CN104438426B - Process for producing aluminum and aluminum-alloy buses for electrical engineering - Google Patents
Process for producing aluminum and aluminum-alloy buses for electrical engineering Download PDFInfo
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- CN104438426B CN104438426B CN201410653229.5A CN201410653229A CN104438426B CN 104438426 B CN104438426 B CN 104438426B CN 201410653229 A CN201410653229 A CN 201410653229A CN 104438426 B CN104438426 B CN 104438426B
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- aluminium
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 74
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title abstract description 12
- 238000004870 electrical engineering Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000007872 degassing Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims description 36
- 241001604129 Polydactylus Species 0.000 claims description 27
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 11
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000003064 anti-oxidating effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000009749 continuous casting Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a process for producing aluminum and aluminum-alloy buses for electrical engineering. The process comprises the steps: (1) carrying out up-drawing continuous casting to form aluminum and aluminum-alloy rods, wherein high-quality aluminum ingots are taken as a raw material, an online degassing and stirring device is used for stirring and degassing melt, and a drawing unit is used for carrying out clutch type vacuum up-drawing on the aluminum and aluminum-alloy rods; (2) carrying out continuous extrusion to form the aluminum and aluminum-alloy buses, wherein the aluminum and aluminum-alloy rods are taken as a raw material, and a continuous extrusion unit is adopted to produce the aluminum and aluminum-alloy buses; (3) drawing, wherein a fully-automatic hydraulic drawing machine is adopted to carry out drawing and finishing on the aluminum and aluminum-alloy buses. According to the aluminum and aluminum-alloy buses prepared by adopting the steps, R-state buses have the elongation percentage higher than 25% and the tensile strength higher than 75MPa, and Y-state buses have the elongation percentage higher than 4%, the tensile strength higher than 120Mpa and the electric conductivity not lower than 62% IACS. The process has the advantages of high efficiency, energy saving, high yield, high production efficiency, high product electric conductivity, excellent mechanical properties and the like.
Description
The present invention be Application No. 201310061628.8, the applying date be on 2 27th, 2013, the divisional application of the application for a patent for invention of invention entitled " production technologies of a kind of aluminum for electric engineering and aluminium bar bus ".
Technical field
The invention belongs to technical field of nonferrous metal processing, the production technology of more particularly, to a kind of aluminum for electric engineering and aluminium bar bus.
Background technology
Bus refers to the connection of voltage power distribution equipments at different levels in electric substation, and the connection of the electrical equipment such as transformator and corresponding power distribution equipment, mostly adopts bare conductor or the twisted wire of rectangle or circular cross-section.The effect of bus is to collect, distribute and transmit electric energy.Bus mainly includes copper and copper alloy bus, aluminum and aluminium bar bus two class.With China's electric power and relevant industries fast development, the demand of copper also constantly increases, and because China's copper resource is in short supply, copper valency is higher in addition, both at home and abroad aluminum and aluminium bar bus demand is gradually increased.Compared with copper and copper alloy bus, aluminum and aluminium bar bus have higher safety and reliability, install the advantages such as easier, applied range, energy-conserving and environment-protective.The traditional processing technology of aluminum and aluminium bar bus is melting and casting heating extrusion rolling aligning, the shortcomings of this technique is primarily present technological process length, high energy consumption, lumber recovery is low, production cost is high.
Content of the invention
The present invention provides the production technology of a kind of aluminum for electric engineering and aluminium bar bus, and its technological process is short, energy-efficient, conductivity is high, lumber recovery is high, low production cost.
The technical scheme that the present invention takes is as follows, a kind of aluminum for electric engineering and the production technology of aluminium bar bus, comprise the following steps: 1. continuous up-casting aluminum and aluminium alloy rod: with high-quality aluminium ingot as raw material, melting and heat preservation at 670 DEG C～750 DEG C, using continuous up-casting unit, and warp removes gas agitating apparatus online, and aluminum and aluminium alloy melt are stirred, degasification, with drawing aluminum and aluminium alloy rod in traction link seat disengaging type vacuum.2. continuously extruding aluminum and aluminium bar bus: with aluminum and aluminium alloy rod as raw material, aluminum and aluminium bar bus are produced using continuously extruded unit, continuous extruder rotating speed is 10～20r/min, bus width maximum can reach 400mm, bus extruded velocity: 8～50m/min, batches after cooling down, dry up through the anti-oxidation pipe of vacuum and tank after bus extrusion；The shape and size of appropriate design mould, pad and concave shape pad, concave shape pad is arranged on the top of mould, and pad is arranged on the top of concave shape pad, and concave shape pad is concave shape.3. stretch: using fully automatic hydraulic drawbench, aluminum and aluminium bar bus are carried out stretching, finishing.
Using aluminum and the aluminium bar bus of above-mentioned steps preparation, r state bus percentage elongation is more than 25%, and tensile strength is more than 75mpa, and y state bus percentage elongation is more than 4%, and tensile strength is more than 120mpa, and conductivity is not less than 62%iacs.
The present invention is further provided that
Above-mentioned steps 1. in, described online degasification, stirring, are by removing gas agitating apparatus online, being filled with 99.996% argon or nitrogen into aluminum and aluminium alloy melt；By controlled rotation graphite shaft and rotor, the argon of metering or nitrogen are pressed in aluminum and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminum and aluminium alloy melt；Source outlet pressure 0.2～0.5mpa, flow 1～1.25nm3/h；Then with drawing aluminum and aluminium alloy rod in traction link seat disengaging type vacuum, draw bar speed 700～1200mm/min, drawing shank diameter is ф 12～ф 40mm.
Above-mentioned steps 1. in, its aluminium content of high-quality aluminium ingot be not less than 99.65%, fe/si be 1/(1.3～1.4), fe content be 0.09%～0.14%, si content be 0.12～0.20%, content of rare earth be 0.08%～0.15%.
Above-mentioned steps 2. in, the extruding working body of continuously extruded unit is formed by extruding working body panel, plug, forming room, pad, concave shape pad, mould and cover plate；Pad, concave shape pad, mould are according to top-down assembled in sequence；Concave shape gasket design is concave shape；Pad, concave shape pad are arranged on the top of mould.
Above-mentioned steps 3. in, described drawing coefficient λ is 1.05～1.2.
Using such scheme, the present invention has the advantages that (1) is efficient, energy-conservation, lumber recovery are high, production efficiency is high.Using the perfect adaptation of continuous up-casting technology and continual extruding technology, produce aluminum and aluminium bar bus, compared with traditional handicraft, production procedure is shortened, and decreases the operation of ingot casting heating, saves substantial amounts of energy resource consumption.The serialization of bus production can be realized simultaneously using continual extruding technology, decrease during traditional extrusion process produces and there is the waste of material that crop truncates, lumber recovery and production efficiency are high.(2) using unique mould and gasket design, width and the quality of bus bar products are increased substantially.The present invention passes through shape and the thickness of appropriate design mould pad, improves the uniformity of flowing, solves big ratio and a big flakiness ratio expressing technique difficult problem, can produce the bus that width is 400mm.(3) conductivity height, excellent in mechanical performance.By the chemical composition of reasonably optimizing bus, control the ratio of fe/si, and add rare earth element, reduce the impact to conductivity for the impurity element, its conductivity is not less than 62%iacs.Through continuously extruded, it is changed into recrystallized structure, the dense internal organization of bus for the aluminum of as cast condition and aluminium alloy rod simultaneously, excellent in mechanical performance, wherein r state bus percentage elongation are more than 25%, and tensile strength is more than 75mpa, y state bus percentage elongation is more than 4%, and tensile strength is more than 120mpa.
Brief description
Fig. 1 is the production technological process of a kind of aluminum for electric engineering of the present invention and aluminium bar bus；
Fig. 2 extrudes working body structure chart for the present invention；
Fig. 3 is the structural representation of inventive die and pad.
Labelling in above-mentioned accompanying drawing is as follows: extruding working body panel 10, plug 11, forming room 12, pad 13, concave shape pad 14, mould 15, cover plate 16.
Specific embodiment
The present invention adopts process program flow process as follows: 1. continuous up-casting aluminum and aluminium alloy rod；2. continuously extruding aluminum and aluminium bar bus；3. stretch.
1. continuous up-casting aluminum and aluminium alloy rod.
With high-quality aluminium ingot as raw material, melting and heat preservation at 710 DEG C～730 DEG C, and through online depassing unit, aluminum and aluminium alloy melt are stirred, degasification, with drawing aluminum and aluminium alloy rod in traction link seat disengaging type vacuum.
Described online degasification, stirring, by removing gas agitating apparatus online, it is filled with 99.996% argon or nitrogen into aluminum and aluminium alloy melt, by controlled rotation graphite shaft and rotor, the argon of metering or nitrogen are pressed in aluminum and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminum and aluminium alloy melt；Source outlet pressure 0.2～0.5mpa, flow 1～1.25nm3/h；Then use traction link seat disengaging type vacuum up-casting oxygen-free copper rod, draw bar speed 700～1200mm/min, drawing shank diameter is ф 30mm.
It is 1/(1.3～1.4 that described its aluminium content of high-quality aluminium ingot is not less than 99.65%, fe/si), fe content is 0.09%～0.14%, si content is 0.12～0.20%, and content of rare earth is 0.08%～0.15%.
2. continuously extruding aluminum and aluminium bar bus.
With ф 30mm aluminum and aluminium alloy rod as raw material, aluminum and aluminium bar bus are produced using continuously extruded unit, continuous extruder rotating speed is 10～20r/min, bus specification is to 19.2 × 202mm, bus extruded velocity: 8～50m/min, batches after cooling down, dry up through the anti-oxidation pipe of vacuum and tank after bus extrusion.
Described continuously extruding aluminum and aluminium bar bus include the shape and size of appropriate design mould and pad, and concave shape pad is arranged on the top of mould, and concave shape pad is concave shape.
The present invention, in order to improve uniformity and the mold use life-span of flowing, improve the processability of aluminum and aluminium bar bus, improves forming room 12, the structure of concave shape pad 14.As shown in Figure 2 and Figure 3, the unique mould of the present invention and forming room's design, are formed by extruding working body panel 10, plug 11, forming room 12, pad 13, concave shape pad 14, mould 15 and cover plate 16 including extruding working body.Pad 13, concave shape pad 14, mould 15 are designed as concave shape according to top-down assembled in sequence, concave shape pad 14.Pad 13, concave shape pad 14 are arranged on the top of mould 15 by the present invention, increased squeezing passage, the shape of appropriate design concave shape pad 14, effectively reduce the difference of edge and middle part flowing velocity during extrusion molding.By above-mentioned improvement, the present invention produces aluminum and the width of aluminium bar bus can reach 400mm.
3. stretch.Using fully automatic hydraulic drawbench, aluminum and aluminium bar bus are carried out stretching, finishing.Described drawing coefficient λ is 1.077.
Claims (1)
1. the production technology of a kind of aluminum for electric engineering and aluminium bar bus is it is characterised in that comprise the following steps:
1. continuous up-casting aluminum and aluminium alloy rod: with high-quality aluminium ingot as raw material, using continuous up-casting unit, and warp removes gas agitating apparatus online, and aluminum and aluminium alloy melt are stirred, degasification, with traction link seat disengaging type vacuum continuous up-casting aluminum and aluminium alloy rod；
2. continuously extruding aluminum and aluminium bar bus: with aluminum and aluminium alloy rod as raw material, aluminum and aluminium bar bus are produced using continuously extruded unit；Continuous extruder rotating speed is 10～20r/min, and the width maximum of bus can reach 400mm, bus extruded velocity: 8～50m/min, batches after cooling down, dry up through the anti-oxidation pipe of vacuum and tank after bus extrusion；The shape and size of appropriate design mould, pad and concave shape pad, concave shape pad is arranged on the top of mould, and pad is arranged on the top of concave shape pad, and concave shape pad is concave shape；
3. stretch: using fully automatic hydraulic drawbench, aluminum and aluminium bar bus are carried out stretching, finishing；
Using aluminum and the aluminium bar bus of above-mentioned steps preparation, r state bus percentage elongation is more than 25%, and tensile strength is more than 75mpa, and y state bus percentage elongation is more than 4%, and tensile strength is more than 120mpa, and conductivity is not less than 62%iacs；
Above-mentioned steps 1. in, its aluminium content of high-quality aluminium ingot be not less than 99.65%, fe/si be 1/(1.3～1.4), fe content be 0.09%～0.14%, si content be 0.12～0.20%, content of rare earth be 0.08%～0.15%；
Above-mentioned steps 1. in, described online degasification, stirring, are by removing gas agitating apparatus online, being filled with 99.996% argon or nitrogen into aluminum and aluminium alloy melt；By controlled rotation graphite shaft and rotor, the argon of metering or nitrogen are pressed in aluminum and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminum and aluminium alloy melt；Source outlet pressure 0.2～0.5mpa, flow 1～1.25nm3/h；Then with drawing aluminum and aluminium alloy rod in traction link seat disengaging type vacuum, draw bar speed 700～1200mm/min, drawing shank diameter is ф 12～ф 40mm；
Above-mentioned steps 2. in, the extruding working body of continuously extruded unit is formed by extruding working body panel (10), plug (11), forming room (12), pad (13), concave shape pad (14), mould (15) and cover plate (16)；Pad (13), concave shape pad (14), mould (15) are according to top-down assembled in sequence；Concave shape pad (14) is designed as concave shape；Pad (13), concave shape pad (14) are arranged on the top of mould (15)；
Above-mentioned steps 3. in, drawing coefficient λ be 1.05～1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653229.5A CN104438426B (en) | 2013-02-27 | 2013-02-27 | Process for producing aluminum and aluminum-alloy buses for electrical engineering |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653229.5A CN104438426B (en) | 2013-02-27 | 2013-02-27 | Process for producing aluminum and aluminum-alloy buses for electrical engineering |
| CN201310061628.8A CN103071696B (en) | 2013-02-27 | 2013-02-27 | Production process of electrical aluminum and aluminum alloy buses |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310061628.8A Division CN103071696B (en) | 2013-02-27 | 2013-02-27 | Production process of electrical aluminum and aluminum alloy buses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104438426A CN104438426A (en) | 2015-03-25 |
| CN104438426B true CN104438426B (en) | 2017-01-18 |
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| CN201410653229.5A Active CN104438426B (en) | 2013-02-27 | 2013-02-27 | Process for producing aluminum and aluminum-alloy buses for electrical engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100337288C (en) * | 2005-06-27 | 2007-09-12 | 江阴市电工合金有限公司 | Oxygen-free copper generatrix and its preparing method |
| KR100887759B1 (en) * | 2007-11-12 | 2009-03-12 | 미래특수금속 주식회사 | Method for manufacturing copper clad aluminium busbar |
| CN101719527B (en) * | 2009-12-03 | 2011-10-26 | 绍兴市力博电气有限公司 | Production technique of copper strips for solar modules |
| CN101708510B (en) * | 2009-12-03 | 2011-05-04 | 绍兴市力博电气有限公司 | Processing technology for processing high-purity high-conductivity oxygen-free copper bar |
| JP2012241254A (en) * | 2011-05-23 | 2012-12-10 | Yazaki Corp | Method of manufacturing aluminum lead wire and electric wire |
| CN102262924A (en) * | 2011-06-09 | 2011-11-30 | 山东中佳新材料有限公司 | Large-section oxygen-free copper busbar and preparation method |
| CN102543310A (en) * | 2012-02-20 | 2012-07-04 | 徐高磊 | Process for specially-shaped electrolytic conductive material |
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| CB02 | Change of applicant information |
Inventor after: Song Yi Inventor after: Chu Xinhui Inventor after: Chen Xiaobai Inventor after: Chen Chun Inventor after: Xu Zenglong Inventor after: Huang Xiaowei Inventor after: Jiang Suhong Inventor before: Hu Yan |
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Effective date of registration: 20161215 Address after: 100000 Xicheng District, Chang'an Avenue, No. 86, Applicant after: State Power Networks Co Applicant after: STATE GRID JIANGSU ELECTRIC POWER COMPANY Applicant after: State Grid Electric Power Company of Jiangsu province Yancheng City Dafeng district power supply company Applicant after: DAFENG LONGSHENG INDUSTRY CO., LTD. Address before: 239001 room No. 1, science and technology innovation center, No. 82 West Garden Road, Anhui, Chuzhou, China Applicant before: CHUZHOU HUAZUN ELECTRICAL SCIENCE & TECHNOLOGY CO., LTD. |
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