CN104438425B - Method for preparing buses for electrical engineering through taking high-quality aluminum ingots as raw material - Google Patents
Method for preparing buses for electrical engineering through taking high-quality aluminum ingots as raw material Download PDFInfo
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- CN104438425B CN104438425B CN201410653213.4A CN201410653213A CN104438425B CN 104438425 B CN104438425 B CN 104438425B CN 201410653213 A CN201410653213 A CN 201410653213A CN 104438425 B CN104438425 B CN 104438425B
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- aluminium
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Classifications
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- 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
- B21C37/045—Manufacture of wire or bars with particular section or properties
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- 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
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- 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
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- 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
Abstract
The invention discloses a method for preparing buses for electrical engineering through taking high-quality aluminum ingots as a raw material. The method comprises the steps: (1) carrying out up-drawing continuous casting to form aluminum and aluminum-alloy rods, wherein the high-quality aluminum ingots are taken as a raw material, melting and heat insulation are carried out at the temperature of 670-750 DEG C, 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 aluminum and aluminum-alloy buses; (3) drawing. 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 method 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 preparation method 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 transformer 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, aluminium 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 aluminium and aluminium bar bus demand is gradually increased.Compared with copper and copper alloy bus, aluminium 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 aluminium 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 a kind of preparation method of the electrician's bus with high-quality aluminium ingot as raw material, and its technological process is short, energy-efficient, conductance is high, lumber recovery is high, low production cost.
The technical scheme that the present invention takes is as follows, a kind of preparation method of the electrician's bus with high-quality aluminium ingot as raw material, comprises the following steps：1. continuous up-casting aluminium 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 aluminium and aluminium alloy melt are stirred, degasification, with drawing aluminium and aluminium alloy rod in traction link seat disengaging type vacuum.2. continuously extruding aluminum and aluminium bar bus：With aluminium and aluminium alloy rod as raw material, aluminium 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, aluminium and aluminium bar bus are carried out stretching, finishing.
Using aluminium 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 conductance is not less than 62%IACS.
The further setting of the present invention is as follows：
Above-mentioned steps 1. in, described online degasification, stirring, are by removing gas agitating apparatus online, being filled with 99.996% argon gas or nitrogen into aluminium and aluminium alloy melt；By controlled rotation graphite shaft and rotor, the argon gas of metering or nitrogen are pressed in aluminium and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminium and aluminium alloy melt；Source outlet pressure 0.2～0.5MPa, flow 1～1.25Nm3/h；Then with drawing aluminium 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 is 0.09%～0.14%, Si content is 0.12～0.20%, and content of rare earth is 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.
The present invention is had the advantages that using such scheme：（1）Efficiently, energy-conservation, lumber recovery height, production efficiency are high.Using the perfect adaptation of continuous up-casting technology and continual extruding technology, produce aluminium 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, increase substantially width and the quality of bus bar products.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）Conductance is high, 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 conductance for the impurity element, its conductance is not less than 62%IACS.Through continuously extruded, it is changed into recrystallized structure, the dense internal organization of bus for the aluminium 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, wherein 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.
Mark 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 aluminium and aluminium alloy rod；2. continuously extruding aluminum and aluminium bar bus；3. stretch.
1. continuous up-casting aluminium 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, aluminium and aluminium alloy melt are stirred, degasification, with drawing aluminium 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 gas or nitrogen into aluminium and aluminium alloy melt, by controlled rotation graphite shaft and rotor, the argon gas of metering or nitrogen are pressed in aluminium and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminium 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/ that described its aluminium content of high-quality aluminium ingot is not less than 99.65%, Fe/Si（1.3～1.4）, 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 aluminium and aluminium alloy rod as raw material, aluminium and aluminium bar bus are produced using continuously extruded unit, continuous extruder rotating speed is 10～20r/min, bus specification 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 aluminium 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 aluminium and the width of aluminium bar bus can reach 400mm.
3. stretch.Using fully automatic hydraulic drawbench, aluminium and aluminium bar bus are carried out stretching, finishing.Described drawing coefficient λ is 1.077.
Claims (1)
1. a kind of preparation method of the electrician's bus with high-quality aluminium ingot as raw material is it is characterised in that comprise the following steps：
1. continuous up-casting aluminium 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 aluminium and aluminium alloy melt are stirred, degasification, with traction link seat disengaging type vacuum continuous up-casting aluminium and aluminium alloy rod；
2. continuously extruding aluminum and aluminium bar bus：With aluminium and aluminium alloy rod as raw material, aluminium 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, aluminium and aluminium bar bus are carried out stretching, finishing；
Using aluminium 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 conductance is not less than 62%IACS；
Above-mentioned steps 1. in, described online degasification, stirring, are by removing gas agitating apparatus online, being filled with 99.996% argon gas or nitrogen into aluminium and aluminium alloy melt；By controlled rotation graphite shaft and rotor, the argon gas of metering or nitrogen are pressed in aluminium and aluminium alloy melt and are dispersed as micro-bubble so as to be uniformly dispersed in aluminium and aluminium alloy melt；Source outlet pressure 0.2～0.5MPa, flow 1～1.25Nm3/h；Then with drawing aluminium 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 is 0.09%～0.14%, Si content is 0.12～0.20%, and content of rare earth is 0.08%～0.15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653213.4A CN104438425B (en) | 2013-02-27 | 2013-02-27 | Method for preparing buses for electrical engineering through taking high-quality aluminum ingots as raw material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653213.4A CN104438425B (en) | 2013-02-27 | 2013-02-27 | Method for preparing buses for electrical engineering through taking high-quality aluminum ingots as raw material |
| 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 |
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| CN201310061628.8A Division CN103071696B (en) | 2013-02-27 | 2013-02-27 | Production process of electrical aluminum and aluminum alloy buses |
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| CN104438425A CN104438425A (en) | 2015-03-25 |
| CN104438425B true CN104438425B (en) | 2017-02-08 |
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| CN106825091B (en) * | 2017-02-23 | 2018-08-14 | 内蒙古蒙东高新科技城有限公司 | Its application of the method and device therefor of a kind of continuous large plastometric set |
| CN109317532A (en) * | 2018-10-11 | 2019-02-12 | 广东华劲金属型材有限公司 | A kind of preparation method of aluminium bar bus |
| CN112440031B (en) * | 2020-11-23 | 2023-01-10 | 四川大西洋焊接材料股份有限公司 | Copper-manganese-nickel brazing filler metal and preparation method thereof |
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| CN102862027A (en) * | 2012-09-17 | 2013-01-09 | 九星控股集团有限公司 | Continuous production technique of special-shaped hollow current conducting plates for electrolysis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100887759B1 (en) * | 2007-11-12 | 2009-03-12 | 미래특수금속 주식회사 | Method for manufacturing copper clad aluminium busbar |
| US8535971B2 (en) * | 2010-02-12 | 2013-09-17 | Heraeus Precious Metals North America Conshohocken Llc | Method for applying full back surface field and silver busbar to solar cell |
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Patent Citations (6)
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|---|---|---|---|---|
| CN101719527A (en) * | 2009-12-03 | 2010-06-02 | 绍兴市力博电气有限公司 | Production technique of copper strips for solar modules |
| CN102453819A (en) * | 2010-10-26 | 2012-05-16 | 上海中天铝线有限公司 | Manufacture method of medium-strength aluminum alloy wire with electrical conductivity of 59 percent |
| CN102543310A (en) * | 2012-02-20 | 2012-07-04 | 徐高磊 | Process for specially-shaped electrolytic conductive material |
| CN102634695A (en) * | 2012-04-26 | 2012-08-15 | 远东电缆有限公司 | High-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire and production method thereof |
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Inventor after: Sun Tao Inventor after: Zhu Cunge Inventor after: Chen Chengbin Inventor after: Niu Liusuo Inventor after: Zhang Lu Inventor after: Dan Shihe Inventor after: Liu Jincai Inventor after: Chen Yanquan Inventor after: Chen Qiang Inventor after: Chen Chunhua Inventor after: Zhang Li Inventor after: Hou Zhengrong Inventor after: Liu Xiujuan Inventor before: Hu Yan |
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Effective date of registration: 20160928 Address after: 274032 north of Zhonghua East Road, Heze City, Shandong province (opposite bank of China) Applicant after: Heze Power Supply Company, State Grid Shandong Electric Power Co., Ltd. Applicant after: CHENGWU POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER 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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