CN107974574A - A kind of complex brass alloy of proof stress relaxation and preparation method thereof - Google Patents
A kind of complex brass alloy of proof stress relaxation and preparation method thereof Download PDFInfo
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- CN107974574A CN107974574A CN201711290855.2A CN201711290855A CN107974574A CN 107974574 A CN107974574 A CN 107974574A CN 201711290855 A CN201711290855 A CN 201711290855A CN 107974574 A CN107974574 A CN 107974574A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- 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
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Abstract
The present invention relates to a kind of complex brass alloy of proof stress relaxation, it contains the chemical composition of following percetage by weight, Sn containing Zn, more than 0.1% and less than 1.0% for having more than 2.0% and less than 27.9%, 0.05% less than 1.0% Ni, 0.003% less than 0.05% Fe, 0.005% less than 0.03% Mg, 0.03% less than 0.1% Cr, 0.005% less than 0.03% Zr, more than 0.001% and less than 0.10% P, remainder is made of Cu and inevitable impurity.
Description
Technical field
The invention mainly relates to technical field of nonferrous metal processing, more particularly to a kind of complex brass of proof stress relaxation
Alloy and preparation method thereof.
Background technology
The common binary Cu-Zn alloys of conventional conduction original paper generally use, mainly common brass alloys have higher
Intensity, good cold and hot working and the low cost of raw material.The conducting element of electronic electric equipment is with intelligent terminal, intelligence
The development and application of product, propose the bendability of material, conductivity, stress relaxation characteristics the requirement of higher, and general
The comprehensive performance of logical binary Cu-Zn alloys is unable to meet demand.
In order to improve the proof stress relaxation property of the Cu-Zn systems alloy used in the conducting element of electronic electric equipment,
Sn elements are often added in the alloy.Sn element solid solutions and the intensity, elasticity and hardness that alloy can be improved in alloy well, together
When can be obviously improved the proof stress slackness of alloy, but can not obtain the characteristic having both using single alloying element is added.
The content of the invention
In view of the deficienciess of the prior art, the present invention is intended to provide a kind of proof stress relaxation complex brass alloy and its
Preparation method, by Cu-Zn alloys add Ni, Fe, Mg, Cr, Ti element, and by constituent content than optimization, obtain
More excellent proof stress relaxation property, while ensure that alloy has good mechanical property and electric conductivity.
To achieve the above object, the present invention provides following technical solution：
A kind of complex brass alloy of proof stress relaxation, it contains the chemical composition of following percetage by weight, containing having more than 2.0%
And the Sn of less than 27.9% Zn, more than 0.1% and less than 1.0%, 0.05% less than 1.0% Ni, more than 0.003% and small
Fe in 0.05%, 0.005% less than 0.03% Mg, 0.03% less than 0.1% Cr, more than 0.005% and small
The P of Zr, more than 0.001% and less than 0.10% in 0.03%, remainder are made of Cu and inevitable impurity.
As the improvement of the present invention, the alloy includes the matrix phase α phases being made of the Cu with impurity, further comprises
Include precipitate one or more in Fe, Ni, P element, the average grain diameter of its precipitate is in below 80nm；And include
One or more precipitate in Cu, Zr, Cr, Mg element, its precipitate average grain diameter is in below 50nm.
As a further improvement on the present invention, the ratio between total content (Ni+Fe) of Ni, Fe and content of P (Ni+Fe)/P are full
3 ＜ of foot (Ni+Fe)/P ＜ 11,
The ratio between the content of Sn and total content (Ni+Fe) of Ni, Fe Sn/ (Ni+Fe) meet 0.6 ＜ Sn/ (Ni+Fe) ＜ 8,
The ratio between total content (Cr+Zr) of Cr, Zr and the content of Mg (Cr+Zr)/Mg meet 2 ＜ (Cr+Zr)/Mg ＜ 6.
A kind of method for being used to prepare above-mentioned complex brass alloy, including following technological process：A. according to mass percent
Carry out dispensing, feed intake, melting and casting, b. on-line solutions, c. milling faces, d. roughing, e. intermediate annealings, f. pickling, rolls in g., h.
Bell jar is annealed, i. finish rolling, j. pickling, k. stretch-bending straightenings, l. process annealings, m. sub-cuts, n. packaging and storages.
As the improvement of above-mentioned technique, in step a, founding, institute are carried out under non-vacuum environment using power frequency induction furnace
The temperature control of casting is stated at 1150~1200 DEG C, is cast using horizontal casting mode；
In stepb, carry out on-line solution processing to made-up belt in above-mentioned horizontal casting exit, solid solubility temperature control 700 ~
970℃。
As the preferred of above-mentioned technique, in step e, the band after roughing is made annealing treatment in bell-type annealing furnace,
Eliminate processing hardening, recrystallize, carry out a timeliness, annealing temperature is 500 ~ 550 DEG C, keeps the temperature 1 ~ 5h.
Further as above-mentioned technique is improved, in step h, in roll after band anneal in bell-type annealing furnace
Processing, eliminates processing hardening, recrystallization and secondary ageing occurs, control average grain size and precipitation size, annealing temperature
For 400 ~ 500 DEG C, the time is 1 ~ 5h.
As the further preferred of above-mentioned technique, in step i, the band after annealing is subjected to finish rolling, deflection
For 30~50%.
As the concrete technical scheme of above-mentioned technique, in step l, process annealing is carried out in continuous annealing furnace, to disappear
Except residualinternal stress, alloy proof stress relaxation property is improved, annealing temperature is 150 ~ 350 DEG C, speed 35m/min.
Compared with prior art, the advantage of the invention is that：Above-mentioned proof stress relaxation complex brass alloy, addition are appropriate
Sn, while suitable Fe, Ni are added together with P element, Fe, Ni, P system precipitate separated out from α matrixes can be obtained so that
The effective proof stress relaxation property for improving alloy.Appropriate Cr and Zr are added in above-mentioned alloy, and content is adjusted to reasonable
Scope, Cu, Zr, Cr system precipitate is separated out from matrix, so that alloy obtains good proof stress relaxation property.Add at the same time
Suitable Mg elements, can refine precipitated phase, improve conductivity, and further improve the proof stress relaxation property of alloy.Letter
Single addition Cr, Zr, Mg element cannot sufficiently improve proof stress relaxation property, and be easy to cause other characteristics and become not fill
Point.In the present invention, by the way that the relative ratios of the content of these elements are limited in the range of specified in each formula, energy
Meet intensity and conductivity requirements while enough reliably and adequately improving proof stress relaxation property.And preparing above-mentioned alloy
In technique, by using the method for direct-on-line solid solution after horizontal casting, made-up belt residual temperature is taken full advantage of, shortens technique stream
Journey, it is not necessary to which dedicated solid solution equipment, has saved cost, while the made-up belt hardness after solution treatment has declined, after reducing
Abrasion during continuous milling face to cutter.In addition, in the case where ensureing low cost, material has higher comprehensive performance, meets
Requirement of the conducting element of electronic electric equipment to material.The alloy formula and manufacture processing method provided according to the present invention, obtains
To a kind of electronic electric equipment complex brass alloy, its tensile strength reaches more than 650MPa, conductivity 35%IACS with
On, when 200 is small under the conditions of 125 DEG C stress relaxation-resistant rate more than 88%.
Subordinate list explanation
Table 1 is the alloying component formula table of embodiment 1-11 in the present invention；
Table 2 is the alloy property table of embodiment 1-11 in the present invention.
Embodiment
A kind of embodiment of complex brass alloy of proof stress relaxation and preparation method thereof in the present invention is done with reference to subordinate list
Further illustrate.
As in the attached table, the preparation of the complex brass alloy in the present embodiment and processing technology are：A. according to quality percentage
Than carrying out dispensing, feeding intake, melting and casting, b. on-line solutions, c. milling faces, d. roughing, e. intermediate annealings, f. pickling, rolls in g.,
H. bell jar is annealed, i. finish rolling, j. pickling, k. stretch-bending straightenings, l. process annealings, m. sub-cuts, n. packaging and storages.
The alloy of the present invention uses following raw material melting：Cathode copper, pure nickel, iron plate, pure tin, zinc ingot metal, copper-phosphorus alloy, copper magnesium
Alloy, chromiumcopper, copper zirconium alloy.
Embodiment 1
The component of alloy is shown in Table 1 embodiment 1.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1170 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 700 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 500 DEG C, keeps the temperature 5h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 400 DEG C, time 5h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 150
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 1 in 2.
Embodiment 2
The component of alloy is shown in Table 1 embodiment 2.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1200 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 510 DEG C, keeps the temperature 4h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 420 DEG C, time 4h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 40%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 200
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 2 in 2.
Embodiment 3
The component of alloy is shown in Table 1 embodiment 3.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1180 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 850 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 520 DEG C, keeps the temperature 3h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 3h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 50%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 300
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 3 in 2.
Embodiment 4
The component of alloy is shown in Table 1 embodiment 4.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1150 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 900 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 530 DEG C, keeps the temperature 2h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 470 DEG C, time 2h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 200
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 4 in 2.
Embodiment 5
The component of alloy is shown in Table 1 embodiment 5.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1160 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 970 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 540 DEG C, keeps the temperature 1h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 500 DEG C, time 1h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 200
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 5 in 2.
Embodiment 6
The component of alloy is shown in Table 1 embodiment 6.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1190 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 750 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 550 DEG C, keeps the temperature 1h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 1h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 40%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 200
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 6 in 2.
Embodiment 7
The component of alloy is shown in Table 1 embodiment 7.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1180 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 530 DEG C, keeps the temperature 5h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 4h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 40%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 250
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 7 in 2.
Embodiment 8
The component of alloy is shown in Table 1 embodiment 8.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1170 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 500 DEG C, keeps the temperature 3h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 3h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 200
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 8 in 2.
Embodiment 9
The component of alloy is shown in Table 1 embodiment 9.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1160 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 500 DEG C, keeps the temperature 1h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 5h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 250
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 9 in 2.
Embodiment 10
The component of alloy is shown in Table 1 embodiment 10.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1170 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 520 DEG C, keeps the temperature 4h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, time 3h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 30%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 250
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 10 in 2.
Embodiment 11
The component of alloy is shown in Table 1 embodiment 11.
In step a, the particular order that feeds intake is：First add copper（Cu）, nickel（Ni）, iron（Fe）, again low after fusing
Temperature is lower to add tin（Sn）, zinc ingot metal（Zn）, treat that all melting low temperature adds copper phosphorus（Cu-P）, copper magnesium alloy（Cu-Mg）, chromiumcopper
（Cu-Cr）, copper zirconium alloy（Cu-Zr）（Added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and is realized
The stable homogeneous of component）, components tests are qualified and after clearing up clinker, use the charcoal after baking to cover；Using line-frequency induction
Stove carries out founding under non-vacuum environment, and the temperature control of the casting is cast at 1200 DEG C using horizontal casting mode.
In step b, strand is subjected to on-line solution processing, solid solubility temperature is 800 DEG C, then winds coiled base；
In step e, the band after roughing carries out intermediate annealing in clock hood type furnace, and annealing temperature is 520 DEG C, keeps the temperature 5h；
In step h, in roll after band made annealing treatment in bell-type annealing furnace, annealing temperature be 450 DEG C, speed 3h；
In step i, the band after bell jar is made annealing treatment carries out finish rolling, deflection 40%；
In step l, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 250
℃；
By above melting, on-line solution, milling face, roughing, bell jar annealing, in roll, bell jar annealing, finish rolling, stretch bending is rectified, low temperature is opened
After the working processes such as power annealing, its performance is shown in Table the embodiment 11 in 2.
The alloying component formula of table 1, embodiment 1-11（wt%）
The alloy property table of 2 embodiment 1-11 of table
The above makes the preferred embodiment of the present invention, does not depart from original of the invention for those of ordinary skill in the art
On the premise of reason, some variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of complex brass alloy of proof stress relaxation, it contains the chemical composition of following percetage by weight, containing having more than
The Sn of 2.0% and less than 27.9% Zn, more than 0.1% and less than 1.0%, 0.05% less than 1.0% Ni, more than 0.003%
And less than 0.05% Fe, 0.005% less than 0.03% Mg, 0.03% less than 0.1% Cr, more than 0.005%
And the P of Zr, more than 0.001% and less than 0.10% less than 0.03%, remainder are made of Cu and inevitable impurity.
2. complex brass alloy according to claim 1, it is characterised in that：The alloy includes by the Cu and impurity
The matrix phase α phases of composition, further comprises and include precipitate one or more in Fe, Ni, P element, its precipitate is averaged
Particle diameter is in below 80nm；And include precipitate one or more in Cu, Zr, Cr, Mg element, its precipitate average grain diameter
In below 50nm.
3. complex brass alloy according to claim 2, it is characterised in that：Total content (Ni+Fe) of Ni, Fe are with P's
The ratio between content (Ni+Fe)/P meets 3 ＜ (Ni+Fe)/P ＜ 11,
The ratio between the content of Sn and total content (Ni+Fe) of Ni, Fe Sn/ (Ni+Fe) meet 0.6 ＜ Sn/ (Ni+Fe) ＜ 8,
The ratio between total content (Cr+Zr) of Cr, Zr and the content of Mg (Cr+Zr)/Mg meet 2 ＜ (Cr+Zr)/Mg ＜ 6.
4. a kind of method for being used to prepare complex brass alloy as claimed in claim 1, including following technological process：A. according to matter
Amount percentage carries out dispensing, feeds intake, melting and casting, b. on-line solutions, c. milling faces, d. roughing, e. intermediate annealings, f. pickling,
G. rolled in, the annealing of h. bell jars, i. finish rolling, j. pickling, k. stretch-bending straightenings, l. process annealings, m. sub-cuts, n. packaging and storages.
5. preparation method according to claim 4, it is characterised in that：In step a, using power frequency induction furnace antivacuum
Founding is carried out under environment, the temperature control of the casting is cast at 1150~1200 DEG C using horizontal casting mode；
In stepb, carry out on-line solution processing to made-up belt in above-mentioned horizontal casting exit, solid solubility temperature control 700 ~
970℃。
6. preparation method according to claim 4, it is characterised in that：In step e, the band after roughing is moved back in bell-jar
Stove is made annealing treatment, and is eliminated processing hardening, is recrystallized, and carries out a timeliness, and annealing temperature is 500 ~ 550 DEG C, is protected
1 ~ 5h of temperature.
7. preparation method according to claim 4, it is characterised in that：In step h, in roll after band moved back in bell-jar
Stove is made annealing treatment, and eliminates processing hardening, recrystallization and secondary ageing occurs, control average grain size and precipitate ruler
Very little, annealing temperature is 400 ~ 500 DEG C, and the time is 1 ~ 5h.
8. preparation method according to claim 4, it is characterised in that：In step i, the band after annealing is carried out
Finish rolling, deflection are 30~50%.
9. preparation method according to claim 4, it is characterised in that：In step l, low temperature is carried out in continuous annealing furnace
Annealing, to eliminate residualinternal stress, improves alloy proof stress relaxation property, annealing temperature is 150 ~ 350 DEG C, speed 35m/
min。
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| CN109266877A (en) * | 2018-11-01 | 2019-01-25 | 福建紫金铜业有限公司 | A kind of preparation method of high property copper alloy |
| WO2019237215A1 (en) * | 2018-06-12 | 2019-12-19 | 宁波博威合金材料股份有限公司 | Copper alloy and use thereof |
| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
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| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
| 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 |
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