CN109201767A - A kind of production technology of power battery tab copper strips - Google Patents
A kind of production technology of power battery tab copper strips Download PDFInfo
- Publication number
- CN109201767A CN109201767A CN201811134773.3A CN201811134773A CN109201767A CN 109201767 A CN109201767 A CN 109201767A CN 201811134773 A CN201811134773 A CN 201811134773A CN 109201767 A CN109201767 A CN 109201767A
- Authority
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- China
- Prior art keywords
- copper strips
- copper
- rolling
- annealing
- strips
- Prior art date
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 149
- 239000010949 copper Substances 0.000 title claims abstract description 149
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 238000004140 cleaning Methods 0.000 claims abstract description 33
- 238000000137 annealing Methods 0.000 claims abstract description 32
- 238000000227 grinding Methods 0.000 claims abstract description 32
- 238000005097 cold rolling Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 27
- 238000005238 degreasing Methods 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 12
- 239000000839 emulsion Substances 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 229910052738 indium Inorganic materials 0.000 claims description 7
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- LLPOLZWFYMWNKH-CMKMFDCUSA-N hydrocodone Chemical compound C([C@H]1[C@H](N(CC[C@@]112)C)C3)CC(=O)[C@@H]1OC1=C2C3=CC=C1OC LLPOLZWFYMWNKH-CMKMFDCUSA-N 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 241001124569 Lycaenidae Species 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- HAUBPZADNMBYMB-UHFFFAOYSA-N calcium copper Chemical compound [Ca].[Cu] HAUBPZADNMBYMB-UHFFFAOYSA-N 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 3
- 235000014987 copper Nutrition 0.000 claims description 3
- BVSORMQQJSEYOG-UHFFFAOYSA-N copper niobium Chemical compound [Cu].[Cu].[Nb] BVSORMQQJSEYOG-UHFFFAOYSA-N 0.000 claims description 3
- GBAOZECSOKXKEL-UHFFFAOYSA-N copper yttrium Chemical compound [Cu].[Y] GBAOZECSOKXKEL-UHFFFAOYSA-N 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000010946 fine silver Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 3
- 238000003860 storage Methods 0.000 claims 3
- 239000002759 woven fabric Substances 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- OPHUWKNKFYBPDR-UHFFFAOYSA-N copper lithium Chemical compound [Li].[Cu] OPHUWKNKFYBPDR-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to a kind of production technologies of power battery tab copper strips, in percentage by weight, the production technology of copper strips is: above drawing copper bar, continuously extruded, cold rolling, cleaning grinding, annealing, cleaning grinding, finish rolling, cleaning grinding, annealing, cleaning grinding, aligning, cutting.The tensile strength 220-230MPa, elongation >=50%, conductivity >=99%IACS, softening temperature >=300 DEG C of copper strips are prepared, oxygen content≤3ppm, surface average roughness is less than 0.1 μm.
Description
Technical field
The present invention relates to the technical fields of non-ferrous metals processing, more particularly, to a kind of life of power battery tab copper strips
Production. art.
Background technique
With the high speed development of new-energy automobile and energy-storage system, the market demand of battery pole ear constantly expands.Battery pole
Unfamiliar to the ear production mostly uses copper strips electroplating technology greatly, and the copper strips quality as substrate directly affects the quality of tab after plating.Currently, often
The problem of battery pole ear is primarily present with copper strips is: product surface consistency is poor, cause plating after there are color difference, color spots etc.
Surface defect；Product surface finish is poor, and coating adhesion is low after plating.
Patent CN 201710866137.9 provides a kind of preparation method of new energy car battery tab copper strips,
Including techniques such as melting, casting, hot rollings, there are the deficiencies such as high energy consumption and efficiency is low.
Summary of the invention
The purpose of the present invention is to provide a kind of production technology of power battery tab copper strips, use is prepared by the present invention
Power battery tab with copper strips in percentage by weight, indium content 0.01%, yttrium content 0.002%, calcium content
0.002%, the tensile strength 220-230MPa of power battery tab copper strips, content of niobium 0.002%, lithium content 0.002% is stretched
Long rate >=50%, conductivity >=99%IACS, softening temperature >=300 DEG C, oxygen content≤3ppm, surface average roughness are less than
0.1μm.Production technology provided by the invention has the characteristics that short process flow, high production efficiency, has excellent performance.
In order to achieve the above objectives, the technical scheme is that
A kind of production technology of power battery tab copper strips, includes the following steps:
1) draw copper bar on: by A grades of high purity coppers, fine silver, copper and indium intermediate alloy, copper yttrium intermediate alloy, copper calcium intermediate alloy, copper
Niobium intermediate alloy, copper lithium intermediate alloy, pre-heating drying, which is placed in smelting apparatus, to be melted, and covers copper using charcoal and graphite flakes
Liquid surface, through after the degasification of line depassing unit, deoxidation, with copper bar is drawn on traction link seat, then copper bar enters take-up；
2) continuously extruded: using the copper bar prepared in step 1) as raw material, copper strip billet being produced using continuously extruded unit；Continuously
Extruder revolving speed is 3.2r/min, and the width of copper strip billet is 320mm, and with a thickness of 20mm, the lateral tolerance of copper strip billet is less than
0.01mm；The passage length of continuous extrusion copper strip billet cavity is 100mm, and the gap of cavity and extruding wheel is 1.0mm, and cavity makes
It is first preheated with preceding, preheating temperature is 470 DEG C, and preheating time is 5 hours；Continuous extrusion copper strip billet is with mold thickness
50mm, the modular angle of mold are 10 °, and the sizing strip length of mold is 10mm；
3) cold rolling: rolling copper strips blank using cold mill complex, and rolling pass working modulus is 36~40%, rolling pressure
Power≤3000KN, mill speed≤100m/min roll 50~55KN of forward pull, 61~75KN of backward pull；Last a time
The forward pull for rolling copper strips is 20KN, and rolling backward pull is 25KN, mill speed 80m/min；5% emulsion is used when rolling
Cooling and lubricating is carried out, the remaining emulsion of copper strip surface after rolling is removed using vacuum hydrocone type squeezing machine, and will using air knife
The surface purging of copper strips is clean before batching.
4) cleaning grinding: carrying out cleaning grinding for the copper strips after cold rolling, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 3500 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
5) it anneals: being annealed using bright annealing equipment to copper strips after cold rolling, annealing temperature is 350 DEG C, annealing time
6h；For bright annealing equipment using hydrogen as protective gas, heating rate is 50 DEG C/h, 12 hours cooling times；Annealing
Afterwards, the tensile strength 220-230MPa of copper strips, elongation percentage are greater than 50%, and the grain size of copper strips is 0.016-0.025mm.
6) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 3500 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
7) finish rolling: finish rolling is carried out to copper strips using reversible hydraulic cold mill complex, pass reduction is 25~30%, rolling
Forward pull is 15-20KN, the backward pull of rolling copper strips is 16-25KN.Cooling and lubricating is carried out using 5% emulsion when rolling, is adopted
The remaining emulsion of copper strip surface after rolling is removed with vacuum hydrocone type squeezing machine, and the surface of preceding copper strips will be batched using air knife
Purging is clean.
8) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 4000 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
9) it anneals: being annealed using air cushion furnace annealing device to copper strips after cold rolling, using hydrogen as protective gas, moved back
After fire, the tensile strength 220-230MPa of copper strips, elongation percentage is greater than 50%, and the grain size of copper strips is 0.010-0.015mm.
10) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye,
Degreasing liquid reserve tank uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, using the needle brush rough polishing of 1000 mesh and 4000
Mesh nonwoven fabric brush carries out smart throwing, makes copper strip surface mean roughness less than 0.1 μm.
11) it aligns: copper strips template being controlled using aligning unit；Forward pull control is aligned in 0.6-0.7KN, post-tensioning
The template of power control copper strips after 0.4-0.5KN, aligning is less than 5I；
12) it cuts: copper strips being cut using cutting apparatus, the gap blade of cutting is 0.03mm, the pressure of cutter shaft
Amount is 0.20mm, and the side camber degree of every meter of copper strips is less than 1mm, and the transverse curvature degree of every meter of copper strips is less than 1mm, every meter of copper strips
Torsion resistance is less than 5 °.
The beneficial effects of the present invention are: by using a kind of production work of power battery tab copper strips provided by the invention
Skill has the advantage that
1. the microelements such as present invention addition indium, yttrium, calcium, niobium, lithium, improve welding performance, softening temperature and the electricity of copper strips
Rear surface uniform color is plated, while guaranteeing the electric conductivity of copper strips.
2. the present invention improves copper strip surface quality, the surface for reducing copper strips is thick using the technique of the cleaning grinding of multi-pass
Rugosity, color is uniform after copper strips is electroplated.
3. the present invention uses continuous up-casting, continual extruding technology, hot rolling can not be used, a large amount of energy consumption is saved.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
The object of the present invention is to provide a kind of production technologies of power battery tab copper strips, include the following steps:
1) draw copper bar on: by A grades of high purity coppers, fine silver, copper and indium intermediate alloy, copper yttrium intermediate alloy, copper calcium intermediate alloy, copper
Niobium intermediate alloy, 1 bronze medal lithium intermediate alloy, pre-heating drying, which is placed in smelting apparatus, to be melted, and is covered using charcoal and graphite flakes
Copper liquid surface, through after the degasification of line depassing unit, deoxidation, with copper bar is drawn on traction link seat, then copper bar enters take-up；
2) continuously extruded: using the copper bar prepared in step 1) as raw material, copper strip billet being produced using continuously extruded unit；Continuously
Extruder revolving speed is 3.2r/min, and the width of copper strip billet is 320mm, and with a thickness of 20mm, the lateral tolerance of copper strip billet is less than
0.01mm；The passage length of continuous extrusion copper strip billet cavity is 100mm, and the gap of cavity and extruding wheel is 1.0mm, and cavity makes
It is first preheated with preceding, preheating temperature is 470 DEG C, and preheating time is 5 hours；Continuous extrusion copper strip billet is with mold thickness
50mm, the modular angle of mold are 10 °, and the sizing strip length of mold is 10mm；
3) cold rolling: rolling copper strips blank using cold mill complex, and rolling pass working modulus is 36~40%, rolling pressure
Power≤3000KN, mill speed≤100m/min roll 50~55KN of forward pull, 61~75KN of backward pull；Last a time
The forward pull for rolling copper strips is 20KN, and rolling backward pull is 25KN, mill speed 80m/min；5% emulsion is used when rolling
Cooling and lubricating is carried out, the remaining emulsion of copper strip surface after rolling is removed using vacuum hydrocone type squeezing machine, and will using air knife
The surface purging of copper strips is clean before batching.
4) cleaning grinding: carrying out cleaning grinding for the copper strips after cold rolling, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 3500 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
5) it anneals: being annealed using bright annealing equipment to copper strips after cold rolling, annealing temperature is 350 DEG C, annealing time
6h；For bright annealing equipment using hydrogen as protective gas, heating rate is 50 DEG C/h, 12 hours cooling times；Annealing
Afterwards, the tensile strength 220-230MPa of copper strips, elongation percentage are greater than 50%, and the grain size of copper strips is 0.016-0.025mm.
6) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 3500 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
7) finish rolling: finish rolling is carried out to copper strips using reversible hydraulic cold mill complex, pass reduction is 25~30%, rolling
Forward pull is 15-20KN, the backward pull of rolling copper strips is 16-25KN.Cooling and lubricating is carried out using 5% emulsion when rolling, is adopted
The remaining emulsion of copper strip surface after rolling is removed with vacuum hydrocone type squeezing machine, and the surface of preceding copper strips will be batched using air knife
Purging is clean.
8) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye, takes off
Rouge liquid reserve tank uses oily water separation technique, and alkali liquid temperature controls the rough polishing of needle brush and 4000 mesh at 20-25 DEG C, using 1000 mesh
Nonwoven fabric brush carries out smart throwing.
9) it anneals: being annealed using air cushion furnace annealing device to copper strips after cold rolling, using hydrogen as protective gas, moved back
After fire, the tensile strength 220-230MPa of copper strips, elongation percentage is greater than 50%, and the grain size of copper strips is 0.010-0.015mm.
10) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing to copper strips using 20% lye,
Degreasing liquid reserve tank uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, using the needle brush rough polishing of 1000 mesh and 4000
Mesh nonwoven fabric brush carries out smart throwing, makes the surface average roughness of copper strips less than 0.1 μm.
11) it aligns: copper strips template being controlled using aligning unit；Forward pull control is aligned in 0.6-0.7KN, post-tensioning
The template of power control copper strips after 0.4-0.5KN, aligning is less than 5I；
12) it cuts: copper strips being cut using cutting apparatus, the gap blade of cutting is 0.03mm, the pressure of cutter shaft
Amount is 0.20mm, and the side camber degree of every meter of copper strips is less than 1mm, and the transverse curvature degree of every meter of copper strips is less than 1mm, every meter of copper strips
Torsion resistance is less than 5 °.
The indium content of power battery tab copper strips prepared by the present invention is 0.01%, yttrium content 0.002%, calcium content
0.002%, the tensile strength 220-230MPa of power battery tab copper strips, content of niobium 0.002%, lithium content 0.002% is stretched
Long rate >=50%, conductivity >=99%IACS, softening temperature >=300 DEG C, oxygen content≤3ppm, surface average roughness are less than
0.1μm。
Claims (2)
1. a kind of production technology of power battery tab copper strips, it is characterised in that: the power battery tab is pressed with copper strips
According to weight percent meter, indium content 0.01%, yttrium content 0.002%, calcium content 0.002%, content of niobium 0.002%, lithium contains
Amount 0.002%, tensile strength 220-230MPa, elongation >=50%, conductivity >=99% of power battery tab copper strips
IACS, softening temperature >=300 DEG C, oxygen content≤3ppm, surface average roughness is less than 0.1 μm；The power battery tab
It is with the production technology of copper strips: above draws copper bar, continuously extruded, cold rolling, cleaning grinding, annealing, cleaning grinding, finish rolling, cleaning are ground
Mill, annealing, cleaning grinding, aligning, cutting.
2. a kind of production technology of power battery tab copper strips as described in claim 1, it is characterised in that: specific steps are such as
Under:
1) draw copper bar on: will be in A grades of high purity coppers, fine silver, copper and indium intermediate alloy, copper yttrium intermediate alloy, copper calcium intermediate alloy, copper niobium
Between alloy, 1 bronze medal lithium intermediate alloy, pre-heating drying, which is placed in smelting apparatus, to be melted, and covers copper liquid using charcoal and graphite flakes
Surface, through after the degasification of line depassing unit, deoxidation, with copper bar is drawn on traction link seat, then copper bar enters take-up；
2) continuously extruded: using the copper bar prepared in step 1) as raw material, copper strip billet being produced using continuously extruded unit；It is continuously extruded
Machine revolving speed is 3.2r/min, and the width of copper strip billet is 320mm, and with a thickness of 20mm, the lateral tolerance of copper strip billet is less than 0.01mm；Even
The continuous passage length for squeezing copper strip billet cavity is 100mm, and the gap of cavity and extruding wheel is 1.0mm, and cavity uses preceding advanced
Row preheating, preheating temperature are 470 DEG C, and preheating time is 5 hours；Continuous extrusion copper strip billet is 50mm with mold thickness, mold
Modular angle is 10 °, and the sizing strip length of mold is 10mm；
3) cold rolling: rolling copper strips blank using cold mill complex, and rolling pass working modulus is 36~40%, and draught pressure≤
3000KN, mill speed≤100m/min roll 50~55KN of forward pull, 61~75KN of backward pull；The rolling of last a time
The forward pull of copper strips is 20KN, and rolling backward pull is 25KN, mill speed 80m/min；It is carried out when rolling using 5% emulsion
Cooling and lubricating is removed the remaining emulsion of copper strip surface after rolling using vacuum hydrocone type squeezing machine, and will be batched using air knife
The surface purging of preceding copper strips is clean；
4) cleaning grinding: carrying out cleaning grinding for the copper strips after cold rolling, carries out degreasing, degreasing storage to copper strips using 20% lye
Liquid case uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, do not knitted using the rough polishing of needle brush and 3500 mesh of 1000 mesh
Cloth brush carries out smart throwing；
5) it anneals: being annealed using bright annealing equipment to copper strips after cold rolling, annealing temperature is 350 DEG C, annealing time 6h；Light
For bright annealing device using hydrogen as protective gas, heating rate is 50 DEG C/h, 12 hours cooling times；After annealing, copper strips
Tensile strength 220-230MPa, elongation percentage is greater than 50%, and the grain size of copper strips is 0.016-0.025mm；
6) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing, degreasing storage to copper strips using 20% lye
Liquid case uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, do not knitted using the rough polishing of needle brush and 3500 mesh of 1000 mesh
Cloth brush carries out smart throwing；
7) finish rolling: finish rolling is carried out to copper strips using reversible hydraulic cold mill complex, pass reduction is 25~30%, the toe-out of rolling
Power is 15-20KN, the backward pull of rolling copper strips is 16-25KN.Cooling and lubricating is carried out using 5% emulsion when rolling, using true
Empty hydrocone type squeezing machine removes the remaining emulsion of copper strip surface after rolling, and is purged using the surface that air knife will batch preceding copper strips
Completely；
8) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing, degreasing storage to copper strips using 20% lye
Liquid case uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, do not knitted using the rough polishing of needle brush and 4000 mesh of 1000 mesh
Cloth brush carries out smart throwing；
9) it anneals: being annealed using air cushion furnace annealing device to copper strips after cold rolling, using hydrogen as protective gas, annealing
Afterwards, the tensile strength 220-230MPa of copper strips, elongation percentage are greater than 50%, and the grain size of copper strips is 0.010-0.015mm；
10) cleaning grinding: carrying out cleaning grinding for the copper strips after annealing, carries out degreasing, degreasing to copper strips using 20% lye
Liquid reserve tank uses oily water separation technique, and alkali liquid temperature is controlled at 20-25 DEG C, not using the needle brush rough polishing of 1000 mesh and 4000 mesh
Woven fabric brush carries out smart throwing；
11) it aligns: copper strips template being controlled using aligning unit；Forward pull control is aligned in 0.6-0.7KN, backward pull control
The template for making the copper strips after 0.4-0.5KN, aligning is less than 5I；
12) it cuts: copper strips being cut using cutting apparatus, the gap blade of cutting is 0.03mm, and the drafts of cutter shaft is
0.20mm, the side camber degree of every meter of copper strips are less than 1mm, and the transverse curvature degree of every meter of copper strips is less than 1mm, the distortion of every meter of copper strips
Degree is less than 5 °.
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| CN110076210A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of relay high-fire resistance copper strips |
| CN110076209A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of copper for relay band |
| CN110076211A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of the high Erichsen number copper strips of heat exchanger |
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| CN110076210A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of relay high-fire resistance copper strips |
| CN110076209A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of copper for relay band |
| CN110076211A (en) * | 2019-05-13 | 2019-08-02 | 浙江力博实业股份有限公司 | A kind of preparation method of the high Erichsen number copper strips of heat exchanger |
| CN110090875A (en) * | 2019-05-13 | 2019-08-06 | 浙江力博实业股份有限公司 | A kind of preparation method of heat exchanger copper strips |
| CN110385351A (en) * | 2019-07-17 | 2019-10-29 | 绍兴市力博科技有限公司 | A kind of production method of section copper strip |
| CN110385352A (en) * | 2019-07-17 | 2019-10-29 | 绍兴市力博科技有限公司 | A kind of production method of the special-shaped copper alloy belt of connector |
| CN110385350A (en) * | 2019-07-17 | 2019-10-29 | 绍兴市力博科技有限公司 | A kind of production method of abnormal shape copper alloy belt |
| CN110385352B (en) * | 2019-07-17 | 2021-01-19 | 浙江力博实业股份有限公司 | Production method of special-shaped copper alloy strip for connector |
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| CN110423967A (en) * | 2019-08-13 | 2019-11-08 | 宁波金田铜业(集团)股份有限公司 | A kind of shielding processing technology of Zn-Cu-Ni alloy strip |
| CN110423967B (en) * | 2019-08-13 | 2020-10-23 | 宁波金田铜业(集团)股份有限公司 | Processing technology of zinc-copper-nickel strip for shielding |
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