zone are improved, so as to improve
The electric conductivity of electrolytic zinc negative electrode.
Under the conditions of difference caused by workshop ventilation is excluded, 25 cathode conducting heads of 6 groove interludes are respectively taken respectively, are surveyed
Its temperature is measured, to observe conductive contact overlap joint and copper/aluminium interface state.If overlap bad or conductive head copper/aluminium engagement circle
The electric conductivity in face reduces, then during contact resistance increase, can cause close to the temperature drift of overlapped points position or conductive tactile with group
The temperature difference of head is larger.And the conductive contact that observed temperature is relatively low, illustrate that intermetallic conductive state is normal, do lost work relatively
It is few.
The electrolytic zinc negative electrode being equipped with respectively to conductive head made from existing compound casting conductive head and embodiment 1 is conductive
Temperature at the 30mm of contact upper end compares, the conductive head made from embodiment 1 equipped electrolytic zinc negative electrode conductive contact reality
Testing temperature, more existing compound casting conductive head equipped electrolytic zinc negative electrode conductive contact observed temperature, average low 0.9 DEG C.
The changing trend diagram of observed temperature, is shown in Fig. 2.From figure 2, it is seen that under the conditions of difference caused by workshop ventilation is excluded, surveyed
In determine conductive contact mean temperature 12 days, the mean temperature being made with embodiment 1 at the 30mm of conductive contact upper end is below using
The mean temperature of existing compound casting conductive contact same position.Illustrate overlap joint effect and copper/aluminium mistake due to conductive contact
The improvement of the electric current transmission of layer is crossed, reduces ineffective energy consumption of the electric current in transmitting procedure.
With the compound antivacuum soldering tech of copper/aluminium dissimilar metal, copper/aluminium composite zinc electrolysis cathode conductive head of realization,
It is good with copper/aluminium composite surface metallurgical binding, contact resistance is eliminated, good conductivity；Copper conductive contact area is big, can improve electricity
Circulation is excessive, advantageously reduces unit dc consumption；Defect is easy to find in process of production, is advantageous to quality control；Make work
Skill controllability is good, produces product quality stabilization, and the more low evident characteristic of cost in enormous quantities.
Embodiment 2
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L1060.Clear up the solder side of copper billet and aluminium block；The welding of copper billet after the cleaning
Brazing flux is respectively coated on face and after cleaning on the solder side of aluminium block；The first solder is laid on the solder flux of aluminium block solder side coating,
When laying the first solder, using the center line of aluminium block solder side as symmetry axis, by the first solder symmetrical laying on the solder side of aluminium block,
The shape that first solder surrounds figure is identical with the shape of aluminium block solder side, the first solder surround each border of figure with it is each
The distance between aluminium block border corresponding to border is 2~3mm；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, formed the first blank, first blank is placed in heater, is warming up to 605 DEG C, makes the first brazing filler metal melts,
Stop heating, pressurizeed with hand press, air cooling；The compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
Embodiment 3
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L1060.Clear up the solder side of copper billet and aluminium block；The welding of copper billet after the cleaning
Brazing flux is respectively coated on face and after cleaning on the solder side of aluminium block；The first solder is laid on the solder flux of aluminium block solder side coating,
When laying the first solder, using the center line of aluminium block solder side as symmetry axis, by the first solder symmetrical laying on the solder side of aluminium block,
The shape that first solder surrounds figure is identical with the shape of aluminium block solder side, the first solder surround each border of figure with it is each
The distance between aluminium block border corresponding to border is 2~3mm；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, formed the first blank, first blank is placed in heater, is warming up to 595 DEG C, makes the first brazing filler metal melts,
Stop heating, pressurizeed with hand press, air cooling；The compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
Embodiment 4
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L6101.Clear up the solder side of copper billet and aluminium block；Laid on aluminium block solder side
Second solder, with symmetrically placed second solder of solder side center line；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, formed the second blank, second blank is placed in heater, is warming up to 520 DEG C, makes the second brazing filler metal melts,
Stop heating, pressurizeed with hand press, air cooling；The workpiece after soldering is clamped with flat-nose pliers, makes two weld seams that length is longer
In a weld seam it is upward, friction welding is stirred to the weld seam, then, overturn 180 °, make the longer weldering of another length
Seam upward, friction welding is stirred to the weld seam；The weld penetration of agitating friction welding twice is all higher than 5mm, to the weld seam
Friction welding is stirred, cutting removes the fabrication hole of agitating friction weldering, and the compound zinc electrolysis of obtained copper and aluminium dissimilar metal is cloudy
Pole conductive head.
The conductive head made from existing compound casting conductive head and embodiment 4 is equipped with electrolytic zinc negative electrode respectively.In work
When making electric current 28kA, the tank voltage of the equipped electrolytic zinc negative electrode of the conductive head made from embodiment 4 is conductive less than compound casting
The tank voltage 10.88mV of the equipped electrolytic zinc negative electrode of head.In operating current 33kA, the conductive head made from embodiment 4 is equipped with
Electrolytic zinc negative electrode tank voltage, less than compound casting conductive head be equipped with electrolytic zinc negative electrode tank voltage 18.85mV.Actual measurement
Each six grooves tank voltage of electrolytic zinc negative electrode that conductive head made from the conductive head and embodiment 4 of compound casting is equipped with respectively is averaged
Value, under different operating current condition, 26 measurement results of tank voltage show that the conductive head made from embodiment 4 is equipped with
Electrolytic zinc negative electrode tank voltage is below with the equipped electrolytic zinc negative electrode tank voltage of existing compound casting conductive head institute；The groove of the two
Voltage difference increases with the rise of operating current.Illustrate to use conductive head made from embodiment 4, improve taking for conductive contact
The electric current transmission of effect and copper/aluminium transition zone is connect, so as to improve the electric conductivity of electrolytic zinc negative electrode.
Under the conditions of difference caused by workshop ventilation is excluded, 25 cathode conducting heads of 6 groove interludes are respectively taken respectively, are surveyed
Its temperature is measured, to observe conductive contact overlap joint and copper/aluminium interface state.If overlap bad or conductive head copper/aluminium engagement circle
The electric conductivity in face reduces, then during contact resistance increase, can cause close to the temperature drift of overlapped points position or conductive tactile with group
The temperature difference of head is larger.And the conductive contact that observed temperature is relatively low, illustrate that intermetallic conductive state is normal, do lost work relatively
It is few.
The electrolytic zinc negative electrode being equipped with respectively to conductive head made from existing compound casting conductive head and embodiment 4 is conductive
Temperature at the 30mm of contact upper end compares, the conductive head made from embodiment 4 equipped electrolytic zinc negative electrode conductive contact reality
Testing temperature, more existing compound casting conductive head equipped electrolytic zinc negative electrode conductive contact observed temperature, average low 0.8 DEG C.
Under the conditions of difference caused by workshop ventilation is excluded, in 12 days of determined conductive contact mean temperature, made with embodiment 4
Mean temperature at the 30mm of conductive contact upper end is below average temperature with existing compound casting conductive contact same position
Degree.Illustrate, due to the improvement of the electric current transmission of overlap joint effect and copper/aluminium transition zone of conductive contact, to reduce electric current and be transmitted across
Ineffective energy consumption in journey.
Embodiment 5
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L6101.Clear up the solder side of copper billet and aluminium block；Laid on aluminium block solder side
Second solder, with symmetrically placed second solder of solder side center line；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, formed the second blank, second blank is placed in heater, is warming up to 525 DEG C, then by embodiment 4
Copper and the compound zinc electrolysis cathode conducting head of aluminium dissimilar metal is made in method.
Embodiment 6
As it is existing prepare zinc electrolysis cathode conducting head method needed for the specification of copper billet and aluminium block, take copper billet and aluminium respectively
Block；The material of copper billet is T2, and the material of aluminium block is L6101.Clear up the solder side of copper billet and aluminium block；Laid on aluminium block solder side
Second solder, with symmetrically placed second solder of solder side center line；Copper billet and aluminium block are stacked, make the solder side of copper billet towards aluminium block
Solder side, formed the second blank, second blank is placed in heater, is warming up to 515 DEG C, then by embodiment 4
Copper and the compound zinc electrolysis cathode conducting head of aluminium dissimilar metal is made in method.
Claims (1)
1. a kind of zinc electrolysis cathode conducting head copper and aluminium dissimilar metal complex method, it is characterised in that the complex method is specifically pressed
Following steps are carried out：
Step 1：Copper billet and aluminium block are taken respectively；Clear up the solder side of copper billet and the solder side of aluminium block；
Step 2：When the material of copper billet used is T2, when the material of aluminium block is L6101：
The second solder is laid in aluminium block solder side, when laying the second solder, using the center line of aluminium block solder side as symmetry axis, by second
Solder symmetrical laying is on the solder side of aluminium block, and then, copper billet is stacked on the solder side of aluminium block, makes copper billet solder side and aluminium
The second solder on block welding face is in contact, and forms the second blank；By the second blank heating to 520 ± 5 DEG C, melt the second solder
Change, stop heating, take out, pressurization, air cooling；The workpiece after soldering is clamped, makes a weld seam in two longer weld seams of length
Upwards, friction welding is stirred to the weld seam, then, overturns 180 °, make the longer weld seam of another length upward, to the weldering
Seam is stirred friction welding；The weld penetration of agitating friction welding twice is all higher than 5mm, and friction welding (FW) is stirred to the weld seam
Connect；Cutting removes the fabrication hole of agitating friction weldering, the compound zinc electrolysis cathode conducting head of obtained copper and aluminium dissimilar metal.
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| CN107649779A (en) * | 2017-08-08 | 2018-02-02 | 西安理工大学 | A kind of preparation method of Ag Ti bimetallic cathode materials |
| CN114952204A (en) * | 2022-06-30 | 2022-08-30 | 金锢电气有限公司 | Copper-aluminum composite welding method |
| CN117245252B (en) * | 2023-11-17 | 2024-01-19 | 中国航发沈阳黎明航空发动机有限责任公司 | Inertia friction welding and diffusion welding composite manufacturing method for hollow turbine disk with journal |
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| CN101758329B (en) * | 2008-12-24 | 2012-01-11 | 中国科学院金属研究所 | Stirring friction welding method for improving aluminum copper dissimilar metal connection intensity |
| CN102151929B (en) * | 2011-05-16 | 2012-12-12 | 无锡马山永红换热器有限公司 | Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator |
| CN102513637A (en) * | 2011-11-25 | 2012-06-27 | 广东电网公司电力科学研究院 | Copper-aluminum (Cu-Al) braze welding process of copper-aluminum transition wire clamp |
| JP5915198B2 (en) * | 2012-01-19 | 2016-05-11 | 日本軽金属株式会社 | Surface brazing method of aluminum alloy member and copper alloy member |
| CN102794562B (en) * | 2012-08-24 | 2014-12-10 | 北京科技大学 | Reacting friction stir welding method applicable for connecting aluminum alloy to copper alloy |
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