CN108467967A - A kind of ageing strengthening copper alloy band and preparation method thereof - Google Patents
A kind of ageing strengthening copper alloy band and preparation method thereof Download PDFInfo
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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
- B22D11/16—Controlling or regulating processes or operations
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- 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
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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
A kind of ageing strengthening copper alloy band, the copper alloy band are grouped as by the group of following weight percent：Si：0.4~1.3%, Ni：2~4.5%, Cr：0.06~0.2%, Zn：0.2~0.8%, Mg：0.05~0.2%, surplus copper and inevitable trace impurity.Preparation process：Dispensing, melting；Mg is added and carries out deoxidation treatment；When heat preservation furnace temperature reaches 1220~1300 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting；Milling face, roughing, solution treatment；It is rolled in being carried out after surface clean；Secondary solution treatment；Finished product finish rolling is carried out after surface clean；Finished product timeliness；Surface clean and surface grinding polishing；Finished product slitting, inspection, packaging.The ageing strengthening copper alloy band of the present invention has good processing performance and casting character, have the characteristics that it is high-strength, high-elastic, high lead, excellent high temperature resistance and preferable proof stress relaxation, it is a kind of ideal material used for lead frame, and preparation process is simple.
Description
Technical field
The invention belongs to Cu alloy material and technology field, specifically a kind of ageing strengthening copper alloy band and its preparations
Method.
Background technology
Lead frame copper alloy band is the support framework of integrated circuit, with being miniaturized of electric elements, accurate chemical combination
High performance requires blaster fuse frame material used should have high intensity, high resiliency, high conductivity and excellent high temperature proof stress
Relaxation property.
Through looking into, the Chinese invention patent of existing Patent No. 200810018995.9《High-strength, high guiding wire frame copper alloy
The production method of band》, chemical composition：Fe0.8~1.2%, P0.01~0.04%, surplus Cu；Or Fe2.1~
The content of 2.6%, P0.015~0.15%, Zn0.05~0.2%, Pb and Sn are not more than 0.03%, surplus Cu；Preparation process；
Dispensing；On draw founding, casting temperature is 1158~1218 DEG C；It is continuously extruded：Copper bar is straightened, copper bar enters in induction heater
300~400 DEG C are heated to, extruding race is directly entered, the bandlet base of 12*200mm is ultimately formed, is directly entered with spirituous
Cooling zone quick refrigeration is to 70 DEG C hereinafter, being batched into coiling machine.But the copper alloy band performance of above-mentioned preparation also not right and wrong
Convention is thought, it is therefore desirable to design a kind of proportioning science, ageing strengthening copper alloy band of good performance, be used as and preferably draw
Wire frame material.
Invention content
First technical problem to be solved by this invention is to provide that a kind of component proportion is scientific and reasonable, alloy strength is high
Ageing strengthening copper alloy band, while there is good elasticity, excellent conductivity and the relaxation of preferable proof stress.
Second technical problem to be solved by this invention is to provide a kind of rational ageing strengthening copper alloy simple for process
The copper alloy of the preparation method of band, preparation has good processing performance and casting character, while alloy strength is high, conductivity
Well, the features such as excellent spring, high temperature proof stress relaxation property is good.
Technical solution is used by the present invention solves above-mentioned first technical problem：A kind of ageing strengthening copper alloy belt
Material, it is characterised in that：The copper alloy band is grouped as by the group of following weight percent：Si：0.4~1.3%, Ni：2~
4.5%, Cr：0.06~0.2%, Zn：0.2~0.8%, Mg：0.05~0.2%, surplus copper and inevitable trace impurity.
It is preferred that the weight percent of each component is in the copper alloy band：Si：0.6%, Ni：3.1%, Cr：
0.07%, Zn：0.5%, Mg：0.15%, surplus copper and inevitable trace impurity.
Technical solution is used by the present invention solves above-mentioned second technical problem：A kind of above-mentioned ageing strengthening copper alloy
The preparation method of band, it is characterised in that include the following steps：
1) dispensing, melting：Weighing is carried out according to the component proportion of copper alloy band, melting is added in Si, Ni, Cr, Zn, Cu
Heat up fusing in stove；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1250~1350 DEG C, starts to be transferred to after static 4~6 minutes
Holding furnace is covered, 80~110mm of cladding thickness using the calcining charcoal by 580~620 DEG C of heat preservations 4~6 hours；And it is transferred to
After holding furnace, 0.03~0.07%Mg was added in holding furnace every 25~35 minutes；Since Mg is the metal easily aoxidized,
Content can decline Mg during horizontal casting in holding furnace at any time, in order to ensure that the Mg in strand stablizes, in horizontal casting
In the process according to the scaling loss rule of Mg, the Mg contents in holding furnace are periodically added, reach the stabilization for maintaining Mg contents, it is ensured that product
Performance is uniform；
3) when heat preservation furnace temperature reaches 1220~1300 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast
Strand 15~17mm of thickness, casting speed control 160~300mm/min, and the control of strand outlet temperature is at 650 DEG C~780 DEG C, strand
Go out at 50~100mm of crystallizer and is existed using strong cooling water (0.4~0.6MPa of water pressure, 20~40 DEG C of leaving water temperature) progress strand
The solid solution cooling of line hardening；Using red ingot mode is drawn, since this alloy casting stress is big, if once cooling strong when solidification and crystallization
Degree, alloy stress cracks when easily leading to casting, face checking, even tensile phenomenon occurs during cast.And red ingot is used to cast
Mode is made, face checking phenomenon when alloy graining can be solved, ensure that the quality of casting；
4) milling face, roughing, solution treatment are carried out successively；
5) it is rolled in being carried out after surface clean；
6) secondary solution treatment；
7) finished product finish rolling is carried out after surface clean；
8) finished product timeliness；
9) surface clean and surface grinding polishing；
10) finished product slitting, inspection, packaging.
As an improvement, the strand outlet temperature of the step 3) is controlled using infrared thermometer thermometric, according to strand
Temperature-measuring results adjust casting speed, smelting temperature casting and the primary cooling water temperature of strand, it is red to reach automatic control level continuous casting
Ingot is cast, the control of crystallizer cooling water temperature at 20~35 DEG C, leaving water temperature control at 40~55 DEG C, cooling water pressure 0.3~
0.6Mpa, and base goes out at 50~100mm of crystallizer using the online hardening solid solution cooling of strong secondary cooling water progress strand.
Further, the milling face of the step 4) refers to the offline milling face of 15~17mm thickness strands, up and down each 0.5~0.7mm of milling,
Roughing is thick to 3.8~4.2mm, 820~940 DEG C of the solid solubility temperature of solution treatment, 0.5~1h of solution time, using water cooling.
It is preferred that being rolled to 0.7~0.9mm thickness in the step 5)
It is preferred that the secondary solution treatment of the step 6) is to use air cushion furnace on-line solution, 800~900 DEG C of solid solubility temperature, band
It is 5~50m/min in air cushion furnace medium velocity.
It is preferred that the finished product finish rolling of the step 7) refers to that finish rolling is thick to 0.25~0.35mm.
It is preferred that 460~500 DEG C of the aging temp of step 8) the finished product timeliness, aging time is 3~6h.
Finally, the surface grinding of the step 9), which polishes, refers to；Mixing roll uses SF#2500 (purchase of Shen Kanggong department), throws
Current control is in 10~13A, 600~1000rpm of rotating speed, 11~18mg/60mm*100mm of amount of grinding under optical pressure, and roughness Ra≤
0.1μm。
Compared with the prior art, the advantages of the present invention are as follows：Copper alloy compositions proportioning it is scientific and reasonable, select containing Si, Ni,
The acid bronze alloy of Zn, Mg, Cr, silicon form Ni with the Ni in alloy2Si hardening constituents pass through solid solution+ageing technique, this hardening constituent energy
Significantly improve alloy strength, elasticity, conductivity and high temperature proof stress relaxation property；Cr particles are precipitated in fixation rates in Cr
On the one hand phase can improve the high temperature resistance softening performance of alloy, while Cr particles can prevent crystalline substance of alloy during high temperature solid solution
Grain length is big, reaches Grain Refinement Effect, further improves the comprehensive performance of material；Addition Zn elements can improve conjunction in the alloy
The soldering of gold and plating performance, in brazing process, Zn elements form segregation layer at copper alloy and solder interface, can prevent copper
Diffusion of the element into solder, to hinder to form the larger Cu of brittleness5Sn intermetallic layers improve the knot of alloy and solder
Performance is closed, to improve the welding performance of alloy；Mg can play deoxidation, while magnesium can accelerate precipitation and the refinement of the second phase
Precipitated phase increases the resistance of dislocation motion, improves the hardness, intensity and high temperature resistant property of alloy.The ageing strengthening copper of the present invention
Alloy strip steel rolled stock have good processing performance and casting character, have it is high-strength, high-elastic, high lead, excellent high temperature resistance and compared with
The feature of good proof stress relaxation is a kind of ideal material used for lead frame, also, horizontal casting outlet temperature is combined to control
Surface grinding polishing process together with increasing in production process 650 DEG C~780 DEG C of (i.e. strand outlet temperature), mixing roll use
SF#2500, polishing pressure current control in 10~13A, 600~1000rpm of rotating speed, 11~18mg/60mm*100mm of amount of grinding,
Abbreviated system production lead frame frame copper alloy band is realized in roughness Ra≤0.1 μm, reduces energy consumption and Sheng Ben productions into preparation
It is simple for process.
Specific implementation mode
Present invention is further described in detail with reference to embodiments.
Table 1 is the component proportion of the copper alloy band of five embodiments of the invention：
1 alloy composition of the embodiment of the present invention (wt%) of table
| Material number | Si | Ni | Cr | Zn | Mg | Cu |
| Embodiment 1 | 0.6 | 3.1 | 0.07 | 0.5 | 0.15 | Surplus |
| Embodiment 2 | 0.55 | 2.7 | 0.09 | 0.4 | 0.14 | Surplus |
| Embodiment 3 | 0.57 | 2.9 | 0.11 | 0.3 | 0.18 | Surplus |
| Embodiment 4 | 0.45 | 2.3 | 0.06 | 0.7 | 0.08 | Surplus |
| Embodiment 5 | 0.75 | 3.7 | 0.15 | 0.2 | 0.19 | Surplus |
Embodiment 1
A kind of ageing strengthening copper alloy band and preparation method thereof, step is：
1) dispensing, melting：Weighing is carried out according to component proportion, Si, Ni, Cr, Zn, Cu are added to heat up in smelting furnace and melted
Change；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1280 DEG C, it is static to start to be transferred to holding furnace after five minutes, it adopts
With the calcining charcoal covering by 600 DEG C of heat preservations 5 hours, cladding thickness 100mm；And after being transferred to holding furnace, exist every half an hour
0.05%Mg is added in holding furnace；
3) when heat preservation furnace temperature reaches 1260 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand is thick
16mm, casting speed control 160~300mm/min, and strand outlet temperature is controlled at 650 DEG C~780 DEG C, and strand goes out crystallizer
The online hardening solid solution cooling of strand, crystallizer are carried out using strong cooling water (water pressure 0.5MPa, 30 DEG C of leaving water temperature) at 100mm
Cooling water temperature control is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, 0.3~0.6Mpa of cooling water pressure；
4) milling face, the offline milling face of 16mm strands, each milling 0.6mm in top and bottom, milling face to 14.8mm thickness；
5) roughing, roughing to 4mm thickness；
6) it is dissolved, 870 DEG C of solid solubility temperature, solution time 0.8h, using water cooling；
7) surface clean；
8) rolled in, in be rolled to 0.9mm thickness；
9) secondary solution treatment, using air cushion furnace on-line solution, 800~900 DEG C of solid solubility temperature, band is in air cushion furnace medium velocity
5~50m/min；
10) surface clean；
11) finished product finish rolling；Finish rolling is thick to 0.35mm；
12) finished product timeliness, 480 DEG C of aging temp, aging time 5h；
13) surface clean and surface grinding polishing, mixing roll use SF#2500.Polishing pressure current control turns in 13A
Fast 1000rpm, amount of grinding 18mg/60mm*100mm, roughness Ra≤0.1 μm；
14) finished product slitting, inspection, packaging.
Embodiment 2：
A kind of ageing strengthening copper alloy band and preparation method thereof, step is：
1) dispensing, melting：Weighing is carried out according to component proportion, Si, Ni, Cr, Zn, Cu are added to heat up in smelting furnace and melted
Change；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1305 DEG C, it is static to start to be transferred to holding furnace after five minutes, it adopts
With the calcining charcoals covering by 600 DEG C of heat preservations 5 hours, cladding thickness 100mm, and after being transferred to holding furnace, exist every half an hour
0.04%Mg is added in holding furnace.
3) when heat preservation furnace temperature reaches 1275 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand is thick
16mm, casting speed control 160~300mm/min, and strand outlet temperature is controlled at 650 DEG C~780 DEG C, and strand goes out crystallizer
The online hardening solid solution cooling of strand is carried out using strong cooling water (water pressure 0.4MPa, 20 DEG C of leaving water temperature) at 100mm.Crystallizer
Cooling water temperature control is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, 0.3~0.6Mpa of cooling water pressure；
4) milling face, the offline milling face of 16mm strands, each milling 0.6mm in top and bottom, behind milling face to 14.8mm.
5) roughing, roughing to 4mm thickness；
6) it is dissolved, 900 DEG C of solid solubility temperature, solution time 0.7h, using water cooling；
7) surface clean；
8) rolled in, in be rolled to 0.8mm thickness；
9) secondary solution treatment, using air cushion furnace on-line solution.800~900 DEG C of solid solubility temperature, band are in air cushion furnace medium velocity
5~50m/min；
10) surface clean；
11) finished product finish rolling, finish rolling to 0.3mm thickness；
12) finished product timeliness, 480 DEG C of aging temp, aging time 5h；
13) 13) surface clean and surface grinding polishing, mixing roll use SF#2500, polishing pressure current control in 10A,
Rotating speed 800rpm, amount of grinding 15mg/60mm*100mm.Roughness Ra≤0.1 μm；
14) finished product slitting, inspection, packaging.
Embodiment 3：
A kind of ageing strengthening copper alloy band and preparation method thereof, step is：
1) dispensing, melting：Weighing is carried out according to component proportion, Si, Ni, Cr, Zn, Cu are added to heat up in smelting furnace and melted
Change；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1270 DEG C, it is static to start to be transferred to holding furnace after five minutes, it adopts
With the calcining charcoals covering by 600 DEG C of heat preservations 5 hours, cladding thickness 100mm, and after being transferred to holding furnace, exist every half an hour
0.04%Mg is added in holding furnace；
3) when heat preservation furnace temperature reaches 1250 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand is thick
16mm, casting speed control 160~300mm/min, and strand outlet temperature is controlled at 650 DEG C~780 DEG C, and strand goes out crystallizer
The online hardening solid solution cooling of strand, crystallizer are carried out using strong cooling water (water pressure 0.6MPa, 40 DEG C of leaving water temperature) at 100mm
Cooling water temperature control is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, 0.3~0.6Mpa of cooling water pressure；
4) milling face, the offline milling face of 16mm strands, each milling 0.6mm in top and bottom, milling face to 14.8mm thickness.
5) roughing, roughing to 4mm thickness；
6) it is dissolved, 860 DEG C of solid solubility temperature, solution time 1h, using water cooling；
7) surface clean；
8) rolled in, in be rolled to 0.7mm thickness；
9) secondary solution treatment, using air cushion furnace on-line solution.800~900 DEG C of solid solubility temperature, band are in air cushion furnace medium velocity
5~50m/min；
10) surface clean；
11) finished product finish rolling, finish rolling to 0.25mm thickness；
12) finished product timeliness, 470 DEG C of aging temp, aging time 6h；
13) surface clean and surface grinding polishing, mixing roll use SF#2500.Polishing pressure current control turns in 13A
Fast 800rpm, amount of grinding 16mg/60mm*100mm, roughness Ra≤0.1 μm；
14) finished product slitting, inspection, packaging.
Embodiment 4
A kind of ageing strengthening copper alloy band and preparation method thereof, step is：
1) dispensing, melting：Weighing is carried out according to component proportion, Si, Ni, Cr, Zn, Cu are added to heat up in smelting furnace and melted
Change；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1250 DEG C, starts to be transferred to holding furnace after static 6 minutes, adopt
With the calcining charcoal covering by 620 DEG C of heat preservations 4 hours, cladding thickness 80mm；And after being transferred to holding furnace, protected every half an hour
0.04%Mg is added in warm stove；
3) when heat preservation furnace temperature reaches 1220 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand is thick
15mm, casting speed control 160mm/min, and strand outlet temperature is controlled at 650 DEG C~700 DEG C, and strand goes out at crystallizer 100mm
The online hardening solid solution cooling of strand, crystallizer cooling water are carried out using strong cooling water (water pressure 0.6MPa, 40 DEG C of leaving water temperature)
Temperature control is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, 0.3~0.6Mpa of cooling water pressure；
4) milling face, the offline milling face of 16mm strands, each milling 0.6mm in top and bottom, milling face to 14.8mm thickness；
5) roughing, roughing to 4mm thickness；
6) it is dissolved, 870 DEG C of solid solubility temperature, solution time 0.5h, using water cooling；
7) surface clean；
8) rolled in, in be rolled to 0.9mm thickness；
9) secondary solution treatment, using air cushion furnace on-line solution, 830 DEG C of solid solubility temperature, band is 45m/ in air cushion furnace medium velocity
min；
10) surface clean；
11) finished product finish rolling；Finish rolling is thick to 0.35mm；
12) finished product timeliness, 460 DEG C of aging temp, aging time 6h；
13) surface clean and surface grinding polishing, mixing roll use SF#2500.Polishing pressure current control turns in 13A
Fast 1000rpm, amount of grinding 18mg/60mm*100mm, roughness Ra≤0.1 μm；
14) finished product slitting, inspection, packaging.
Embodiment 5
A kind of ageing strengthening copper alloy band and preparation method thereof, step is：
1) dispensing, melting：Weighing is carried out according to component proportion, Si, Ni, Cr, Zn, Cu are added to heat up in smelting furnace and melted
Change；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1350 DEG C, starts to be transferred to holding furnace after static 4 minutes, adopt
With the calcining charcoal covering by 580 DEG C of heat preservations 6 hours, cladding thickness 110mm；And after being transferred to holding furnace, exist every half an hour
0.07%Mg is added in holding furnace；
3) when heat preservation furnace temperature reaches 1300 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand is thick
17mm, casting speed control 300mm/min, and strand outlet temperature is controlled at 700 DEG C~780 DEG C, and strand goes out at crystallizer 100mm
The online hardening solid solution cooling of strand, crystallizer cooling water are carried out using strong cooling water (water pressure 0.4MPa, 20 DEG C of leaving water temperature)
Temperature control is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, 0.3~0.6Mpa of cooling water pressure；
4) milling face, the offline milling face of 16mm strands, each milling 0.6mm in top and bottom, milling face to 14.8mm thickness；
5) roughing, roughing to 4mm thickness；
6) it is dissolved, 930 DEG C of solid solubility temperature, solution time 1h, using water cooling；
7) surface clean；
8) rolled in, in be rolled to 0.7mm thickness；
9) secondary solution treatment, using air cushion furnace on-line solution, 880 DEG C of solid solubility temperature, band is 35m/ in air cushion furnace medium velocity
min；
10) surface clean；
11) finished product finish rolling；Finish rolling is thick to 0.35mm；
12) finished product timeliness, 490 DEG C of aging temp, aging time 3h；
13) surface clean and surface grinding polishing, mixing roll use SF#2500.Polishing pressure current control turns in 10A
Fast 600rpm, amount of grinding 11mg/60mm*100mm, roughness Ra≤0.1 μm；
14) finished product slitting, inspection, packaging.
Table 2 is the performance test results of copper alloy band prepared by above-mentioned five embodiments：
2 particular product performance parameters of table
The copper alloy band that as can be seen from Table 2 prepared by the present invention has intensity high, and conductivity is good, excellent spring, high
The features such as warm proof stress relaxation property is good.
Claims (10)
1. a kind of ageing strengthening copper alloy band, it is characterised in that：The copper alloy band is by the component of following weight percent
Composition：Si：0.4~1.3%, Ni：2~4.5%, Cr：0.06~0.2%, Zn：0.2~0.8%, Mg：0.05~0.2%, it is remaining
Measure copper and inevitable trace impurity.
2. ageing strengthening copper alloy band according to claim 1, it is characterised in that：Each component in the copper alloy band
Weight percent be：Si：0.6%, Ni：3.1%, Cr：0.07%, Zn：0.5%, Mg：0.15%, it surplus copper and can not keep away
The trace impurity exempted from.
3. a kind of preparation method of ageing strengthening copper alloy band according to claim 1 or claim 2, it is characterised in that including following
Step：
1) dispensing, melting：Weighing is carried out according to the component proportion of copper alloy band, Si, Ni, Cr, Zn, Cu are added in smelting furnace
Heating fusing；
2) Mg is added and carries out deoxidation treatment, temperature is controlled at 1250~1350 DEG C, starts to be transferred to heat preservation after static 4~6 minutes
Stove is covered, 80~110mm of cladding thickness using the calcining charcoal by 580~620 DEG C of heat preservations 4~6 hours；And it is transferred to heat preservation
After stove, 0.03~0.07%Mg was added in holding furnace every 25~35 minutes, to maintain the stabilization of Mg contents；
3) when heat preservation furnace temperature reaches 1220~1300 DEG C of casting temperature, using the red ingot foundry engieering of horizontal casting, cast strand
15~17mm of thickness, casting speed control 160~300mm/min, and for the control of strand outlet temperature at 650 DEG C~780 DEG C, strand goes out knot
0.4~0.6MPa of water pressure, the strong cooling water of 20~40 DEG C of leaving water temperature is used to carry out strand and quench online at brilliant 50~100mm of device
Water solid solution cooling；
4) milling face, roughing, solution treatment are carried out successively；
5) it is rolled in being carried out after surface clean；
6) secondary solution treatment；
7) finished product finish rolling is carried out after surface clean；
8) finished product timeliness；
9) surface clean and surface grinding polishing；
10) finished product slitting, inspection, packaging.
4. preparation method according to claim 3, it is characterised in that：The strand outlet temperature of the step 3) is using infrared
Line temperature measurer thermometric controls, and the control of crystallizer cooling water temperature is at 20~35 DEG C, and leaving water temperature control is at 40~55 DEG C, cooling water
0.3~0.6Mpa of pressure.
5. preparation method according to claim 3, it is characterised in that：The milling face of the step 4) refers to the casting of 15~17mm thickness
The offline milling face of base, up and down each 0.5~0.7mm of milling, roughing to 3.8~4.2mm thickness, the solid solubility temperature 820~940 of solution treatment
DEG C, 0.5~1h of solution time, using water cooling.
6. preparation method according to claim 3, it is characterised in that：0.7~0.9mm thickness is rolled in the step 5).
7. preparation method according to claim 3, it is characterised in that：The secondary solution treatment of the step 6) is to use air cushion furnace
On-line solution, 800~900 DEG C of solid solubility temperature, band are 5~50m/min in air cushion furnace medium velocity.
8. preparation method according to claim 3, it is characterised in that：The finished product finish rolling of the step 7) refer to finish rolling extremely
0.25~0.35mm is thick.
9. preparation method according to claim 3, it is characterised in that：The aging temp 460 of step 8) the finished product timeliness
~500 DEG C, aging time is 3~6h.
10. preparation method according to claim 3, it is characterised in that：The surface grinding of the step 9) polishes；It grinds
Grinding roller uses SF#2500, and polishing pressure current control is in 10~13A, 600~1000rpm of rotating speed, 11~18mg/ of amount of grinding
60mm*100mm, roughness Ra≤0.1 μm.
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| CN111020283A (en) * | 2019-12-06 | 2020-04-17 | 宁波金田铜业(集团)股份有限公司 | Copper alloy strip for plug-in and preparation method thereof |
| CN111592924A (en) * | 2020-04-26 | 2020-08-28 | 宁夏中色新材料有限公司 | Calcination method of charcoal for smelting |
| CN114346600A (en) * | 2021-12-24 | 2022-04-15 | 安徽鑫科铜业有限公司 | Production process of lead frame copper strip for high-end manufacturing industry |
| CN115613043A (en) * | 2022-11-11 | 2023-01-17 | 安徽鑫科铜业有限公司 | Copper-nickel-silicon alloy strip surface treatment solution and copper-nickel-silicon alloy strip surface treatment method |
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| CN102105611A (en) * | 2009-04-30 | 2011-06-22 | Jx日矿日石金属株式会社 | Cu-Ni-Si-Mg-based alloy having improved electrical conductivity and bendability |
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| CN102105611A (en) * | 2009-04-30 | 2011-06-22 | Jx日矿日石金属株式会社 | Cu-Ni-Si-Mg-based alloy having improved electrical conductivity and bendability |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777994A (en) * | 2019-04-01 | 2019-05-21 | 宁波金田铜业(集团)股份有限公司 | A kind of electronic shield copper alloy wire and its preparation method and application |
| CN111020283A (en) * | 2019-12-06 | 2020-04-17 | 宁波金田铜业(集团)股份有限公司 | Copper alloy strip for plug-in and preparation method thereof |
| CN111020283B (en) * | 2019-12-06 | 2021-07-20 | 宁波金田铜业(集团)股份有限公司 | Copper alloy strip for plug-in and preparation method thereof |
| CN111592924A (en) * | 2020-04-26 | 2020-08-28 | 宁夏中色新材料有限公司 | Calcination method of charcoal for smelting |
| CN114346600A (en) * | 2021-12-24 | 2022-04-15 | 安徽鑫科铜业有限公司 | Production process of lead frame copper strip for high-end manufacturing industry |
| CN115613043A (en) * | 2022-11-11 | 2023-01-17 | 安徽鑫科铜业有限公司 | Copper-nickel-silicon alloy strip surface treatment solution and copper-nickel-silicon alloy strip surface treatment method |
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