CN114592161A - Preparation method of clad metal tungsten wire - Google Patents
Preparation method of clad metal tungsten wire Download PDFInfo
- Publication number
- CN114592161A CN114592161A CN202011415271.5A CN202011415271A CN114592161A CN 114592161 A CN114592161 A CN 114592161A CN 202011415271 A CN202011415271 A CN 202011415271A CN 114592161 A CN114592161 A CN 114592161A
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- China
- Prior art keywords
- tungsten wire
- clad
- crucible
- heating
- hydrogen atmosphere
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/08—Tin or alloys based thereon
Abstract
The invention discloses a preparation method of a clad metal tungsten wire, which comprises the following steps: (1) performing surface pretreatment on the tungsten wire to remove impurities on the surface of the tungsten wire to obtain a pretreated tungsten wire; (2) adding pure copper or pure tin to be clad into a crucible, and heating to a molten state in a hydrogen atmosphere; (3) and (3) passing the pretreated tungsten wire obtained in the step (1) through the material obtained in the step (2) at the speed of 3-35m/min, and then cooling to obtain the clad metal tungsten wire. According to the invention, pure copper or pure tin is coated on the surface of the conventional tungsten wire, so that the pure copper and the pure tin are firmly combined on the surface of the tungsten wire (the tungsten wire is not easy to fall off after being scraped for 3 times by using standard tweezers), and the binding force of the pure copper/the pure tin and the tungsten wire is improved.
Description
Technical Field
The invention belongs to the technical field of tungsten wire preparation, and particularly relates to a preparation method of a clad metal tungsten wire.
Background
The traditional drawing tungsten wire has certain strength, but the resistance is unstable, and the conductive capability is weak. Although the traditional metal wires of gold, silver, copper, zinc, aluminum, nickel, tin and the like and alloy wires thereof have better signal transmission capability, the traditional metal wires cannot be used in some special occasions due to lower strength. In addition, the graphite emulsion is used as a lubricant in the traditional tungsten wire drawing process, the graphite emulsion can start a better lubricating effect after being dried, the graphite emulsion is not suitable for high-speed drawing, the physical properties such as strength and the like cannot be rapidly improved, the efficiency and the cost can not be greatly improved, the field dust is low due to the use of the graphite emulsion processing field, the difficulty in developing field 5S work is brought, and the environment is not friendly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of a clad metal tungsten wire.
The technical scheme of the invention is as follows:
a preparation method of a clad metal tungsten wire comprises the following steps:
(1) performing surface pretreatment on the tungsten wire to remove impurities on the surface of the tungsten wire to obtain a pretreated tungsten wire;
(2) adding pure copper or pure tin to be clad into a crucible, and heating to a molten state in a hydrogen atmosphere;
(3) and (3) passing the pretreated tungsten wire obtained in the step (1) through the material obtained in the step (2) at the speed of 3-35m/min, and then cooling to obtain the clad metal tungsten wire.
In a preferred embodiment of the present invention, the step (2) is: adding pure copper to be clad into a crucible, and heating to 1150-1300 ℃ in a hydrogen atmosphere.
Further preferably, the step (2) is: adding pure copper to be clad into a crucible, and heating to 1200 ℃ in a hydrogen atmosphere.
In a preferred embodiment of the present invention, the step (2) is: adding pure tin to be clad into a crucible, and heating to 250-350 ℃ in a hydrogen atmosphere.
Further preferably, the step (2) is: adding pure tin to be clad into a crucible, and heating to 300 ℃ in a hydrogen atmosphere.
In a preferred embodiment of the present invention, the speed in said step (3) is 5 to 32 m/min.
Further preferably, the speed in the step (3) is 23 to 30 m/min.
In a preferred embodiment of the present invention, the pretreatment in the step (1) is hydrogen-burning reduction or electrolytic cleaning.
In a preferred embodiment of the present invention, the cooling method is air cooling or water cooling.
In a preferred embodiment of the invention, the thickness of the clad pure copper or pure tin on the clad tungsten wire is 0.5-3 μm. .
The invention has the beneficial effects that:
1. according to the invention, pure copper or pure tin is coated on the surface of the conventional tungsten wire, so that the pure copper and the pure tin are firmly combined on the surface of the tungsten wire (the tungsten wire is not easy to fall off after being scraped for 3 times by using standard tweezers), and the binding force of the pure copper/the pure tin and the tungsten wire is improved;
2. the composite metal tungsten wire has certain strength improvement and good conductivity and signal transmission capability.
3. The invention has better compatibility of high strength and good conductive capability, and simultaneously, the later-stage drawing can cancel the use of graphite emulsion, thereby realizing rapid drawing, improving the production efficiency and the strength of the wire material, and improving the production environment.
Drawings
FIG. 1 is an electron micrograph of a tungsten clad wire obtained in example 1 of the present invention.
FIG. 2 is a metallographic picture of a cross section of a tungsten clad wire obtained in example 1 of the present invention.
FIG. 3 is a metallographic image of a cross section of a tungsten clad wire produced in example 1 of the present invention after drawing.
FIG. 4 is an electron micrograph of a tungsten clad wire obtained in example 1 of the present invention after drawing.
FIG. 5 is a surface electron micrograph of a tungsten clad wire obtained in example 2 of the present invention.
FIG. 6 is a surface energy spectrum analysis chart of the clad metal tungsten wire obtained in example 2 of the present invention.
Detailed Description
The technical solution of the present invention will be further illustrated and described below with reference to the accompanying drawings by means of specific embodiments.
Example 1
(1) And (3) carrying out hydrogen burning reduction on the tungsten wire at 1050 ℃ at the speed of 10m/min to remove impurities on the surface of the tungsten wire, and improving the binding force of subsequent lamination to obtain the pretreated tungsten wire.
(2) Adding pure copper to be clad into a crucible, heating to 1200 ℃ in a hydrogen atmosphere, wherein if the temperature is lower than 1150 ℃, the fluidity of copper liquid is poor, the quality of the coated surface is not smooth, and if the temperature is higher than 1300 ℃, the tungsten wire is brittle.
(3) And (3) passing the pretreated tungsten wire obtained in the step (1) through the material obtained in the step (2) at the speed of 30m/min, and then performing air cooling or rapid cooling to obtain the clad metal tungsten wire (the thickness of a clad layer is 0.5-3 microns) with the strength of 3480Mpa and the resistivity of which is reduced by 5.2% compared with that of an uncoated tungsten wire of the same specification. As shown in figure 1, the surface quality and the component purity of the coating of the clad metal tungsten wire are better through electron microscope detection, and as shown in figure 2, the clad metal tungsten wire can see that the uniformity of a clad copper layer is good and the thickness is moderate through the metallographic detection of the cross section.
(4) As shown in FIG. 3, after the clad tungsten wire is drawn (speed 100m/min, 10% compression ratio), the metallographic examination of the cross section of the clad tungsten wire can see that the uniformity of the clad copper layer is good and the thickness is moderate, as shown in FIG. 4, after the clad tungsten wire is drawn by the step, the surface quality is good through the examination of an electron microscope, and no obvious defect is found.
Example 2
(1) And (3) carrying out electrolytic cleaning on the tungsten wire (15V voltage, 50m/min speed) to remove impurities on the surface of the tungsten wire, and improving the binding force of subsequent lamination to obtain the pretreated tungsten wire.
(2) Adding pure tin to be clad into a crucible, heating to 300 ℃ in a hydrogen atmosphere, wherein if the temperature is lower than 250 ℃, the fluidity of tin liquid is poor, the quality of the coated surface is not smooth, and if the temperature is higher than 350 ℃, the consumption of the tin liquid is serious.
(3) And (2) passing the pretreated tungsten wire obtained in the step (1) through the material obtained in the step (2) at a speed of 23m/min, and then performing air cooling or rapid cooling to obtain the clad metal tungsten wire (the thickness of the clad layer is 0.5-3 μm) with the strength of 3503MPa and the resistivity reduced by 4.8% compared with the copper specification uncoated tungsten wire, as shown in figure 5, the clad metal tungsten wire has better surface quality through electron microscope detection, and the surface energy spectrum analysis of the clad metal tungsten wire is as shown in figure 6.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A preparation method of a clad metal tungsten wire is characterized by comprising the following steps: the method comprises the following steps:
(1) performing surface pretreatment on the tungsten wire to remove impurities on the surface of the tungsten wire to obtain a pretreated tungsten wire;
(2) adding pure copper or pure tin to be clad into a crucible, and heating to a molten state in a hydrogen atmosphere;
(3) and (3) passing the pretreated tungsten wire obtained in the step (1) through the material obtained in the step (2) at the speed of 3-35m/min, and then cooling to obtain the clad metal tungsten wire.
2. The method of claim 1, wherein: the step (2) is as follows: adding pure copper to be clad into a crucible, and heating to 1150-1300 ℃ in a hydrogen atmosphere.
3. The method of claim 2, wherein: the step (2) is as follows: adding pure copper to be clad into a crucible, and heating to 1200 ℃ in a hydrogen atmosphere.
4. The method of claim 1, wherein: the step (2) is as follows: adding pure tin to be clad into a crucible, and heating to 250-350 ℃ in a hydrogen atmosphere.
5. The method of claim 4, wherein: the step (2) is as follows: adding pure tin to be clad into a crucible, and heating to 300 ℃ in a hydrogen atmosphere.
6. The method of claim 1, wherein: the speed in the step (3) is 5-32 m/min.
7. The method of claim 6, wherein: the speed in the step (3) is 23-30 m/min.
8. The production method according to any one of claims 1 to 7, characterized in that: the pretreatment in the step (1) is hydrogen burning reduction or electrolytic cleaning.
9. The production method according to any one of claims 1 to 7, characterized in that: the cooling method is air cooling or water cooling.
10. The production method according to any one of claims 1 to 7, characterized in that: the thickness of the laminated pure copper or pure tin on the laminated metal tungsten wire is 0.5-3 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011415271.5A CN114592161A (en) | 2020-12-03 | 2020-12-03 | Preparation method of clad metal tungsten wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011415271.5A CN114592161A (en) | 2020-12-03 | 2020-12-03 | Preparation method of clad metal tungsten wire |
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| CN114592161A true CN114592161A (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011415271.5A Pending CN114592161A (en) | 2020-12-03 | 2020-12-03 | Preparation method of clad metal tungsten wire |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1457615A (en) * | 1965-09-22 | 1966-01-24 | Colorado Fuel & Iron Corp | Method of coating a metal wire |
| GB1105708A (en) * | 1965-09-06 | 1968-03-13 | C F & I Steel Corp | Method of coating metal strand |
| CN1418259A (en) * | 2000-03-17 | 2003-05-14 | 新日本制铁株式会社 | Plated metal wire and production method and production device therefor |
| JP2005105326A (en) * | 2003-09-29 | 2005-04-21 | Fujikura Ltd | Method and apparatus for manufacturing coated metal wire |
| CN102061431A (en) * | 2010-12-17 | 2011-05-18 | 上海工程技术大学 | Tungsten-copper composite material and preparation method thereof |
| CN109518110A (en) * | 2018-11-30 | 2019-03-26 | 烟台元泰金属材料技术有限公司 | A kind of braiding space-vehicle antenna net ultra-fine dilute/noble metal composite filament and preparation method thereof |
-
2020
- 2020-12-03 CN CN202011415271.5A patent/CN114592161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1105708A (en) * | 1965-09-06 | 1968-03-13 | C F & I Steel Corp | Method of coating metal strand |
| FR1457615A (en) * | 1965-09-22 | 1966-01-24 | Colorado Fuel & Iron Corp | Method of coating a metal wire |
| CN1418259A (en) * | 2000-03-17 | 2003-05-14 | 新日本制铁株式会社 | Plated metal wire and production method and production device therefor |
| JP2005105326A (en) * | 2003-09-29 | 2005-04-21 | Fujikura Ltd | Method and apparatus for manufacturing coated metal wire |
| CN102061431A (en) * | 2010-12-17 | 2011-05-18 | 上海工程技术大学 | Tungsten-copper composite material and preparation method thereof |
| CN109518110A (en) * | 2018-11-30 | 2019-03-26 | 烟台元泰金属材料技术有限公司 | A kind of braiding space-vehicle antenna net ultra-fine dilute/noble metal composite filament and preparation method thereof |
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