CN1086323C - Technology for casting and drawing steel-aluminum compounded electrically conductive wire - Google Patents
Technology for casting and drawing steel-aluminum compounded electrically conductive wire Download PDFInfo
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- CN1086323C CN1086323C CN98121022A CN98121022A CN1086323C CN 1086323 C CN1086323 C CN 1086323C CN 98121022 A CN98121022 A CN 98121022A CN 98121022 A CN98121022 A CN 98121022A CN 1086323 C CN1086323 C CN 1086323C
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Abstract
The present invention relates to a method for casting and drawing steel-aluminum compound conductive wires, which comprises four sections of surface processing, preheating, casting and drawing for compounding and post-processing. The method has the following main technological parameters: the preheating temperature of steel wires is from 500 to 800 DEG C; the casting temperature of the aluminium liquid is from 750 to 950 DEG C; the heating temperature of a spout is from 800 to 1000 DEG C; the area reducing ratio of the compound wires is from 8 to 20%. Casting and drawing speed is reduced when the preheating temperature of the steel wires and the casting temperature of the aluminium liquid are raised. The aluminium-steel compound wires produced by the present invention have the advantages of more specification, high dimensional precision, good electrical conductivity and surface quality, etc.
Description
The invention belongs to the metallurgical and shaping field of material.
The production method that existing compound wire is commonly used at present mainly contains Compound Extrusion method and immersion plating.Wherein immersion plating is mainly used in and produces (or copper) steel wire of aluminizing, and multiple layer thickness can only reach 2.30-75um; The Compound Extrusion method be fully rely on squeegee roller frictional force the aluminium extrusion cladding on the surface of steel wire, the power of equipment is very big, produces discontinuous, therefore investment greatly, the production cost height; Steel aluminium interface bond strength is relatively poor simultaneously, easily produces eccentric phenomena, can not satisfy the conduction requirement.
The object of the present invention is to provide that a kind of flow process is short, production cost is low, small investment, bond strength height, but the method for production plurality of specifications casting and drawing steel-aluminum compounded electrically conductive wire.
Content of the present invention: its processing step mainly comprises: the surface treatment of steel wire, preheating, casting are drawn compound and the post processing four processes.The surface treatment of steel wire comprises: oil removing, pickling, washing and prefluxing, its main purpose are to guarantee that cladding liquid is fully wetting in Steel Wire Surface; The preheating of steel wire is in order to prevent that temperature of aluminum liquid from reducing, and guarantees the surface of wetting steel preferably.It is that the cooling by crystallizer of steel wire and aluminium liquid is combined that casting is drawn compound, mainly comprises three parts: be incubated, solidify and be out of shape.Insulation relies on holding furnace to realize, its objective is the temperature of aluminium liquid is kept relative stability.Solidify by crystallizer and realize, its effect is the complex cooled and solidified of steel wire and aluminium liquid composition, to reach compound purpose.Distortion is carried out in drawing die, makes compound wire produce certain deformation, with mechanical performance, electric conductivity and the surface quality of improving aluminium lamination.Specific embodiment is: at first carry out the surface treatment of steel wire, steel wire is carried out pickling with sulfuric acid or hydrochloric acid again by the alkali cleaning oil removing with after washing, to remove the iron oxide of Steel Wire Surface, again through washing back prefluxing, scaling powder will be coated with evenly steel wire after overpickling; Carry out preheating through making steel wire enter load coil after the surface treatment, the surperficial here steel wire that scribbles even scaling powder is after high-frequency induction heating, and moisture content is evaporated, and the temperature of steel wire obtains bigger raising; Cast then and draw compoundly, steel wire through preheating is entered in the aluminium liquid in the holding furnace, aluminium liquid is fully wetting on the surface of steel wire, and scaling powder fully decomposes, and makes steel aluminium interface form metallurgical binding.Steel wire passes aluminium liquid rear surface and has soaked into aluminium liquid, the steel wire that the surface is loaded with aluminium liquid enters crystallizer, the aluminium liquid of Steel Wire Surface is forced to cooling and solidifies very soon by crystallizer the time, enter drawing die then, in drawing die, because the temperature of complex is still than higher, the yield strength ratio steel of aluminium lamination is much smaller, aluminium lamination will produce distortion, and its mechanical performance is improved, and electric conductivity and surface quality also improve.Draw the steel-aluminum compounded electrically conductive wire after compound to carry out post processing through casting, post processing mainly comprises finish draw and annealing, and annealing temperature is 350 ℃ ± 10 ℃, is incubated 30 minutes.To improve product precision, surface quality and elimination steel aluminium interface residual stress.Technological parameter of the present invention is: steel wire preheat temperature: 500-800 ℃, aluminium liquid cast temperature is 750-950 ℃, chewing sub-heating-up temperature is 800-1000 ℃ of compound wire reduction of area: 8-20%, casting pulling rate degree raises with steel wire preheat temperature and aluminium liquid cast temperature and reduces, when wire temperature and temperature of aluminum liquid when the highest, casting pulling rate degree is 10-14mm/s, and when steel wire and temperature of aluminum liquid all drop to when minimum, casting pulling rate degree is 25-30mm/s.
Further narrate content of the present invention with drawings and Examples below.
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the device structure schematic diagram of the inventive method;
Fig. 3 is for chewing son and crystallizer joining place profile in the device therefor of the present invention;
Fig. 4 is crystallizer and drawing die joining place profile in the device therefor of the present invention.
Among the figure, 1 tundish, 2 heater coils, 3 holding furnaces, 4 chew son, 5 crystallizers, 6 coolant outlets, 7 drawing dies, 8 compound wires, 9 cooling water inlets, 10 heat insulating mattress.
Embodiment, the making of Ф 11mm aluminium Baogang compound wire.
Selecting steel wire diameter is Ф 4.5mm, chews son and makes of high purity graphite, and diameter of bore is 11mm, and crystallizer adopts red copper to make, internal diameter is 12mm, and wall thickness is 5mm, and drawing die is made with heat resisting steel, the inlet diameter of mould is 12.5mm, and the outlet diameter after the distortion is 11mm, and calibrating strap is failed to grow up in 2mm.According to above-mentioned method with steel wire through washing again after the alkali cleaning, washing, pickling, coating pretreatment procedure such as scaling powder equably penetrates equipment to steel wire and is fixed on the casting drawing head, steel wire is through the load coil preheating, and preheat temperature is 700 ℃, is heated to predetermined temperature chewing son.Cast then and draw compoundly, aluminium liquid pouring temperature is 850 ℃, and 10-14 starts drawing equipment after second in the casting beginning, and casting pulling rate degree is 11.5mm/s, i.e. the aluminium Baogang compound wire of Ф 11mm is pulled out in casting.
Method of the present invention is produced steel-aluminum compounded electrically conductive wire and is had the dimensional accuracy height, the advantage that electric conductivity and surface quality are good, but not only production plurality of specifications aluminium Baogang's compound wire but also can produce the long span trolley line, send electric wire and distribution wire.
Claims (2)
1. the method for a casting and drawing steel-aluminum compounded electrically conductive wire, the processing step that it is characterized in that this method comprises: the surface treatment of steel wire, preheating, casting are drawn compound and the post processing four processes, the surface treatment of steel wire is earlier by the alkali cleaning oil removing with steel wire, through washing, carry out the iron oxide that Steel Wire Surface is removed in pickling with sulfuric acid and hydrochloric acid then, through after the washing, evenly coat scaling powder again on the surface of steel wire; Preheating is by load coil surface treated steel wire to be carried out preheating, and preheat temperature is 500～800 ℃; It is the steel wire through preheating to be passed the holding furnace that aluminium liquid is housed pour into a mould that casting is drawn compound, again through after the crystallizer cooling through the drawing die moulding, aluminium liquid pouring temperature is 750～950 ℃, the mouthpiece heating-up temperature is 800～1000 ℃, the compound wire reduction of area is 8～20%, casting pulling rate degree reduces with the rising of steel wire preheat temperature and aluminium liquid pouring temperature, when wire temperature and temperature of aluminum liquid when the highest, casting pulling rate degree is 10mm/s～14mm/s, when steel wire and temperature of aluminum liquid all drop to when minimum, casting pulling rate degree is 25mm/s～30mm/s.
2. the method for casting and drawing steel-aluminum compounded electrically conductive wire according to claim 1 is characterized in that said post processing mainly comprises finish draw and annealing two procedures, and annealing temperature is 350 ℃ ± 10 ℃, is incubated 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121022A CN1086323C (en) | 1998-11-27 | 1998-11-27 | Technology for casting and drawing steel-aluminum compounded electrically conductive wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121022A CN1086323C (en) | 1998-11-27 | 1998-11-27 | Technology for casting and drawing steel-aluminum compounded electrically conductive wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1255413A CN1255413A (en) | 2000-06-07 |
| CN1086323C true CN1086323C (en) | 2002-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98121022A Expired - Fee Related CN1086323C (en) | 1998-11-27 | 1998-11-27 | Technology for casting and drawing steel-aluminum compounded electrically conductive wire |
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| CN (1) | CN1086323C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113755849A (en) * | 2021-08-03 | 2021-12-07 | 张进辉 | Cast-drawn steel-aluminum composite conductor processing equipment for high-speed rail junction box |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133582B (en) * | 2011-05-04 | 2013-04-24 | 北京科技大学 | Mold/non-mode combined pulling process and device |
| CN102133583A (en) * | 2011-05-04 | 2011-07-27 | 北京科技大学 | Die/dieless integrated drawing process and device |
| CN103213328A (en) * | 2013-04-16 | 2013-07-24 | 南通市万盟铝线有限公司 | Flexible aluminum-clad steel wire and preparation method thereof |
| CN106002101A (en) * | 2016-06-21 | 2016-10-12 | 金锢电气有限公司 | Production method of copper aluminium conducting bar |
| CN106513602A (en) * | 2016-11-16 | 2017-03-22 | 天津炜润达新材料科技有限公司 | Continuous production line technology process of steel wire aluminum |
| CN112404378B (en) * | 2020-12-03 | 2022-08-30 | 山东百斯特铝业科技有限公司 | Processing method of anti-bending aluminum bar composite high-strength steel wire |
| CN115365467A (en) * | 2021-05-21 | 2022-11-22 | 宝山钢铁股份有限公司 | Production device and production method of composite long material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112039A (en) * | 1994-05-14 | 1995-11-22 | 潘代发 | Metal casting and drawing method and apparatus |
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1998
- 1998-11-27 CN CN98121022A patent/CN1086323C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112039A (en) * | 1994-05-14 | 1995-11-22 | 潘代发 | Metal casting and drawing method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113755849A (en) * | 2021-08-03 | 2021-12-07 | 张进辉 | Cast-drawn steel-aluminum composite conductor processing equipment for high-speed rail junction box |
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| CN1255413A (en) | 2000-06-07 |
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