CN104307918B - Aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus - Google Patents

Aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus Download PDF

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Publication number
CN104307918B
CN104307918B CN201410654676.2A CN201410654676A CN104307918B CN 104307918 B CN104307918 B CN 104307918B CN 201410654676 A CN201410654676 A CN 201410654676A CN 104307918 B CN104307918 B CN 104307918B
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China
Prior art keywords
aluminium
bus
pad
mould
raw material
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Expired - Fee Related
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CN201410654676.2A
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Chinese (zh)
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CN104307918A (en
Inventor
徐岩
马丽
刘鹏
宋成清
于少科
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Jiaozhou Power Supply Company State Grid Shandong Electric Power Co
State Grid Corp of China SGCC
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Jiaozhou Power Supply Company State Grid Shandong Electric Power Co
State Grid Corp of China SGCC
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04Manufacture 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C26/00Rams or plungers; Discs therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14Plants for continuous casting
    • B22D11/145Plants for continuous casting for upward casting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Of Metal (AREA)

Abstract

The invention belongs to aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus. The present invention includes: 1. continuous up-casting aluminium and aluminium alloy rod; Wherein, taking high-quality aluminium ingot as raw material, melting and heat preservation at 670 DEG C~750 DEG C, through online except gas agitating apparatus to melt stir, degasification. 2. continuously extruding aluminum and aluminium bar bus; Wherein, taking aluminium and aluminium alloy rod as raw material, adopt continuously extruded unit to produce aluminium and aluminium bar bus. 3. stretch. Wherein, adopt fully automatic hydraulic drawbench, by aluminium and aluminium bar bus stretch, finishing. The aluminium and the aluminium bar bus that adopt above-mentioned steps to prepare, R state bus percentage elongation is greater than 25%, and tensile strength is greater than 75MPa, and wherein Y state bus percentage elongation is greater than 4%, and tensile strength is greater than 120Mpa, and conductance is not less than 62%IACS. The advantage such as that the present invention has is efficient, energy-conservation, lumber recovery is high, production efficiency is high, product conductance is high, mechanical property is excellent.

Description

Aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus
The present invention is the divisional application of the application for a patent for invention that application number is 201310061628.8, the applying date is on February 27th, 2013, denomination of invention is " production technology of a kind of aluminum for electric engineering and aluminium bar bus ".
Technical field
The invention belongs to technical field of nonferrous metal processing, relate in particular to the production technology of 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 collect, distribute and transmit electric energy. Bus mainly comprises copper and copper alloy bus, aluminium and aluminium bar bus two classes. Along with China's electric power and relevant industries fast development, the demand of copper also constantly increases, and due to China's copper resource scarcity, copper valency is higher in addition, both at home and abroad aluminium and aluminium bar bus demand is increased gradually. Compared with copper and copper alloy bus, aluminium and aluminium bar bus have higher safety and reliability, the advantages such as easier, applied range, energy-conserving and environment-protective are installed. The traditional processing technology of aluminium and aluminium bar bus is melting and casting-heating-extruding-rolling-aligning, and this technique mainly exists the shortcomings such as technological process is long, energy consumption is high, lumber recovery is low, production cost is high.
Summary of the invention
The invention provides a kind of aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus, its technological process is short, energy-efficient, conductance is high, lumber recovery is high, production cost is low.
The technical scheme that the present invention takes is as follows, a kind of aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus, comprise the following steps: 1. continuous up-casting aluminium and aluminium alloy rod: taking high-quality aluminium ingot as raw material, melting and heat preservation at 670 DEG C~750 DEG C, adopt continuous up-casting unit, and through online except gas agitating apparatus, to aluminium and aluminium alloy melt stir, degasification, draw aluminium and aluminium alloy rod with drawing in unit disengaging type vacuum. 2. continuously extruding aluminum and aluminium bar bus: taking aluminium and aluminium alloy rod as raw material, adopt continuously extruded unit to produce aluminium and aluminium bar bus, continuous extruder rotating speed is 10~20r/min, bus width maximum can reach 400mm, bus extruded velocity: 8~50m/min, bus is cooling through the anti-oxidation pipe of vacuum and tank after extruding, batch after drying up; The shape and size of appropriate design mould and mould pad, mould pad is arranged on the top of mould. 3. stretch: adopt fully automatic hydraulic drawbench, by aluminium and aluminium bar bus stretch, finishing.
The aluminium and the aluminium bar bus that adopt above-mentioned steps to prepare, R state bus percentage elongation is greater than 25%, and tensile strength is greater than 75MPa, and Y state bus percentage elongation is greater than 4%, and tensile strength is greater than 120Mpa, and conductance is not less than 62%IACS.
Of the present invention further arrange as follows:
Above-mentioned steps 1. in, described online degasification, stirring, be by online except gas agitating apparatus, in aluminium and aluminium alloy melt, be filled with 99.996% argon gas or nitrogen; 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, it is dispersed in aluminium and aluminium alloy melt uniformly; Source of the gas outlet pressure 0.2~0.5MPa, flow 1~1.25Nm3/ h; Then with drawing aluminium and aluminium alloy rod in traction unit disengaging type vacuum, draw bar speed 700~1200mm/min, drawing shank diameter is Ф 12~Ф 40mm.
Above-mentioned steps 1. in, it is 1/(1.3~1.4 that its aluminium content of high-quality aluminium ingot is not less than 99.65%, Fe/Si), Fe content is that 0.09%~0.14%, Si content is 0.12~0.20%, content of rare earth is 0.08%~0.15%.
Above-mentioned steps 2. in, the extruding working body of continuously extruded unit forms by pushing 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 adopts such scheme to have following beneficial effect: (1) is efficient, energy-conservation, lumber recovery is high, production efficiency is high. Utilize the perfect adaptation of continuous up-casting technology and continuously extruded technology, produce aluminium and aluminium bar bus, compared with traditional handicraft, production procedure is shortened, and has reduced the operation of ingot casting heating, has saved a large amount of energy resource consumptions. Adopt continuously extruded technology can realize the serialization that bus is produced simultaneously, reduced the waste of material that exists crop to truncate in conventional extruded explained hereafter, lumber recovery and production efficiency are high. (2) adopt unique mould and mould gasket design, increase substantially width and the quality of bus bar products. The present invention, by shape and the thickness of appropriate design mould pad, improves mobile uniformity, has solved large ratio and a large flakiness ratio expressing technique difficult problem, can produce the bus that width is 400mm. (3) conductance is high, mechanical property is excellent. By the chemical composition of reasonably optimizing bus, control the ratio of Fe/Si, and add rare earth element, reduce the impact of impurity element on conductance, its conductance is not less than 62%IACS. The aluminium of as cast condition and aluminium alloy rod are through continuously extruded simultaneously, and it changes recrystallized structure into, the dense internal organization of bus, mechanical property excellence, wherein R state bus percentage elongation is greater than 25%, and tensile strength is greater than 75MPa, wherein Y state bus percentage elongation is greater than 4%, and tensile strength is greater than 120MPa.
Brief description of the drawings
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 is that the present invention pushes working body structure chart;
Fig. 3 is the structural representation of mould of the present invention 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.
Detailed description of the invention
Adopting process scheme flow process of the present invention is 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.
Taking high-quality aluminium ingot as raw material, melting and heat preservation at 710 DEG C~730 DEG C, and through refine equipment on line, to aluminium and aluminium alloy melt stir, degasification, with drawing aluminium and aluminium alloy rod in traction unit disengaging type vacuum.
Described online degasification, stirring, by the online gas agitating apparatus that removes, in aluminium and aluminium alloy melt, be filled with 99.996% argon gas or nitrogen, 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, it is dispersed in aluminium and aluminium alloy melt uniformly; Source of the gas outlet pressure 0.2~0.5MPa, flow 1~1.25Nm3/ h; Then with drawing oxygen-free copper bar in traction unit disengaging type vacuum, draw bar speed 700~1200mm/min, drawing shank diameter is Ф 30mm.
It is 1/(1.3~1.4 that its aluminium content of described high-quality aluminium ingot is not less than 99.65%, Fe/Si), Fe content is that 0.09%~0.14%, Si content is 0.12~0.20%, content of rare earth is 0.08%~0.15%.
2. continuously extruding aluminum and aluminium bar bus.
Taking Ф 30mm aluminium and aluminium alloy rod as raw material, adopt continuously extruded unit to produce aluminium and aluminium bar bus, continuous extruder rotating speed is 10~20r/min, bus specification to 19.2 × 202mm, bus extruded velocity: 8~50m/min, bus is cooling through the anti-oxidation pipe of vacuum and tank after extruding, batch after drying up.
Described continuously extruding aluminum and aluminium bar bus comprise the shape and size of appropriate design mould and mould pad, and mould pad is arranged on the top of mould, and concave shape pad is concave shape.
The present invention is in order to improve mobile uniformity and the service life of mould, improve the processability of aluminium and aluminium bar bus, improved the structure of forming room 12, concave shape pad 14. As shown in Figure 2 and Figure 3, the mould of uniqueness of the present invention and forming room's design, comprise that extruding working body forms by pushing 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, and concave shape pad 14 is designed to concave shape. The present invention is arranged on pad 13, concave shape pad 14 on the top of mould 15, has increased squeezing passage, the shape of appropriate design concave shape pad 14, the difference of limit portion and middle part flowing velocity while effectively reducing extrusion modling. By above-mentioned improvement, the width that the present invention produces aluminium and aluminium bar bus can reach 400mm.
3. stretch. Adopt fully automatic hydraulic drawbench, by aluminium and aluminium bar bus stretch, finishing. Described drawing coefficient λ is 1.077.

Claims (1)

1. a production technology for the aluminum for electric engineering taking high-quality aluminium ingot as raw material and aluminium bar bus, is characterized in that comprising the following steps:
1. continuous up-casting aluminium and aluminium alloy rod: taking high-quality aluminium ingot as raw material, melting and heat preservation at 670 DEG C~750 DEG C, adopts continuous up-casting unit, and through the online gas agitating apparatus that removes, to aluminium and aluminium alloy melt stir, degasification, with traction unit disengaging type vacuum continuous up-casting aluminium and aluminium alloy rod;
2. continuously extruding aluminum and aluminium bar bus: taking aluminium and aluminium alloy rod as raw material, adopt continuously extruded unit to produce aluminium and aluminium bar bus; Continuous extruder rotating speed is 10~20r/min, and the width maximum of bus can reach 400mm, bus extruded velocity: 8~50m/min, and bus is cooling through the anti-oxidation pipe of vacuum and tank after extruding, batch after drying up; The shape and size of appropriate design mould and mould pad, mould pad is arranged on the top of mould;
3. stretch: adopt fully automatic hydraulic drawbench, by aluminium and aluminium bar bus stretch, finishing;
The aluminium and the aluminium bar bus that adopt above-mentioned steps to prepare, R state bus percentage elongation is greater than 25%, and tensile strength is greater than 75MPa, and Y state bus percentage elongation is greater than 4%, and tensile strength is greater than 120Mpa, and conductance is not less than 62%IACS;
Above-mentioned steps 1. in, described online degasification, stirring, be by online except gas agitating apparatus, in aluminium and aluminium alloy melt, be filled with 99.996% argon gas or nitrogen; 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, it is dispersed in aluminium and aluminium alloy melt uniformly; Source of the gas outlet pressure 0.2~0.5MPa, flow 1~1.25Nm3/ h; Then with drawing aluminium and aluminium alloy rod in traction unit disengaging type vacuum, draw bar speed 700~1200mm/min, drawing shank diameter is Ф 12~Ф 40mm;
Above-mentioned steps 1. in, it is 1/(1.3~1.4 that its aluminium content of high-quality aluminium ingot is not less than 99.65%, Fe/Si), Fe content is that 0.09%~0.14%, Si content is 0.12~0.20%, content of rare earth is 0.08%~0.15%;
Above-mentioned steps 2. in, the extruding working body of continuously extruded unit forms by pushing 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 to concave shape; Pad (13), concave shape pad (14) are arranged on the top of mould (15);
Above-mentioned steps 3. in, drawing coefficient λ is 1.05~1.2.
CN201410654676.2A 2013-02-27 2013-02-27 Aluminum for electric engineering taking high-quality aluminium ingot as raw material and the production technology of aluminium bar bus Expired - Fee Related CN104307918B (en)

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CN103730203A (en) * 2013-12-26 2014-04-16 远东电缆有限公司 Composite core high-conductivity duralumin conductor and manufacturing method thereof
CN106024092A (en) * 2016-06-02 2016-10-12 昆山维开安电子科技有限公司 Busbar used for new energy automobile
CN106098246A (en) * 2016-06-16 2016-11-09 山东建筑大学 The method that nanometer high-strength copper lenticular wire is prepared in continuous ECAP drawing is drawn on a kind of
CN108393613A (en) * 2017-02-07 2018-08-14 湖南德润有色焊材科技有限公司 A kind of scandium aluminium composite alloy welding wire production system
CN109014510A (en) * 2018-08-27 2018-12-18 天津市白津生焊接中心 Improve the welding method for sending power transformation tube type bus weld seam conductivity
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
CN110026443B (en) * 2019-05-31 2021-08-27 深圳市点金贵金属精炼有限公司 Equipment for preparing metal wire

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CN102543310A (en) * 2012-02-20 2012-07-04 徐高磊 Process for specially-shaped electrolytic conductive material
CN102855955A (en) * 2011-06-30 2013-01-02 东莞市东兴铝材制造有限公司 Convergence aluminum bar and preparation method thereof

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CN1052905A (en) * 1989-12-27 1991-07-10 沈阳铝材厂沈阳黄金学院 The production method of high strength, high-conductivity aluminum alloy and pipe bus thereof
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CN102543310A (en) * 2012-02-20 2012-07-04 徐高磊 Process for specially-shaped electrolytic conductive material

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