CN101834035A - Preparation method of molded line used for stranded conductor - Google Patents
Preparation method of molded line used for stranded conductor Download PDFInfo
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- CN101834035A CN101834035A CN 201010161300 CN201010161300A CN101834035A CN 101834035 A CN101834035 A CN 101834035A CN 201010161300 CN201010161300 CN 201010161300 CN 201010161300 A CN201010161300 A CN 201010161300A CN 101834035 A CN101834035 A CN 101834035A
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Abstract
The invention relates to the improvement of the preparation method of the molded line used for a transmission stranded conductor, and is characterized by comprising the following steps: firstly reducing deformation by multiple round broaching; carrying out normal temperature roll to form a molded line with a needed shape when approximating to the area of the needed molded line; and finally carrying out one molded line mold reforming. The invention realizes the optimal process combination of preparing molded line conductor in batch, the wire breaking frequency is greatly reduced, fundamentally no broken wire exists in the experiment, the production rate is high, and the efficiency is high, the production efficiency can be increased by at least more than 20%. In the same way, when aluminum ladder-shaped or Z-shaped molded lines are prepared, the production rates can respectively reach 11 m/s and 9-10 m/s; the prepared molded line has good surface quality, no burr, bright and clean large-length surface and no defects of hemmed edge, crackle, rag, delamination and the like, not only can save equipment investment, but also can save preparation energy consumption.
Description
Technical field
The present invention is to the improvement of transmission of electricity preparation method of molded line used for stranded conductor, relates to a kind of production efficiency height, is difficult for fracture of wire, the measured molded lines conductor of gained conductive surface matter preparation method.
Background technology
People improve the stranded conductor activity coefficient in order to dwindle the stranded conductor external diameter, and a kind of method is to adopt non-round line conductor stranded.The transmission of electricity molded line used for stranded conductor, basic is good copper of plasticity or aluminium, because it is plasticity and thin relatively diameter (general diameter is no more than 5mm) relatively preferably, custom adopts the multi-pass xenotype mold to draw in the industry, obtains the molded lines conductor through being out of shape step by step, is about to copper bar or aluminium bar, be out of shape step by step by multi-pass (being generally the 7-10 road) xenotype mold, forming required form molded lines conductor, all is so to prepare the molded lines conductor for a long time in the industry, does not change so far.Owing to be used to draw the copper or the aluminium of conductor, for improving conductance, has higher purity, but its tensile strength lower (far below iron and steel), and be again that thin diameter draws, break for preventing to draw in the distortion, must control every time deflection, usually per pass moding shape area ratio is set at 1.15-1.2 doubly, it is more to cause distortion to draw passage, and can not hard intensity draw (hard intensity is easily broken) again, again owing to be the inequality distortion around the distortion of molded lines conductor, also cause fracture of wire in the pulling process easily, and it is bigger to wear the mould difficulty behind the fracture of wire, therefore causes draw rate slower, and production efficiency is lower, with trapezoidal or Z-shaped aluminium molded lines is example, and draw rate only is respectively 5 meter per seconds and 2-3 meter per second; Secondly, because inhomogeneous deformation produces relatively large metal fillings and is deposited in the Drawing die set mouth, cause drawing molded lines surface to be prone to burr, rough, both influenced conductor performance and attractive in appearance, also cause the drawing fracture of wire easily, also can increase corona in use, increase and carry power consumption; Besides, it is many to draw passage, and not only production efficiency is low, and the preparation power consumption is high.In addition, inhomogeneous deformation also causes the wearing and tearing of Drawing die set easily, and special-shaped Drawing die set manufacturing cost is higher relatively, has also increased the drawing cost.
Though the long-term objective reality of above-mentioned deficiency, people also know the steel for high strength and high rigidity simultaneously, and the roll forming of employing mode is arranged, and the steel profile rolling mostly is a hot-roll forming.Because the Shu Bo of technology idea, in the industry never the someone expect adopting steel profile roll forming mode to prepare the molded lines conductor, the objective present situation of preparation method of molded line used for stranded conductor at present that Here it is.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, and providing a kind of can enhance productivity by a relatively large margin, and can fracture of wire, and preparation cost is low, produces the measured preparation method of molded line used for stranded conductor of molded lines conductive surface matter.
The object of the invention realizes that main the improvement is at first to adopt multiple tracks to draw round line, sectional area near and when being slightly larger than molded lines, for example≤and 1.5 times of moulding molded lines area, normal temperature roll forming form wire is after the finishing of one molded lines mould, thereby overcome above-mentioned prior art deficiency, realize the object of the invention.Specifically, preparation method of molded line used for stranded conductor of the present invention, comprise that relatively large round bar obtains required form through reducing distortion step by step, it is characterized in that reducing step by step to be deformed into: at first reduce distortion through circular drawing of multi-pass, near final required molded lines area the time, become the required form molded lines through the normal temperature roll forming, after the shaping of one molded lines mould.
The present invention draws, rolls compositions, process, it is simple relatively, easy to have made full use of the drawing round conductor, and can be high-speed relatively, and drawing the circle line, side face crimp is even, can improve the area distortion ratio, deformation ratio can reach 1.2-1.4, when drawing obtains approaching required molded lines area, again through being rolled into the molded lines cross section, after the finishing of one molded lines mould.So both can keep higher production efficiency, and make the preparation molded lines simple simultaneously again, production operation is good, and suitable mass industrialized production, thereby has better coordinated production efficiency and the easy relation of preparation.Preparing total passage only needs the 5-8 road, can reduce 2～3, has also reduced preparation and has taken up an area of.
The said extremely approaching final required molded lines area of round line that draws mainly is to consider from reducing back roll forming deflection angle, helps enhancing productivity.Drawing circular area approaching more rolling profiled-cross-section in front is good more theoretically, but objective preparation of industrialization is actual be difficult to accomplish accurately near or equate, and each several part discontinuity in the molded lines operation of rolling, be out of shape inhomogeneous, the corner of molded lines is rounding very, need actual cross-section should be a bit larger tham the required area of molded lines, the present invention tests and determines for example≤1.5 times molded lines cross-sectional area of conductor, wherein 1.3-1.4 molded lines sectional area more preferably.But obviously should not be construed as, this value or interval are mathematical absolute limit of accuracy value, suitably on a small quantity greater than neither, only be to influence part efficient.
The roll forming moulding, for example by having the rolling roller rolling of profile groove, rolling roller upper groove cross sectional shape is determined design according to moulding molded lines shape, shaping groove can be arranged on the roll, also can be arranged on rolling on two rolls; Every breaker roll upper groove number can be one, a rolling a kind of specification of conductor; Can be two or more also, be used for simultaneously rolling two or many molded lines conductors, can one rolling, two or above drawing are respectively joined in front and back, can improve the roll utilance, have improved production efficiency especially; And can be at rolling different specification size molded lines conductor, for example ectonexine molded lines on one roll.Because conductor material plasticity is better relatively, the rolling roller can be initiatively, also can be passive.Test shows: rolling conductor deflection can not be excessive, crosses conference and cause deflection excessive, and the elongation at break that exceeds material causes fracture of wire easily.The practical conductor drawing speed is faster than rolling, and the present invention only sets rolling together, helps enhancing productivity, if adopt whole rollings, or the multiple tracks rolling, not only production efficiency can reduce, and rolling power is big, power consumption is high, and the rolling equipment investment is also big, uneconomical; And rolling molded lines is difficult to obtain cross section accurate molded lines in full accord because the each several part distortion is inconsistent.
Shut out molded lines embryo spare,, can make longitudinal shape obtain accurate unanimity after the shaping of one molded lines sizing die makes the rolling shape that obtains roughly obtain finishing.
Preparation method of molded line used for stranded conductor of the present invention, change the preparation of industry molded lines and for a long time, generally adopted the full technology of preparing prejudice that draws, initiated and drawn, rolled combined preparation technology, with respect to prior art, owing to adopt the multiple tracks distortion to draw round line, one roll forming, draw the shaping group technology at last, realized that molded lines conductor prepared in batches produces the optimised process combination.Not only significantly reduce the fracture of wire number of times, fracture of wire does not appear in test substantially, and speed of production is fast, the efficient height, production efficiency can improve more than 20% at least, prepares the trapezoidal or Z-shaped molded lines of aluminium equally, and speed of production can reach 10 meter per seconds and 9-10 meter per second respectively, and gained molded lines surface quality is good, no burr, length any surface finish, defectives such as no edging, crackle, overlap, peeling, be preparation method's gained molded lines of the present invention, be different from an important diagnostic characteristics of prior art for preparing molded lines.Drawing molded lines need be with special low speed than wire drawing machine, and this method can adopt common high-speed wire-drawing machine just can realize, not only saves equipment investment, and has saved the preparation energy resource consumption.Particularly a pair roller can design a plurality of grooves simultaneously, is used for rolling plurality of specifications molded lines, perhaps cooperates two cover wire-drawing equipments, has improved the economy of preparation especially.Characteristics such as molded lines preparation method of the present invention with respect to prior art, has the preparation efficiency height, and energy consumption is low, and gained molded lines surface quality is good are innovations greatly of preparation molded lines.
Below in conjunction with two exemplary embodiments; essence of the present invention is further understood in exemplary illustration and help; but the embodiment detail only is for the present invention is described; do not represent the present invention to conceive whole technical schemes down; therefore should not be construed as the total technical scheme of the present invention is limited; some are In the view of the technical staff; the unsubstantiality that does not depart from the present invention's design increases and/or change; for example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection range of the present invention.
Description of drawings
Fig. 1 draws for the preparation of the inventive method molded lines and rolls the combination rough schematic view.
Fig. 2 is a rolling wheel schematic diagram among Fig. 1.
Fig. 3 is a shaping drawing-die schematic diagram among Fig. 1.
Fig. 4-Fig. 6 is molded lines schematic cross-section commonly used.
Embodiment
Embodiment 1: referring to Fig. 1-3, and the circular aluminium bar 1 of φ 12.0mm, circular drawing-die 2 draws through 5 roads, and obtaining sectional area is 30.65mm
2Round conductor, roll mould 3 (the embodiment groove is trapezoidal) through what pair roller was formed, obtaining sectional area is 23.0～24.0mm
2Trapezoidal conductor, after hole shape is trapezoidal 4.1 drawing-die 4 shapings, obtain the trapezoidal molded lines 5 of smooth finishing.
Change rolling wheel flute profile and sizing die degree of lip-rounding shape, can preparation example as Z-shaped, fan-shaped, trapezoidal as described in Fig. 4-Fig. 6, with and the molded lines of shape.
Embodiment 2: as described above, be processed with two road grooves arranged side by side on the roller, can cooperate with two draw line, perhaps rolling two kinds of not specification, size molded lines.
As required, make molded lines, can pass through subsequent anneal or unannealed, obtain soft aluminium molded lines conductor or duralumin molded lines conductor respectively.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example groove is arranged on a roller or two rollers change; groove and finishing drawing-die degree of lip-rounding shape change; or the like unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection range.
Claims (5)
1. preparation method of molded line used for stranded conductor, comprise that relatively large round bar obtains required form through reducing distortion step by step, it is characterized in that reducing step by step to be deformed into: at first reduce distortion through circular drawing of multi-pass, near final required molded lines area the time, become the required form molded lines through the normal temperature roll forming, after the shaping of one molded lines mould.
2. according to the described preparation method of molded line used for stranded conductor of claim 1, roll forming when it is characterized in that drawing long-pending≤1.5 times of molded lines conductors in circular section.
3. according to the described preparation method of molded line used for stranded conductor of claim 2, it is characterized in that drawing the circular section to amass roll forming when being 1.3-1.4 times of molded lines conductor.
4. according to the described preparation method of molded line used for stranded conductor of claim 1, it is characterized in that rolling die has two roads arranged side by side or above forming tank.
5. according to claim 1,2,3 or 4 described preparation method of molded line used for stranded conductor, it is characterized in that preparing total passage is the 5-8 road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161300 CN101834035A (en) | 2010-04-26 | 2010-04-26 | Preparation method of molded line used for stranded conductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161300 CN101834035A (en) | 2010-04-26 | 2010-04-26 | Preparation method of molded line used for stranded conductor |
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| CN101834035A true CN101834035A (en) | 2010-09-15 |
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| CN 201010161300 Pending CN101834035A (en) | 2010-04-26 | 2010-04-26 | Preparation method of molded line used for stranded conductor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489503A (en) * | 2012-06-12 | 2014-01-01 | 深圳市奔达康电缆股份有限公司 | Twisted structure of metal wires for cables, equipment and manufacturing process of twisted structure |
| CN106229035A (en) * | 2016-08-24 | 2016-12-14 | 超达电线电缆有限公司 | Profile conductor and preparation method thereof and application in the cable |
| CN107068299A (en) * | 2017-03-28 | 2017-08-18 | 中天电力光缆有限公司 | A kind of method that broken thread detector and burn out detection for cable twist equipment judges |
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| CN101169987A (en) * | 2007-12-04 | 2008-04-30 | 北京科技大学 | Copper cladded aluminum composite thin flat wire and its preparation method |
| CN101236798A (en) * | 2008-02-04 | 2008-08-06 | 北京科技大学 | A copper adulterated aluminum complex flat line and its making method |
| CN101510455A (en) * | 2009-03-30 | 2009-08-19 | 德阳东佳港机电设备有限公司 | Technology and apparatus for manufacturing shaped conductor |
| CN101567234A (en) * | 2009-06-03 | 2009-10-28 | 武汉电缆集团有限公司 | Method for preparing capacity-increased and energy-saving overhead power transmission shaped conductor |
| CN101599321A (en) * | 2008-09-25 | 2009-12-09 | 杭州金塔电力线路器材有限公司 | Method for producing copper clad aluminum busbars and special equipment |
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2010
- 2010-04-26 CN CN 201010161300 patent/CN101834035A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169987A (en) * | 2007-12-04 | 2008-04-30 | 北京科技大学 | Copper cladded aluminum composite thin flat wire and its preparation method |
| CN101236798A (en) * | 2008-02-04 | 2008-08-06 | 北京科技大学 | A copper adulterated aluminum complex flat line and its making method |
| CN101599321A (en) * | 2008-09-25 | 2009-12-09 | 杭州金塔电力线路器材有限公司 | Method for producing copper clad aluminum busbars and special equipment |
| CN101510455A (en) * | 2009-03-30 | 2009-08-19 | 德阳东佳港机电设备有限公司 | Technology and apparatus for manufacturing shaped conductor |
| CN101567234A (en) * | 2009-06-03 | 2009-10-28 | 武汉电缆集团有限公司 | Method for preparing capacity-increased and energy-saving overhead power transmission shaped conductor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489503A (en) * | 2012-06-12 | 2014-01-01 | 深圳市奔达康电缆股份有限公司 | Twisted structure of metal wires for cables, equipment and manufacturing process of twisted structure |
| CN103489503B (en) * | 2012-06-12 | 2016-06-22 | 深圳市奔达康电缆股份有限公司 | Cable metal wire rod twists structure processed, equipment and preparation technology thereof |
| CN106229035A (en) * | 2016-08-24 | 2016-12-14 | 超达电线电缆有限公司 | Profile conductor and preparation method thereof and application in the cable |
| CN107068299A (en) * | 2017-03-28 | 2017-08-18 | 中天电力光缆有限公司 | A kind of method that broken thread detector and burn out detection for cable twist equipment judges |
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Open date: 20100915 |