CN107034381B - A kind of Cu-Ni-Co-Sn-P copper alloy and preparation method thereof - Google Patents
A kind of Cu-Ni-Co-Sn-P copper alloy and preparation method thereof Download PDFInfo
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- CN107034381B CN107034381B CN201710283344.1A CN201710283344A CN107034381B CN 107034381 B CN107034381 B CN 107034381B CN 201710283344 A CN201710283344 A CN 201710283344A CN 107034381 B CN107034381 B CN 107034381B
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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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
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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
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- 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
Abstract
This application discloses a kind of Cu-Ni-Co-Sn-P copper alloys, component including following weight percent: the component including following weight percent: 0.2%~1.0% Ni, 0.5%~1.5% Sn, 0.2%~1.0% Co, 0.001%~0.01% P, remaining is Cu.Its tensile strength sigma b can reach 550~700MPa, plastic elongation rate δ is 8%~15%, conductivity is 35%~45%IACS, (120 DEG C of stress relaxation resistance, 1000h) >=95%, resist soft performance (450 DEG C, 3min) >=150HV, percent thermal shrinkage (450 DEG C, 1min)≤0.01%.The invention also discloses a kind of preparation methods of Cu-Ni-Co-Sn-P copper alloy.
Description
Technical field
The present invention relates to Cu alloy material technical fields, more particularly, to a kind of Cu-Ni-Co-Sn-P copper alloy and its system
Preparation Method.
Background technique
With the fast development of the relevant informations industry such as telecommunications, the demand to integrated circuit is increasing, while right
Its requirement is also higher and higher.The core of hyundai electronics information technology is integrated circuit, chip and the encapsulated formation collection of lead frame
At circuit.As the primary structural material of integrated antenna package, lead frame plays an important role in circuit, such as carries
The effects of chip, connection chip and outside line plate electric signal, installation are fixed.Its major function has: connection external circuit and biography
Pass electric signal；It outwardly radiates, plays conductive force；The effect of chip is supported and fixed, shell overally supports frame structure
Assembled by IC, protects internal component.As it can be seen that lead frame acted in integrated circuit device and each assembly program it is huge
Greatly, thermally conductive blaster fuse frame material, conductive, intensity, hardness, high softening temperature, heat resistance, inoxidizability, resistance to how is effectively improved
Corrosion, weldability, plastic packaging, alternating bending and machine-shaping property etc. have become more prominent in integrated circuit development process
Problem.
Electronics and IT products constantly to miniaturization, slimming, lightweight, high speed, multifunction and intelligent development, and
Integrated circuit develops to extensive and ultra-large direction, promotes lead frame towards the miniaturization of lead pitch, the side of multiway
To development.This requires the various performances of blaster fuse frame material are more excellent and comprehensive.Main saliency is in following several respects: lead
The micromation of frame requires it that should have higher intensity and hardness；High integration, the densification of integrated circuit distribute it
Unit volume heat it is more, this requires blaster fuse frame materials superior thermal conductivity；It can be made in view of capacitor and inductive effect
At adverse effect, good electric conductivity is the prerequisite performance of blaster fuse frame material.In addition to this, it also needs to have good anti-
Soften, the performance requirement of low percent thermal shrinkage.
Copper-based lead frame mainly has several alloys such as C19210, C19400 and C70250 on domestic market, wherein
C19210 alloy conductive rate is greater than 80%IACS, but intensity only has 400MPa or so, can not meet large scale integrated circuit to strong
The requirement of degree limits it and further uses；And C19400 alloy conductive rate be greater than 60%IACS, tensile strength reach 450~
600MPa is not able to satisfy the intensity of super large-scale integration and the growth requirement of multiway still, and which are mainly applied to low and middle-ends
Blaster fuse frame material；C70250 alloy is a kind of high-end integrated circuit blaster fuse frame material, and conductivity is about 45%
IACS, tensile strength are greater than 600MPa, but this alloy is in process of production, needs special quenching aging sequence and equipment,
Production technology is complex, and production cost is higher, and product domestic at present can only meet low and middle-end client's requirement, shadow
Ring the industrialization and application of alloy.
Occur in the case that continued downturn manufacture processing enterprise is faced with the severe market competitive pressure in global economy,
The high performance novel lead frame material of developing low-cost, can not only promote the development of China's blaster fuse frame material, enrich me
The kind series of state's copper alloy for lead-wire frame band, and the technological innovation of down-stream enterprise and product renewing can be promoted to change
Generation.
Therefore, how a kind of suitable for making lead frame, and intensity with higher, hardness, conduction simultaneously is provided
Performance, stress relaxation resistance and the copper alloy for resisting soft performance and lower thermal contraction performance, to adapt at this stage
Industrial development needs the technical issues of being current those skilled in the art's urgent need to resolve.
Summary of the invention
The object of the present invention is to provide a kind of Cu-Ni-Co-Sn-P copper alloy, which is suitable for production lead frame,
And intensity with higher, hardness, electric conductivity, stress relaxation resistance and resist soft performance and lower heat simultaneously
Shrinkage energy, enough industrial developments adapted at this stage need.Another object of the present invention is to provide a kind of Cu-Ni-Co-
The preparation method of Sn-P copper alloy.
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of Cu-Ni-Co-Sn-P copper alloy, the component including following weight percent: 0.2%~1.0% Ni,
0.5%~1.5% Sn, 0.2%~1.0% Co, 0.001%~0.01% P, remaining is Cu.
Preferably, 0.5≤(weight percent of the weight percent+Co of Ni)≤1.5；0.8≤(the weight percent of Ni
The weight percent of+Co)/(weight percent of the weight percent+P of Sn)≤2.
Preferably, the copper alloy further includes at least one of element Zr, Mn, Cr, Fe and B；
And 0.75-D/400≤(the sum of the weight percent of institute's addition element in Zr, Mn, Cr, Fe and B)≤0.75-
D/500, wherein D is the thickness of ingot casting, 200mm≤D≤300mm.
Preferably, the component including following weight percent: 0.5%~0.8% Ni, 0.9%~1.2% Sn,
0.3%~0.5% Co, 0.004%~0.007% P, remaining is Cu.
The application also provides a kind of preparation method of above-mentioned Cu-Ni-Co-Sn-P copper alloy, molten including what is successively carried out
Casting, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar, finish rolling are kept on file, bright annealing,
Finish rolling and bell jar timeliness.
Preferably, comprising the following steps:
(1) founding: using melting, degasification, except being mingled with, and copper is prepared by electromagnetic agitation or mechanical stirring mode and is closed
Gold；
Smelting temperature is 1200~1300 DEG C, and casting temperature is 1150~1250 DEG C；
In fusion process, accurate control element proportion, by chemically examining the content of each element, supplement adjustment copper alloy online
Proportion between element, and complete whole casting process；
(2) hot rolling: hot-rolled temperature is 800~950 DEG C, and the hot rolling time is 4~8h；
(3) spray process: hot rolling finishing temperature is maintained at 700 DEG C or more；
(4) mill face: the milling face milling amount of upper slitter is 0.4mm~1mm, and the milling face milling amount cut is 0.4mm~1mm；
(5) roughing: the reduction ratio of roughing is 60%~80%；
(6) bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(7) rolled in: in the reduction ratio that rolls be 60%~80%；
(8) secondary bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(9) finish rolling is kept on file: the reduction ratio that finish rolling is kept on file is 40%~60%；
(10) bright annealing: annealing temperature is 850~900 DEG C, speed 5-10m/min；
(11) finish rolling: the reduction ratio of finish rolling is 30~40%；
(12) bell jar timeliness: aging temp is 250~300 DEG C, and soaking time is 4~6h.
This application provides a kind of Cu-Ni-Co-Sn-P copper alloy and preparation method thereof, Cu-Ni-Co- provided by the invention
Sn-P copper alloy is suitable for production lead frame, and intensity with higher, hardness, electric conductivity, stress relaxation-resistant simultaneously
It can and resist soft performance and lower thermal contraction performance energy, enough industrial developments adapted at this stage need；Copper of the invention
The preparation method of alloy include crystallizer position or neighbouring additional electromagnetic field stirring, ultrasonic field stirring, churned mechanically mode into
The preparation of row ingot casting, to improve the shape of solid-liquid phase interface in alloy graining process, reduce melt liquid point depth, meanwhile, effectively
The macroscopic view and microsegregation that ground is crushed arborescent structure, reduces alloying element, to stomata during solving melting and casting, dredge
The problems such as pine and ingot casting the problem of being unfavorable for subsequent processing easy to crack in pressing process, lumber recovery is low.Through testing
Verifying, the tensile strength sigma b of Cu-Ni-Co-Sn-P copper alloy provided by the present application can reach 550~700MPa, plastic elongation rate δ
It is 8%~15%, conductivity is 35%~45%IACS, and stress relaxation resistance (120 DEG C, 1000h) >=95% resists soft property
Energy (450 DEG C, 3min) >=150HV, percent thermal shrinkage (450 DEG C, 1min)≤0.01%.It can be widely used in production air-conditioning, vapour
Lead frame in vehicle etc. in the connector element of low-temperature working.
Detailed description of the invention
Fig. 1 is TEM organization chart of the copper alloy after bell jar ageing treatment in the embodiment of the present invention；
Fig. 2 is the stress relaxation resistance figure of copper alloy finished product in the embodiment of the present invention.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions only further illustrate feature and advantage of the invention, rather than to the limit of the claims in the present invention
System.
This application provides a kind of Cu-Ni-Co-Sn-P copper alloy, the component including following weight percent: 0.2%~
1.0% Ni, 0.5%~1.5% Sn, 0.2%~1.0% Co, 0.001%~0.01% P, remaining is Cu.
Added alloys producing:
Ni: nickel element can play solution strengthening effect, and furthermore the addition of nickel element can also increase the wetability of alloy,
Improve the solderability of blaster fuse frame material.
Sn: since tin atom differs larger with copper atom radius, a small amount of tin element is added in copper alloy, can be caused larger
Distortion of lattice, the effective movement for hindering dislocation can effectively pull dislocation, mention especially in alloy stress relaxation
High alloy stress relaxation-resistant.
Co: cobalt element can play solution strengthening effect, and furthermore cobalt element can also effectively improve the softening resistant performance of alloy
And anti-fatigue performance.
P: phosphorus is combined with nickel, cobalt element, forms (Ni, Co) P phase, can effectively hinder the movement of dislocation, improves alloy
Stress relaxation resistance.
Ni, Co form the second phase effective to age-hardening in conjunction with Sn, P, inhibit crystal grain to grow up and improve and soften temperature
Degree.
In one embodiment of the application, 0.5≤(weight percent of the weight percent+Co of Ni)≤1.5；0.8
≤ (weight percent of the weight percent+Co of Ni)/(weight percent of the weight percent+P of Sn)≤2.
As (weight percent of the weight percent+Co of Ni)/(weight percent of the weight percent+P of Sn) > 2%
When, it will form excessive primary phase in process of setting, back dissolving be difficult in solution treatment into Copper substrate, to reduce alloy
Processing performance；(if the weight percent of the weight percent+Co of Ni)/(weight percent of the weight percent+P of Sn) <
0.8, alloy strength is insufficient.
In one embodiment of the application, the copper alloy further includes at least one in element Zr, Mn, Cr, Fe and B
Kind；
And 0.75-D/400≤(the sum of the weight percent of institute's addition element in Zr, Mn, Cr, Fe and B)≤0.75-
D/500, wherein D is the thickness of ingot casting, 200mm≤D≤300mm.
The invention also includes following alloying elements: at least one of Zr, Mn, Cr, Fe and B, these microelements
Addition can refine crystal grain, form tiny disperse educt phase, due to there is a large amount of this disperse educt phase, crystal grain in alloy
Grow up and be also hindered, thus softening resistant performance can be significantly improved.In fact, a variety of alloying elements are not to isolate to work,
Its influence be it is mutual, any of which component number variation is brought to the performance of alloy.Every kind of element has respective
Independent effect, but after the intercombination of this element, it mutually excites, mutually promotes between element, synergistic effect clearly, makes copper
Processing performance, mechanical property, stress relaxation resistance and the softening resistant performance of alloy are significantly improved.
The addition of microelement should meet: the copper alloy further includes at least one in element Zr, Mn, Cr, Fe and B
Kind；
And 0.75-D/400≤(the sum of the weight percent of institute's addition element in Zr, Mn, Cr, Fe and B)≤0.75-
D/500, wherein D is the thickness of ingot casting, 200mm≤D≤300mm；
When alloy provided by the invention includes Zr, Mn, Cr, Fe and all five kinds of B element, 0.75-D/400≤(Zr
Weight percent+Mn weight percent+Cr weight percent+Fe weight percent+B weight percent)≤
0.75-D/500, wherein D is the thickness of ingot casting, 200mm≤D≤300mm；To ensure the large scale slower in solidification cooling rate
Ingot casting core does not form or is formed less the primary solidification precipitated phase containing above-mentioned element.
In one embodiment of the application, above-mentioned Cu-Ni-Co-Sn-P alloy, the group including following weight percent
Point: 0.5%~0.8% Ni, 0.9%~1.2% Sn, 0.3%~0.5% Co, 0.004%~0.007% P,
Remaining is Cu.
Present invention also provides a kind of preparation methods of above-mentioned Cu-Ni-Co-Sn-P copper alloy, molten including what is successively carried out
Casting, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar, finish rolling are kept on file, bright annealing,
Finish rolling and bell jar timeliness.
The preparation method of above-mentioned Cu-Ni-Co-Sn-P copper alloy, specifically includes the following steps:
(1) founding: alloy is prepared using melting, degasification, except being mingled with, and by electromagnetic agitation or mechanical stirring mode；
Smelting temperature is 1200~1300 DEG C, and casting temperature is 1150~1250 DEG C；
In fusion process, accurate control element proportion, by chemically examining the content of each element, supplement adjustment alloy member online
Proportion between element, and complete whole casting process；
(2) hot rolling: hot-rolled temperature is 800~950 DEG C, and the hot rolling time is 4~8h；
(3) spray process: hot rolling finishing temperature is maintained at 700 DEG C or more；
(4) mill face: the milling face milling amount of upper slitter is 0.4mm~1mm, and the milling face milling amount cut is 0.4mm~1mm；
(5) roughing: the reduction ratio of roughing is 60%~80%；
(6) bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(7) rolled in: in the reduction ratio that rolls be 60%~80%；
(8) secondary bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(9) finish rolling is kept on file: the reduction ratio that finish rolling is kept on file is 40%~60%；
(10) bright annealing: annealing temperature is 850~900 DEG C, speed 5-10m/min；
(11) finish rolling: the reduction ratio of finish rolling is 30~40%；
(12) bell jar timeliness: aging temp is 250~300 DEG C, and soaking time is 4~6h.
The present invention is by the control and optimization to element species in copper alloy and content, so that Cu-Ni- provided by the invention
Co-Sn-P copper alloy processing performance with higher, mechanical property, anti-stress relaxation resistance, softening resistant performance and low simultaneously
Thermal contraction performance, the needs of the blaster fuse frame material of quality of production qualification, improve lead frame with can satisfy steady and continuous
The stationarity and continuity of frame material production, improve product quality and production efficiency, and meet market to low cost, performance
The requirement of the good frame material of stability.
There is no limit using in the art to processing equipment unmentioned in the above method and technological parameter by the present invention
Processing equipment and technological parameter known to technical staff.
For a further understanding of the present invention, below with reference to embodiment to a kind of Cu-Ni-Co-Sn-P copper provided by the invention
Alloy and preparation method thereof is described in detail, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 1.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
(temperature control exists for microelement (element Zr) → sampling analysis (temperature is controlled at 1240 ± 10 DEG C) → composition adjustment → cast
1215±10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 710 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 60%；
(6) bell jar annealing: annealing temperature is 500 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 50%；
(10) bright annealing: annealing temperature is 850 DEG C, speed 5m/min；
(11) finish rolling: reduction ratio 35%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 250 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 1 in 2.
Embodiment 2
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 2.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Mn) → sampling analysis (temperature control at 1250 ± 10 DEG C) → composition adjustment → cast (temperature control 1210 ±
10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 705 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 60%；
(6) bell jar annealing: annealing temperature is 500 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 75%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 50%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 6m/min；
(11) finish rolling: reduction ratio 40%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 270 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 2 in 2.
Embodiment 3
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 3.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Cr) → sampling analysis (temperature control at 1220 ± 10 DEG C) → composition adjustment → cast (temperature control 1215 ±
10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 708 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 65%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 55%；
(10) bright annealing: annealing temperature is 870 DEG C, speed 6m/min；
(11) finish rolling: reduction ratio 35%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 260 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 3 in 2.
Embodiment 4
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 4.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (B) → sampling analysis (temperature control at 1220 ± 10 DEG C) → composition adjustment → cast (temperature control 1220 ±
10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 711 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 65%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 530 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 55%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 5m/min；
(11) finish rolling: reduction ratio 35%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 260 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 4 in 2.
Embodiment 5
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 5.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Fe) → sampling analysis (temperature control at 1220 ± 10 DEG C) → composition adjustment → cast (temperature control 1215 ±
10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 710 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 68%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 540 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 50%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 6m/min；
(11) finish rolling: reduction ratio 40%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 250 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 5 in 2.
Embodiment 6
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 6.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
(temperature control exists for microelement (Zr+Mn) → sampling analysis (temperature is controlled at 1220 ± 10 DEG C) → composition adjustment → cast
1220±10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 703 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 68%；
(6) bell jar annealing: annealing temperature is 530 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 75%；
(8) secondary bell jar annealing: annealing temperature is 540 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 55%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 5m/min；
(11) finish rolling: reduction ratio 40%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 270 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 6 in 2.
Embodiment 7
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 7.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
(temperature control exists for microelement (Cr+B+Fe) → sampling analysis (temperature is controlled at 1220 ± 10 DEG C) → composition adjustment → cast
1210±10℃)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 701 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 75%；
(6) bell jar annealing: annealing temperature is 540 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 50%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 5m/min；
(11) finish rolling: reduction ratio 40%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 280 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 7 in 2.
Embodiment 8
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 8.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Zr+Cr+B+Fe) → sampling analysis (temperature is controlled at 1220 ± 10 DEG C) → composition adjustment → cast (temperature control
At 1220 ± 10 DEG C)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 706 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 75%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 500 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 55%；
(10) bright annealing: annealing temperature is 880 DEG C, speed 7m/min；
(11) finish rolling: reduction ratio 35%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 250 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 8 in 2.
Embodiment 9
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 9.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Zr+Mn+Cr+Fe) → sampling analysis (temperature is controlled at 1220 ± 10 DEG C) → composition adjustment → cast (temperature control
System is at 1220 ± 10 DEG C)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 708 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 78%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 70%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 60%.
(10) bright annealing: annealing temperature is 860 DEG C, speed 5m/min
(11) finish rolling: reduction ratio 40%.
(12) bell jar timeliness: aging temp keeps the temperature 4h at 270 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 9 in 2.
Embodiment 10
Alloy of the invention uses following raw material melting: cathode copper, pure nickel, pure tin, pure cobalt, copper phosphorus intermediate alloy.Alloy
Ingredient be shown in Table 1 embodiment 10.
(1) founding: (illumi yarn copper 30%+ feed back copper 70%)+nickel+cobalt covering (calcining charcoal+electrode graphite powder) → molten
+ 25% copper phosphorus intermediate alloy of change+tin →+75% copper phosphorus intermediate alloy of fishing slag → heating (1220 DEG C) → degasification (10min)+other
Microelement (Zr+Mn+Cr+B+Fe) → sampling analysis (temperature is controlled at 1220 ± 10 DEG C) → composition adjustment → cast (temperature
Control is at 1210 ± 10 DEG C)；
(2) hot rolling: hot-rolled temperature is 900 DEG C, soaking time 6h；
(3) spray process: hot rolling finishing temperature is 703 DEG C；
(4) mill face: upper slitter 0.5mm cuts 0.5mm；
(5) roughing: reduction ratio 75%；
(6) bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(7) it is rolled in: reduction ratio 78%；
(8) secondary bell jar annealing: annealing temperature is 550 DEG C, keeps the temperature 5h；
(9) finish rolling is kept on file: reduction ratio 45%；
(10) bright annealing: annealing temperature is 860 DEG C, speed 5m/min；
(11) finish rolling: reduction ratio 35%；
(12) bell jar timeliness: aging temp keeps the temperature 4h at 250 DEG C.
By the above founding, hot rolling, spray process, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar,
After the working processes such as finish rolling keeps on file, bright annealing, finish rolling, bell jar timeliness, performance is shown in Table the embodiment 10 in 2.
The alloying component formula (wt%) of table 1, embodiment 1-10
The alloy property table of table 2, embodiment 1-10
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications for these embodiments are it will be apparent that as defined herein one for those skilled in the art
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest range.
Claims (1)
1. a kind of preparation method of Cu-Ni-Co-Sn-P copper alloy, which is characterized in that including the founding, hot rolling, spray successively carried out
Leaching processing, milling face, roughing, the annealing of bell jar, in roll, the annealing of secondary bell jar, finish rolling are kept on file, bright annealing, finish rolling and clock
Cover timeliness；
The following steps are included:
(1) founding: copper alloy is prepared using melting, degasification, except being mingled with, and by electromagnetic agitation or mechanical stirring mode；
Smelting temperature is 1200~1300 DEG C, and casting temperature is 1150~1250 DEG C；
In fusion process, accurate control element proportion, by chemically examining the content of each element, supplement adjustment copper alloying element online
Between proportion, and complete whole casting process；
(2) hot rolling: hot-rolled temperature is 800~950 DEG C, and the hot rolling time is 4~8h；
(3) spray process: hot rolling finishing temperature is maintained at 700 DEG C or more；
(4) mill face: the milling face milling amount of upper slitter is 0.4mm~1mm, and the milling face milling amount cut is 0.4mm~1mm；
(5) roughing: the reduction ratio of roughing is 60%~80%；
(6) bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(7) rolled in: in the reduction ratio that rolls be 60%~80%；
(8) secondary bell jar annealing: annealing temperature is 500~550 DEG C, and soaking time is 5~7h；
(9) finish rolling is kept on file: the reduction ratio that finish rolling is kept on file is 40%~60%；
(10) bright annealing: annealing temperature is 850~900 DEG C, speed 5-10m/min；
(11) finish rolling: the reduction ratio of finish rolling is 30~40%；
(12) bell jar timeliness: aging temp is 250~300 DEG C, and soaking time is 4~6h；
The Cu-Ni-Co-Sn-P copper alloy includes the component of following weight percent: 0.5%~0.8% Ni, 0.9%~
1.2% Sn, 0.3%~0.5% Co, 0.004%~0.007% P, remaining is Cu；
0.5≤(weight percent of the weight percent+Co of Ni)≤1.5；0.8≤(the weight hundred of the weight percent+Co of Ni
Score)/(weight percent of the weight percent+P of Sn)≤2；
The copper alloy further includes at least one of element Zr, Mn, Cr, Fe and B；
And 0.75-D/400≤(the sum of the weight percent of institute's addition element in Zr, Mn, Cr, Fe and B)≤0.75-D/
500, wherein D is the thickness of ingot casting, 200mm≤D≤300mm.
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| CN113061777B (en) * | 2021-03-25 | 2022-01-28 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
| CN113249666A (en) * | 2021-05-14 | 2021-08-13 | 太原晋西春雷铜业有限公司 | Preparation method for reducing heat shrinkage rate of Cu-Ni-Si alloy |
| CN115572857B (en) * | 2022-10-20 | 2023-07-04 | 菏泽广源铜带有限公司 | High-performance high-copper alloy and preparation method thereof |
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