CN111451312A - Processing method of superfine aluminum wire - Google Patents
Processing method of superfine aluminum wire Download PDFInfo
- Publication number
- CN111451312A CN111451312A CN202010264345.3A CN202010264345A CN111451312A CN 111451312 A CN111451312 A CN 111451312A CN 202010264345 A CN202010264345 A CN 202010264345A CN 111451312 A CN111451312 A CN 111451312A
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- China
- Prior art keywords
- aluminum
- wire
- metal
- metal layer
- copper
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
Abstract
The invention discloses a processing method of an ultrafine aluminum wire, which comprises the following steps: s1: drawing an aluminum core wire, wherein the wire diameter is controlled to be 0.1-2mm, a metal layer is wrapped outside the aluminum core wire, and the metal activity of aluminum is greater than that of the metal layer; s2: performing bundle twisting treatment on a plurality of metal aluminum core wires by using a bundle twisting machine; s3: wrapping the same metal layer outside the stranded metal aluminum core wire harness or sleeving the same metal sleeve, and performing secondary wire drawing, wherein the thickness of the wrapped metal layer or the metal sleeve is 0.05-0.2 of the diameter of the metal aluminum core wire harness, and the diameter of the aluminum wire is controlled to be 0.5-1.5 mu m after wire drawing; s4: stripping the metal layer by electrolytic pickling, pickling with 10-30% strong acid at 20-40 ℃, wherein the positive electrode adopts an aluminum bar, the negative electrode adopts a lead plate, the current is controlled to be 18XA-22XA, X is the number of aluminum wires in the electrolytic pickling tank, and pure aluminum wires are left after stripping the metal layer.
Description
Technical Field
The invention relates to a processing method of an ultrafine aluminum wire.
Background
In the prior art, the aluminum wire is usually manufactured by drawing through a drawing machine, the wire diameter of the aluminum wire is directly controlled by the aperture of a drawing hole, however, the aluminum material has high hardness and poor toughness and is easy to break in the drawing process, and compared with copper, the fineness of drawn wire cannot be compared with that of the copper, so that the existing drawing method cannot be used for preparing superfine aluminum wire, especially for preparing aluminum wire with the wire diameter of the order of mum.
In addition, computer housings and L ED lamp housings are usually made of plastics at present, however, no matter the computer housings or L ED lamp housings need to have good heat dissipation effects, the method adopted by the prior art comprises the steps of 1, adopting a mode of wrapping aluminum sheets with plastics, namely embedding the aluminum sheets into the plastics for heat dissipation, and adopting the scheme to not only complicate the production process but also have non-plasticity and cannot manufacture shells with complex shapes, and 2, preparing the shells after plastic particles are prepared by mixing the aluminum powders and the plastics, wherein when the scheme is adopted, the aluminum powders and the plastics are not easy to be uniformly mixed, and the aluminum powders are distributed in the middle points of the plastics in a shape, so that the strength of the plastics cannot be improved, and the heat dissipation effect is poor.
Therefore, how to add the superfine aluminum wires into the plastic for mixing to prepare the heat-conducting plastic and how to prepare the superfine aluminum wires become technical problems which are urgently needed to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a processing method of an ultrafine aluminum wire, which can be used for preparing the ultrafine aluminum wire and is not easy to break.
In order to realize the technical effects, the technical scheme of the invention is as follows: a processing method of an ultra-fine aluminum wire comprises the following steps:
s1: drawing an aluminum core wire, wherein the wire diameter is controlled to be 0.1-2mm, a metal layer is wrapped outside the aluminum core wire, and the metal activity of aluminum is greater than that of the metal layer;
s2: performing bundle twisting treatment on a plurality of metal aluminum core wires by using a bundle twisting machine;
s3: wrapping the same metal layer outside the stranded metal aluminum core wire harness or sleeving the same metal sleeve, and performing secondary wire drawing, wherein the thickness of the wrapped metal layer or the metal sleeve is 0.05-0.2 of the diameter of the metal aluminum core wire harness, and the diameter of the aluminum wire is controlled to be 0.5-1.5 mu m after wire drawing;
s4: stripping the metal layer by electrolytic pickling, pickling with 10-30% strong acid at 20-40 ℃, wherein the positive electrode adopts an aluminum bar, the negative electrode adopts a lead plate, the current is controlled to be 18XA-22XA, X is the number of aluminum wires in the electrolytic pickling tank, and pure aluminum wires are left after stripping the metal layer.
The further improvement is that the aluminum core wire is a copper-clad wire, and the stranded copper-clad aluminum wire is wrapped with a copper sheet or sleeved with a copper sleeve and then subjected to secondary wire drawing.
In a further improvement, in step S4, the strong acid is hydrochloric acid or sulfuric acid.
In a further refinement, the strong acid concentration is 20%.
In a further refinement, the current control is 20 XA.
In a further improvement, in step S3, the wire diameter of the aluminum wire after wire drawing is controlled to be 1 μm.
In a further improvement, the method also comprises the step of extracting copper by using a copper extracting machine.
The invention has the advantages and beneficial effects that: the aluminum core is wrapped by metal with metal activity which is lower than that of aluminum, the aluminum wire can be drawn more finely by utilizing the ductility and the toughness of the aluminum core, and the metal layer can be stripped in an electrolytic pickling mode to obtain the superfine aluminum wire, so that the aluminum wire is applied to the heat-conducting plastic, and the heat-radiating effect of the heat-conducting plastic is improved.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows: a preparation process of a heat-conducting plastic comprises the following steps:
s1: drawing a copper-clad aluminum wire material into a copper-clad aluminum wire with the diameter of 0.2 mm;
s2: performing bundle twisting treatment on 100 copper-clad aluminum wires by a bundle twisting machine;
s3: wrapping copper sheets with the thickness of 2mm outside the stranded copper-clad aluminum bundle or sleeving the copper sheets with the copper sheets, and performing secondary wire drawing, wherein the diameter of the aluminum wire is controlled to be 1 mu m after wire drawing, and the wrapped copper sheets can be directly wrapped by the copper sheets or can be plated with copper on the surfaces of the copper sheets;
s4: stripping the metal layer by electrolytic pickling, pickling with 20% strong acid at 30 ℃, controlling the current to be 20XA, adopting an aluminum bar as a positive electrode and a lead plate as a negative electrode, and stripping the metal layer to leave pure aluminum wires, wherein X is the number of aluminum wires in the electrolytic pickling tank, namely the current of one more aluminum wire is increased by 20A;
besides copper-clad wires, silver-plated aluminum wires, gold-plated aluminum wires, nickel-plated aluminum wires and the like can be adopted.
In this embodiment, in step S4, the strong acid is hydrochloric acid or sulfuric acid.
Example two: the difference from the first embodiment is that the method further comprises a step of extracting copper by using a copper extracting machine, the copper extracting machine is a specific structure of the existing equipment and is not described herein again, and the specific operation process is as follows: starting up: firstly closing a copper sulfate intermediate valve, then opening copper sulfate to carry out a liquid pump, starting a sulfuric acid liquid inlet pump after the liquid level in a copper extracting tank overflows, starting a power supply button to regulate the current again after an anode return pipe is filled with liquid and the liquid returns normally, gradually increasing the voltage after the voltage is stabilized from 1000A, and opening a copper sulfate discharge pump after the normal operation to enable the system to be put into automatic operation and stop: the system is automatically cancelled, the current is adjusted to zero, a power supply stop button is pressed, then a cathode (copper sulfate) liquid inlet pump and an anode (sulfuric acid) liquid inlet pump are respectively closed, and simultaneously a copper sulfate intermediate valve is opened to enable copper sulfate to flow back to the barrel; daily maintenance: discharging a little sulfuric acid every day, supplementing equal tap water at a height of about 15 cm, (ensuring that the concentration of the sulfuric acid is between 4 and 10 percent), paying attention to the copper precipitation condition on a cathode titanium plate, and stopping copper beating once continuous bubbles appear.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The processing method of the superfine aluminum wire is characterized by comprising the following steps:
s1: drawing an aluminum core wire, wherein the wire diameter is controlled to be 0.1-2mm, a metal layer is wrapped outside the aluminum core wire, and the metal activity of aluminum is greater than that of the metal layer;
s2: performing bundle twisting treatment on a plurality of metal aluminum core wires by using a bundle twisting machine;
s3: wrapping the same metal layer outside the stranded metal aluminum core wire harness or sleeving the same metal sleeve, and performing secondary wire drawing, wherein the thickness of the wrapped metal layer or the metal sleeve is 0.05-0.2 of the diameter of the metal aluminum core wire harness, and the diameter of the aluminum wire is controlled to be 0.5-1.5 mu m after wire drawing;
s4: stripping the metal layer by electrolytic pickling, pickling with 10-30% strong acid at 20-40 ℃, wherein the positive electrode adopts an aluminum bar, the negative electrode adopts a lead plate, the current is controlled to be 18XA-22XA, X is the number of aluminum wires in the electrolytic pickling tank, and pure aluminum wires are left after stripping the metal layer.
2. The method for processing the superfine aluminum wire according to claim 1, wherein the aluminum core wire is a copper-clad wire, and the stranded copper-clad aluminum wire is subjected to secondary wire drawing after being wrapped with a copper sheath or sleeved with a copper sleeve.
3. The method as claimed in claim 1, wherein in step S4, the strong acid is hydrochloric acid or sulfuric acid.
4. The method as claimed in claim 1, wherein the concentration of the strong acid is 20%.
5. The method as claimed in claim 1, wherein the current is controlled to be 20 XA.
6. The method as claimed in claim 1, wherein in step S3, the wire diameter of the drawn aluminum wire is controlled to 1 μm.
7. The method as claimed in claim 2, further comprising a step of extracting copper by using a copper extractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264345.3A CN111451312A (en) | 2020-04-07 | 2020-04-07 | Processing method of superfine aluminum wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264345.3A CN111451312A (en) | 2020-04-07 | 2020-04-07 | Processing method of superfine aluminum wire |
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| Publication Number | Publication Date |
|---|---|
| CN111451312A true CN111451312A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010264345.3A Pending CN111451312A (en) | 2020-04-07 | 2020-04-07 | Processing method of superfine aluminum wire |
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Citations (12)
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|---|---|---|---|---|
| US3540114A (en) * | 1967-11-21 | 1970-11-17 | Brunswick Corp | Method of forming fine filaments |
| EP1070558A2 (en) * | 1999-07-13 | 2001-01-24 | Bridgestone Corporation | Method of manufacturing titanium fiber or titanium alloy fiber |
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| CN101307518A (en) * | 2008-06-20 | 2008-11-19 | 湖南惠同新材料股份有限公司 | Metal fiber ply yarn and method for making same |
| CN100540715C (en) * | 2008-01-25 | 2009-09-16 | 湖南惠同新材料股份有限公司 | A kind of fire resistant iron chromium aluminum filament and preparation technology |
| CN101607367A (en) * | 2009-04-17 | 2009-12-23 | 河北小蜜蜂工具集团有限公司 | A kind of manufacture method of ultrafine metal fibers |
| CN102477577A (en) * | 2010-11-22 | 2012-05-30 | 湖南汇博金属材料有限责任公司 | Preparation process for metal fibers |
| CN103225153A (en) * | 2013-04-07 | 2013-07-31 | 湖南惠同新材料股份有限公司 | Preparation method of metal fiber strand |
| CN103233254A (en) * | 2013-04-11 | 2013-08-07 | 西安菲尔特金属过滤材料有限公司 | Preparation method of corrosion resistant alloy fiber |
| CN103774206A (en) * | 2013-12-27 | 2014-05-07 | 威瑞泰科技发展(宁波)有限公司 | Preparation process of metal fiber |
| CN105081000A (en) * | 2015-09-06 | 2015-11-25 | 成羽 | Metal fiber manufacturing method and device |
| CN108515086A (en) * | 2018-04-08 | 2018-09-11 | 江苏沃德赛模具科技有限公司 | A kind of manufacturing method of the continuous aluminum alloy fiber of micron order super-strength |
-
2020
- 2020-04-07 CN CN202010264345.3A patent/CN111451312A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3540114A (en) * | 1967-11-21 | 1970-11-17 | Brunswick Corp | Method of forming fine filaments |
| EP1070558A2 (en) * | 1999-07-13 | 2001-01-24 | Bridgestone Corporation | Method of manufacturing titanium fiber or titanium alloy fiber |
| CN1413267A (en) * | 1999-12-23 | 2003-04-23 | 帕尔过滤和分离集团公司 | Advanced alloy fiber and process of making |
| CN100540715C (en) * | 2008-01-25 | 2009-09-16 | 湖南惠同新材料股份有限公司 | A kind of fire resistant iron chromium aluminum filament and preparation technology |
| CN101307518A (en) * | 2008-06-20 | 2008-11-19 | 湖南惠同新材料股份有限公司 | Metal fiber ply yarn and method for making same |
| CN101607367A (en) * | 2009-04-17 | 2009-12-23 | 河北小蜜蜂工具集团有限公司 | A kind of manufacture method of ultrafine metal fibers |
| CN102477577A (en) * | 2010-11-22 | 2012-05-30 | 湖南汇博金属材料有限责任公司 | Preparation process for metal fibers |
| CN103225153A (en) * | 2013-04-07 | 2013-07-31 | 湖南惠同新材料股份有限公司 | Preparation method of metal fiber strand |
| CN103233254A (en) * | 2013-04-11 | 2013-08-07 | 西安菲尔特金属过滤材料有限公司 | Preparation method of corrosion resistant alloy fiber |
| CN103774206A (en) * | 2013-12-27 | 2014-05-07 | 威瑞泰科技发展(宁波)有限公司 | Preparation process of metal fiber |
| CN105081000A (en) * | 2015-09-06 | 2015-11-25 | 成羽 | Metal fiber manufacturing method and device |
| CN108515086A (en) * | 2018-04-08 | 2018-09-11 | 江苏沃德赛模具科技有限公司 | A kind of manufacturing method of the continuous aluminum alloy fiber of micron order super-strength |
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Application publication date: 20200728 |