CN103646726A - Aluminum wire drawing stranding production technology - Google Patents
Aluminum wire drawing stranding production technology Download PDFInfo
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- CN103646726A CN103646726A CN201310675731.1A CN201310675731A CN103646726A CN 103646726 A CN103646726 A CN 103646726A CN 201310675731 A CN201310675731 A CN 201310675731A CN 103646726 A CN103646726 A CN 103646726A
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Abstract
The invention discloses an aluminum wire drawing stranding production technology. In the technology, an aluminum rod and a mold are preheated, then the aluminum rod is stretched to an aluminum wire through a heat extrusion machine, the aluminum wire is cooled with water and then blown dry, then the surface layer of the aluminum wire is smeared with a layer of anti-oxidization oil liquid through an oil groove and an oil filter, and finally the operation of aluminum wire stranding is finished through jog operation. The production technology can effectively avoid problems of affected lead stranding effects caused by blackened aluminum wire and damaged appearance due to a tempering technology.
Description
Technical field
The present invention relates to carbon fiber field, relate in particular to a kind of production technology of carbon fiber cable.
Background technology
It is external that carbon-fibre wire results from the nineties in last century, begins one's study and replace steel core with carbon fiber core, developed a kind of advanced composite material (ACM) synthetic core wire, i.e. carbon fiber core aluminium stranded wire.This wire is compared with common steel reinforced aluminium conductor, there is identical external diameter and intensity, in Poling Construction, do not need special facility and method, the steel core of ordinary steel core aluminum stranded wire is replaced by the carbon fiber core with composite material, this be a kind of lightweight, coefficient of linear expansion is little, have the epoch-making novel conductive wire of good sag characteristic.Such carbon fiber complex core material wire has several large features:
Intensity is large, more than the tensile strength of composite material can reach 2400MPa, general steel wire only limit to 1240MPa, high-tensile steel wires can reach 1410MPa, the Fracture Force of the wire that composite material is made increases by 90% than traditional steel reinforced aluminium conductor, also larger than the tensile strength of extra high strength steel wire.
Conductance is high, and the aluminum steel of carbon fiber complex core adopts the soft aluminium of tempering, and Conductivity Ratio conventional wires improves 2%, reduces resistivity, thereby reaches the object of line loss.
Line coefficient of expansion is little, and the line coefficient of expansion of carbon fiber complex core material is about 0.6 * 10
-6/ ℃.
Sag is little, and in peak times of power consumption, the sag of carbon fiber composite core wire is that the 9.6%(data of ordinary steel core aluminum stranded wire are shown in Fig. 1).Within 2004, U.S. CTC company entrusts famous Kinectrics laboratory, North America to the U.S. ACCC carbon fiber composite core wire with same diameter of its exploitation and ACSR wire sag contrast test, test lead span is 65.5 meters, and wire initial tension is the 25%RTS of wire separately.Result of the test shows, under identical experimental condition, temperature during from 26.1 ℃ to 183 ℃ the sag of ordinary steel core aluminum stranded wire from 236mm, be increased to 1422mm and improved 5 times; And being only increased to 312mm from 198mm, carbon fiber composite core wire improved 0.57 times.The sag variable quantity of carbon fiber composite core wire is only 9.6% of ordinary steel core aluminum stranded wire.
Ampacity is large, the magnetic loss and the thermal effect that do not exist wire material to cause due to composite material, and carrying under same electrical loading condiction, there is lower operating temperature, can reduce transmission loss, the aluminium sectional area of carbon fiber complex core is 1.29 times of ordinary steel core aluminum stranded wire in addition, and ampacity can improve 29%, in the low sag characteristic adding under the hot conditions that reaches 140 ℃, comprehensive ampacity can double.
Lightweight, the proportion of composite material is about 1/4th of steel, take DRAKE wire as example, the ordinary steel core aluminum stranded wire unit weight of this specification is about 1.623kg/m, and (wherein aluminum is partly 1.113kg/m, steel core is partly 0.51kg/m), DRAKE wire unit weight is about 75% of ordinary steel core aluminum stranded wire, and wire weight has alleviated 25%.The carbon fiber composite core wire for DRAKE wire gauge with same diameter (28.14 millimeters), composite core only needs 0.129kg/m, therefore the corresponding wire unit length of unit aluminium sectional area is about 70% of ordinary steel core aluminum stranded wire, has shown the advantage of carbon fiber composite core wire.Calculating shows, due to alleviating that wire is conducted oneself with dignity, can make conductor load reduce approximately 25%, so bearing capacity also can increase approximately 20%.Wire weight alleviates and good low sag characteristic, can make steel tower height reduce, and can make more its compactness of iron tower structure simultaneously, shortens the construction period, can save circuit comprehensive cost.Especially serious in short supply and increase due to economic development supply load density in the situation that in soil, Deposits in Eastern Coastal China province, on original pole and tower foundation, only need restringing and the power supply capacity that can double, not only save resource but also do not needed to increase line channel, saved soil.
Carbon fiber is universal in the application of cable industry as core, but when producing carbon-fibre wire at present, wire drawing, tempering process will cause aluminium wire blackening, and the problems such as appearance damage have a strong impact on the outward appearance of aluminium wire, and the inhomogeneities of being heated, controls trouble.Also some enterprise adopts the phenomenons such as hot squeezer carries out wire drawing, and the not moulding of shredded dried bean curd still pulling out, has some setbacks, and has caused aluminium wire to occur burr, inhomogeneous.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the stranded production technology of a kind of aluminium wire wire drawing, can effectively avoid the aluminium wire blackening that causes because of tempering process, the problem of appearance damage.
Technical scheme: for achieving the above object, technical scheme of the present invention is as follows:
Step 1: according to the specification of wire, select dimension wire-drawing die and aluminium bar;
Step 2: put wire-drawing die and aluminium bar into electric furnace and be heated to, between 300 ℃-400 ℃, keep 1 hour;
Step 3: open hot squeezer, by hot squeezer and wire-drawing die, aluminium bar is carried out to wire drawing processing, the gentle outer circulation coolant water temperature of interior recirculated cooling water of controlling wire-drawing die is less than 30 ℃, makes the aluminium wire produced cooling in time;
Step 4: after aluminium wire is first carried out to the preliminary filtration of moisture by tank rubber and hair dryer, then aluminium wire is oiled and oil strain by oil groove and oil-filtering apparatus on aluminium wire surface;
Step 5: the aluminium wire of surperficial strained oil is arranged on special-purpose capstan winch, aluminium wire is connected on capstan winch pressing mold by capstan winch threading wheel;
Step 6: adjust capstan winch threading and take turns to the aluminium wire distance on capstan winch pressing mold, and the inlet wire after 360 ° that makes just in time to overturn between capstan winch threading wheel and capstan winch pressing mold, make it to proceed to normal twisted wire track;
Step 7: start twisted wire, operate by crawl, measure pitch diameter distance, diameter and the lay ratio of adjusting every layer of twisted wire, until capstan winch pressing mold proceeds to normal twisted wire speed, complete twisted wire.
Further, the capstan winch threading in step 6 takes turns to pressing mold aluminium wire internal layer distance for 34cm, and middle level distance is 36.5cm, and outer distance is 41.5cm.
Further, in step 7, the internal layer pitch diameter of every layer of twisted wire is apart from 255cm, and middle level pitch diameter is apart from 315cm, and outer pitch diameter is apart from 355cm, internal layer diameter 16.6cm after twisted wire, middle level diameter 23.2cm, outer diameter 30.1cm, internal layer lay ratio 15 after twisted wire, middle level lay ratio 13, outer lay ratio 11.7.
Further, described oil-filtering apparatus comprises train wheel bridge, lower plate, upper strata felt flannelette, lower floor's felt flannelette and gatherer, in the middle of described lower plate, be provided with recessed infundibulate cavity volume, the concave point place of described cavity volume has aperture, between described train wheel bridge and lower plate, be provided with upper strata felt flannelette and lower floor's felt flannelette, below described lower plate, be provided with gatherer, be stained with oily aluminium wire through the gap between upper strata felt flannelette and lower floor's felt flannelette.
Beneficial effect: use hot extrude technology of the present invention can effectively be avoided the aluminium wire blackening causing because of tempering process, the problems such as appearance damage, and whole technical process one-shot forming, reduced energy consumption.On hot squeezer after wire drawing, increased oil groove and considered oily device and carry out oiling process processing to aluminium wire surface, solved not because aluminium wire surface moisture content is not removed clean, and the problem being oxidized in the generation of aluminium wire surface, do not affect the good result of wire stranding, and after oiling, by oil-filtering apparatus, remove the unnecessary oil in aluminium wire surface, make aluminium wire surface form one deck oil sheet.
Accompanying drawing explanation
Accompanying drawing 1 is production technology block diagram of the present invention.
Accompanying drawing 2 is the structural representation of oil-filtering apparatus in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, step 1: according to the specification of wire, select dimension wire-drawing die and aluminium bar, select the aluminium bar of A6 model 15mm diameter in the present invention;
Step 2: put wire-drawing die and aluminium bar into electric furnace and be heated to, between 300 ℃-400 ℃, keep 1 hour;
Step 3: open hot squeezer, by hot squeezer and wire-drawing die, aluminium bar is carried out to wire drawing processing, the gentle outer circulation coolant water temperature of interior recirculated cooling water of controlling wire-drawing die is less than 30 ℃, makes the aluminium wire produced cooling in time;
Step 4: after aluminium wire is first carried out to the preliminary filtration of moisture by tank rubber and hair dryer, then aluminium wire is oiled by oil groove and oil-filtering apparatus on aluminium wire surface;
Step 5: the aluminium wire of surperficial strained oil is arranged on special-purpose capstan winch, aluminium wire is connected on capstan winch pressing mold by capstan winch threading wheel;
Step 6: adjust capstan winch threading and take turns to the aluminium wire distance on capstan winch pressing mold, wherein, it is 34cm apart from internal layer distance that adjustment capstan winch threading takes turns to pressing mold aluminium wire, middle level distance is 36.5cm, outer distance is 41.5cm, and make inlet wire after 360 ° of capstan winch threading wheel and the upsets of capstan winch pressing mold, make it to proceed to normal twisted wire track;
Step 7: start twisted wire, operate by crawl, measure pitch diameter distance, diameter and the lay ratio of adjusting every layer of twisted wire, the internal layer pitch diameter of preferred every layer of twisted wire is apart from 255cm, middle level pitch diameter is apart from 315cm, and outer pitch diameter is apart from 355cm, internal layer diameter 16.6cm, middle level diameter 23.2cm, outer diameter 30.1cm, internal layer lay ratio 15, middle level lay ratio 13, outer lay ratio 11.7, until capstan winch pinch roller proceeds to normal twisted wire speed, completes twisted wire.
In the present invention, aluminium wire is oiled by oil groove, then by oil-filtering apparatus by the unnecessary oil content elimination in aluminium wire surface, make aluminium wire top layer form one deck oil sheet.As accompanying drawing 2, described oil-filtering apparatus comprises train wheel bridge 3, lower plate 8, upper strata felt flannelette 4, lower floor's felt flannelette 5 and gatherer 7, in the middle of described lower plate 8, be provided with recessed infundibulate cavity volume, the concave point place of described cavity volume has aperture, between described train wheel bridge 3 and lower plate 8, be provided with upper strata felt flannelette 4 and lower floor's felt flannelette 5, aluminium wire 6 is through after oil groove, again through the unnecessary oil mass of gap elimination between upper strata felt flannelette 4 and lower floor's felt flannelette 5, make aluminium wire top layer form one deck oil sheet, described lower plate 8 is provided with gatherer 7 below.Described train wheel bridge 3 and lower plate 8 are installed by four groups of adjusting bolts.Described four groups of adjusting bolts 2 can be rotated adjusting up and down, adjust the distance between train wheel bridge 3 and lower plate 8, control the pressure of upper strata felt flannelette 4 and 5 pairs of aluminium wires 6 of lower floor's felt flannelette, thereby adjust the oil content on aluminium wire 6 top layers.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. the stranded production technology of aluminium wire wire drawing, is characterized in that, comprises following concrete steps:
Step 1: according to the specification of wire, select dimension wire-drawing die and aluminium bar;
Step 2: put wire-drawing die and aluminium bar into electric furnace and be heated to, between 300 ℃-400 ℃, keep 1 hour;
Step 3: open hot squeezer, by hot squeezer and wire-drawing die, aluminium bar is carried out to wire drawing processing, the gentle outer circulation coolant water temperature of interior recirculated cooling water of controlling wire-drawing die is less than 30 ℃, makes the aluminium wire produced cooling in time;
Step 4: after aluminium wire is first carried out to the preliminary filtration of moisture by tank rubber and hair dryer, then aluminium wire is oiled and oil strain by oil groove and oil-filtering apparatus on aluminium wire surface;
Step 5: the aluminium wire of surperficial strained oil is arranged on special-purpose capstan winch, aluminium wire is connected on capstan winch pressing mold by capstan winch threading wheel;
Step 6: adjust capstan winch threading and take turns to the aluminium wire distance on capstan winch pressing mold, and the inlet wire after 360 ° that makes just in time to overturn between capstan winch threading wheel and capstan winch pressing mold, make it to proceed to normal twisted wire track;
Step 7: start twisted wire, operate by crawl, measure pitch diameter distance, diameter and the lay ratio of adjusting every layer of twisted wire, until capstan winch pressing mold proceeds to normal twisted wire speed, complete twisted wire.
2. the stranded production technology of a kind of aluminium wire wire drawing according to claim 1, is characterized in that: the aluminium wire internal layer distance that the capstan winch threading in step 6 takes turns on pressing mold is 34cm, and middle level distance is 36.5cm, and outer distance is 41.5cm.
3. the stranded production technology of a kind of aluminium wire wire drawing according to claim 1, it is characterized in that: in step 7, the internal layer pitch diameter of every layer of twisted wire is apart from 255cm, middle level pitch diameter is apart from 315cm, outer pitch diameter is apart from 355cm, the internal layer diameter 16.6cm after twisted wire, middle level diameter 23.2cm, outer diameter 30.1cm, internal layer lay ratio 15 after twisted wire, middle level lay ratio 13, outer lay ratio 11.7.
4. the stranded production technology of a kind of aluminium wire wire drawing according to claim 1, it is characterized in that: described oil-filtering apparatus comprises train wheel bridge (3), lower plate (8), upper strata felt flannelette (4), lower floor's felt flannelette (5) and gatherer (7), in the middle of described lower plate (8), be provided with recessed infundibulate cavity volume, the concave point place of described cavity volume has aperture, between described train wheel bridge (3) and lower plate (8), be provided with upper strata felt flannelette (4) and lower floor's felt flannelette (5), described lower plate (8) is provided with gatherer 7 below, be stained with oily aluminium wire through the gap between upper strata felt flannelette (4) and lower floor's felt flannelette (5).
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| CN201310675731.1A CN103646726B (en) | 2013-12-11 | 2013-12-11 | The production technology that a kind of aluminium wire wire drawing is stranded |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332255A (en) * | 2014-11-03 | 2015-02-04 | 广州番禺电缆集团有限公司 | Oil immersing device for production of low-smoke halogen-free cables and method for producing low-smoke halogen-free cables |
| CN106448944A (en) * | 2016-12-01 | 2017-02-22 | 江苏省威能达电线电缆有限公司 | Production process for drawing and twisting aluminum wire |
| CN106448945A (en) * | 2016-12-01 | 2017-02-22 | 江苏省威能达电线电缆有限公司 | Preparation method of outer aluminum mold line of compound aluminum conductor with soft core |
| CN107812794A (en) * | 2017-09-26 | 2018-03-20 | 唐山市丰南区宝忠热机元件厂 | LED radiating line and its production method |
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| US20050279074A1 (en) * | 2004-06-17 | 2005-12-22 | Johnson Douglas E | Cable and method of making the same |
| JP3918132B1 (en) * | 2006-03-24 | 2007-05-23 | 株式会社アスク | Drawing machine and drawing method |
| CN101254513A (en) * | 2008-03-20 | 2008-09-03 | 戴兴无 | Leadless alloy thread preparation |
| CN103143858A (en) * | 2013-02-25 | 2013-06-12 | 宁波市雪银铝业有限公司 | Aluminum welding wire manufacturing method |
| CN103357687A (en) * | 2013-07-09 | 2013-10-23 | 富通集团有限公司 | Method for producing copper rod and copper rod wire drawing machine |
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2013
- 2013-12-11 CN CN201310675731.1A patent/CN103646726B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050279074A1 (en) * | 2004-06-17 | 2005-12-22 | Johnson Douglas E | Cable and method of making the same |
| JP3918132B1 (en) * | 2006-03-24 | 2007-05-23 | 株式会社アスク | Drawing machine and drawing method |
| CN101254513A (en) * | 2008-03-20 | 2008-09-03 | 戴兴无 | Leadless alloy thread preparation |
| CN103143858A (en) * | 2013-02-25 | 2013-06-12 | 宁波市雪银铝业有限公司 | Aluminum welding wire manufacturing method |
| CN103357687A (en) * | 2013-07-09 | 2013-10-23 | 富通集团有限公司 | Method for producing copper rod and copper rod wire drawing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332255A (en) * | 2014-11-03 | 2015-02-04 | 广州番禺电缆集团有限公司 | Oil immersing device for production of low-smoke halogen-free cables and method for producing low-smoke halogen-free cables |
| CN106448944A (en) * | 2016-12-01 | 2017-02-22 | 江苏省威能达电线电缆有限公司 | Production process for drawing and twisting aluminum wire |
| CN106448945A (en) * | 2016-12-01 | 2017-02-22 | 江苏省威能达电线电缆有限公司 | Preparation method of outer aluminum mold line of compound aluminum conductor with soft core |
| CN107812794A (en) * | 2017-09-26 | 2018-03-20 | 唐山市丰南区宝忠热机元件厂 | LED radiating line and its production method |
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| CN103646726B (en) | 2016-01-20 |
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