CN101546631B - Method and device for downwards leading and continuously casting copper wire covering steel core - Google Patents
Method and device for downwards leading and continuously casting copper wire covering steel core Download PDFInfo
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- CN101546631B CN101546631B CN2008101872543A CN200810187254A CN101546631B CN 101546631 B CN101546631 B CN 101546631B CN 2008101872543 A CN2008101872543 A CN 2008101872543A CN 200810187254 A CN200810187254 A CN 200810187254A CN 101546631 B CN101546631 B CN 101546631B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 127
- 239000010959 steel Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005266 casting Methods 0.000 title claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 121
- 239000010949 copper Substances 0.000 claims abstract description 121
- 238000009749 continuous casting Methods 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- 238000007667 floating Methods 0.000 claims description 26
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 238000002425 crystallisation Methods 0.000 claims description 14
- 230000008025 crystallization Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 5
- 230000003028 elevating effect Effects 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 5
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005491 wire drawing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000003223 protective agent Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a method and a device for downwards leading and continuously casting a copper-wrapped steel core wire. The method for downwards leading and continuously casting a copper wire covering steel core wire comprises the following steps: a continuous casting furnace (8) with an inner cavity is used, the bottom of the continuous casting furnace (8) is provided with a graphite crystallizing mold (19) communicated with the inner cavity of the continuous casting furnace (8), the graphite crystallizing mold (19) comprises a cooling device and a basically vertical mold cavity (20), a steel core wire (2) inside the continuous casting furnace (8) penetrates through the basically vertical mold cavity (20) from top to bottom, copper liquid inside the continuous casting furnace (8) flows into a gap between the steel core wire (2) and the graphite crystallizing mold (19) and is congealed to wrap the steel core wire (2), and then a copper-wrapped steel core wire (10) is pulled out of the graphite crystallizing mold (19) in an interval way. Compared with the prior art, the method for downwards leading and continuously casting a copper-wrapped steel core wire can increase the thickness of copper wrapped on steel core wires, thereby enhancing the concentricity of the steel core wires and wrapping copper layers.
Description
Technical field
The present invention relates to be metal continuous cast in Fig. 1, draw down the preparation method that steel core covers copper cash and mainly may further comprise the steps:
The art field is specially following continuous cast method and the device of drawing that steel core covers copper cash.
Background technology
At present, the domestic main following three kinds of methods of copper of covering on the steel core top layer: 1, galvanoplastic: will handle clean steel wire (rod iron) and enter electroplating bath, and utilize electroplating principle, at the electroplating surface last layer copper of steel, this technology also claims cold depositing process.Its major defect is: the copper layer is thin, the easy residual electrolyte of copper steel faying face; Sub-thread heavy in section wire rod length is shorter, and tie point is too many when being used to do the earth connection use, and the construction transportation is inconvenient, and useful life is short; Electroplating technology has pollution to environment.2, coating method: will handle clean steel core and insert in the copper pipe, or wrap in outside the steel core with copper strips, by the argon arc welding welding, the power of tightening of utilizing vertical pulling machine wire drawing die is again tightened outer surface at steel core with copper pipe.This technology also claims cold drawn coating method, promptly with mechanical force the copper layer is coated on the steel core, and major defect is: the copper steel adhesion is poor.3, horizontal casting coats method: will handle the copper liquid that clean steel core horizontal direction is passed the copper melting furnace, the crystallizer of installing by level casts certain thickness copper continuously in the exit.This technology can solve the problem of the thin and method of the coating adhesion difference of copper electroplating layer, but its major defect is uniformity (concentricity) the control difficulty of copper layer, and the copper-iron alloy that steel core forms during by copper liquid can not guarantee that it does not spread in the copper stove.In addition, the report that the method for drawing continuous casting and rolling manufactured copper Baogang in the employing is also arranged, though the method has some improvement to copper layer uniformity, control is difficulty still relatively, and copper-iron alloy diffusion problem in the copper stove that steel core forms during by copper liquid can not guarantee to solve.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned the deficiencies in the prior art, the continuous cast method that provides a kind of steel core to cover copper cash can effectively be controlled copper layer thickness and uniformity when covering copper in the heavy in section.
Another object of the present invention is to prevent and guarantee the method that copper-iron alloy that steel core forms when passing through copper liquid can not spread in copper liquid.
Another purpose of the present invention is to provide the steel core of realizing said method to cover the copper cash casting apparatus.
The invention provides a kind of steel core covers under the copper cash and draws continuous cast method, this method is used the continuous casting furnace with inner chamber, the bottom of continuous casting furnace is provided with the graphite crystallization mould that communicates with the continuous casting furnace inner chamber, this crystallizing mould has cooling device and vertical substantially die cavity, steel core wire passes die cavity from top to bottom in continuous casting furnace, copper liquid in the continuous casting furnace enters in the gap between steel core wire and the crystallizing mould, solidify and be coated on the steel core wire, steel core covers copper cash and is pulled out crystallizing mould then, it is characterized in that described traction is an intermittent movement.
A kind of steel core of the present invention covers under the copper cash and draws casting apparatus, comprise continuous casting furnace, guiding device and draw-gear, the bottom of continuous casting furnace is provided with the crystallizing mould that communicates with the continuous casting furnace inner chamber, described crystallizing mould has cooling device and vertical substantially die cavity, steel core wire passes die cavity from top to bottom through described guiding device, and draw-gear is positioned at the lower end of crystallizing mould, is used to draw steel core and covers copper cash, it is characterized in that described draw-gear is the batch (-type) draw-gear.
When utilizing device continuous casting steel core of the present invention to cover copper cash, steel core covers copper cash and is pulled out the good crystallizing mould of lubrification off and on, pass through intermittent traction, can prolong the interior steel core wire of the crystallizing mould setting time of copper liquid on every side, guarantee concreting thickness, thereby provide condition for the big thickness of manufacturing steel core covers copper cash.
By method and apparatus of the present invention, form the different crystallizing moulds that solidify gap (gap between steel core wire and the mould intracavity wall) by design or use with steel core wire, can make the different steel cores that strengthen thickness and cover copper cash.
In addition, cover copper cash owing to draw the continuous casting steel core under the present invention, steel core wire is in continuous casting furnace, particularly be vertical direction in crystallizing mould, make steel core wire that the buoyancy of the gravity of invar heart yearn or copper liquid causes reduce (comparing) greatly, improved the uniformity of covering copper with horizontal casting with Concentricity tolerance between the die cavity.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 draws the continuous casting furnace structural representation under rotary;
Fig. 3 is an intermittent traction apparatus structure schematic diagram;
Fig. 4 is the cam mechanism schematic diagram;
Fig. 5 is the ratchet mechanism structural representation.
Among the figure: 1 pay off rack, 2 steel core wires, 3 cleaning machines, 4 directive wheels; 5 straighteners, 6 heating furnaces, 7 guiding devices, 8 continuous casting furnaces; 9 draw-gears, 10 copper clad steel lines, 11 admission machines, 12 sealing rings; 13 floating drums, 14 protective gas ingress pipes, 15 protective gas, 16 buoy liftings wheel; 17 holding furnaces, 18 pottery centering moulds, 19 crystallizing moulds, 20 crystallizing mould die cavitys; 21 bronze medal liquid, 22 runing rests, 23 water coolers, 24 secondary cooling apparatus; 25 cooling fluids, 26 pod apertures, 27 guiding gutters, 28 induction heaters; 29 shackle hooks, 30 melting furnaces, 31 deoxidation protective agents, 32 insulation materials; 33 pinch rollers, 34 pinch roller retaining mechanisms, 38 ratchet mechanisms, 39 gearboxes; 40 motors, 41 pivot points, 42 forks, 43 scroll wheels; 44 cams, 45 cam rotation axles, 46 drive ratchet, 47 check pawls; 48 intermittently-driving output shafts, 49 driven ratchets, 50 holddown springs.
Embodiment
Steel core of the present invention covers under the copper cash and draws casting apparatus, comprise continuous casting furnace 8, guiding device 7 and draw-gear 9, the bottom of continuous casting furnace 8 is provided with the crystallizing mould 19 that communicates with the continuous casting furnace inner chamber, described crystallizing mould 19 has cooling device 23,24 and vertical substantially die cavity 20, steel core wire 2 passes die cavity 20 from top to bottom through described guiding device 7, draw-gear 9 is positioned at the lower end of crystallizing mould 19, is used to draw steel core and covers copper cash 10, and described draw-gear 9 is batch (-type) draw-gears.
Use when drawing the continuous casting steel core under apparatus of the present invention and covering copper cash, steel core wire 2 passes die cavity 20 from top to bottom in continuous casting furnace 8, copper liquid in the continuous casting furnace 8 enter in the gap between steel core wire and the crystallizing mould 19, solidify to be coated on the steel core wire, and steel core covers copper cash 10 and pulled out crystallizing mould 19 by batch (-type) then.
By intermittent traction, can prolong the interior steel core wire of the crystallizing mould setting time of copper liquid on every side, guarantee concreting thickness, thereby provide condition for the big thickness of manufacturing steel core covers copper cash.By under draw continuous casting, because steel core wire is in continuous casting furnace, particularly be vertical direction in crystallizing mould, make steel core wire that the buoyancy of the gravity of invar heart yearn or copper liquid causes reduce greatly to compare, improved the uniformity of covering copper with horizontal casting with Concentricity tolerance between the die cavity.
On the basis of such scheme, the present invention can have following modification:
1. described crystallizing mould 19 is evenly equipped with copper liquid pod apertures 17 around the upstream extremity of die cavity 20, see Fig. 2.This structure can make steel core wire and copper liquid only contact in that the pod apertures place is of short duration, thereby reduce the diffusion in the copper liquid in stove of formed copper-iron alloy greatly, has guaranteed the quality of copper liquid.
2. described crystallizing mould 19 is a plurality of (not shown).This structure can be enhanced productivity greatly.
3. the upper end of described crystallizing mould 19 connects gas shield device, and steel core wire 2 enters crystallizing mould 19 through gas shield device.This structure can prevent that steel core wire was subjected to thermal oxidation before entering crystallizing mould, guarantees to cover the quality of copper.
4. the top of described crystallizing mould 19 is equipped with pottery centering mould 18, and pottery centering mould 18 has the through hole that aligns with described die cavity 20.Pottery centering mould is high temperature resistant, intensity is high, wear-resisting, can guarantee the concentricity between steel core wire and the crystallizing mould die cavity, and improve its stability.
5. described crystallizing mould cooling device 23,24 comprises the secondary cooling device 24 that is arranged on the water cooler 23 around the die cavity and is arranged on crystallizing mould 19 outlets.Water cooler 23 is used to make copper liquid to cool off in die cavity 20 and coats and is set in steel core wire, and 24 of secondary cooling devices are used for reducing fast the temperature that steel core covers copper cash, prevent its high-temperature oxydation.
6. described continuous casting furnace 8 comprises a holding furnace 17 and a melting furnace 30 that is attached thereto to one, described crystallizing mould 19 is arranged on the bottom of holding furnace 17, has guiding gutter 27 between the inner chamber of melting furnace 30 and holding furnace 17, a rotating mechanism links to each other with described continuous casting furnace 8, is used to control tilt rotation and changing between fusing position and continuous casting position of continuous casting furnace 8.For example, make described guiding gutter be higher than its exit position in the fusing position at holding furnace 17 1 ends in the entry position of melting furnace 30 1 ends, and make the inlet of guiding gutter 27 and the relative position of outlet (highly) can make copper liquid flow into holding furnace 17 from described melting furnace 30 in the continuous casting position, the leakage problem of using conventional obstruction mode to occur has been avoided in convenient control.
7. in continuous casting furnace 8; be with floating drum 13 on the described crystallizing mould 19; steel core wire 2 is transmitted downwards by the upper end of floating drum 13; floating drum 13 can move up and down by elevating mechanism; when floating drum drops to the continuous casting furnace bottom; its top is higher than the liquid level of copper liquid in the continuous casting furnace 8, and this floating drum 13 constitutes the gas shield device of steel core wire.This structure will prevent that the gas shield device of steel core wire oxidation and the choke apparatus that interrupts supply copper liquid in crystallizing mould from combining, and simplifies the structure greatly.
8. described draw-gear 9 comprises pinch roller 33 and the drive unit that has groove, and drive unit comprises stepping motor and the transmission mechanism that is attached thereto.Use stepping motor as drive unit, can improve the precision of intermittent traction, be convenient to regulate the cycle of traction.
9. described draw-gear 9 comprises pinch roller 33 and the drive unit that has groove, drive unit comprise gear 39 that motor 40 and order link to each other, cam 44, with the main fork 42 of cam profile motion, pivotally connected on main fork 42 driving ratchet 46, driven ratchet 49, prevent driven ratchet 49 rotating check pawls 50, driven ratchet 49 is connected with pinch roller 33 through transmission mechanism.This batch (-type) haulage gear is the Purely mechanical structure, can improve the stability of pulling motion.
In addition, device of the present invention can also be provided with steel core wire coalignment and cleaning device before continuous casting furnace, like this, can improve the stability of steel core wire input crystallizing mould on the one hand, the concentricity of copper is covered in assurance, can improve the metallurgical binding of copper liquid and steel core wire on the one hand, improve the quality that steel core covers copper cash.
After device of the present invention, the finish draw device can be set, above-mentioned steel core be covered the copper cash blank be drawn into the continuous copper clad steel heart yearn of the higher sub-thread of precision size by wire drawing machine.
Steel core of the present invention covers under the copper cash and draws continuous cast method, it uses the continuous casting furnace 8 with inner chamber, the bottom of continuous casting furnace is provided with the graphite crystallization mould 19 that communicates with the continuous casting furnace inner chamber, this crystallizing mould 19 has cooling device and vertical substantially die cavity 20, steel core wire 2 passes die cavity 20 from top to bottom in continuous casting furnace, copper liquid in the continuous casting furnace enters in the gap between steel core wire and the crystallizing mould 19, solidify and be coated on the steel core wire, steel core covers copper cash 10 and is pulled out crystallizing mould 19 then, and described traction is an intermittent movement.
Based on the above method, the present invention can have following modification:
1. described steel core wire 2 use dish round steel heart yearns are before entering crystallizing mould 19, through online alignment process.
2. described steel core wire 2 use dish round steel heart yearns are before entering crystallizing mould 19, through on-line cleaning and heating, drying operation.
Use dish round steel heart yearn, and by online alignment, cleaning and baking operation, can enhance productivity, improve the metallurgical binding of copper liquid and steel core wire, improve the quality of products.
3. described cleaning comprises that pickling, alkali neutralization and water clean, and described heating, drying carries out in the Buchholz protection heating furnace.
4. steel core wire 2 enters crystallizing mould 19 under inert gas shielding in continuous casting furnace, and the time interval of described intermittent movement does not leak copper liquid when copper cash pulls out crystallizing mould 19 times outlet and is as the criterion so that steel core is covered.
In Fig. 1, draw down the preparation method that steel core covers copper cash and mainly may further comprise the steps:
(1) preliminary treatment: will remove oxide layer earlier, be drawn into dish round steel heart yearn 2 before entering continuous casting furnace 8 continuous castings with wire drawing machine then, at first pass through on-line cleaning, online alignment and heating, drying operation, clean as comprising that pickling, alkali neutralization and water clean, heating, drying carries out in Buchholz protection heating furnace 6, is 350～C-400～C as heating-up temperature;
(2) continuous casting: will carry out continuous casting by continuous casting furnace 8 again through pretreated steel core wire 2; the continuous casting furnace 8 that this method is used comprises melting furnace 30 and has inner chamber holding furnace 17; the bottom of holding furnace 17 is provided with the crystallizing mould 19 that communicates with holding furnace 17 inner chambers; crystallizing mould 19 has the water cooler 23 that is arranged on around the crystallization die cavity 20; be arranged on the secondary cooling apparatus 24 of crystallizing mould 19 outlets and vertical substantially crystallization die cavity 20; steel core wire 2 passes crystallization die cavity 20 from top to bottom through described guiding device 7; steel core wire 2 enters crystallizing mould 19 under inert gas shielding in holding furnace 17; copper liquid 21 in the holding furnace 17 enter in the gap between steel core wire 2 and the crystallizing mould 19; solidify and be coated on the steel core wire 2; steel core covers copper cash 10 and pulls out crystallizing mould 19 by draw-gear 9 then; the time interval of intermittent movement does not leak copper liquid when copper cash 10 pulls out crystallizing mould 19 times outlet and is as the criterion so that steel core is covered; because traction is an intermittent movement, make the copper layer that covers that steel core covers copper cash 10 stablize at whole casting process.The steel core that pulls out covers copper cash 10 and covers copper cash dish circle blank by admission machine 11 harvest steel cores.
Steel core covers copper cash dish circle blank and can be used for following process, as be drawn into the continuous copper clad steel heart yearn of the higher sub-thread of precision size by wire drawing machine.
In Fig. 2, show steel core of the present invention and cover a kind of concrete structure that draws casting apparatus under the copper cash, it comprises continuous casting furnace 8, guiding device 7 and draw-gear 9, continuous casting furnace 8 comprises melting furnace 30 and holding furnace 17, melting furnace 30 and holding furnace 17 are connected by guiding gutter 27, and continuous casting furnace 8 is provided with induction heater 28 and insulation material 32, the bottom of holding furnace 17 is provided with the crystallizing mould 19 that communicates with holding furnace 17 inner chambers, and crystallizing mould 19 is evenly equipped with copper liquid pod apertures 26 around the upstream extremity of crystallization die cavity 20; Crystallizing mould 19 has water cooler 23, the secondary cooling apparatus 24 that is arranged on the crystallizing mould outlet and the vertical substantially crystallization die cavity 20 that is arranged on around the crystallization die cavity 20, the top of crystallizing mould 19 is equipped with pottery centering mould 18, and pottery centering mould 18 has the through hole that aligns with crystallization die cavity 20; Steel core wire 2 passes crystallization die cavity 20 from top to bottom through guiding device 7, and draw-gear 9 is positioned at crystallizing mould 19 lower ends, is used to draw steel core and covers copper cash 10; In holding furnace 17; a floating drum 13 is enclosed within on the crystallizing mould 19; the upper end of floating drum 13 connects Buchholz protection pipe 14; protective gas 15 adds in the floating drum 13 by Buchholz protection pipe 14; steel core wire 2 enters crystallizing mould 19 again through protective gas 15; steel core wire 2 is transmitted downwards by the upper end of floating drum 13; floating drum 13 can be taken turns 16 by buoy lifting and be moved up and down; when floating drum 13 drops to holding furnace 17 bottoms; its top is higher than the liquid level of copper liquid 21 in the holding furnace 17; and the gas shield device of a steel core wire of these floating drum 13 formations, and can stop floating drum 13 outer copper liquid 21 to flow in the floating drums 13.During concrete operations, 1. spur shackle hook 29 melting furnace 30 is rotated counterclockwise extreme lower position around runing rest 22, in melting furnace 30, add cathode copper, by induction heater 28 heating cathode coppers, make cathode copper be molten into copper liquid 21, surface coverage deoxidation protective agent 31 at copper liquid 21, crystallizing mould 19 is installed in holding furnace 17 bottoms simultaneously, again floating drum 13 is enclosed within on the crystallizing mould 19, floating drum 13 is put into the bottom of holding furnace 17 by buoy lifting wheel 16, charge into an amount of protective gas 15 by protective gas ingress pipe 14 in the floating drum 13, put on the steel core wire of handling 2 by guiding device 7; 2. spur shackle hook 29 melting furnace 30 is rotated clockwise to horizontal level around runing rest 22, copper liquid 21 (for example cathode copper is melted to 1150 ℃～1200 ℃) in the melting furnace 30 flows in the holding furnace 17 by guiding gutter 27, deoxidation protective agent 31 will be covered on the copper liquid 21 in the holding furnace 17, by the 28 heating copper liquid 21 of the induction heater on the holding furnace 17, by the time (for example cathode copper liquid is 1150 ℃～1200 ℃) after copper liquid 21 temperature constant, by buoy lifting wheel 16 mobile floating drum 13 is elevated to certain position, the copper liquid 21 that adds in the holding furnace 17 flows in the crystallization die cavitys 20 by the pod apertures around crystallizing mould 19 tops 26; 3. affect steel core wire 2 to move down by the draw-gear 9 that is installed in crystallizing mould 19 lower ends, copper clad steel heart yearn 10 is by after being arranged on the water cooler 23 around the crystallization die cavity 20 and being arranged on secondary cooling apparatus 24 coolings of crystallizing mould 19 outlets, and what come out at last is exactly that uniform steel core covers copper cash 10.
In Fig. 3-Fig. 5, draw-gear 9 comprises pinch roller 33, pinch roller retaining mechanism 34, cam 37 and the ratchet mechanism 38 that has groove, pinch roller 33 compresses steel core by its groove and covers copper cash 10, on the intermittently-driving output shaft 48 of ratchet mechanism 38, be provided with fork 42, scroll wheel 43 is equipped with on the top of fork 42, scroll wheel 43 relies on the cam 44, driving ratchet 46 with driven ratchet 49 outline lines engagement is housed on fork 42, be provided with the check pawl 47 that meshes with driven ratchet 49 outline lines in the side of driven ratchet 49, holddown spring 50 is arranged on the check pawl 47; Motor 40 links to each other with gearbox 39.During work, fork 42 is swung along with cam 44 rotations, card is moving up and down on the tooth of driven ratchet 49 can to drive driving ratchet 46 during fork 42 swings, thereby promoting driven ratchet 49 rotates, and check pawl 47 also can constantly be stuck on the tooth of driven ratchet 49 along with driven ratchet 49 rotates under the effect of holddown spring 50, stop driven ratchet 49 revolutions, control pinch rollers 33 motions, thereby reach the effect of intermittent traction through intermittently-driving output shaft 48 and pinch roller retaining mechanism 34.
The steel core of use manufacturing of the present invention covers copper cash and has the following advantages:
1. the composite bed of copper between steel is that metallurgical molecule is combined, and composite bed is thicker, and copper layer thickness can reach more than the 1.0mm;
2. adopt pottery decide core and guiding device, it is accurate also fine-tuning decide core, and the concentricity departure can be controlled in 1: 1.2 scope;
3. because the copper-iron alloy diffusion reduces, the conductance of top layer copper significantly improves;
4. owing to draw continuous cast copper under adopting, can not occur because the gravity of steel core or the uniformity that buoyancy effect covers copper, and the below in coating binding sites molten bath in continuous casting furnace of steel core wire and copper liquid, big copper hydrostatic pressure power more is conducive to copper liquid and the welding of coated copper interface.
Claims (4)
1. a steel core covers under the copper cash and draws continuous cast method, this method is used the continuous casting furnace (8) with inner chamber, it is characterized in that, continuous casting furnace (8) comprises melting furnace (30) and has the holding furnace (17) of inner chamber, the bottom of holding furnace (17) is provided with the graphite crystallization mould (19) that communicates with holding furnace (17) inner chamber, this crystallizing mould (19) has cooling device and vertical substantially die cavity (20), steel core wire (2) passes die cavity (20) from top to bottom in continuous casting furnace (8), be with floating drum (13) on the crystallizing mould (19), copper liquid (21) in the melting furnace (30) flows in the holding furnace (17) by guiding gutter (27), by the heating of the induction heater (28) on the holding furnace (17) copper liquid (21), by the time after copper liquid (21) temperature constant, floating drum (13) is elevated to certain position, copper liquid (21) in the holding furnace (17) is by in the gap between inflow steel core wire of the pod apertures (26) around crystallizing mould (19) top and the crystallizing mould (19), solidify and be coated on the steel core wire, steel core covers copper cash (10) and is pulled out crystallizing mould (19) then, and described traction is an intermittent movement.
2. a steel core covers under the copper cash and draws casting apparatus, comprise continuous casting furnace (8), guiding device (7) and draw-gear (9), a rotating mechanism links to each other with described continuous casting furnace (8), be used to control tilt rotation and between fusing position and continuous casting position, changing of continuous casting furnace (8), it is characterized in that, continuous casting furnace (8) comprises melting furnace (30) and has the holding furnace (17) of inner chamber, has guiding gutter (27) between the inner chamber of melting furnace (30) and holding furnace (17), the bottom of holding furnace (17) is provided with the graphite crystallization mould (19) that communicates with holding furnace (17) inner chamber, described crystallizing mould (19) has cooling device (23,24) and vertical substantially die cavity (20), steel core wire (2) passes die cavity (20) from top to bottom through described guiding device (7), be with floating drum (13) on the crystallizing mould (19), draw-gear is positioned at the lower end of crystallizing mould (19), be used to draw steel core and cover copper cash (10), described draw-gear is batch (-type) draw-gear (9).
3. draw casting apparatus under according to claim 2; it is characterized in that; in continuous casting furnace; steel core wire (2) is transmitted downwards by the upper end of floating drum (13); floating drum (13) can move up and down by elevating mechanism; when floating drum dropped to the continuous casting furnace bottom, its top was higher than the liquid level of copper liquid in the continuous casting furnace, and this floating drum (13) constitutes the gas shield device of steel core wire.
4. draw casting apparatus under according to claim 3, it is characterized in that, the top of described crystallizing mould (19) is equipped with pottery centering mould (18), and pottery centering mould (18) has the through hole that aligns with described die cavity (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101872543A CN101546631B (en) | 2008-02-22 | 2008-12-19 | Method and device for downwards leading and continuously casting copper wire covering steel core |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810007977.0 | 2008-02-22 | ||
| CN200810007977 | 2008-02-22 | ||
| CN2008101872543A CN101546631B (en) | 2008-02-22 | 2008-12-19 | Method and device for downwards leading and continuously casting copper wire covering steel core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101546631A CN101546631A (en) | 2009-09-30 |
| CN101546631B true CN101546631B (en) | 2010-11-10 |
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|---|---|---|---|
| CN2008101872543A Active CN101546631B (en) | 2008-02-22 | 2008-12-19 | Method and device for downwards leading and continuously casting copper wire covering steel core |
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| Country | Link |
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| CN115488320A (en) * | 2022-09-21 | 2022-12-20 | 中铁建电气化局集团康远新材料有限公司 | Production equipment and method of anti-icing and deicing high-strength high-conductivity copper-steel composite wire |
| CN115674629A (en) * | 2022-11-01 | 2023-02-03 | 湖北力生电缆有限公司 | High uniformity cable sheath extruding machine for manufacturing |
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