CN102172994A - Metal composite wire, preparation method thereof and metal wire - Google Patents
Metal composite wire, preparation method thereof and metal wire Download PDFInfo
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- CN102172994A CN102172994A CN2011100303922A CN201110030392A CN102172994A CN 102172994 A CN102172994 A CN 102172994A CN 2011100303922 A CN2011100303922 A CN 2011100303922A CN 201110030392 A CN201110030392 A CN 201110030392A CN 102172994 A CN102172994 A CN 102172994A
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Abstract
The invention discloses a metal composite wire, a preparation method thereof and a metal wire, wherein the metal composite wire comprises a core body, a protective layer and a cracking layer, wherein the core body is made of carbon steel, and the diameter of the core body is 0.1-0.3mm; the protective layer is covered on the surface of the core body, the thickness of the protective layer is 0.001-0.01mm, and the protective layer is made of soft copper; and the cracking layer is covered on the surface of the protective layer, the thickness of the cracking layer is 0.001-0.02mm, the cracking layer is made of zinc or zinc alloy, tortoise shell-like cracks are formed on the surface of the cracking layer, and the thickness of the cracking layer is not less than the that of the protective layer. By utilizing the metal composite wire of the embodiment of the invention, as the protective cover made of the soft copper is covered outside a steel wire, the metal composite wire is corrosion-resistant; and while the cracking layer is made of the zinc or the zinc alloy, and the tortoise shell-like cracks are formed on the surface of the cracking layer, on the one hand, a lubricating liquid can be promoted to enter into the processing interface of a mould and the steel wire during the wire drawing process, and the wire drawing finished product rate is improved, on the other hand, the capability of carrying cutting liquid of the steel wire is improved by matching the cracking layer with the cutting liquid during the cutting process, thereby being conductive to improving the cutting efficiency.
Description
Technical field
The present invention relates to the manufacture field of wafer, especially relate to the metal composite wire that is used for cut crystal, the preparation method and the metal wire rod of metal composite wire.
Background technology
When making various semiconductor devices, the raw material ingot cutting processing such as silicon, crystal that will comprise monocrystalline, polycrystalline or amorphous by slice processing are the thin plate or the wafer of predetermined thickness dimension.
Along with the develop rapidly of electronics industry, the application of wafer more and more widely, Wafer Machining also more and more comes into one's own, wherein wafer cutting is the important procedure of yield rate height in the restriction subsequent handling.
Adopt steel wire to cut in traditional silicon single crystal wire cutting technology.Steel wire generally is a carbon steel material, the about 0.8-1% of carbon content, and its corrosion resistance is poor.Because copper has excellent corrosion resisting performance, proposed to coat the composite wire structure of the soft fine copper of one deck on the steel wire surface.In the preparation process of steel wire, at first, electroplate layer of copper then with the rough certain size that arrives of steel wire, carefully move aimed dia again to and promptly make steel wire with copper capping layer.Soft copper capping layer can play the effect of the not processed mould scratch of protection steel wire in hot candied process, especially arrive the very thin steel wire of diameter, and such as diameter 0.1-0.3mm, soft copper capping layer can effectively be protected steel wire, improves yield rate.
Yet, because the ductility height of copper, copper extends along the steel wire surface and forms smooth surface in hot candied process, cause the factory interface that lubricating fluid is difficult to enter mould and steel wire in hot candied process on the one hand, cause hot candied difficulty, smooth steel wire surface is difficult to cooperate with the cutting liquid phase when cutting processing on the other hand, and cutting fluid is difficult for sticking to the steel wire surface, be that cutting fluid is difficult for being taken to the cutting interface by steel wire, cause problems such as cutting efficiency is low.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, one object of the present invention is to propose a kind of corrosion-resistant, metal composite wire that cutting efficiency is high.
Another object of the present invention is to propose a kind of preparation method of metal composite wire.
A further object of the present invention is to propose a kind of metal wire rod that is used to prepare the metal composite wire corrosion-resistant, that cutting efficiency is high.
According to the metal composite wire of the embodiment of first aspect present invention, comprising: core body, described core body are made of carbon steel and diameter is 0.1～0.3mm; Surface and thickness that protective layer, described protective layer are covered in described core body are 0.001～0.01mm, and described protective layer is made of soft copper; And the be full of cracks layer, surface and thickness that described be full of cracks layer is covered in described protective layer are 0.001～0.02mm, and described be full of cracks layer is made of zinc or kirsite and the surface is formed with tortoise plastron shape crackle, and the thickness of wherein said be full of cracks layer is not less than the thickness of described protective layer.
Utilize the metal composite wire of the above embodiment of the present invention, owing to outside steel wire, be coated with the protective layer that constitutes by soft copper, therefore corrosion-resistant; And on the one hand can in hot candied process, promote the factory interface that lubricating fluid enters mould and steel wire by the be full of cracks layer that zinc or kirsite constitute and the surface is formed with tortoise plastron shape crackle, improve hot candied yield rate, in cutting process, cooperate with cutting liquid on the other hand by this be full of cracks, improve the ability that steel wire carries cutting fluid, thereby help improving cutting efficiency, improve the wafer geometric parameter.Especially concerning diameter had only the fine steel wire of 0.1～0.3mm, the benefit that this feature is brought was very tangible, can significantly improve steel wire yield rate and cut quality.
In addition, metal composite wire according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, contain among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.Preferably, described kirsite is a pltine, and the copper content in the wherein said pltine is 1～60wt%.In zinc, add copper and can improve intensity, hardness and impact flexibility, but reduce plasticity and ductility.Become the phase that Cu-Zn dissolves each other fully when addition surpasses 60wt%, its plasticity and ductility begin again to strengthen.Therefore the content of the copper in the pltine is preferably 1～60wt%.
According to the preparation method of the metal composite wire of the embodiment of second aspect present invention, may further comprise the steps: 1) heart yearn is provided, and described heart yearn is made of carbon steel; 2) on described heart yearn surface soft copper layer is set; 3) superficial layer that constitutes by zinc or kirsite in the setting of described soft copper laminar surface, the thickness of described superficial layer is not less than the thickness of described soft copper layer; And 4) heart yearn that is provided with soft copper layer and superficial layer is carried out wire drawing processing; obtain metal composite wire; wherein the diameter of the core body that is formed after wire drawing processing by described heart yearn is 0.1～0.3mm; the thickness of the protective layer that is formed through wire drawing processing back by described soft copper layer is 0.001～0.01mm, and the thickness that the surface that is formed after wire drawing is processed by described superficial layer is formed with the be full of cracks layer of tortoise plastron shape crackle is the thickness that the thickness of 0.001～0.02mm and described be full of cracks layer is not less than described protective layer.
In order to improve the adhesion between soft copper layer and the heart yearn, the processing that can in step 1), remove the passivation layer of core surface.
The forming method of described soft copper layer is not subjected to particular restriction, for example, can be provided with by electro-coppering or hot dipping copper-plating method.
In one embodiment of the invention, form described soft copper layer by electro-coppering.Particularly, be negative electrode with the heart yearn, be electrolyte solution with acidified copper sulphate solution or acidifying copper pyrophosphate solution, be anode with the fine copper plate.In electroforming technology, by the control electrolyte concentration, be added in the thickness that voltage on negative electrode and the anode, wire rod hauling speed, electroplating time etc. can be controlled formed protective layer.So-called acidified copper sulphate solution or acidifying copper pyrophosphate solution are meant that the pH to copper-bath or copper pyrophosphate solution adjusts, and make its pH value be in acid range.
In other embodiment of the present invention, described soft copper layer is set by hot dipping copper facing.Described hot dipping copper facing is carried out under inert atmosphere, and the hot dipping melt that uses is 1100-1250 degree centigrade red copper melt.
The forming method of described superficial layer is not subjected to particular restriction, and for example, in some embodiments of the invention, described formation superficial layer is realized by electrogalvanizing or kirsite.In other embodiment of the present invention, described formation superficial layer is realized by galvanizing by dipping or kirsite.Wherein, can contain among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.Preferably, described kirsite is a pltine, and the copper content in the wherein said pltine is 1～60wt%.
In concrete examples more of the present invention, under inert atmosphere, make plating have the steel wire of soft copper layer to pass through 430-1000 degree centigrade zinc or pltine melt.Because the fusing point of zinc is about 420 degrees centigrade, the fusing point that contains the pltine of 60wt% copper is approximately 900 degrees centigrade, therefore and the fusing point of fine copper is about 1050 degrees centigrade, carries out galvanizing by dipping under the 430-1000 degrees celsius or the TC alloy can not cause remarkable influence to soft copper layer.In hot-dip process, can control the thickness of the superficial layer that is generated by the hauling speed, the displacement of wire rod in melt etc. of control wire rod.
Metal wire rod according to the embodiment of third aspect present invention comprises: heart yearn, and described heart yearn is made of carbon steel; Soft copper layer, described soft copper layer is covered in the surface of described heart yearn; And superficial layer, described superficial layer is covered in the surface of described soft copper layer and is made of zinc or kirsite, and the thickness of wherein said superficial layer is not less than the thickness of described soft copper layer.Alternatively, contain among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.Preferably, described kirsite is a pltine, and the copper content in the wherein said pltine is 1～60wt%.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic cross-section of metal wire rod according to an embodiment of the invention;
Fig. 2 is metal composite wire preparation method's a schematic flow sheet according to an embodiment of the invention;
Fig. 3 a is the schematic cross-section according to the metal composite wire of the embodiment of the invention; And
Fig. 3 b is that the master according to the metal composite wire of the embodiment of the invention looks schematic diagram.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
The preparation method of metal composite wire
The preparation method of the metal composite wire of the preparation embodiment of the invention is described below in conjunction with Fig. 1 and Fig. 2.
A) provide heart yearn.
Can select for use the high-carbon steel material to form as the material of heart yearn, for example No. 77 steel, No. 82 steel, No. 92 steel etc.Wherein, the diameter of heart yearn is 0.7mm.
In a concrete example of the present invention, the carbon steel line as heart yearn is carried out the surface remove the passivation layer processing, thus, can improve the bond strength of heart yearn and soft copper layer.
B) form soft copper layer on the heart yearn surface.
In a concrete example of the present invention, form soft copper layer 2 on the surface of heart yearn 1 by electro-coppering.Particularly, be negative electrode with heart yearn 1, be electrolyte solution (concentration of copper sulfate 300g/l, boric acid: 40g/lpH:2.5,50 degrees centigrade of liquid temperature, current density 20A/dm with acidified copper sulphate or acidifying cupric pyrophosphate
2), be sacrificial anode with the fine copper plate, the hauling speed of steel wire is 2m/min, forming thickness is the soft copper layer 2 of 0.025mm.
C) form the superficial layer that constitutes by zinc or kirsite at described soft copper laminar surface, and the thickness of described superficial layer is not less than the thickness of described soft copper layer.
Then, under inert atmosphere, make plating have the steel wire of soft copper layer 2 after paying out machine, straightener, pickled surface and oven dry are handled, to pass working furnace (being provided with 800 degrees centigrade zinc-copper (copper content 10wt%) alloy melt in the working furnace), make around the soft copper layer 2 superficial layer 3 that constitutes by pltine on the even plating, again through the supercooling take-up.By regulating the hauling speed of wire rod, the thickness of control table surface layer 3 is 0.07mm.
In another concrete example of the present invention, be provided with 600 degrees centigrade zinc melt in the working furnace, with the superficial layer 3 that on even plating around the soft copper layer 2, constitutes by zinc.
The metal wire rod of the embodiment of the invention is described below in conjunction with Fig. 1.
Metal wire rod according to the above embodiment of the present invention obtains as shown in Figure 1, comprises heart yearn 1, soft copper layer 2, superficial layer 3.Wherein, heart yearn 1 is made of carbon steel, and diameter is 0.7mm.Surface coverage at heart yearn 1 has soft copper layer 2, and soft copper layer 2 is made of copper and thickness is 0.025mm.Further, in the surface coverage of soft copper layer 2 superficial layer 3 is arranged, superficial layer 3 is made of zinc or pltine and thickness is 0.07mm.The thickness of superficial layer 3 is greater than the thickness of soft copper layer 2 herein, and this is to have enough thickness and the protective layer non-corrosive (patina) of crack depth to cooperate cutting liquid and to be formed by soft copper layer 2 by the protection of be full of cracks layer simultaneously in order to make by the be full of cracks layer of superficial layer through forming after the wire drawing processing after wire drawing processing.
Need to prove that above-mentioned size range is exemplary, can suitably adjust according to concrete needs.
D) heart yearn that is formed with soft copper layer and superficial layer is carried out wire drawing processing.
At last, the heart yearn 1 that is formed with soft copper layer 2 and superficial layer 3 is carried out wire drawing processing, obtain the metal composite wire that diameter is 0.14mm.
The preparation method who describes the metal composite wire of the embodiment of the invention below with reference to Fig. 3 a and Fig. 3 b prepares the metal composite wire of gained.
Shown in Fig. 3 a and Fig. 3 b, comprise core body 10, protective layer 20 and be full of cracks layer 30 according to the metal composite wire of the above embodiment of the present invention gained.Wherein, the diameter of the core body 10 that is formed after wire drawing processing by heart yearn 1 is 0.12mm; the thickness of the protective layer 20 that is formed through wire drawing processing back by soft copper layer 2 is 0.003mm, and the thickness that the surface that is formed after wire drawing is processed by superficial layer 3 is formed with the be full of cracks layer 30 of tortoise plastron shape crackle 31 is 0.007mm.
In hot candied process; because copper has good ductility; therefore extend equably as the copper of protective layer along with the carrying out of wire drawing and be covered in core body (being steel wire) surface; prevent from thus under the environment of humidity, to corrode, also stop face crack in hot candied process, to import core body inside into simultaneously as the steel wire of core body.
And since the ductility of zinc or pltine much smaller than copper, therefore add man-hour carrying out wire drawing, produce be full of cracks 31 at stress effect undersurface layer and form the be full of cracks layer, can in hot candied process, promote the factory interface that lubricating fluid enters mould and steel wire on the one hand, strengthen lubricated, improve hot candied precision and hot candied yield rate, on the other hand, be full of cracks 31 can cooperate (particularly well with cutting liquid in cutting process, be included in impregnation cutting liquid, abrasive particle etc. in this be full of cracks), thus the quality that can improve cutting efficiency significantly and cut wafer.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (13)
1. a metal composite wire is characterized in that, comprising:
Core body, described core body are made of carbon steel and diameter is 0.1～0.3mm;
Surface and thickness that protective layer, described protective layer are covered in described core body are 0.001～0.01mm, and described protective layer is made of soft copper; And
The be full of cracks layer, surface and thickness that described be full of cracks layer is covered in described protective layer are 0.001～0.02mm, described be full of cracks layer is made of zinc or kirsite and the surface is formed with tortoise plastron shape crackle,
The thickness of wherein said be full of cracks layer is not less than the thickness of described protective layer.
2. metal composite wire according to claim 1 is characterized in that, contains among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.
3. metal composite wire according to claim 2 is characterized in that, described kirsite is a pltine, and the copper content in the wherein said pltine is 1～60wt%.
4. the preparation method of a metal composite wire is characterized in that, may further comprise the steps:
1) provide heart yearn, described heart yearn is made of carbon steel;
2) form soft copper layer on described heart yearn surface;
3) form the superficial layer that is made of zinc or kirsite at described soft copper laminar surface, the thickness of described superficial layer is not less than the thickness of described soft copper layer; And
4) heart yearn that is formed with soft copper layer and superficial layer is carried out wire drawing processing; obtain metal composite wire; wherein; the diameter of the core body that is formed after wire drawing processing by described heart yearn is 0.1～0.3mm; the thickness of the protective layer that is formed through wire drawing processing back by described soft copper layer is 0.001～0.01mm, and the thickness that the surface that is formed after wire drawing is processed by described superficial layer is formed with the be full of cracks layer of tortoise plastron shape crackle is the thickness that the thickness of 0.001～0.02mm and described be full of cracks layer is not less than described protective layer.
5. the preparation method of metal composite wire according to claim 4 is characterized in that,
In step 1), comprise the passivation layer of removing core surface.
6. the preparation method of metal composite wire according to claim 4 is characterized in that,
In step 2) in, the soft copper layer of described formation is realized by electro-coppering or hot dipping copper facing.
7. the preparation method of metal composite wire according to claim 6 is characterized in that, described hot dipping copper facing is carried out under inert atmosphere, and the hot dipping melt that uses is 1100-1250 degree centigrade red copper melt.
8. the preparation method of metal composite wire according to claim 4 is characterized in that, in step 3), described formation superficial layer is realized by electrogalvanizing or kirsite.
9. the preparation method of metal composite wire according to claim 4 is characterized in that, in step 3), described formation superficial layer is realized by galvanizing by dipping or kirsite.
10. according to Claim 8 or the preparation method of 9 described metal composite wires, it is characterized in that, contain among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.
11. the preparation method of metal composite wire according to claim 9 is characterized in that, described galvanizing by dipping or kirsite carry out under inert atmosphere, and the melt that uses is 430-1000 degree centigrade zinc or pltine melt.
12. a metal wire rod is characterized in that, comprising:
Heart yearn, described heart yearn is made of carbon steel;
Soft copper layer, described soft copper layer is covered in the surface of described heart yearn; And
Superficial layer, described superficial layer are covered in the surface of described soft copper layer and are made of zinc or kirsite,
The thickness of wherein said superficial layer is not less than the thickness of described soft copper layer.
13. metal wire rod according to claim 13 is characterized in that, contains among Cu, Sn, Pb, Sb, Al, Mg, Ti, the Fe one or more in the described kirsite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110030392.2A CN102172994B (en) | 2011-01-27 | 2011-01-27 | Metal composite wire, preparation method thereof and metal wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110030392.2A CN102172994B (en) | 2011-01-27 | 2011-01-27 | Metal composite wire, preparation method thereof and metal wire |
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| CN102172994A true CN102172994A (en) | 2011-09-07 |
| CN102172994B CN102172994B (en) | 2014-11-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107020307A (en) * | 2017-06-07 | 2017-08-08 | 合肥汇之新机械科技有限公司 | A kind of processing technology of metal wire rod |
| CN107164682A (en) * | 2017-05-19 | 2017-09-15 | 浙江帝恒实业有限公司 | A kind of high-strength Antioxidant alloy material and preparation method thereof |
| WO2019062768A1 (en) * | 2017-09-26 | 2019-04-04 | 宁波康强微电子技术有限公司 | Manufacturing method of textured and coated electrode wire |
| CN110093644A (en) * | 2019-05-15 | 2019-08-06 | 江苏兴达钢帘线股份有限公司 | A kind of steel wire, its manufacturing method, wirerope and conveyer belt |
| CN113498543A (en) * | 2019-04-26 | 2021-10-12 | 住友电气工业株式会社 | Aluminum-based wire rod, stranded wire, and method for producing aluminum-based wire rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107164682A (en) * | 2017-05-19 | 2017-09-15 | 浙江帝恒实业有限公司 | A kind of high-strength Antioxidant alloy material and preparation method thereof |
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| US11766728B2 (en) | 2017-09-26 | 2023-09-26 | Ningbo Kangqiang Micro-Electronics Technology Co., Ltd. | Manufacturing method of textured and coated electrode wire |
| CN113498543A (en) * | 2019-04-26 | 2021-10-12 | 住友电气工业株式会社 | Aluminum-based wire rod, stranded wire, and method for producing aluminum-based wire rod |
| CN113498543B (en) * | 2019-04-26 | 2023-01-03 | 住友电气工业株式会社 | Aluminum-based wire rod, stranded wire, and method for producing aluminum-based wire rod |
| CN110093644A (en) * | 2019-05-15 | 2019-08-06 | 江苏兴达钢帘线股份有限公司 | A kind of steel wire, its manufacturing method, wirerope and conveyer belt |
| CN110093644B (en) * | 2019-05-15 | 2021-04-16 | 江苏兴达钢帘线股份有限公司 | Steel wire, manufacturing method thereof, steel wire rope and conveying belt |
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