CN115572857B - High-performance high-copper alloy and preparation method thereof - Google Patents
High-performance high-copper alloy and preparation method thereof Download PDFInfo
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- CN115572857B CN115572857B CN202211291681.2A CN202211291681A CN115572857B CN 115572857 B CN115572857 B CN 115572857B CN 202211291681 A CN202211291681 A CN 202211291681A CN 115572857 B CN115572857 B CN 115572857B
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000000137 annealing Methods 0.000 claims abstract description 50
- 238000005096 rolling process Methods 0.000 claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 48
- 239000000956 alloy Substances 0.000 claims abstract description 48
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 19
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 18
- 239000010941 cobalt Substances 0.000 claims abstract description 18
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005482 strain hardening Methods 0.000 abstract description 6
- 239000013078 crystal Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 229910052797 bismuth Inorganic materials 0.000 abstract description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003009 desulfurizing effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 238000003801 milling Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 238000007545 Vickers hardness test Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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- 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
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention provides a high-performance high-copper alloy and a preparation method thereof, belonging to the technical field of copper alloy. The invention sequentially carries out smelting, casting, hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing on the alloy raw materials to obtain the high-performance high-copper alloy. The addition of cobalt and/or nickel can improve the strength and hardness of the high-copper alloy, the processing plasticity of the high-copper alloy is not obviously reduced, and the rare earth element cerium can play roles in deoxidizing, desulfurizing and dehydrogenating and removing harmful impurities such as lead, bismuth and the like, so that the conductivity and corrosion resistance of the alloy are improved; in the preparation process, low-temperature annealing is carried out after intermediate rolling and finish rolling, so that solute atoms are gathered and locally ordered at the positions of stacking faults and twin crystals, the plasticity of the material is increased while the work hardening effect is maintained, and the obtained high-copper alloy has high hardness, high plasticity and high conductivity.
Description
Technical Field
The invention belongs to the technical field of copper alloy, and particularly relates to a high-performance high-copper alloy and a preparation method thereof.
Background
At present, various connector inserts mostly adopt C14415 high copper alloy, a method for increasing the working rate is generally adopted in the prior art, so that the strength and the hardness of the C14415 high copper alloy are improved, but the strength is usually accompanied by the rapid reduction of plasticity and toughness, the strength of the high-plasticity C14415 high copper alloy is lower, the strength and the plasticity of the high-plasticity C14415 high copper alloy have an inverted relation for a long time, and the conductivity of the C14415 high copper alloy is also lower.
Therefore, how to simultaneously improve the strength, plasticity and conductivity of the C14415 high copper alloy is a difficult problem in the prior art.
Disclosure of Invention
The invention aims to provide a high-performance high-copper alloy and a preparation method thereof. The high-performance high-copper alloy prepared by the preparation method provided by the invention has higher strength, plasticity and conductivity.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a high-performance high-copper alloy, which comprises the following steps:
(1) Smelting alloy raw materials to obtain alloy melt;
(2) Casting the alloy melt obtained in the step (1) to obtain an ingot;
(3) Carrying out hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing on the cast ingot obtained in the step (2) in sequence to obtain a high-performance high-copper alloy;
the high-performance high-copper alloy comprises the following components in percentage by mass: 0.005-0.02% cobalt and/or 0.01-0.03% nickel, 0.1-0.2% tin, 0.01-0.03% cerium and the balance copper.
Preferably, the high-performance high-copper alloy comprises the following components in percentage by mass: 0.01 to 0.02% cobalt and/or 0.015 to 0.03% nickel, 0.1 to 0.2% tin and 0.01 to 0.03% cerium and the balance copper.
Preferably, the temperature of the first low-temperature annealing in the step (3) is 250-290 ℃.
Preferably, the temperature of the first low-temperature annealing in the step (3) is 260-290 ℃.
Preferably, the temperature of the first low-temperature annealing in the step (3) is 270-290 ℃.
Preferably, the time of the first low-temperature annealing in the step (3) is 3-5 h.
Preferably, the time of the first low-temperature annealing in the step (3) is 4-5 h.
Preferably, the temperature rising rate of the temperature rising to the first low-temperature annealing temperature in the step (3) is 1.0-2.0 ℃/min.
Preferably, the finish rolling in the step (3) has a processing rate of 40 to 55%.
The invention also provides the high-performance high-copper alloy prepared by the preparation method.
The invention provides a preparation method of a high-performance high-copper alloy, which comprises the following steps: smelting alloy raw materials to obtain alloy melt; (2) Casting the alloy melt obtained in the step (1) to obtain an ingot; (3) Carrying out hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing on the cast ingot obtained in the step (2) in sequence to obtain a high-performance high-copper alloy; the high-performance high-copper alloy comprises the following components in percentage by mass: 0.005-0.02% cobalt and/or 0.01-0.03% nickel, 0.1-0.2% tin, 0.01-0.03% cerium and the balance copper. The invention is based on C14415 high copper alloy, and nickel and/or cobalt and cerium are added, wherein the cobalt and/or nickel can improve the strength of the C14415 high copper alloyThe degree and hardness of the alloy are not obviously reduced, and the rare earth element cerium can play roles in deoxidizing, desulfurizing and dehydrogenating and removing harmful impurities such as lead, bismuth and the like, so that the conductivity and corrosion resistance of the alloy are improved; in the preparation process, low-temperature annealing is carried out after intermediate rolling and finish rolling, so that solute atoms are gathered and locally ordered at the positions of stacking faults and twin crystals, the metastable state of the alloy, which is caused by cold deformation, is eliminated while the work hardening effect is maintained, the plasticity of the alloy is increased, and the obtained high-performance high-copper alloy has high hardness, high plasticity and high conductivity. The results of the examples show that the Vickers hardness of the high-performance high-copper alloy prepared by the invention is more than 158Hv and the tensile strength is 535N/mm 2 The elongation was 8% or more and the conductivity was 88.9% or more of iacs.
Detailed Description
The invention provides a preparation method of a high-performance high-copper alloy, which comprises the following steps:
(1) Smelting alloy raw materials to obtain alloy melt;
(2) Casting the alloy melt obtained in the step (1) to obtain an ingot;
(3) Carrying out hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing on the cast ingot obtained in the step (2) in sequence to obtain a high-performance high-copper alloy;
the high-performance high-copper alloy comprises the following components in percentage by mass: 0.005-0.02% cobalt and/or 0.01-0.03% nickel, 0.1-0.2% tin, 0.01-0.03% cerium and the balance copper.
The high-performance high-copper alloy provided by the invention comprises 0.005-0.02% of cobalt and/or 0.01-0.03% of nickel, preferably 0.01-0.02% of cobalt and/or 0.015-0.03% of nickel, and more preferably 0.015-0.02% of cobalt and/or 0.02-0.03% of nickel by mass. In the invention, the cobalt and the nickel can play a solid solution strengthening role in the alloy, and can not greatly influence the alloy Jin Suxing, so that the strength and the hardness of the alloy are improved while the plasticity of the alloy is ensured. The invention limits the content of cobalt and nickel in the above range, can further improve the hardness and strength of the alloy, and ensures the good plasticity of the alloy.
The high-performance high-copper alloy provided by the invention comprises 0.1-0.2% of tin, preferably 0.1-0.15% of tin by mass. In the invention, the tin can be dissolved into a copper matrix to play a solid solution strengthening role, so that the mechanical property, heat resistance and corrosion resistance of the alloy are improved. The invention limits the tin content in the above range, and can further improve the mechanical property, corrosion resistance and heat resistance of the alloy.
The high-performance high-copper alloy provided by the invention comprises 0.01-0.03% of cerium, preferably 0.015-0.03% of cerium, and more preferably 0.02-0.03% of cerium by mass. In the invention, the cerium is rare earth element, and can play roles in deoxidizing, desulfurizing, dehydrogenating, removing harmful impurities such as lead, bismuth and the like, and can play a role in refining grains, thereby improving the conductivity, corrosion resistance and mechanical property of the alloy. The invention limits the content of cerium in the above range, which can fully remove harmful impurities and further improve the conductivity, corrosion resistance and mechanical property of the alloy.
The invention firstly smelts alloy raw materials to obtain alloy melt.
The source and the type of the alloy raw material are not particularly limited, and the alloy is selected according to the components of the high-copper alloy.
The smelting operation is not particularly limited, and smelting technical schemes well known to those skilled in the art can be adopted. In the invention, the smelting temperature is preferably 1180-1200 ℃; the smelting time is preferably 3-4 hours.
After the alloy melt is obtained, the alloy melt is cast to obtain an ingot.
The operation of the casting is not particularly limited, and the casting technique known to those skilled in the art may be adopted. In the present invention, the casting is preferably semi-continuous casting.
After the ingot is obtained, the ingot is subjected to hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing in sequence, so that the high-performance high-copper alloy is obtained.
The ingot is preferably heated and then insulated, and then hot rolled.
In the invention, the temperature of the heat preservation is preferably 880-900 ℃, more preferably 890-900 ℃; the time for the heat preservation is preferably 4 to 5 hours, more preferably 4.5 to 5 hours. In the invention, the heat preservation can ensure the high-temperature plasticity required during hot rolling, reduce deformation resistance, eliminate cast ingot stress, improve the structure state and performance of the alloy, and ensure that the whole temperature of the cast ingot is uniform, thereby being convenient for subsequent hot rolling treatment.
The operation of the hot rolling is not particularly limited, and the hot rolling method is known to those skilled in the art.
In the present invention, the deformation amount of the hot rolling is preferably 90 to 92%; the number of hot rolling passes is preferably 12-14; the cooling mode of the hot rolling is preferably spraying and natural cooling.
After the hot rolling is completed, the hot rolled product is preferably subjected to face milling and then rough rolling. The invention is not particularly limited to the operation of milling the surface, and the technical scheme of milling the surface, which is well known to the person skilled in the art, can be adopted.
In the invention, the rough rolling, the intermediate rolling and the finish rolling are all cold rolling.
The rough rolling operation is not particularly limited, and the rough rolling technical scheme well known to those skilled in the art can be adopted. In the present invention, the deformation amount of the rough rolling is preferably 90 to 91%; the deformation pass of the rough rolling is preferably 7-8. In the present invention, the rough rolling causes work hardening of the strip, and the hardness increases and the plasticity decreases.
In the present invention, the deformation amount of the intermediate rolling is preferably 83 to 84%; the deformation pass of the intermediate rolling is preferably 4. In the invention, the intermediate rolling can improve the mechanical properties of the alloy.
In the present invention, the temperature of the first low-temperature annealing is preferably 250 to 290 ℃, more preferably 260 to 280 ℃, and most preferably 270 to 280 ℃; the time of the first low-temperature annealing is preferably 3 to 5 hours, more preferably 3 to 4 hours; the temperature rising rate of the temperature rising to the first low-temperature annealing temperature is preferably 1.0 to 2.0 ℃/min, more preferably 1 ℃/min. In the invention, the first low-temperature annealing enables solute atoms to be gathered and locally ordered at the positions of stacking faults and twin crystals, and the plasticity of the material is improved while the work hardening effect is maintained. The invention limits the parameters such as the temperature, time and the like of the first low-temperature annealing within the above range, and can further improve the hardness and the plasticity of the alloy.
In the present invention, the finish rolling preferably has a reduction ratio of 40 to 55%, more preferably 40 to 45%. In the invention, the finish rolling can harden the material by cold deformation and improve the hardness of the alloy. The invention limits the processing rate of finish rolling within the above range, and can further improve the mechanical properties of the alloy.
In the present invention, the temperature of the second low-temperature annealing is preferably 250 to 290 ℃, more preferably 260 to 280 ℃, and most preferably 270 to 280 ℃; the time of the second low-temperature annealing is preferably 3 to 5 hours, more preferably 3 to 4 hours; the temperature rise rate of the temperature rise to the second low-temperature annealing temperature is preferably 1.0 to 2.0 ℃/min, more preferably 1 ℃/min. In the invention, the cooling stage of the second low-temperature annealing is preferably water cooling at a temperature lower than 150 ℃ and discharging at a temperature of 60 ℃. In the invention, the second low-temperature annealing enables solute atoms to be gathered and locally ordered at the positions of stacking faults and twin crystals, and increases the plasticity of the material while retaining the work hardening effect. The invention limits the parameters of temperature, time and the like of the second low-temperature annealing in the above range, and can further improve the plasticity of the alloy.
After the second low-temperature annealing is finished, the invention preferably carries out surface cleaning on the product of the second low-temperature annealing to obtain the high-performance high-copper alloy. The surface cleaning operation is not particularly limited, and the surface cleaning method can be adopted by a technical scheme well known to a person skilled in the art.
In the present invention, the operations of finish rolling and low temperature annealing are preferably repeated a plurality of times, but each finish rolling is followed by low temperature annealing. The number of repetition is not particularly limited, and can be selected according to actual needs. In the present invention, the number of repetitions is preferably 2 to 4, more preferably 2 to 3.
According to the invention, based on the C14415 high copper alloy, cobalt and/or nickel are added to improve the strength and hardness of the C14415 high copper alloy, the processing plasticity of the C14415 high copper alloy is not obviously reduced, and cerium is added to play roles in deoxidizing, desulfurizing, dehydrogenating, removing harmful impurities such as lead and bismuth and refining grains, so that the conductivity, corrosion resistance and mechanical property of the alloy are improved; in the preparation process, low-temperature annealing is carried out after intermediate rolling and finish rolling, so that solute atoms are gathered and locally ordered at the positions of stacking faults and twin crystals, the plasticity of the alloy is increased while the work hardening effect is maintained, and the composition, the consumption and the technological parameters in the preparation process of each component are controlled, so that the obtained high-copper alloy has high hardness, high plasticity and high conductivity.
The invention also provides the high-performance high-copper alloy prepared by the preparation method.
The high-performance high-copper alloy provided by the invention has high hardness, high strength, high plasticity and high conductivity.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The high-performance high-copper alloy of the embodiment comprises the following components in percentage by mass: 0.012 percent cobalt, 0.15 percent tin, 0.021 percent cerium and the balance copper are proportioned according to the composition of the high copper alloy to obtain alloy raw materials, the alloy raw materials are smelted at 1200 ℃ for 3 hours and then semi-continuously cast to produce a casting blank with the thickness of 240mm, then the casting blank is heated at 890 ℃ for 4.5 hours by a stepping heating furnace, then hot rolled to a blank with the thickness of 20mm, then face milling is carried out, the thickness of 19mm after milling is carried out, rough rolling is carried out to 1.8mm, medium rolling is carried out, rolling is carried out to 0.3mm, the blank is carried out to a hood-type annealing furnace, first low-temperature annealing (290 ℃ for 3 hours, the heating rate is 1.0 ℃/min, the cooling stage is lower than 150 ℃ for water cooling, the strip is carried out at the processing rate of 40%, the finish rolling is carried out to 0.18mm, second low-temperature annealing (270 ℃ for 3 hours, the heating rate is lower than 150 ℃ for water cooling, the cooling stage is lower than 150 ℃ for 60 ℃), the strip is carried out at the processing rate of 45%, and finally each time of finish rolling is carried out to finish rolling, and each time is finished product is finished after the annealing is carried out.
Example 2
The high-performance high-copper alloy of the embodiment comprises the following components in percentage by mass: 0.022% nickel, 0.15% tin, 0.026% cerium and the balance copper, all other parameters being the same as in example 1.
Example 3
The high-performance high-copper alloy of the embodiment comprises the following components in percentage by mass: 0.011% cobalt and 0.024% nickel, and 0.15% tin, 0.025% cerium and the balance copper, all other parameters being the same as in example 1.
Comparative example 1
Cerium and cobalt were omitted from example 1, and the other parameters were the same as in example 1.
Comparative example 2
The high copper alloy of the comparative example was rolled to 0.3mm, transferred to a hood-type annealing furnace, and subjected to a first full recrystallization annealing (400-450 ℃ C., 5h, a heating rate of 1.0 ℃/min, a cooling stage of less than 150 ℃ C., water cooling, and tapping below 60 ℃ C.) with other parameters being the same as in example 1.
The first part of the Vickers hardness test of metal materials is adopted in GB/T4340.1-2009: test methods, first part of the tensile test for metallic materials, GB/T228.1-2021: room temperature test method and GB/T3048.2-2007 second part of wire and cable electrical Performance test method: the metal material resistivity test tests the alloys prepared in examples 1 to 3 and comparative examples 1 and 2 were tested for vickers hardness, tensile strength, elongation and conductivity, and the results are shown in table 1.
Table 1 mechanical and electrical properties of the alloys prepared in examples 1 to 3, comparative example 1 and comparative example 2
As can be seen from Table 1, the alloys prepared in examples 1 to 3 have higher Vickers hardness, tensile strength, elongation and conductivity than the alloys prepared in comparative examples 1 and 2.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. The preparation method of the high-performance high-copper alloy comprises the following steps:
(1) Smelting alloy raw materials to obtain alloy melt;
(2) Casting the alloy melt obtained in the step (1) to obtain an ingot;
(3) Carrying out hot rolling, rough rolling, middle rolling, first low-temperature annealing, finish rolling and second low-temperature annealing on the cast ingot obtained in the step (2) in sequence to obtain a high-performance high-copper alloy;
the high-performance high-copper alloy comprises the following components in percentage by mass: 0.005-0.02% cobalt and/or 0.01-0.03% nickel, 0.1-0.2% tin, 0.01-0.03% cerium and the balance copper;
the temperature of the first low-temperature annealing in the step (3) is 250-290 ℃; the time of the first low-temperature annealing in the step (3) is 3-5 h; the temperature rising rate of the temperature rising to the first low-temperature annealing temperature in the step (3) is 1.0-2.0 ℃/min;
the temperature of the second low-temperature annealing in the step (3) is 250-290 ℃; the time of the second low-temperature annealing in the step (3) is 3-5 h; and (3) heating to the second low-temperature annealing temperature in the step (3) at a heating rate of 1.0-2.0 ℃/min.
2. The preparation method according to claim 1, wherein the high-performance high-copper alloy comprises the following components in mass content: 0.01 to 0.02% cobalt and/or 0.015 to 0.03% nickel, 0.1 to 0.2% tin and 0.01 to 0.03% cerium and the balance copper.
3. The method according to claim 1, wherein the temperature of the first low-temperature annealing in the step (3) is 260 to 290 ℃.
4. A method according to claim 3, wherein the temperature of the first low temperature anneal in step (3) is 270 to 290 ℃.
5. The method according to claim 1, wherein the time for the first low temperature annealing in the step (3) is 4 to 5 hours.
6. The method according to claim 1 or 2, wherein the finish rolling in the step (3) has a processing rate of 40 to 55%.
7. The high-performance high-copper alloy prepared by the preparation method according to any one of claims 1 to 6.
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| CN107034381B (en) * | 2017-04-26 | 2019-03-19 | 江西理工大学 | A kind of Cu-Ni-Co-Sn-P copper alloy and preparation method thereof |
| CN110814029B8 (en) * | 2019-10-25 | 2020-10-02 | 菏泽广源铜带有限公司 | Rolling method of 6-micron high-strength rolled copper foil |
| CN114536018B (en) * | 2020-11-26 | 2023-05-09 | 中铝洛阳铜加工有限公司 | Preparation technology for improving bending forming of copper-tin alloy strip |
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