CN114054535A - Copper-aluminum composite double-row continuous extrusion production line and production process - Google Patents
Copper-aluminum composite double-row continuous extrusion production line and production process Download PDFInfo
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- CN114054535A CN114054535A CN202010768292.9A CN202010768292A CN114054535A CN 114054535 A CN114054535 A CN 114054535A CN 202010768292 A CN202010768292 A CN 202010768292A CN 114054535 A CN114054535 A CN 114054535A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 289
- 239000002131 composite material Substances 0.000 title claims abstract description 135
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 64
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 241
- 229910052802 copper Inorganic materials 0.000 claims abstract description 241
- 239000010949 copper Substances 0.000 claims abstract description 241
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 118
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 118
- 230000002146 bilateral effect Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000004381 surface treatment Methods 0.000 claims description 27
- 238000004804 winding Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/22—Making metal-coated products; Making products from two or more metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/006—Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
Abstract
The invention provides a copper-aluminum composite double-row continuous extrusion production line and a production process, the copper-aluminum composite double-row continuous extrusion production line comprises an aluminum rod double pay-off rack, a copper bar double pay-off rack, a continuous extruder, a tractor, a splitting machine and a collecting rack, the continuous extruder comprises an extrusion die with an extrusion die cavity, install the extrusion die in the extrusion die cavity, and have the double flute extrusion wheel in extrusion groove, the extrusion die cavity can allow two copper bars to get into, the extrusion die is equipped with the extrusion convex part that relative setting from top to bottom in the extrusion die cavity, and form the draw-in groove between two extrusion convex parts, the draw-in groove has the copper bar extrusion die cavity that two bilateral symmetry set up, two copper bar extrusion die cavities hold two copper bars respectively, the extrusion groove on the double flute extrusion wheel has two, the symmetric distribution is in the left and right sides in extrusion die cavity, the end in two extrusion grooves extends to the outside in two copper bar extrusion die cavities respectively. The copper-aluminum composite bar can be produced by continuous extrusion, and the copper-aluminum composite bar is double-row, so that the production efficiency of the copper-aluminum composite bar is improved.
Description
Technical Field
The invention relates to the field of copper-aluminum composite material processing, in particular to a copper-aluminum composite double-row continuous extrusion production line and a production process.
Background
One surface of the copper-aluminum composite belt is copper, the other surface is aluminum, and the copper and the aluminum form physical combination between molecules and are used for conductive materials. For example, the electrode of the new energy battery needs a long copper-aluminum composite strip as a raw material; copper-aluminum composite strips are also needed to be used as raw materials, such as copper-aluminum joints, electrical equipment, electronic bars, electronic belts and the like. Therefore, the copper-aluminum composite belt is a functional material and has wide application.
Because the copper and the aluminum can form a powder phase in the temperature environment of more than 500 ℃, and the copper and the aluminum can not be bonded, the composition of the copper and the aluminum can only be pressed at the temperature of less than 500 ℃ and form physical combination. And when the temperature of the copper is raised to be above 80 ℃, the surface of the copper is oxidized, so that the copper cannot form composite bonding with the aluminum, and the actual copper and aluminum compounding is cold rolling or cold drawing compounding at room temperature. Because the copper-aluminum cold working compounding needs to have large processing amount, the theoretical combined processing amount is more than 81 percent, and the actual combined processing amount is at least more than 90 percent, so that the copper and the aluminum can be combined together. At present, square copper and aluminum ingots are mainly used for processing and producing copper-aluminum composite strips, the square copper and aluminum ingots are compounded into a plate by cold rolling with large processing deformation, then the copper-aluminum composite plate is cut into the copper-aluminum composite strips, when the copper-aluminum composite strips are manufactured by cold processing, copper bars and aluminum bars with large thickness are needed to be rolled, the copper bars and the aluminum bars with large thickness cannot be coiled, only the copper bars and the aluminum bars which are arranged in straight are adopted, the length of the copper bars and the aluminum bars cannot exceed 12 meters, and the copper-aluminum composite strips cannot be continuously extruded and produced. Therefore, the existing copper-aluminum composite belt processing technology has the problems of long process flow, low yield, high cost for manufacturing the copper-aluminum composite belt material and the like, so that the copper-aluminum composite belt processing technology is not an optimal process method.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention aims to provide a copper-aluminum composite double-row continuous extrusion production line, which can continuously extrude and produce copper-aluminum composite rows (strips), and greatly improve the production efficiency.
In order to achieve the purpose, the invention provides a copper-aluminum composite double-row continuous extrusion production line, which comprises:
two pay off racks of aluminium pole: used for supplying two bilateral aluminum rods;
copper bar double pay-off rack: the copper bar is used for supplying two copper bars which are symmetrical left and right;
continuous extrusion machine: the double-groove extrusion die comprises an extrusion die with an extrusion die cavity, an extrusion die arranged in the extrusion die cavity and a double-groove extrusion wheel with an extrusion groove, wherein the extrusion die cavity can allow double copper bars to enter, the extrusion die is provided with extrusion convex parts which are oppositely arranged up and down and a clamping groove formed between the two extrusion convex parts in the extrusion die cavity, the clamping groove is provided with two copper bar extrusion die cavities which are symmetrically arranged left and right, the two copper bar extrusion die cavities respectively contain two copper bars, the two extrusion grooves on the double-groove extrusion wheel are symmetrically distributed on the left side and the right side of the extrusion die cavity, and the tail ends of the two extrusion grooves respectively extend to the outer sides of the two copper bar extrusion die cavities;
a tractor: used for drawing copper bars or copper-aluminum composite double rows;
splitting machine: the copper-aluminum composite double-row cutting device is used for cutting the copper-aluminum composite double-row into two rows of copper-aluminum composite rows which are symmetrical left and right at the close position of the double copper rows; and the number of the first and second groups,
a row-collecting frame: the winding device is used for winding two rows of copper-aluminum composite rows;
follow the direction that aluminium pole and copper bar moved forward, the two pay off rack of aluminium pole and the two pay off rack of copper bar all are located the rear side of continuous extrusion machine, tractor, cutting machine and receipts are arranged from the back to the front in proper order.
Further, the copper-aluminum composite double-row continuous extrusion production line further comprises an aluminum rod straightening machine and an aluminum rod surface treatment machine, wherein the aluminum rod double-pay-off rack, the aluminum rod straightening machine, the aluminum rod surface treatment machine and the continuous extrusion machine are sequentially arranged from back to front.
Further, the copper-aluminum composite double-row continuous extrusion production line further comprises a copper bar straightening and pressing pre-micro-tension machine and a copper bar surface treatment machine, wherein the copper bar double pay-off rack, the copper bar straightening and pressing pre-micro-tension machine, the copper bar surface treatment machine and the continuous extrusion machine are sequentially arranged from back to front.
Further, the copper-aluminum composite double-row continuous extrusion production line further comprises a copper bar heating protection system, the copper bar heating protection system is arranged between the copper bar surface treatment machine and the continuous extrusion machine, and the copper bar heating protection system is used for heating double copper bars and applying protective gas to the surfaces of the double copper bars.
Furthermore, an extension pipe is connected between an outlet of the copper bar heating protection system and an inlet of an extrusion die cavity in the extrusion die.
Further, the copper-aluminum composite double-row continuous extrusion production line further comprises a cooling water tank and a tension mechanism, wherein the cooling water tank is arranged between the continuous extruder and the tractor, and the tension mechanism is arranged between the splitting machine and the winding and unwinding frame.
Further, the tractor comprises a first traction unit and a second traction unit which are sequentially arranged side by side from front to back, wherein the first traction unit is used for drawing copper and aluminum composite double rows, and the second traction unit is used for drawing a copper bar.
Further, first traction unit and second traction unit all include the belt straight line traction unit of relative setting from top to bottom of two sets of, belt straight line traction unit includes a plurality of front and back side by side rotation wheel and overlaps and establish the traction area in a plurality of rotation wheel peripheries, the traction area is the rubber tape.
Furthermore, two copper bar extrusion die cavities in the extrusion die are communicated, self-lubricating blocks are arranged at the upper end and the lower end of the clamping groove of the extrusion die, a sliding gap is formed between the self-lubricating blocks and the copper bars, and the self-lubricating blocks are arranged at the inlet end of the extrusion die.
Further, the continuous extrusion machine also comprises a guide die arranged in the extrusion die cavity, and the guide die, the self-lubricating block and the extrusion die are in butt fit in sequence from back to front.
The application also provides a copper-aluminum composite double-row continuous extrusion production process, which uses the copper-aluminum composite double-row continuous extrusion production line, and comprises the following steps:
s1, supplying two bilaterally symmetrical aluminum rods to the continuous extruder by the aluminum rod double pay-off rack, wherein the two aluminum rods respectively enter two extrusion grooves of a double-groove extrusion wheel of the continuous extruder and are conveyed to the outer sides of two copper bar extrusion die cavities;
s2, supplying two bilaterally symmetrical copper bars to the continuous extruder by the copper bar double pay-off rack, enabling the two copper bars to enter an extrusion die cavity of an extrusion die of the continuous extruder and be conveyed into the copper bar extrusion die cavity, and enabling the copper bars to pass through the extrusion die and to be wound on a winding rack through traction of a traction machine;
s3, combining the copper bar in the copper bar extrusion die cavity and the solid aluminum melt outside the copper bar extrusion die cavity in the copper bar extrusion die cavity, feeding the combined product into an extrusion die, and extruding copper and aluminum composite double rows through the extrusion die;
s4, the tractor pulls the copper-aluminum composite double rows forwards;
s5, the copper-aluminum composite double rows pass through a splitting machine, and the splitting machine splits the copper-aluminum composite double rows into two rows of copper-aluminum composite rows which are symmetrical left and right at the close positions of the double copper rows;
and S6, winding the two rows of copper-aluminum composite rows on a row winding frame.
As mentioned above, the copper-aluminum composite double-row continuous extrusion production line and the production process provided by the invention have the following beneficial effects:
compared with the prior art, the copper-aluminum composite bar can be produced by continuous extrusion, and the copper-aluminum composite bar is double-row, so that the production efficiency of the copper-aluminum composite bar is greatly improved, the production efficiency is improved by at least 50%, meanwhile, the process waste is reduced, the production procedure is reduced, the energy consumption is reduced, the number of operators is reduced, the production cost of the copper-aluminum composite bar is finally reduced, and the product quality is improved.
Drawings
Fig. 1 is a front view of a copper-aluminum composite double-row continuous extrusion production line in the application.
Fig. 2 is a top view of the copper-aluminum composite double-row continuous extrusion production line in the application.
Fig. 3 is a schematic view of the structure of the continuous extruder of the present application.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a cross-sectional view of an extruded copper aluminum composite double row in the present application.
Description of the element reference numerals
10 aluminum rod double pay-off rack
20 copper bar double pay-off rack
30 continuous extrusion press
31 extrusion die
311 extrusion die cavity
312 crush lobes
313 card slot
32 extrusion die
33 double-groove extrusion wheel
331 extrusion groove
34 self-lubricating block
35 guide die
36 inlet hold-down bolt
37 outlet hold-down bolt
40 traction machine
41 first traction unit
42 second traction unit
50 splitting machine
60 folding and arranging frame
70 aluminum rod straightening machine
80 aluminum rod surface treatment machine
90 copper bar alignment compresses tightly pretension machine in advance
110 copper bar surface treatment machine
120 copper bar heating protection system
130 cooling water tank
140 tension mechanism
150 copper-aluminum composite double row
151 copper bar
152 aluminum row
160 main operating table
170 guide wheel
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The application provides a copper-aluminum composite double-row continuous extrusion production line. As shown in fig. 1 and 2, the copper-aluminum composite double-row continuous extrusion production line related to the present application includes an aluminum bar double pay-off rack 10, a copper bar double pay-off rack 20, a continuous extruder 30, a tractor 40, a splitting machine 50, and a row collecting rack 60. For convenience of description, the moving direction of the aluminum rod and the copper bar when the copper-aluminum composite row is produced by the continuous extrusion of the copper-aluminum composite double-row continuous extrusion production line is defined as the front direction. Based on this, along the direction that aluminium pole and copper bar moved forward, aluminium pole pair pay off rack 10 and copper bar pair pay off rack 20 all are located the rear side of continuous extrusion machine 30, and continuous extrusion machine 30, tractor 40, cutting machine 50 and row of receipts frame 60 arrange from back to front in proper order. Further, in the copper-aluminum composite double-row continuous extrusion production line, the aluminum rod double pay-off rack 10 is used for supplying two aluminum rods which are symmetrical left and right; the copper bar double pay-off rack 20 is used for supplying two copper bars which are symmetrical left and right; the continuous extruder 30 is used for extruding the double aluminum rods and the double copper bars to produce copper-aluminum composite double rows 150 as shown in fig. 5, the copper-aluminum composite double rows 150 are provided with copper bars 151 which are tightly abutted left and right but are not combined, and aluminum bars 152 which are extruded and combined on the outer sides of the copper bars 151, namely, the aluminum bars 152 are extruded and combined on the left side surface of the copper bar 151 on the left side, the aluminum bars 152 are extruded and combined on the right side surface of the copper bar 151 on the right side, and aluminum films are extruded and combined on the upper side surface and the lower side surface of the copper bar 151; the tractor 40 is used for dragging the copper bar or copper-aluminum composite double row 150; the splitting machine 50 is used for cutting the aluminum film at the close position of the double copper bars so as to split the copper-aluminum composite double rows 150 into two rows of copper-aluminum composite rows which are symmetrical left and right; the row-folding frame 60 is used for folding and winding two rows of copper-aluminum composite rows. In particular, as shown in fig. 3 and 4, the continuous extrusion machine 30 of the present application includes an extrusion die 31 having an extrusion die cavity 311, an extrusion die 32 installed in the extrusion die cavity 311, and a double-groove extrusion wheel 33 having an extrusion groove 331, where the extrusion die cavity 311 is capable of allowing double copper bars to enter, the extrusion die 31 is provided with extrusion protrusions 312 disposed opposite to each other in the extrusion die cavity 311, and a clamping groove 313 formed between the two extrusion protrusions 312, the clamping groove 313 has two copper bar extrusion die cavities disposed symmetrically left and right, the two copper bar extrusion die cavities respectively accommodate two copper bars, the two extrusion grooves 331 on the double-groove extrusion wheel 33 are two and symmetrically distributed on the left and right sides of the extrusion die cavity 311, and the ends of the two extrusion grooves 331 respectively extend to the outer sides of the two copper bar extrusion die cavities; namely: the tail end of the left side extrusion groove 331 on the double-groove extrusion wheel 33 extends to the left side of the left side copper bar extrusion die cavity, and the tail end of the right side extrusion groove 331 on the double-groove extrusion wheel 33 extends to the right side of the right side copper bar extrusion die cavity.
The application also provides a copper-aluminum composite double-row continuous extrusion production process, which uses the copper-aluminum composite double-row continuous extrusion production line, and comprises the following steps:
s1, supplying two bilaterally symmetrical aluminum rods to the continuous extruder 30 by the aluminum rod double pay-off rack 10, enabling the two aluminum rods to respectively enter the two extrusion grooves 331 of the double-groove extrusion wheel 33 of the continuous extruder 30 and to be extruded and conveyed to the outer sides of the two copper bar extrusion die cavities, and extruding the aluminum rods into solid aluminum melt;
s2, supplying two bilaterally symmetrical copper bars to the continuous extruder 30 by the copper bar double pay-off rack 20, enabling the two copper bars to enter a clamping groove 313 of an extrusion die cavity 311 of an extrusion die 31 of the continuous extruder 30 and be conveyed into the copper bar extrusion die cavity, and enabling the copper bars to simultaneously penetrate through the extrusion die 32 and to be wound on a winding rack 60 through traction of a traction machine 40;
s3, combining the copper bar in the copper bar extrusion die cavity and the solid aluminum melt outside the copper bar extrusion die cavity in the copper bar extrusion die cavity, then entering the extrusion die 32, and extruding copper and aluminum composite double rows 150 through the extrusion die 32; as shown in fig. 5, the copper-aluminum composite double row 150 has copper bars 151 closely abutted to each other from left to right but not combined, aluminum bars 152 press-combined to the left and right sides of the copper bars 151, and aluminum films press-combined to the upper and lower sides of the copper bars 151; the extrusion die cavity of the extrusion die 32 is provided with a clamping groove 313 double-row extrusion structure, so that the extrusion friction force is balanced, and the continuous extrusion of copper-aluminum composite double rows 150 is realized;
s4, the tractor 40 pulls the copper-aluminum composite double row 150 forwards;
s5, moving the copper-aluminum composite double row 150 forward under the action of the tractor 40, passing the copper-aluminum composite double row 150 through a splitting machine 50, and cutting an aluminum film at the close position of the double copper bars by the splitting machine 50, thereby splitting the copper-aluminum composite double row 150 into two rows of copper-aluminum composite rows which are symmetrical left and right;
s6, under the action of the tractor 40, the two rows of copper-aluminum composite rows move forwards, and the two rows of copper-aluminum composite rows are wound on the winding frame 60.
Therefore, the copper-aluminum composite bar can be produced by continuous extrusion, the copper-aluminum composite bar is double-row, the production efficiency of the copper-aluminum composite bar is greatly improved, the production efficiency is improved by at least 50%, meanwhile, the process waste is reduced, the production procedures are reduced, the energy consumption is reduced, the number of operators is reduced, the production cost of the copper-aluminum composite bar is finally reduced, and the product quality is improved. The copper-aluminum composite bar is manufactured at low cost, and a high-efficiency and low-cost product is provided for users needing the copper-aluminum composite bar.
Further, for the continuous extrusion machine 30, as shown in fig. 3 and 4, two copper bar extrusion die cavities in the extrusion die 31 are communicated, or the two copper bars divide the clamping groove 313 into two copper bar extrusion die cavities which are communicated with each other left and right, and the two copper bar extrusion die cavities are symmetrically distributed on the left and right sides of the compression position of the two copper bars, so that the extrusion pressures of the two copper bar extrusion die cavities are balanced; the self-lubricating block 34 is arranged at the upper end and the lower end of the clamping groove 313 of the extrusion die 31, a sliding gap is reserved between the self-lubricating block 34 and the copper bar, and the self-lubricating block 34 is arranged at the inlet end of the extrusion die 32. During the starting and working processes of the continuous extruder 30, the self-lubricating block 34 can keep low friction resistance between the copper bar and the extrusion die 31; because of having reserved the sliding gap between self-lubricating piece 34 and the copper bar, so will have a small amount of aluminium to extrude on the upper and lower surface of copper bar in the extrusion bonding process, and then form the aluminium film on the upper and lower surface of two copper bars, make four faces of extrusion die 32 extrude the frictional resistance balanced from this.
Further, as shown in fig. 3 and 4, the continuous extrusion machine 30 further includes a guide die 35 installed in the extrusion die cavity 311, and the guide die 35, the self-lubricating block 34, and the extrusion die 32 are in abutting engagement in this order from the rear to the front. The self-lubricating block 34 is detachably connected with the extrusion die 31 through screws. The rear end side of the guide die 35 of the extrusion die 31 is in threaded connection with an inlet compression bolt 36, the front end of the inlet compression bolt 36 is abutted against the rear end of the guide die 35, the guide die 35 is tightly abutted against the rear end of the self-lubricating block 34, the guide die 35 is fixed in the extrusion die 31, the guide die 35 is detachably connected with the extrusion die 31, and the guide dies 35 of different specifications can be replaced. The extrusion die 31 is in threaded connection with an outlet compression bolt 37 at the front end side of the extrusion die 32, the front end of the outlet compression bolt 37 is abutted against the front end of the extrusion die 32, so that the extrusion die 32 is tightly abutted against the front end of the self-lubricating block 34, the extrusion die 32 is fixed in the extrusion die 31, the extrusion die 32 is detachably connected with the extrusion die 31, and the extrusion dies 32 with different specifications can be replaced. The copper-aluminum proportion is adjusted by replacing the guide die 35, the extrusion die 32 and the self-lubricating block 34 in the extrusion die cavity 311, so that the switching of the copper-aluminum composite double-row 150 specification is realized, and the copper-aluminum composite rows with different specifications can be produced.
Further, gaskets may be disposed between the guide die 35 and the self-lubricating block 34, and between the extrusion die 32 and the self-lubricating block 34, for adjusting a gap between the guide die 35 and the extrusion die 32; or, the gap between the guide die 35 and the extrusion die 32 is adjusted by replacing the self-lubricating blocks 34 with different specifications, so that the stress area of the aluminum on the copper bar is adjusted, the stress area is the extrusion force, and the proper extrusion force is further kept, so that the copper and aluminum are well combined. In addition, a gasket may be disposed between the extrusion die 31 and the double-groove extrusion wheel 33, and is used to adjust a gap between the extrusion die 31 and the double-groove extrusion wheel 33, so as to generate an appropriate leakage amount and achieve stable extrusion.
Further, as shown in fig. 1 and fig. 2, the copper-aluminum composite double-row continuous extrusion production line further includes an aluminum bar straightening machine 70, an aluminum bar surface treatment machine 80, two guide wheels 170 symmetrically distributed left and right, a copper bar straightening and compacting pre-micro-tension machine 90, a copper bar surface treatment machine 110, a copper bar heating protection system 120, a cooling water tank 130, a tension mechanism 140, and a main operation table 160, where the main operation table 160 is a production line linkage control system, control systems of each device on the copper-aluminum composite double-row continuous extrusion production line are in communication connection with the main control table, and the main control table controls each device on the copper-aluminum composite double-row continuous extrusion production line to realize linkage of the whole machine set, including that the traction speed of the traction machine 40 tracks the speed of the continuous extrusion machine 30, the speed of the continuous extrusion machine 30 is matched with the pressure and temperature in the extrusion die cavity 311, and the like. In this embodiment, the aluminum bar straightening machine 70 is a five-wheel flat vertical aluminum bar straightening machine, the aluminum bar surface treatment machine 80 is a high-speed 150-type high-speed wheel polishing machine, the copper bar surface treatment machine 110 is a 200-double-wheel high-speed polishing machine, and the copper bar heating protection system 120 is high-frequency induction heating.
Further, as shown in fig. 1 and 2, the aluminum bar straightening machine 70, the aluminum bar surface treatment machine 80, and the two guide wheels 170 are all disposed between the aluminum bar duplex pay-off stand 10 and the continuous extrusion machine 30, and the aluminum bar duplex pay-off stand 10, the aluminum bar straightening machine 70, the aluminum bar surface treatment machine 80, the two guide wheels 170, and the continuous extrusion machine 30 are sequentially arranged from back to front. The aluminum rod straightening machine 70 and the aluminum rod surface treatment machine 80 are respectively arranged in bilateral symmetry. The aluminum rod straightening machine 70 straightens the oil-free aluminum rod output from the aluminum rod double pay-off rack 10, and has the functions of straightening the aluminum rod and adjusting the aluminum rod to send the tension, thereby balancing the extrusion of two copper bar extrusion die cavities. The aluminum rod surface treatment machine 80 performs surface treatment on the aluminum rod output from the aluminum rod straightening machine 70 to remove oxides on the surface of the aluminum rod. The two guide wheels 170 are respectively in contact with the two aluminum rods to stably feed the aluminum rods into the two extrusion grooves 331 of the double-groove extrusion wheel 33 of the continuous extrusion machine 30.
Further, as shown in fig. 1 and fig. 2, the copper bar straightening and compressing pre-micro-tension machine 90, the copper bar surface treatment machine 110 and the copper bar heating protection system 120 are all arranged between the copper bar double pay-off rack 20 and the continuous extruder 30, and the copper bar double pay-off rack 20, the copper bar straightening and compressing pre-micro-tension machine 90, the copper bar surface treatment machine 110, the copper bar heating protection system 120 and the continuous extruder 30 are sequentially arranged from back to front. The copper bar straightening and compressing pre-micro-tension machine 90 straightens and compresses the copper bars output from the copper bar double pay-off rack 20 and forms pre-micro-tension, so that the two copper bars are compressed together. In addition, the copper bar straightening and pressing pre-micro-tension machine 90 adopts a main transmission pinch roller, the speed can be independently adjusted, and pre-micro-tension is formed on the copper bar; or, the main operating platform 160 can control the linkage between the copper bar straightening and pressing pre-micro-tension machine 90 and the tractor 40 to form pre-micro-tension on the copper bar. Preferably, the copper-aluminum composite double-row continuous extrusion production line is further provided with a differential speed sliding sensor, the differential speed sliding sensor is in communication connection with the main operating platform 160, and in the speed increasing or speed decreasing process of the copper bar transmission speed, the main operating platform 160 controls the operation speed of the copper bar straightening and pressing pre-micro-tension machine 90 and the tractor 40, so that the constant tension of the copper bar can be automatically maintained. The copper bar surface treatment machine 110 performs surface treatment on the copper bar output from the copper bar straightening and pressing pre-micro-tension machine 90 to remove oxides on the surface of the copper bar. The copper bar heating protection system 120 is used for heating the double copper bars and applying protective gas to the surfaces of the double copper bars, the surface temperature of the double copper bars is heated to more than 300 ℃ by the copper bar heating protection system 120, and then the copper bars enter the extrusion die cavity 311 of the extrusion die 31 of the continuous extruder 30 under the protection of the protective gas. The copper bar heating protection system 120 heats the surface temperature of the copper bar to be more than 300 ℃, so that the copper bar is easy to adhere to aluminum, the central temperature of the copper bar rises less, and the copper bar is favorable for keeping certain tensile strength. Preferably, the protective gas is an inert gas, a telescopic tube is connected between the outlet of the copper bar heating protection system 120 and the inlet of the extrusion die cavity 311 in the extrusion die 31, the protective gas in the copper bar heating protection system 120 is applied from the copper bar heating section and is connected with the extrusion die cavity 311 of the extrusion die 31 through the telescopic tube, so that the copper bar before entering the extrusion die cavity 311 is completely in the protective gas, thereby maintaining the clean surface of the copper bar and enabling the copper and the aluminum to be well combined in an extrusion manner.
Further, as shown in fig. 1 and 2, a cooling water tank 130 is provided between the continuous extruder 30 and the tractor 40, and a tension mechanism 140 is provided between the slitter 50 and the collecting and arranging frame 60, that is: the continuous extruder 30, the cooling water tank 130, the tractor 40, the slitter 50, the tension mechanism 140, and the collecting and arranging frame 60 are arranged in this order from the rear to the front. The cooling water tank 130 is used for cooling the copper-aluminum composite double rows 150 extruded and produced by the continuous extruder 30, and the tension mechanism 140 is used for enabling the copper-aluminum composite rows after being cut to form pretension.
Further, as shown in fig. 1, the tractor 40 includes a first traction unit 41 and a second traction unit 42 that are sequentially arranged in parallel from front to back, the first traction unit 41 is used for drawing the copper-aluminum composite double row 150, and the second traction unit 42 is used for drawing the copper bar. The first traction unit 41 and the second traction unit 42 both include two sets of belt type linear traction units arranged up and down oppositely, and each belt type linear traction unit includes a plurality of front and back parallel rotating wheels and a traction belt sleeved on the peripheries of the rotating wheels. The tractor 40 adopts double traction, the first traction unit 41 is stopped and the second traction unit 42 is started at the beginning of starting the copper-aluminum composite double-row continuous extrusion production line, namely the second traction unit 42 is used for starting, clamping and drawing the copper bar forwards; when the copper-aluminum composite double row 150 extruded and produced by the continuous extruder 30 reaches the first traction unit 41, the first traction unit 41 is started; when the copper-aluminum composite double row 150 is discharged forwards from the first traction unit 41, the second traction unit 42 is stopped and loosened, that is, the first traction unit 41 is used in the working stage to clamp and pull the copper-aluminum composite double row 150 forwards. Therefore, the traction machine 40 is provided with a position sensor and a pressure sensor at both the first traction unit 41 and the second traction unit 42. Preferably, the traction belt is a rubber belt, and is in soft contact with the copper bar or the copper-aluminum composite double-row 150, so that damage to the copper-aluminum composite double-row 150 is avoided.
In summary, the production process of the copper-aluminum composite double-row continuous extrusion production line for continuously producing the copper-aluminum composite double-row 150 is as follows:
1. the speed ratio between the second traction unit 42 in the traction machine 40 and the copper bar straightening and pressing pre-micro-tension machine 90 is adjusted, so that the pre-micro-tension of the copper bar is adjusted; when the connection is started, the second traction unit 42 of the traction machine 40 is started and the first traction unit 41 is stopped.
2. Two oil-free aluminum rods are output through the aluminum rod double pay-off rack 10, then are sequentially straightened by the aluminum rod straightening machine 70, and are subjected to surface oxide removal by the aluminum rod surface treatment machine 80, and then are respectively extruded and conveyed to the outer sides of the two copper bar extrusion die cavities in the two extrusion grooves 331 of the double-groove extrusion wheel 33 of the continuous extruder 30 after passing through the guide wheel 170, and the aluminum rods are extruded to be solid-state aluminum melting.
3. Two copper bars with the same specification are output through a copper bar double pay-off rack 20, then are straightened through a copper bar straightening and pressing pre-micro-tension machine 90, and are pressed together after being pressed, and the copper bar straightening and pressing pre-micro-tension machine 90 is linked with a production line to form pre-micro-tension by adopting a driving transmission pinch roller and adjusting speed; removing surface oxides of the two copper bars which are tightly pressed together by a copper bar surface treatment machine 110; then, the copper bar enters the copper bar heating protection system 120, the surface temperature of the double copper bars is heated to more than 300 ℃ by the copper bar heating protection system 120, then the copper bar enters the clamping groove 313 of the extrusion die cavity 311 of the extrusion die 31 of the continuous extruder 30 under the protection of protective gas and is conveyed into the copper bar extrusion die cavity, and the copper bar simultaneously passes through the extrusion die 32 and is wound on the winding frame 60 through the traction of the traction machine 40. In addition, the heating power of the copper bar heating protection system 120 is automatically decreased gradually along with the speed of the copper bar passing through, so that the heating temperature of the copper bar is kept constant.
4. The double aluminum rods enter the copper bar extrusion die cavity through the extrusion groove 331, the two copper bars pressed against each other pass through the guide die 35 and then enter the copper bar extrusion die cavity, the double aluminum rods and the two copper bars pressed against each other enter the extrusion die 32, the aluminum rods are extruded together with the heated copper bars in the extrusion die 32 through heat generated by extrusion deformation to form heat bonding, namely, the copper bars in the copper bar extrusion die cavity and solid-state aluminum melt outside the copper bar extrusion die cavity are combined in the copper bar extrusion die cavity and then enter the extrusion die 32, and copper-aluminum composite double rows 150 are extruded through the extrusion die 32, so that the copper-aluminum composite double rows 150 are produced through continuous extrusion. In addition, the temperature of the aluminum rod entering the double-groove extrusion wheel 33 can rise to about 400 ℃ under the action of friction, and a small amount of aluminum can be extruded into the space between the copper bar and the self-lubricating block 34 at the clamping groove 313 of the extrusion die cavity 311 due to the fact that a sliding gap is reserved between the self-lubricating block 34 and the copper bar, so that aluminum thin films are formed on the upper surface and the lower surface of the two copper bars, and the aluminum thin films enable the two copper bars which are pressed against each other to be connected into a whole. In addition, the extrusion speed of the continuous extruder 30 is tracked, and when the extrusion temperature and pressure of the continuous extruder 30 are too high, which indicates that the extrusion speed of the continuous extruder 30 is too high, the system will automatically alarm and reduce the extrusion speed of the continuous extruder 30. Therefore, the continuous extrusion machine 30 is equipped with a temperature sensor in the cavity of the extrusion die 32 for acquiring the extrusion temperature of the continuous extrusion machine 30.
5. Under the action of the tractor 40, the copper-aluminum composite double-row 150 moves forwards, the copper-aluminum composite double-row 150 directly enters the cooling water tank 130 after coming out of the continuous extruder 30, and the copper-aluminum composite double-row 150 is cooled to be below 80 ℃; when the copper-aluminum composite double row 150 enters the first traction unit 41 of the tractor 40, the first traction unit 41 is automatically started; when the copper-aluminum composite double row 150 is discharged from the second traction unit 42 of the tractor 40, the second traction unit 42 is automatically stopped.
6. Under the action of the tractor 40, the copper-aluminum composite double row 150 moves forwards, and the copper-aluminum composite double row 150 enters the splitting machine 50; an infrared sensor is arranged in the splitting machine 50, so that the splitting machine 50 is automatically started; after the splitting machine 50 is started, the splitting machine 50 splits the aluminum film at the close position of the double copper rows, thereby splitting the copper-aluminum composite double row 150 into two rows of copper-aluminum composite rows which are symmetrical left and right. The slitting depth of the slitting machine 50 is adjustable.
7. Under the action of the tractor 40, the two rows of copper-aluminum composite bars move forward, and the two rows of copper-aluminum composite bars pass through the tension mechanism 140 and then are wound on the winding frame 60.
In conclusion, the method for continuous extrusion production is adopted, aluminum is extruded on the clean surfaces of the left side and the right side of the copper bar at 300-500 ℃ to form good adhesion, and two rows of copper-aluminum composite rows are simultaneously extruded and produced. The method has the advantages of flexible production, arbitrary proportioning of copper and aluminum, simple subsequent processing, small amount of cold rolling or drawing, no annealing in a soft state or low-temperature annealing of finished products only once, small processing amount, short flow, low investment, high efficiency and low cost, and can be used for producing finished products of various specifications. Compared with the prior art, the production efficiency is improved by 50%, the process waste of the chuck head tailing is reduced by 3% -5%, the energy consumption is reduced by 30%, the number of operators is reduced by 2-3, the production cost is reduced, and the product quality is improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (11)
1. A copper-aluminum composite double-row continuous extrusion production line is characterized in that: the method comprises the following steps:
aluminum rod double pay-off rack (10): used for supplying two bilateral aluminum rods;
copper bar double pay-off rack (20): the copper bar is used for supplying two copper bars which are symmetrical left and right;
continuous extruder (30): the copper bar extrusion die comprises an extrusion die (31) with an extrusion die cavity (311), an extrusion die (32) installed in the extrusion die cavity (311), and a double-groove extrusion wheel (33) with an extrusion groove (331), wherein the extrusion die cavity (311) can allow double copper bars to enter, the extrusion die (31) is internally provided with extrusion convex parts (312) which are arranged oppositely up and down and a clamping groove (313) formed between the two extrusion convex parts (312), the clamping groove (313) is provided with two copper bar extrusion die cavities which are arranged symmetrically left and right, the two copper bar extrusion die cavities respectively contain two copper bars, the extrusion grooves (331) on the double-groove extrusion wheel (33) are two and symmetrically distributed on the left side and the right side of the extrusion die cavity (311), and the tail ends of the two extrusion grooves (331) respectively extend to the outer sides of the two copper bar extrusion die cavities;
tractor (40): used for drawing the copper bar or copper-aluminum composite double row (150);
splitting machine (50): the copper-aluminum composite double-row (150) is cut into two rows of copper-aluminum composite rows which are symmetrical left and right at the close position of the double copper bars; and the number of the first and second groups,
a collecting and arranging frame (60): the winding device is used for winding two rows of copper-aluminum composite rows;
follow the direction that aluminium pole and copper bar moved forward, the two pay off rack of aluminium pole (10) and the two pay off rack of copper bar (20) all are located the rear side of continuous extrusion machine (30), tractor (40), cutting machine (50) and receipts are arranged frame (60) and are arranged from the back to the front in proper order.
2. The copper-aluminum composite double-row continuous extrusion production line according to claim 1, characterized in that: the aluminum rod straightening machine is characterized by further comprising an aluminum rod straightening machine (70) and an aluminum rod surface treatment machine (80), wherein the aluminum rod double pay-off rack (10), the aluminum rod straightening machine (70), the aluminum rod surface treatment machine (80) and the continuous extrusion machine (30) are sequentially arranged from back to front.
3. The copper-aluminum composite double-row continuous extrusion production line according to claim 1, characterized in that: still include that the copper bar alignment compresses tightly in advance micro-tension machine (90) and copper bar surface treatment machine (110), the two pay off racks of copper bar (20), copper bar alignment compress tightly in advance micro-tension machine (90), copper bar surface treatment machine (110) and continuous extrusion machine (30) from the back to the front arrange in proper order.
4. The copper-aluminum composite double-row continuous extrusion production line according to claim 3, characterized in that: still include copper bar heating protection system (120), copper bar heating protection system (120) set up between copper bar surface treatment machine (110) and continuous extrusion machine (30), copper bar heating protection system (120) are used for heating two copper bars and apply protective gas to the surface of two copper bars.
5. The copper-aluminum composite double-row continuous extrusion production line according to claim 4, characterized in that: an extension tube is connected between the outlet of the copper bar heating protection system (120) and the inlet of an extrusion die cavity (311) in the extrusion die (31).
6. The copper-aluminum composite double-row continuous extrusion production line according to claim 1, characterized in that: the device also comprises a cooling water tank (130) and a tension mechanism (140), wherein the cooling water tank (130) is arranged between the continuous extruder (30) and the traction machine (40), and the tension mechanism (140) is arranged between the splitting machine (50) and the collecting and arranging frame (60).
7. The copper-aluminum composite double-row continuous extrusion production line according to claim 1, characterized in that: tractor (40) are including first traction unit (41) and second traction unit (42) that set up side by side in proper order from beginning to end, first traction unit (41) are used for pulling compound double (150) of copper aluminium, second traction unit (42) are used for pulling the copper bar.
8. The copper-aluminum composite double-row continuous extrusion production line according to claim 7, characterized in that: first traction unit (41) and second traction unit (42) all include the belt type straight line traction unit of relative setting from top to bottom of two sets of, belt type straight line traction unit includes a plurality of front and back side by side rotation wheel and overlaps and establish the traction area at a plurality of rotation wheel peripheries, the traction area is the rubber tape.
9. The copper-aluminum composite double-row continuous extrusion production line according to claim 1, characterized in that: two copper bar extrusion die cavities in the extrusion die (31) are communicated, self-lubricating blocks (34) are installed at the upper end and the lower end of the clamping groove (313) of the extrusion die (31), a sliding gap is reserved between the self-lubricating blocks (34) and the copper bars, and the self-lubricating blocks (34) are arranged at the inlet end of the extrusion die (32).
10. The copper-aluminum composite double-row continuous extrusion production line according to claim 9, characterized in that: the continuous extrusion machine (30) further comprises a guide die (35) installed in the extrusion die cavity (311), and the guide die (35), the self-lubricating block (34) and the extrusion die (32) are in butt fit in sequence from back to front.
11. A copper-aluminum composite double-row continuous extrusion production process is characterized by comprising the following steps: the use of the copper-aluminum composite double row continuous extrusion production line as defined in any one of claims 1 to 10, said copper-aluminum composite double row continuous extrusion production process comprising the steps of:
s1, supplying two bilaterally symmetrical aluminum rods to the continuous extruder (30) by the aluminum rod double pay-off rack (10), wherein the two aluminum rods respectively enter two extrusion grooves (331) of a double-groove extrusion wheel (33) of the continuous extruder (30) and are conveyed to the outer sides of two copper bar extrusion die cavities;
s2, supplying two copper bars which are bilaterally symmetrical to each other to the continuous extruder (30) through the copper bar double pay-off rack (20), enabling the two copper bars to enter an extrusion die cavity (311) of an extrusion die (31) of the continuous extruder (30) and be conveyed into the copper bar extrusion die cavity, and enabling the copper bars to pass through the extrusion die (32) and be wound on a winding rack (60) through traction of a traction machine (40);
s3, combining the copper bar in the copper bar extrusion die cavity and the solid aluminum melt outside the copper bar extrusion die cavity in the copper bar extrusion die cavity, feeding the combined product into an extrusion die (32), and extruding copper and aluminum composite double rows (150) through the extrusion die (32);
s4, the tractor (40) pulls the copper-aluminum composite double rows (150) forwards;
s5, the copper-aluminum composite double rows (150) pass through a splitting machine (50), and the splitting machine (50) splits the copper-aluminum composite double rows (150) into two rows of copper-aluminum composite rows which are symmetrical left and right at the close position of the double copper rows;
s6, winding the two rows of copper-aluminum composite rows on a row winding frame (60).
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