CN102851535B - Copper-nickel 34 metal wire and preparation method thereof - Google Patents
Copper-nickel 34 metal wire and preparation method thereof Download PDFInfo
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- CN102851535B CN102851535B CN201210304004.XA CN201210304004A CN102851535B CN 102851535 B CN102851535 B CN 102851535B CN 201210304004 A CN201210304004 A CN 201210304004A CN 102851535 B CN102851535 B CN 102851535B
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Abstract
The invention relates to a relates to the field of copper-nickel alloy, and in particular relates to a copper-nickel 34 metal wire and a preparation method thereof. The copper-nickel 34 wire comprises, by weight, 33-35% of Ni, 0.05-0.6% of Mn, 0.01-0.5% of Fe, 0.01-0.3% of Ti, 0.01-0.1% of B, 0.001-0.05% of Re, and the balance of copper. The preparation method of the copper-nickel 34 metal wire comprises the following steps: conducting mixed melting according to the formula; peeling the obtained ingot and forging; drawing the forged blank; and repeating drawing and annealing for at least 2 times, until the copper-nickel 34 metal wire with desired specifications is obtained. The copper-nickel 34 metal wire prepared by the method of the invention has low resistance temperature coefficient, excellent corrosion resistance, good welding performance and processing performance, high tensile strength and elongation rate, and resistivity about 0.40 ohm.mm<2> / m.
Description
Technical field
The present invention relates to field of copper-nickel alloy, particularly, the present invention relates to a kind of copper nickel 34 wire and preparation method thereof.
Background technology
Cupronickel is also called copper-nickel alloy, is take nickel as the copper base alloy of main adding elements.The position of copper and mickel in the periodic table of elements is close, atomic radius difference seldom, all face-centered cubic lattices, therefore both energy complete miscibilities mutually, by the sosoloid tissue that the alloy of any proportions is all single, Complicated Copper nickelalloy containing other elements, great majority are also single sosoloid tissues.
Research proves, after adding nickel, the plasticity of copper declines few, but intensity has obvious rising.In other words, due to adding of nickel, copper-nickel alloy has a series of very excellent characteristic: (i) good mechanical property, has suitable intensity and excellent plasticity; (ii) all can carry out press working under room temperature and high temperature, improve intensity further by work hardening; (iii) excellent solidity to corrosion; (iv) resistivity is high.
In order to improve the performance of cupronickel further, manganese element can be added further.Manganese element can be used as reductor and as element sulphur being had to very large avidity.Add the resistance that manganese can improve cupronickel.
Copper nickel 34 refers to that nickel content is the cupronickel of about 34%, and such alloy has high electrical resistance and low resistance temperature coefficient.
Copper nickel 34 alloy species is more in the market, the NCO40 that such as Taixing Jin Wang electrical heating element company limited produces, and its main chemical compositions is 34% nickel, 1.0% manganese, and surplus is copper.This alloy maximum operation (service) temperature is 400 degrees Celsius, but its temperature coefficient of resistance and every mechanical property all can not meet existing needs.
Therefore, provide a kind of temperature coefficient of resistance lower, the cupronickel of every mechanical performance parameter such as tensile strength and unit elongation excellence is the technical barrier in affiliated field.
Summary of the invention
Copper nickel wire is the one of cupronickel goods, is applied to the electrical heating element in the low-voltage apparatus such as thermal overload relay, low-voltage circuit breaker.
For the deficiencies in the prior art, an object of the present invention is to provide a kind of copper nickel 34 wire.Described copper nickel 34 wire comprises according to weight percent:
In described copper nickel 34 wire, Ni content is 33 ~ 35%, such as: 33.1%, 33.2%, 33.3%, 33.4%, 34%, 34.6%, 34.7%, 34.8%, 34.9% etc.; Mn content is 0.05 ~ 0.6%, such as: 0.051%, 0.052%, 0.053%, 0.06%, 0.1%, 0.2%, 0.4%, 0.55%, 0.58%, 0.585%, 0.59%, 0.595%, 0.598%, 0.599% etc.; Fe content is 0.01 ~ 0.5%, such as: 0.011%, 0.012%, 0.013%, 0.1%, 0.3%, 0.4%, 0.45%, 0.48%, 0.49%, 0.495%, 0.497%, 0.498%, 0.499% etc.; Ti content is 0.01 ~ 0.3%, such as: 0.011%, 0.012%, 0.013%, 0.1%, 0.2%, 0.25%, 0.28%, 0.29%, 0.295%, 0.297%, 0.298%, 0.299% etc.; B content is 0.01 ~ 0.1%, such as: 0.011%, 0.012%, 0.013%, 0.05%, 0.08%, 0.09%, 0.091%, 0.095%, 0.097%, 0.098%, 0.099% etc.; Re content is 0.001 ~ 0.05%, such as: 0.0011%, 0.0012%, 0.0013%, 0.005%, 0.01%, 0.03%, 0.041%, 0.045%, 0.047%, 0.048%, 0.049% etc.; Surplus is copper.
Preferably, described copper nickel 34 wire comprises according to weight percent:
Preferably, described copper nickel 34 wire comprises according to weight percent:
Particularly preferably, described copper nickel 34 wire according to weight percent by following elementary composition:
Re of the present invention refers to rare earth element, and described rare earth element is lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), the combination of a kind of in scandium (Sc) and yttrium (Y) or at least two kinds, the example of described combination has: the combination of La and Ce, the combination of Pr and Nd, the combination of Pm and Sm, the combination of Eu and Gd, the combination of Tb and Dy, the combination of Ho and Er, the combination of Tm and Yb, the combination of Lu and Sc, the combination of Y and L, the combination of Ce and Pr, the combination of Nd and Pm, the combination of Sm and Eu, the combination of Gd and Tb, the combination of Dy and Ho, the combination of Er and Tm, the combination of Yb and Lu, the combination of Sc and Y, the combination of La and Pr, the combination of Ce and Nd, the combination of Pm and Eu, the combination of Nd and Gd, the combination of Tb and Ho, the combination of Er and Yb, the combination of Lu and Y, La, the combination of Ce and Pr, Nd, the combination of Pm and Sm, Eu, the combination of Gd and Tb, Tb, the combination of Dy and Ho, Er, the combination of Tm and Yb, Sc, the combination of Y and La, Ce, the combination of Pr and Nd, Pm, the combination of Sm and Eu, Gd, the combination of Tb and Dy, Ho, the combination of Er and Tm, Yb, Lu, the combination etc. of Sc and Y.Because the content of these elements in the earth's crust is rare, their oxide compound is close with soil color again, therefore is called rare earth element.
In described copper nickel 34 wire, Fe energy significantly crystal grain thinning, the intensity increasing cupronickel does not reduce plasticity again, especially can improve solidity to corrosion; Add manganese, can deoxidation and desulfurization, the intensity of alloy can be increased; Re can reduce sulphur content in alloy, carry heavy alloyed antioxidant property, carry heavy alloyed creep rupture strength, refined carbides, improve the homogeneity of carbide, carry heavy alloyed corrosion resistance nature, improve the welding property of alloy, reduce the probability that B alloy wire cracks, to prepare in drawing process not fracture of wire so that follow-up, improve the over-all properties of product.
Copper nickel 34 wire of the present invention also can contain other element.
Such as, described copper nickel 34 wire also can containing the Si of 0.001 ~ 0.3%, such as: 0.0011%, 0.0012%, 0.0013%, 0.005%, 0.01%, 0.1%, 0.2%, 0.25%, 0.28%, 0.29%, 0.298%, 0.299% etc., and preferably 0.1 ~ 0.2%.
Such as, described copper nickel 34 wire also can containing the Al of 0.1 ~ 1%, and such as 0.11%, 0.12%, 0.13%, 0.2%, 0.5%, 0.8%, 0.9%, 0.95%, 0.97%, 0.98%, 0.99% etc., preferably 0.2 ~ 0.5%.
Such as, described copper nickel 34 wire also can containing the Mo of 0.001 ~ 0.1%, such as: 0.0011%, 0.0012%, 0.0013%, 0.005%, 0.01%, 0.08%, 0.09%, 0.095%, 0.098%, 0.099% etc., and preferably 0.05 ~ 0.07%.
An object of the present invention is also to provide described copper nickel 34 purposes wiry, and described copper nickel 34 wire is for making the variable resistor of AC meter, resistive heater and strain resistance element.
An object of the present invention is also to provide described copper nickel 34 preparation method wiry, said method comprising the steps of:
(1) carry out mixed smelting according to formula, by the ingot casting peeling obtained, forge;
(2) rear blank drawing will be forged, drawing again, annealing, so repeat Drawing-anneal at least 2 times, until obtain copper nickel 34 wire of required specification.
First will forge rear blank drawing and obtain having the filament of certain diameter in described step (2), and then repeat drawing and annealing process.Described certain diameter is the arbitrary diameter being greater than final any products specification, and those skilled in the art can select the concrete numerical value of certain diameter herein voluntarily according to copper nickel 34 specification wiry finally expecting obtaining, the present invention is in this no limit.
By heating make metal by solid state transformation to liquid state and make satisfactory technological process such as its temperature, composition etc.Melting described in step (1) realizes by adopting vacuum intermediate-frequency induction melting furnace.
Ingot casting peeling makes the impurity major part produced during melting be removed, and decreases burr phenomena during subsequent handling drawing, decreases wire broken rate.
Forge after ingot casting peeling again, then carry out drawing, annealing can obtain copper nickel 34 wire finished product.
Multiplicity those skilled in the art of described Drawing-anneal can select voluntarily according to the experience of oneself, and preferably, the number of times that Drawing-anneal of the present invention repeats is more than 2 times, and such as 2,3,4,5, preferably 2 ~ 5 times, particularly preferably 4 ~ 5 times.Annealing can improve copper nickel 34 tensile strength wiry and unit elongation.Those skilled in the art can select how drawing and annealing voluntarily, and the present invention is only preferred herein, and non-limiting.
In the present invention, wire prepared by the cupronickel that it is about 34% that described copper nickel 34 wire refers to by nickel content.
Compared with prior art, prepared by the inventive method, copper nickel 34 wire has the following advantages:
(1) there is comparatively low resistance temperature coefficient;
(2) there is excellent erosion resistance;
(3) there is good welding property and processing characteristics;
(4) blank first melting obtained after melting carries out peeling, eliminates the impurity produced in most of fusion process, decreases burr phenomena during follow-up drawing, decreases wire broken rate;
(5) owing to annealing after drawing, improve final copper nickel 34 tensile strength wiry and unit elongation;
(6) there is about 0.40 Ω mm
2the resistivity of/m, meets the market requirement to this series products.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment is only help to understand the present invention, should not be considered as concrete restriction of the present invention.
Embodiment 1
The present embodiment copper nickel 34 wire is made up of Ni, the Mn of 0.6%, Fe, Ti, the B of 0.01% of 0.01%, the copper of the Re of 0.05% and 66.32% of 0.01% of 33%.
Prepare copper nickel 34 wire by the following method:
(1) by raw material mixed smelting, by the ingot casting peeling obtained, forge;
(2) obtain after diameter is the filament of 4.0mm by forging rear blank drawing, drawing obtains the filament after annealing that diameter is 1.0mm again, drawing obtains the filament after annealing that diameter is 0.3mm again, drawing obtains the filament after annealing that diameter is 0.15mm again, finally obtains the filament that diameter is 0.15mm.
Embodiment 2
Copper nickel 34 wire is made up of the Ni of 35%, Mn, the Fe of 0.5%, Ti, B, the Re of 0.001% of 0.1%, the copper of the Si of 0.3% and 63.749% of 0.3% of 0.05%.
Prepare copper nickel 34 wire by the following method:
(1) by raw material mixed smelting, by the ingot casting peeling obtained, forge;
(2) obtain after diameter is the filament of 8.0mm by forging rear blank drawing, drawing obtains the filament after annealing that diameter is 6.0mm again, repeats Drawing-anneal 6 times, finally obtains the filament that diameter is 0.05mm.
Embodiment 3
Copper nickel 34 wire is made up of the Ni of 34%, Mn, the Fe of 0.1%, Ti, V, the B of 0.04% of 0.05%, the copper of the Re of 0.03% and 65.33% of 0.15% of 0.3%.
Prepare copper nickel 34 wire by the following method:
(1) by raw material mixed smelting, by the ingot casting peeling obtained, forge;
(2) obtain after diameter is the filament of 6.0mm by forging rear blank drawing, drawing obtains the filament after annealing that diameter is 4.0mm again, repeats Drawing-anneal 3 times, finally obtains the filament that diameter is 0.1mm.
Embodiment 4
Copper nickel 34 wire is made up of the Ni of 34.1%, Mn, the Fe of 0.055%, Ti, V, the B of 0.035% of 0.07%, the copper of the Re of 0.02% and 65.55% of 0.06% of 0.11%.
Prepare copper nickel 34 wire by the following method:
(1) by raw material mixed smelting, by the ingot casting peeling obtained, forge;
(2) obtain after diameter is the filament of 3.0mm by forging rear blank drawing, drawing obtains the filament after annealing that diameter is 1.0mm again, repeats Drawing-anneal 2 times, finally obtains the filament that diameter is 0.08mm.
Comparative example
The NCO40 produced with Taixing Jin Wang electrical heating element company limited is for comparative example.
Copper nickel 34 wire produced embodiment 1-4 according to GB/T1234-95 and comparative example are tested, and test result is shown in Table 1.
Table 1
As shown in Table 1, copper nickel 34 wire of the present invention is much better than existing copper nickel 34 wire.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. copper nickel 34 wire, comprises according to weight percent:
2. copper nickel 34 wire as claimed in claim 1, it is characterized in that, described wire comprises according to weight percent:
3. copper nickel 34 wire as claimed in claim 1, it is characterized in that, described wire comprises according to weight percent:
4. copper nickel 34 wire as claimed in claim 1, is characterized in that, described wire according to weight percent by following elementary composition:
5. copper nickel 34 purposes wiry as claimed in claim 1, is characterized in that, described copper nickel 34 wire is for making the variable resistor of AC meter, resistive heater and strain resistance element.
6. copper nickel 34 preparation method wiry as claimed in claim 1, is characterized in that, said method comprising the steps of:
(1) carry out mixed smelting according to formula, by the ingot casting peeling obtained, forge;
(2) rear blank drawing will be forged, drawing again, annealing, so repeat Drawing-anneal at least 2 times, until obtain copper nickel 34 wire of required specification.
7. method as claimed in claim 6, is characterized in that, melting described in step (1) realizes by adopting vacuum intermediate-frequency induction melting furnace.
8. method as claimed in claim 6, is characterized in that, the number of times that the described Drawing-anneal of step (2) repeats is more than 2 times.
9. method as claimed in claim 8, is characterized in that, the number of times that the described Drawing-anneal of step (2) repeats is 2 ~ 5 times.
10. method as claimed in claim 9, is characterized in that, the number of times that the described Drawing-anneal of step (2) repeats is 4 ~ 5 times.
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| CN103093855A (en) * | 2013-01-30 | 2013-05-08 | 东南大学 | High conductivity rare earth hard aluminum conductor and preparation method |
| CN106480335A (en) * | 2015-09-01 | 2017-03-08 | 兴化市兴成铜业有限公司 | A kind of material containing high Alpaka |
| CN106435259A (en) * | 2016-10-20 | 2017-02-22 | 江苏博迁新材料股份有限公司 | Copper-nickel alloy powder for ultralow-resistance chip resistor |
| CN106834799A (en) * | 2017-03-01 | 2017-06-13 | 桥运精密部件（苏州）有限公司 | Wire of a kind of cupro-nickel 30 and preparation method thereof |
| CN108893648B (en) * | 2018-07-20 | 2020-06-26 | 江西理工大学 | Preparation method of yttrium-based heavy rare earth copper-nickel alloy |
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| CN102146533A (en) * | 2011-03-25 | 2011-08-10 | 富威科技（吴江）有限公司 | Formula of copper nickel tin alloy strip and production process |
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