CN108330320B - A kind of high-performance Cu-Ni-Si alloy lead frames material and preparation method thereof - Google Patents
A kind of high-performance Cu-Ni-Si alloy lead frames material and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- 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
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Abstract
A kind of high-performance Cu-Ni-Si alloy lead frames material, including following components in percentage by weight: 4.0~9.0% nickel, 1.0~1.5% silicon, 0.1~0.4% silver, 0.05~0.10% phosphorus, surplus be copper and inevitable impurity element.A kind of preparation method of high-performance Cu-Ni-Si alloy lead frames material of the invention, its scope of design by expanding Ni, Si content, increase the quantity of alloy second phase of in-situ preparation in process of setting, and precipitated phase is precipitated to realize the promotion of intensity by the solid-state phase changes in heat treatment, it has prepared tensile strength and conductivity is in the Cu-Ni-Si alloy of optimal proportion, to meet the performance requirement of large scale integrated circuit copper alloy.
Description
Technical field
The present invention relates to Cu alloy material technical field, specifically a kind of Cu-Ni-Si alloy of high Ni, Si content
Blaster fuse frame material and preparation method thereof.
Background technique
With the continuous development of microelectronics industry, smart home, wearable device weed out the old and bring forth the new and high-performance computer
Change is accelerated increasingly, and hyundai electronics industry not only has higher requirements to the line optimization of integrated circuit, making technology, as integrated
The indispensable blaster fuse frame material of circuit package, because it carries multiple of fixed chip, information output and circuit heat dissipation etc.
Business.How research hotspot that its intensity, thermal conductivity and electric conductivity have become copper alloy field is improved conscientiously.Currently, existing
The circuit lead frame copper alloy mainly developed in technology has three kinds of Cu-Fe-P, Cu-Cr-Zr and Cu-Ni-Si alloy.
Wherein, Cu-Ni-Si alloy is widely used with its balanced electric conductivity with hardness number.
But the intensity index of copper alloy and conductive capability have shifting correlation, it may be assumed that guarantee preferably to lead
Electric rate is it is necessary to making sacrifices to strength character.In Cu-Ni-Si system alloy, nickel and silicon additional amount can excessively inhibit alloy
Electric conductivity, therefore, the total addition level of nickel and silicon in Cu-Ni-Si system alloy are usually not more than more 5wt%.But Ni-Si additive amount compared with
When few, the intensity of alloy will be lower, this is because: Cu-Ni-Si system alloy is mainly generated with the precipitated phase being precipitated in timeliness
Precipitation strength as strengthening mechanism.When Ni-Si additive amount is less, the negligible amounts of precipitated phase are generated, final alloy is most
Whole tensile strength will be lower.Therefore, the key point of alloy preparation technology is the premise for guaranteeing to significantly reduce electric conductivity
Under, farthest improve its intensity.
One kind high property used for lead frame disclosed in Chinese patent on April 24th, 2012 (publication number: 104630671 A of CN)
The heat treatment of energy copper alloy plate strip and processing technology pass through the techniques such as continuous casting, hot rolling, continuous annealing, cold rolling, ageing treatment, system
Though standby alloy conductivity maintains 60 ~ 70%IACS, the tensile strength of alloy is only 450MPa or so.Chinese patent
A kind of high-strength Cu-Ni-Si alloy of less anisotropy index disclosed on September 1st, 2015 (publication number: CN 105525135A)
And its preparation process, the technique accurately control the techniques such as texture features and control cold rolling by low-temperature annealing, grade and stage
Lower rate, obtains lateral shear band, effectively improves anisotropy.But the total content of Ni, Si are 2.5 ~ 4wt% in its alloy, are not had
Have and generate sufficient amount of precipitated phase, therefore, the raising of tensile strength is very limited.
Summary of the invention
The technology that cannot be combined to solve Cu-Ni-Si alloy conductive rate in the prior art with tensile strength is asked
Topic.In view of partial solid solubility of the Si in Cu matrix, the strong of alloy only cannot be obtained by the precipitated phase being precipitated in timeliness
The problem of degree is further promoted.The present invention provides a kind of preparation method of high-performance Cu-Ni-Si alloy lead frames material,
Its scope of design by expanding Ni, Si content, increases the quantity of alloy second phase of in-situ preparation in process of setting, and rely on
Precipitated phase is precipitated to realize the promotion of intensity in solid-state phase changes in heat treatment, has prepared tensile strength and conductivity and has matched in optimal
The Cu-Ni-Si alloy of ratio, to meet the performance requirement of large scale integrated circuit copper alloy.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: a kind of high-performance Cu-Ni-Si alloy
Blaster fuse frame material, including following components in percentage by weight: 4.0~9.0% nickel, 1.0~1.5% silicon, 0.1~0.4%
Silver, 0.05~0.10% phosphorus, surplus be copper and inevitable impurity element.The weight ratio of the silicon and nickel is 1:(4~6).
A kind of preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) it melting: is matched according to above-mentioned weight percent, weighs silico briquette, nickel block, copper billet, silver powder and phosphorus powder respectively, put into
Melting is carried out in vacuum non-consumable electrode arc melting furnace, being evacuated to pressure in furnace is 5 × 10-2Pa is then charged with argon gas extremely
Pressure is 45kPa in furnace, and control in-furnace temperature is increased to 1220~1290 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: liquid alloy made from step (1) being poured to cast from is placed in the ingot mould of ultrasound field in advance, and control is poured
Building temperature is 1100~1250 DEG C, and ingot casting is made, spare；
(3) hot rolling-press quenching: ingot casting made from step (2) is heated to 840~920 DEG C, keeps the temperature 10~20min, so
Hot rolling deformation processing is carried out afterwards, and control hot rolling deformation amount is 40~70%, and press quenching, and slab is made, spare；
(4) solution treatment: slab made from step (3) is placed in heat-treatment furnace, carry out grade and stage processing, then into
Row water quenching；
(5) it mills face: milling surface treatment being carried out to the slab after step (4) water quenching, to remove alloy surface oxide and Re Chu
Manage defect；
(6) cold rolling-timeliness: to step (5) mill surface treatment after slab carry out cold-rolling treatment, control deflection be 20~
80%, cold rolling rate is 0.1 s-1, ageing treatment is carried out later, controlled at 400~550 DEG C, keeps the temperature 0.5~7h, then certainly
So it is cooled to room temperature to get finished product blaster fuse frame material.
Further, in step (1), used silico briquette, nickel block and copper billet carry out over cleaning and table before melting
Face removes oxide process.
Further, in step (2), the power frequency of the ultrasound field is 40~120KHz, and is cast in liquid alloy
Before, ingot mould need to be previously heated to 195~205 DEG C, and smoked benzene processing is carried out to the inner surface of ingot mould.
Further, in step (3), the rolling rate when hot rolling deformation is handled is 0.1~1s-1, finishing temperature
It is 740~800 DEG C.
Further, in step (4), the grade and stage processing method particularly includes: first control in heat-treatment furnace
Temperature is warming up to 750~800 DEG C with the heating rate of 50~120 DEG C/min and carries out 8~20min of heat preservation, and then with 5~10
DEG C/heating rate of min is warming up to 860~960 DEG C, carry out 10~30min of heat preservation.
Further, in step (5), the single side milling amount of the milling surface treatment is 0.3~0.5mm, and unilateral milling amount is 1.5
~5.0mm.
Beneficial effects of the present invention:
(1) a kind of Cu-Ni-Si alloy lead frames material provided by the invention is added on the basis of Cu-Ni-Si alloy
Phosphorus, silver.Via the effect of the microalloying between several components, the excellent lead of tensile property and conductivity is constituted
Frame material copper alloy.In alloy compositions, the addition of nickel can sufficiently improve alloy elongation percentage and anti-softening temperature；Silver
Addition can greatly improve the conductivity of alloy, while also can be further improved the elongation percentage of alloy；The addition of phosphorus is conducive to
The refining and degasification of alloy.Since nickel and silicon additional amount can excessively inhibit the electric conductivity of alloy, so alloy of the invention is specific
Select the additional amount of nickel and silicon for 4.0~9.0% and 1.0~1.5%.Pass through the ingredient and its each component of restriction alloy in the present invention
Per distribution ratio, make each component comprehensive function, significantly improve the comprehensive performance of Cu-Ni-Si alloy material, make finished product Cu-Ni-
The tensile strength of Si alloy reaches 720~880MPa, and conductivity reaches 58~79%IACS, and elongation percentage is not less than 9%, softening temperature
Not less than 540 DEG C, it can preferably meet requirement of the circuit lead frame material to Cu-Ni-Si alloy property.
(2) a kind of Cu-Ni-Si alloy lead frames material of the invention assembles relationship in existing Cu-Ni-Si alloy
On the basis of, Ni and Si percentage composition is substantially increased, the purpose is to utilize generated in-situ Ni in process of setting3The second of Si
Mutually strengthen, and δ-Ni is precipitated by the solid-state phase changes in heat treatment2Precipitation strength caused by Si phase realizes that alloy material is strong
The promotion of degree, simultaneously as the precipitation of Ni, Si atom, is improved the conductivity of alloy also.
(3) present invention has abandoned the rolling and quenching technique that normative heat treatment method prepares copper alloy band in preparation step,
After hot rolling, using the cooling system of press quenching device make strip surface cover one layer flow under the laminar condition 1 ~
The water layer of 2mm, improves quenching rate, be effectively improved in conventional quenching means after strip coiling be sent to cooling bath it is cooling when, band
The inconsistent disadvantage of the inside and outside temperature drop of volume.The process characteristic of solution treatment is that the first order selects lower conventional solid solution temperature,
Second level temperature is higher, and the first order is lower to the heating speed between the solid solubility temperature of the second level, so as to polynary compared with low melting point
Eutectic phase can dissolve, and improve solute atoms solid solubility, to obtain more fully precipitating reinforcing effect.In conjunction with cold rolling-when
Effect means, to prepare tensile strength and conductivity in the Cu-Ni-Si alloy of optimal proportion, to meet large-scale integrated
The performance requirement of circuit copper alloy.
Specific embodiment
Only invention is further described in detail for following embodiments, but does not constitute any limitation of the invention.
A kind of high-performance Cu-Ni-Si alloy lead frames material, consists of the following components in percentage by weight: 1.0~
1.5% silicon, 4.0~9.0% nickel, 0.1~0.4% silver, 0.05~0.10% phosphorus, surplus be copper and inevitable impurity
Element.The weight ratio of the silicon and nickel is 1:(4~6).
A kind of preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weighing the silicon, nickel, copper billet for meeting proportion, to its surface clean, removes oxide, then weighs appropriate
Silver powder, phosphorus powder, immediately put into vacuum non-consumable electrode arc melting furnace in carry out melting, and be evacuated to pressure be 5 × 10- 2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, and later, control in-furnace temperature is increased to 1220~1290 DEG C and is melted
Refining, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 40~120KHz is previously heated to 195~205 DEG C, and
Smoked benzene processing is carried out to the inner surface of ingot mould, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature
Ingot casting is made at 1100~1250 DEG C in control, spare；
(3) hot rolling-press quenching: being heated to 840~920 DEG C for the ingot casting that step (2) obtains, keep the temperature 10~20min, into
The processing of row hot rolling deformation rolls rate control in 0.1~1s-1, hot rolling deformation amount 40~70%, finishing temperature is 740~800 DEG C,
And press quenching, slab is obtained, it is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, and classification is solid
Molten processing method particularly includes: first control the temperature in heat-treatment furnace be warming up to 750 with the heating rate of 50~120 DEG C/min~
800 DEG C carry out 8~20min of heat preservation, and then are warming up to 860~960 DEG C with the heating rate of 5~10 DEG C/min, are kept the temperature
10~30min then carries out water quenching；
(5) mill face: the alloy after step (4) solution treatment is subjected to milling face, mill surface treatment single side milling amount be 0.3~
0.5mm, unilateral milling amount is 1.5~5.0mm, to remove oxide on surface and heat treating fault；
(6) cold rolling-timeliness: the plate behind step (5) milling face is subjected to cold-rolling treatment, deflection is 20~80%, cold rolling speed
Rate control is 0.1~1s-1.Ageing treatment is carried out later, and temperature is 400~550 DEG C, 0.5~7h of heat preservation, air-cooled after completion of prescription
To room temperature to get finished product blaster fuse frame material.
Embodiment 1
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.0%
Silicon, 4.0% nickel, 0.1% silver, 0.05% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.0% silicon, 4.0% nickel, 94.85% copper billet, it is clear to its surface
It washes, removes oxide, then weigh 0.1% silver powder, 0.05% phosphorus powder, put into vacuum non-consumable electrode arc melting furnace immediately
Melting is carried out, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, is controlled in furnace
Temperature is increased to 1220 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 40KHz is previously heated to 195 DEG C, and in ingot mould
Surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature is controlled 1100
DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 840 DEG C, keeps the temperature 10min, carries out hot rolling change
Shape processing rolls rate control in 1s-1, hot rolling deformation amount 40%, and press quenching, finishing temperature are 740 DEG C, obtain slab, it is standby
With；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, is carried out rapid classification solution treatment, is first controlled
Temperature 50 C/min rises to 750 DEG C, keeps the temperature 8min, then be warming up to 860 DEG C with 5 DEG C/min, keeps the temperature 10min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.3mm, and unilateral milling amount is 1.5mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 20%, cold rolling rate control
It is made as 1 s-1, ageing treatment is carried out later, and temperature is 400 DEG C, keeps the temperature 0.5h, is air-cooled to room temperature after completion of prescription to get finished product
Blaster fuse frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 2
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.0%
Silicon, 5.0% nickel, 0.2% silver, 0.06% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.0% silicon, 5.0% nickel, 93.74% copper billet, it is clear to its surface
It washes, removes oxide, then weigh 0.2% silver powder, 0.06% phosphorus powder, put into vacuum non-consumable electrode arc melting furnace immediately
Melting is carried out, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, is controlled in furnace
Temperature is increased to 1230 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 50KHz is previously heated to 200 DEG C, and in ingot mould
Surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature is controlled 1120
DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 850 DEG C, keeps the temperature 10min, carries out hot rolling change
Shape processing rolls rate control in 0.9s-1, hot rolling deformation amount 50%, and press quenching, finishing temperature are 750 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
60 DEG C/min of degree rises to 760 DEG C, keeps the temperature 10min, then be warming up to 870 DEG C with 6 DEG C/min, keeps the temperature 12min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.3mm, and unilateral milling amount is 2.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 30%, cold rolling rate control
It is made as 0.8s-1, ageing treatment is carried out later, and temperature is 450 DEG C, keeps the temperature 2h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 3
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.2%
Silicon, 6.0% nickel, 0.2% silver, 0.07% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.2% silicon, 6.0% nickel, 92.53% copper billet, it is clear to its surface
It washes, removes oxide, then weigh 0.2% silver powder, 0.07% phosphorus powder, put into vacuum non-consumable electrode arc melting furnace immediately
Melting is carried out, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, is controlled in furnace
Temperature is increased to 1240 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 60KHz is previously heated to 198 DEG C, and in ingot mould
Surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature is controlled 1140
DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 860 DEG C, keeps the temperature 10min, carries out hot rolling change
Shape processing rolls rate control in 0.8s-1, hot rolling deformation amount 50%, and press quenching, finishing temperature are 760 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
70 DEG C/min of degree rises to 770 DEG C, keeps the temperature 12min, then be warming up to 870 DEG C with 6 DEG C/min, keeps the temperature 12min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.4mm, and unilateral milling amount is 2.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 40%, cold rolling rate control
It is made as 0.6s-1, ageing treatment is carried out later, and temperature is 450 DEG C, keeps the temperature 3h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 4
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.3%
Silicon, 6.5% nickel, 0.3% silver, 0.08% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.3% silicon, 6.5% nickel, 91.82% copper billet, it is clear to its surface
It washes, removes oxide, then weigh 0.3% silver powder, 0.08% phosphorus powder, put into vacuum non-consumable electrode arc melting furnace immediately
Melting is carried out, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, is controlled in furnace
Temperature is increased to 1250 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 70KHz is previously heated to 205 DEG C, and in ingot mould
Surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature is controlled 1150
DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 870 DEG C, keeps the temperature 15min, carries out hot rolling change
Shape processing rolls rate control in 0.7s-1, hot rolling deformation amount 60%, and press quenching, finishing temperature are 770 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
80 DEG C/min of degree rises to 780 DEG C, keeps the temperature 12min, then be warming up to 890 DEG C with 6 DEG C/min, keeps the temperature 15min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.4mm, and unilateral milling amount is 3.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 50%, cold rolling rate control
It is made as 0.5s-1, ageing treatment is carried out later, and temperature is 470 DEG C, keeps the temperature 2h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 5
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.4%
Silicon, 7.0% nickel, 0.4% silver, 0.09% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.4% silicon, 7.0% nickel, 91.11% copper billet, it is clear to its surface
It washes, removes oxide, then weigh 0.4% silver powder, 0.09% phosphorus powder, put into vacuum non-consumable electrode arc melting furnace immediately
Melting is carried out, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, is controlled in furnace
Temperature is increased to 1260 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 80KHz is previously heated to 200 DEG C, and in ingot mould
Surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, cast temperature is controlled 1180
DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 880 DEG C, keeps the temperature 15min, carries out hot rolling change
Shape processing rolls rate control in 0.5s-1, hot rolling deformation amount 60%, and press quenching, finishing temperature are 780 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
90 DEG C/min of degree rises to 790 DEG C, keeps the temperature 15min, then be warming up to 900 DEG C with 8 DEG C/min, keeps the temperature 20min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.4mm, and unilateral milling amount is 4.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 60%, cold rolling rate control
It is made as 0.3s-1, ageing treatment is carried out later, and temperature is 500 DEG C, keeps the temperature 2h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 6
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.5%
Silicon, 6.0% nickel, 0.4% silver, 0.1% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.5% silicon, 6.0% nickel, 92.0% copper billet, to its surface clean,
Oxide is removed, then weighs 0.4% silver powder, 0.1% phosphorus powder, puts into vacuum non-consumable electrode arc melting furnace carry out immediately
Melting, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, controls in-furnace temperature
1270 DEG C of progress meltings are increased to, liquid alloy is obtained, it is spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 100KHz is previously heated to 205 DEG C, and to ingot mould
Inner surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, and cast temperature control exists
1200 DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 900 DEG C, keeps the temperature 15min, carries out hot rolling change
Shape processing rolls rate control in 0.1s-1, hot rolling deformation amount 70%, and press quenching, finishing temperature are 790 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
100 DEG C/min of degree rises to 790 DEG C, keeps the temperature 20min, then be warming up to 920 DEG C with 8 DEG C/min, keeps the temperature 25min；Then carry out water quenching；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.5mm, and unilateral milling amount is 5.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 70%, cold rolling rate control
It is made as 0.2s-1, ageing treatment is carried out later, and temperature is 520 DEG C, keeps the temperature 2h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 7
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.5%
Silicon, 7.5% nickel, 0.4% silver, 0.1% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.5% silicon, 7.5% nickel, 90.5% copper billet, to its surface clean,
Oxide is removed, then weighs 0.4% silver powder, 0.1% phosphorus powder, puts into vacuum non-consumable electrode arc melting furnace carry out immediately
Melting, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, controls in-furnace temperature
1280 DEG C of progress meltings are increased to, liquid alloy is obtained, it is spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 100KHz is previously heated to 200 DEG C, and to ingot mould
Inner surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, and cast temperature control exists
1250 DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 910 DEG C, keeps the temperature 20min, carries out hot rolling change
Shape processing rolls rate control in 0.1s-1, hot rolling deformation amount 70%, and press quenching, finishing temperature are 790 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
100 DEG C/min of degree rises to 800 DEG C, keeps the temperature 20min, then be warming up to 960 DEG C with 10 DEG C/min, keeps the temperature 30min；Then carry out water
It quenches；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.5mm, and unilateral milling amount is 5.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 80%, cold rolling rate control
It is made as 0.1s-1, ageing treatment is carried out later, and temperature is 550 DEG C, keeps the temperature 4h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
Embodiment 8
A kind of high-performance Cu-Ni-Si alloy lead frames material, is made of following components in percentage by weight, 1.5%
Silicon, 9.0% nickel, 0.4% silver, 0.1% phosphorus, surplus be copper and inevitable impurity element.
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) melting: first weigh mass percent be 1.5% silicon, 9.0% nickel, 89.0% copper billet, to its surface clean,
Oxide is removed, then weighs 0.4% silver powder, 0.1% phosphorus powder, puts into vacuum non-consumable electrode arc melting furnace carry out immediately
Melting, and being evacuated to pressure is 5 × 10-2Pa, being subsequently charged with pressure in argon gas to furnace is 45kPa, later, controls in-furnace temperature
1290 DEG C of progress meltings are increased to, liquid alloy is obtained, it is spare；
(2) mold: the ingot mould for being placed on the ultrasound field that power frequency is 120KHz is previously heated to 205 DEG C, and to ingot mould
Inner surface carries out smoked benzene processing, later, the liquid alloy that step (1) obtains is poured and is cast from ingot mould, and cast temperature control exists
1250 DEG C, ingot casting is made, it is spare；
(3) hot rolling-press quenching: the ingot casting that step (2) obtains is heated to 920 DEG C, keeps the temperature 20min, carries out hot rolling change
Shape processing rolls rate control in 0.1s-1, hot rolling deformation amount 70%, and press quenching, finishing temperature are 800 DEG C, obtain slab,
It is spare；
(4) solution treatment: the slab of step (3) is placed in heat-treatment furnace, carries out rapid classification solution treatment, control temperature
120 DEG C/min of degree rises to 800 DEG C, keeps the temperature 20min, then be warming up to 960 DEG C with 10 DEG C/min, keeps the temperature 30min；Then carry out water
It quenches；
(5) it mills face: the alloy after step (4) solution treatment being subjected to milling face, removes oxide on surface and heat treating fault,
The single side milling amount for milling surface treatment is 0.5mm, and unilateral milling amount is 5.0mm；
(6) plate behind step (5) milling face cold rolling-timeliness: is subjected to cold-rolling treatment, deflection 80%, cold rolling rate control
It is made as 0.1s-1, ageing treatment is carried out later, and temperature is 550 DEG C, keeps the temperature 6h, is air-cooled to room temperature after completion of prescription and draws to get finished product
Wire frame frame material.
To Cu-Ni-Si alloy lead frames material manufactured in the present embodiment carry out tensile strength, conductivity, elongation percentage and
The measurement of the equal alloy properties of softening temperature, result are as shown in table 1 below.
The primary alloy constituent of the present invention of table 1 and performance
Claims (6)
1. a kind of high-performance Cu-Ni-Si alloy lead frames material, which is characterized in that including following components in percentage by weight:
4.0~9.0% nickel, 1.0~1.5% silicon, 0.1~0.4% silver, 0.05~0.10% phosphorus, surplus is copper and inevitable
Impurity element；
The preparation method of high-performance Cu-Ni-Si alloy lead frames material, comprising the following steps:
(1) it melting: is matched according to above-mentioned weight percent, weighs silico briquette, nickel block, copper billet, silver powder and phosphorus powder respectively, put into vacuum
Melting is carried out in non-consumable electrode arc melting furnace, being evacuated to pressure in furnace is 5 × 10-2Pa is then charged in argon gas to furnace
Pressure is 45kPa, and control in-furnace temperature is increased to 1220~1290 DEG C of progress meltings, obtains liquid alloy, spare；
(2) mold: liquid alloy made from step (1) being poured to cast from is placed in the ingot mould of ultrasound field in advance, and control pours temperature
Degree is 1100~1250 DEG C, and ingot casting is made, spare；
(3) hot rolling-press quenching: being heated to 840~920 DEG C for ingot casting made from step (2), keep the temperature 10~20min, then into
The processing of row hot rolling deformation, control hot rolling deformation amount is 40~70%, and press quenching, and slab is made, spare；
(4) solution treatment: slab made from step (3) is placed in heat-treatment furnace, controls the temperature in heat-treatment furnace first with 50
The heating rate of~120 DEG C/min is warming up to 750~800 DEG C and carries out 8~20min of heat preservation, and then with 5~10 DEG C/min's
Heating rate is warming up to 860~960 DEG C, carries out 10~30min of heat preservation, then carries out water quenching；
(5) it mills face: milling surface treatment is carried out to the slab after step (4) water quenching, lacked with removing alloy surface oxide and heat treatment
It falls into；
(6) cold rolling-timeliness: the slab after step (5) are milled with surface treatment carries out cold-rolling treatment, and control deflection is 20~80%, cold
Rolling rate is 0.1 s-1, ageing treatment is carried out later, controlled at 400~550 DEG C, keeps the temperature 0.5~7h, then natural cooling
To room temperature to get finished product blaster fuse frame material.
2. a kind of high-performance Cu-Ni-Si alloy lead frames material according to claim 1, it is characterised in that: described
The weight ratio of silicon and nickel is 1:(4~6).
3. a kind of high-performance Cu-Ni-Si alloy lead frames material according to claim 1, it is characterised in that: in step
(1) in, before melting, progress over cleaning and surface removes oxide process for used silico briquette, nickel block and copper billet.
4. a kind of high-performance Cu-Ni-Si alloy lead frames material according to claim 1, it is characterised in that: in step
(2) in, the power frequency of the ultrasound field is 40~120KHz, and before liquid alloy casting, ingot mould need to be previously heated to 195
~205 DEG C, and smoked benzene processing is carried out to the inner surface of ingot mould.
5. a kind of high-performance Cu-Ni-Si alloy lead frames material according to claim 1, it is characterised in that: in step
(3) in, the rolling rate when hot rolling deformation is handled is 0.1~1s-1, finishing temperature is 740~800 DEG C.
6. a kind of high-performance Cu-Ni-Si alloy lead frames material according to claim 1, it is characterised in that: in step
(5) in, the single side milling amount of the milling surface treatment is 0.3~0.5mm, and unilateral milling amount is 1.5~5.0mm.
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