CN104818443A - Short-process efficient production method of copper-sliver alloy wire - Google Patents
Short-process efficient production method of copper-sliver alloy wire Download PDFInfo
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- CN104818443A CN104818443A CN201510159108.XA CN201510159108A CN104818443A CN 104818443 A CN104818443 A CN 104818443A CN 201510159108 A CN201510159108 A CN 201510159108A CN 104818443 A CN104818443 A CN 104818443A
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Abstract
The invention relates to a short-process efficient production method of a copper-sliver alloy wire, and belongs to the technical field of metal material preparation. The production method is characterized in that a warm type continuous casting method is used to prepare a copper-sliver alloy wire billet with a columnar crystal structure having the high orientation degree along a length direction and a diameter of 1-30 mm, wherein the billet drawing speed of the warm type continuous casting is 1-600 mm/min; and at a room temperature or 20-50 DEG C below the wire billet re-crystallization temperature, the wire billet is subjected to rolling or rough drawing, and then fine drawing is performed to obtain the wire with a diameter of 10-50 [mu]m. The production method of the present invention has the following advantages that: the warm type continuous casting method is used to prepare the copper-sliver alloy wire billet having the columnar crystal structure having the high axial orientation degree, the cold processing extending deformation capability is excellent, the pull-off is not easily generated during the wire drawing process, the intermediate annealing step even can be eliminated, the process is short, the material utilization rate is high, the energy source is saved, the production efficiency is high, the cost is low, and the wire quality and the wire performance are excellent.
Description
Technical field
The invention belongs to technical field of metal material preparation, be specifically related to a kind of short flow high efficiency production method of Kufil wire rod, especially a kind of short process making method of fine Kufil wire rod.
Technical background
Kufil is the copper base binary alloy of argentiferous (mass percentage of general silver is 0.02% ~ 30%), there is good conductivity, the excellent properties such as high intensity and high softening temperature, it is power electronics, aerospace, traffic machinery, the Metallic Functional Materials that the field such as defence and military and daily life purposes is wide, its wire fabrication is widely used as large high-speed turbine generator rotator wire, bullet train osculatory, sophisticated digital communication equipment signal transmission line, high-fidelity wire, super-high magnetic field water-cooling lead, micromotor coil winding etc., the market requirement is larger.
The main production of current Kufil wire rod comprises continuous casting and rolling method, upward-casting process and continuous extrausion process etc.Continuous casting and rolling method is drawn or horizontal cold mould continuous casting technology production of copper silver alloy wire base under adopting, and then carries out remaining warm tandem rolling or cold continuous rolling shaping Kufil wire rod; The Kufil wire rod oxygen level adopting continuous casting and rolling method to produce is high, homogeneity of ingredients is poor, on crystal boundary, easily form the Red copper oxide of fragility, cause that Kufil wire rod bend resistance performance is bad, anti-fatigue performance is poor, the plastic deformation abilities such as follow-up drawing are bad, be difficult to obtain high-quality precision copper silver alloys wire rod, and continuous casting continuous rolling equipment is huge, investment large.Upward-casting process draws cold mould continuous casting technology on adopting and prepares Kufil gold thread base, the continuous drawing shaping Kufil wire rod of the cold rolling and multi-pass of follow-up multi-pass; Easily there is the defects such as the loose and surface crack of internal residual stress, component segregation, coarse grains, cast structure in the Kufil wire rod adopting upward-casting process to produce, cause and use interrupt line accident to happen occasionally, and the processing parameter of continuous up-casting is difficult to stability contorting, easy appearance fluctuation, cause unstable product quality, cause Kufil wire strength low, planeness, wear resistance and creep resisting ability are poor, and quality and performance is difficult to meet high standard service requirements etc.Continuous extrausion process draws cold mould continuous casting technology on adopting to prepare Kufil gold thread base, follow-up continuous extrausion process shaping Kufil wire rod; The Kufil wire surface adopting continuous extrausion process to produce easily produces the bubble not easily eliminated, draw cold mould continuous casting copper silver alloy wire base on using and contain bubble and inclusion causes easily brittle failure occurring in continuously extruded process, and the die life of continuously extruded employing is low, consumption is large, and production cost is high.
As from the foregoing, current Kufil gold thread base all adopts cold mould continuous casting technology to prepare, because the mold temperature of cold mould continuous casting is far below the solidus temperature of alloy, for cooling casting mold, the solidified structure obtained from casting billet surface toward core is respectively tiny equiax crystal, perpendicular to the column crystal on surface and the strand of thick equiax crystal, easily there is segregation in strand inside, loose, the defects such as shrinkage cavity, plastic deformation ability is generally bad, cc billet surface quality is poor, need as deformation after unloading is last to increase the operations such as milling face, not only increase energy consumption and investment goods, improve production cost, the quality of wire rod formed thereby and less stable, reduce material use efficiency, yield rate and productivity.Particularly, Kufil generally all has wider solid-liquid two-phase region (temperature head between the solidus curve of part copper silver alloys and liquidus line can reach more than 200 DEG C), usually causes adopting cold mould continuous casting technology to be difficult to prepare high-quality Kufil gold thread base.
The warm type continuous cast method that present inventor etc. propose [is shown in: Liu Xuefeng, Deng. a kind of warm type castmethod. Chinese invention patent, application number 201310140939.3, applying date 2013-04-22] be a kind of metal high efficiency continuous casting new preparation technology recently developed, its principle is by controlling in the low heating temperature region of metal the mold temperature of continuous casting (namely by heating casting mold, make mold temperature remain on solidus temperature lower than metal and in scope higher than cooling mold temperature), form low-heat casting mold, and near casting mold outlet, pressure is carried out to frozen metal and cool, metal is completed before leaving casting mold outlet solidify, realize continuous casting to be shaped.The method can realize the short flow high efficiency continuous casting of metal wire base under high-temperature gradient, less energy-consumption condition, metal wire base excellent surface quality (defect such as good, flawless of smooth finish), dense internal organization (without loose, shrinkage cavity etc.), can not carry out milling face and directly carry out cold machine-shaping; Metal wire base has the high columanar structure of axial orientation degree, is extremely conducive to the axial extensional of follow-up cold working (as rolling, drawing), and is conducive to improving the performances such as conduction, intensity, anti-corrosion and resistance to bending; Metal wire base uniform composition, the consistence of quality product and good stability.
Therefore, warm type continuous cast method is the short route of Kufil wire rod, efficient preparation provides brand-new approach, based on this patent of invention, can develop the short flow high efficiency production method of Kufil wire rod.
Summary of the invention
The technical process that the object of the invention is for the existing production method of Kufil wire rod is long, energy consumption is high, lumber recovery is low, production cost is high, and the quality and performance of product is difficult to meet the problems such as service requirements, is High-efficient Production high-quality Kufil wire rod, improve lumber recovery, reduce production cost, improve the quality of products and performance, provide a kind of and use warm type continuous cast method and in conjunction with the Kufil wire rod short flow high efficiency production method of specific formed machining technique and annealing process.
A short flow high efficiency production method for Kufil wire rod, concrete technology is as follows:
Warm type continuous cast method is adopted to prepare the Kufil gold thread base with the high columanar structure of orientation degree along its length, diameter 1 ~ 30mm, the casting speed of warm type continuous casting is 1 ~ 600mm/min, warm type continuous cast method can be drop-down warm type continuous metal cast process, arc warm type continuous metal cast process, horizontal warm type continuous metal cast process or on draw any one in warm type continuous metal cast process; For the line base of diameter 15 ~ 30mm, be rolled under room temperature or the temperature lower than line base recrystallization temperature 20 ~ 50 DEG C, rolling pass is 1 ~ 12, obtain the Kufil wire rod of diameter 8 ~ 15mm, then the method for drawing is adopted, rough at room temperature through 7 ~ 12 passages, then finish draw is the wire rod of 10 ~ 50 μm to diameter; For the line base of diameter 1 ~ 15mm, directly adopt the method for drawing, rough at room temperature through 7 ~ 12 passages, then finish draw is the wire rod of 10 ~ 50 μm to diameter; Can apply the process annealing of 1 ~ 2 time as required in rough and finish draw process, its annealing temperature is lower than recrystallization temperature 20 ~ 50 DEG C, the annealing time 1 ~ 3h of wire rod.
The invention has the advantages that:
1, the Kufil adopting warm type continuous cast method to produce is as line base, because this line base surface quality is high, dense internal organization, do not need to carry out milling face and directly can carry out follow-up plastic working (rolling and drawing), improve material use efficiency, decrease operation, improve lumber recovery, reduce production cost.
2, its subsequent machining technology of production method provided by the present invention is compared with traditional copper silver alloys wire rod production method, is conducive to significantly improving production efficiency, obtains high performance wire rod.It is flourishing radial columanar structure that tradition produces based on cold mould continuous cast method the Kufil gold thread base adopted, this kind of line base due to plastic deformation ability poor, in unannealed situation, can carry out cold worked deflection continuously less, and therefore production efficiency is lower; And line base of the present invention has the high columanar structure of axial orientation degree, extend axially in processing (rolling and drawing) process, good plastic working ability and without the need to process annealing process can be kept, therefore production efficiency is high, and is conducive to improving the performances such as the conduction of wire rod, intensity, anti-corrosion and resistance to bending.
3, production method provided by the present invention is compared with traditional cold mould continuous cast method production of copper silver alloys wire rod, and annealing times significantly reduces, and annealing temperature also significantly reduces, even without the need to process annealing, therefore not only advantageously in save energy, shorten flow process, and be conducive to enhancing productivity.
Embodiment
Below in conjunction with embodiment, the present invention is specifically described; what be necessary to herein means out is that the present embodiment is only used to further illustrate the present invention; limiting the scope of the invention can not be interpreted as; every any nonessential improvement of doing following examples according to the technology of the present invention essence and adjustment, all still belong in the protection domain of technical solution of the present invention.
Embodiment 1:
Drop-down warm type continuous cast method is adopted to prepare the 2-in-1 gold thread base of copper silver, under the condition of the melt temperature 1200 DEG C of drop-down warm type continuous casting, low-heat mold temperature 700 DEG C, cooling water flow 600L/h, casting speed 200mm/min, prepare the 2-in-1 gold thread base of copper silver with the high columanar structure of orientation degree along its length, diameter 10mm; Adopt the method for drawing, rough at room temperature through 12 passages, obtain the 2-in-1 gold thread material of copper silver of diameter 1.3mm; Apply 1 process annealing, annealing process is 200 DEG C × 180min; Finish draw is the 2-in-1 gold thread material of copper silver of 40 μm to diameter again.
Embodiment 2:
Drop-down warm type continuous cast method is adopted to prepare the 2-in-1 gold thread base of copper silver, under the condition of the melt temperature 1250 DEG C of drop-down warm type continuous casting, low-heat mold temperature 800 DEG C, cooling water flow 400L/h, casting speed 100mm/min, prepare the 2-in-1 gold thread base of copper silver with the high columanar structure of orientation degree along its length, diameter 10mm; Adopt the method for drawing, rough at room temperature through 8 passages, obtain the 2-in-1 gold thread material of copper silver of diameter 2.6mm; Apply 1 process annealing, annealing process is 250 DEG C × 120min; Finish draw is the 2-in-1 gold thread material of copper silver of 30 μm to diameter again.
Embodiment 3:
Drop-down warm type continuous cast method is adopted to prepare the 2-in-1 gold thread base of copper silver, under the condition of the melt temperature 1150 DEG C of drop-down warm type continuous casting, low-heat mold temperature 900 DEG C, cooling water flow 500L/h, casting speed 150mm/min, prepare the 2-in-1 gold thread base of copper silver with the high columanar structure of orientation degree along its length, diameter 10mm; Adopt the method for drawing, rough at room temperature through 10 passages, obtain the 2-in-1 gold thread material of copper silver of diameter 1.8mm; Apply 1 process annealing, annealing process is 220 DEG C × 150min; Finish draw is the 2-in-1 gold thread material of copper silver of 50 μm to diameter again.
Claims (3)
1. the short flow high efficiency production method of a Kufil wire rod, it is characterized in that, adopt warm type continuous cast method to prepare the Kufil gold thread base with the high columanar structure of orientation degree along its length, diameter 1 ~ 30mm, the casting speed of warm type continuous casting is 1 ~ 600mm/min; For the line base of diameter 15 ~ 30mm, be rolled under room temperature or the temperature lower than line base recrystallization temperature 20 ~ 50 DEG C, rolling pass is 1 ~ 12, obtain the Kufil wire rod of diameter 8 ~ 15mm, then the method for drawing is adopted, rough at room temperature through 7 ~ 12 passages, then finish draw is the wire rod of 10 ~ 50 μm to diameter; For the line base of diameter 1 ~ 15mm, directly adopt the method for drawing, rough at room temperature through 7 ~ 12 passages, then finish draw is the wire rod of 10 ~ 50 μm to diameter.
2. the short flow high efficiency production method of a kind of Kufil wire rod as claimed in claim 1, it is characterized in that, described warm type continuous cast method is drop-down warm type continuous metal cast process, arc warm type continuous metal cast process, horizontal warm type continuous metal cast process or on draw any one in warm type continuous metal cast process.
3. the short flow high efficiency production method of a kind of Kufil wire rod as claimed in claim 1, it is characterized in that, in described rough and described finish draw process, apply the process annealing of 1 ~ 2 time, its annealing temperature is lower than recrystallization temperature 20 ~ 50 DEG C, the annealing time 1 ~ 3h of Kufil wire rod.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195550A (en) * | 2015-10-14 | 2015-12-30 | 北京科技大学 | Short-flow processing method for metal bar |
| CN105598400A (en) * | 2016-01-08 | 2016-05-25 | 长沙理工大学 | Short-process high-tin bronze wire material forming technology |
| CN105895186A (en) * | 2016-04-14 | 2016-08-24 | 王文芳 | Copper alloy thin wire single filament, copper alloy thin wire, production method thereof, and device |
| CN106180649A (en) * | 2016-08-10 | 2016-12-07 | 广东省材料与加工研究所 | A kind of preparation method of copper-clad long carbon fiber composite conductor wire rod |
| CN109763153A (en) * | 2019-02-25 | 2019-05-17 | 常州安澜电气有限公司 | A kind of solar battery grid material and its manufacturing process |
| CN113333708A (en) * | 2021-05-27 | 2021-09-03 | 宁波金田铜业(集团)股份有限公司 | Control method for generating axial columnar crystal by copper and copper alloy and obtained copper and copper alloy |
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| CN1398688A (en) * | 2002-04-12 | 2003-02-26 | 北京科技大学 | Prepn process of superfine oxygen-free copper wire |
| JP2013033957A (en) * | 2010-08-30 | 2013-02-14 | Furukawa Electric Co Ltd:The | Lead wire for solar cell, and method of manufacturing the same |
| CN103170588A (en) * | 2013-04-22 | 2013-06-26 | 北京科技大学 | Thermal mold casting method |
| CN103484710A (en) * | 2012-09-05 | 2014-01-01 | 阮伟光 | Bismuth brass alloy drawn bar containing trace rare earth and manufacture method thereof |
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2015
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Patent Citations (4)
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| CN1398688A (en) * | 2002-04-12 | 2003-02-26 | 北京科技大学 | Prepn process of superfine oxygen-free copper wire |
| JP2013033957A (en) * | 2010-08-30 | 2013-02-14 | Furukawa Electric Co Ltd:The | Lead wire for solar cell, and method of manufacturing the same |
| CN103484710A (en) * | 2012-09-05 | 2014-01-01 | 阮伟光 | Bismuth brass alloy drawn bar containing trace rare earth and manufacture method thereof |
| CN103170588A (en) * | 2013-04-22 | 2013-06-26 | 北京科技大学 | Thermal mold casting method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105195550A (en) * | 2015-10-14 | 2015-12-30 | 北京科技大学 | Short-flow processing method for metal bar |
| CN105598400A (en) * | 2016-01-08 | 2016-05-25 | 长沙理工大学 | Short-process high-tin bronze wire material forming technology |
| CN105895186A (en) * | 2016-04-14 | 2016-08-24 | 王文芳 | Copper alloy thin wire single filament, copper alloy thin wire, production method thereof, and device |
| CN105895186B (en) * | 2016-04-14 | 2017-11-21 | 王文芳 | One Albatra metal fine rule monofilament, copper alloy fine rule and preparation method thereof and device |
| CN106180649A (en) * | 2016-08-10 | 2016-12-07 | 广东省材料与加工研究所 | A kind of preparation method of copper-clad long carbon fiber composite conductor wire rod |
| CN109763153A (en) * | 2019-02-25 | 2019-05-17 | 常州安澜电气有限公司 | A kind of solar battery grid material and its manufacturing process |
| CN109763153B (en) * | 2019-02-25 | 2021-01-22 | 常州安澜电气有限公司 | Solar cell grid electrode material and manufacturing process thereof |
| CN113333708A (en) * | 2021-05-27 | 2021-09-03 | 宁波金田铜业(集团)股份有限公司 | Control method for generating axial columnar crystal by copper and copper alloy and obtained copper and copper alloy |
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