CN104307920A - Method for manufacturing aluminum and aluminum alloy bus for electricians - Google Patents

Method for manufacturing aluminum and aluminum alloy bus for electricians Download PDF

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Publication number
CN104307920A
CN104307920A CN201410654782.0A CN201410654782A CN104307920A CN 104307920 A CN104307920 A CN 104307920A CN 201410654782 A CN201410654782 A CN 201410654782A CN 104307920 A CN104307920 A CN 104307920A
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China
Prior art keywords
bus
alalloy
aluminum
pad
bar
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Application number
CN201410654782.0A
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Chinese (zh)
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CN104307920B (en
Inventor
胡妍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Baijin Aluminium Industry Co Ltd
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Chuzhou Huazun Electrical Technology Co Ltd
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Priority to CN201410654782.0A priority Critical patent/CN104307920B/en
Priority claimed from CN201310061628.8A external-priority patent/CN103071696B/en
Publication of CN104307920A publication Critical patent/CN104307920A/en
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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
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • 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
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • 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

Abstract

The invention relates to a method for manufacturing an aluminum and aluminum alloy bus for electricians. The method includes the steps that (1) continuous casting aluminum and aluminum alloy poles are upwards pulled, wherein high-quality aluminum pigs serve as raw materials, stirring and degassing are carried out on melt through an on-line degassing and stirring device, and the aluminum and aluminum alloy poles are upwards pulled through a pulling machine in a clutch and vacuum mode; (2) the aluminum and aluminum alloy bus is continuously extruded, wherein the aluminum and aluminum alloy poles serve as raw materials, and the aluminum and aluminum alloy bus is produced through a continuous extrusion unit; (3) stretching is carried out. According to the aluminum and aluminum alloy bus manufactured through the steps, the R-state bus elongation is larger than 25%, and the strength of extension is larger than 75 MPa; the Y-state bus elongation is larger than 4%, and the strength of extension is larger than 120 MPa; the electric conductivity is larger than or equal to 62% of IACS. The method has the advantages of being efficient, high in yield, high in work efficiency, high in electric conductivity of products and excellent in mechanical property, saving energy and the like.

Description

The preparation method of aluminum for electric engineering and aluminium bar bus
The divisional application that the present invention is application number is 201310061628.8, the applying date is on February 27th, 2013, denomination of invention is the application for a patent for invention of " 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, particularly relate to the preparation method of a kind of aluminum for electric engineering and aluminium bar bus.
Background technology
Bus refers to the connection of voltage power distribution equipment 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 collects, distributes and transmit electric energy.Bus mainly comprises Copper and its alloy bus, Al and Alalloy bus two class.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, increases gradually both at home and abroad to Al and Alalloy bus demand.Compared with Copper and its alloy bus, Al and Alalloy bus has higher safety and reliability, installs the advantages such as easier, applied range, energy-conserving and environment-protective.The traditional processing technology of Al and Alalloy 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 the preparation method of a kind of aluminum for electric engineering and 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, the preparation method of a kind of aluminum for electric engineering and aluminium bar bus, comprise the following steps: 1. continuous up-casting Al and Alalloy bar: with high-quality aluminium ingot for raw material, melting and heat preservation at 670 DEG C ~ 750 DEG C, adopt continuous up-casting unit, and warp is online except gas agitating apparatus, stirs Al and Alalloy melt, degasification, draws Al and Alalloy bar with in traction link seat disengaging type vacuum.2. continuously extruding aluminum and aluminium bar bus: with Al and Alalloy bar for raw material, continuously extruded unit is adopted to produce Al and Alalloy bus, continuous extruder rotating speed is 10 ~ 20r/min, bus width is maximum reaches 400mm, bus extruded velocity: 8 ~ 50m/min, bus extrude after through the anti-oxidation pipe of vacuum and tank cooling, dry up after batch; The shape and size of appropriate design mould and pad, pad is arranged on the top of mould, and pad is concave shape.3. stretch: adopt fully automatic hydraulic drawbench, Al and Alalloy bus carried out stretch, finishing.
Adopt Al and Alalloy bus prepared by above-mentioned steps, 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.
Of the present invention further arrange as follows:
Above-mentioned steps 1. in, described online degasification, stirring, be by online except gas agitating apparatus, be filled with argon gas or the nitrogen of 99.996% in Al and Alalloy melt; By controlled rotation graphite shaft and rotor, by being dispersed as micro-bubble in the argon gas of metering or nitrogen press-in Al and Alalloy melt, it is made to be dispersed in Al and Alalloy melt uniformly; Source outlet pressure 0.2 ~ 0.5MPa, flow 1 ~ 1.25Nm 3/ h; Then draw Al and Alalloy bar with 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, it be 0.09% ~ 0.14%, Si content is 0.12 ~ 0.20% that its aluminium content of high-quality aluminium ingot is not less than 99.65%, Fe content, and content of rare earth is 0.08% ~ 0.15%.
Above-mentioned steps 2. in, the extruding working body of continuously extruded unit forms 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 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 continual extruding technology, produce Al and Alalloy bus, compared with traditional handicraft, production procedure is shortened, and decreases the operation of ingot casting heating, saves a large amount of energy resource consumptions.The serialization simultaneously adopting continual extruding technology can realize bus to produce, decreases during traditional extrusion process is produced and there is the waste of material that crop truncates, lumber recovery and production efficiency high.(2) adopt 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 large ratio and a big flakiness ratio expressing technique difficult problem, can produce the bus that width is 400mm.(3) high, the excellent in mechanical performance of conductance.By the chemical composition of reasonably optimizing bus, control Fe/Si ratio, and add rare earth element, reduce impurity element to the impact of conductance, its conductance is not less than 62%IACS.The Al and Alalloy bar of as cast condition is through continuously extruded simultaneously, and it changes recrystallized structure into, the dense internal organization of bus, excellent in mechanical performance, 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.
Accompanying drawing explanation
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 extrudes 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
The present invention adopts process program flow process as follows: 1. continuous up-casting Al and Alalloy bar; 2. continuously extruding aluminum and aluminium bar bus; 3. stretch.
1. continuous up-casting Al and Alalloy bar.
With high-quality aluminium ingot for raw material, melting and heat preservation at 710 DEG C ~ 730 DEG C, and through refine equipment on line, Al and Alalloy melt is stirred, degasification, draw Al and Alalloy bar with in traction link seat disengaging type vacuum.
Described online degasification, stirring, by removing gas agitating apparatus online, argon gas or the nitrogen of 99.996% is filled with in Al and Alalloy melt, by controlled rotation graphite shaft and rotor, by being dispersed as micro-bubble in the argon gas of metering or nitrogen press-in Al and Alalloy melt, it is made to be dispersed in Al and Alalloy melt uniformly; Source outlet pressure 0.2 ~ 0.5MPa, flow 1 ~ 1.25Nm 3/ 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 0.09% ~ 0.14%, Si content is 0.12 ~ 0.20% that its aluminium content of described high-quality aluminium ingot is not less than 99.65%, Fe content, and content of rare earth is 0.08% ~ 0.15%.
2. continuously extruding aluminum and aluminium bar bus.
With Ф 30mm Al and Alalloy bar for raw material, continuously extruded unit is adopted to produce Al and Alalloy bus, continuous extruder rotating speed is 10 ~ 20r/min, bus specification is to 19.2 × 202mm, bus extruded velocity: 8 ~ 50m/min, bus extrude after through the anti-oxidation pipe of vacuum and tank cooling, dry up after batch.
Described continuously extruding aluminum and aluminium bar bus comprise the shape and size of appropriate design mould and pad, and pad is arranged on the top of mould, and pad is concave shape.
The present invention, in order to improve uniformity and the mold use life-span of flowing, improves the processability of Al and Alalloy bus, improves 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 extruding working body and form 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, and concave shape pad 14 is designed to concave shape.Pad 13, concave shape pad 14 are arranged on the top of mould 15 by the present invention, add squeezing passage, the shape of appropriate design concave shape pad 14, the difference of edge and middle part flowing velocity when effectively reducing extruded.By above-mentioned improvement, the width that the present invention produces Al and Alalloy bus can reach 400mm.
3. stretch.Adopt fully automatic hydraulic drawbench, Al and Alalloy bus carried out stretch, finishing.Described drawing coefficient λ is 1.077.

Claims (1)

1. a preparation method for aluminum for electric engineering and aluminium bar bus, is characterized in that comprising the following steps:
1. continuous up-casting Al and Alalloy bar: with high-quality aluminium ingot for raw material, adopts continuous up-casting unit, and warp is online except gas agitating apparatus, stirs Al and Alalloy melt, degasification, with traction link seat disengaging type vacuum continuous up-casting Al and Alalloy bar;
2. continuously extruding aluminum and aluminium bar bus: with Al and Alalloy bar for raw material, adopts continuously extruded unit to produce Al and Alalloy bus; Continuous extruder rotating speed is 10 ~ 20r/min, and the width of bus is maximum reaches 400mm, bus extruded velocity: 8 ~ 50m/min, bus extrude after through the anti-oxidation pipe of vacuum and tank cooling, dry up after batch; The shape and size of appropriate design mould and pad, pad is arranged on the top of mould, and pad is concave shape;
3. stretch: adopt fully automatic hydraulic drawbench, Al and Alalloy bus carried out stretch, finishing;
Adopt Al and Alalloy bus prepared by above-mentioned steps, 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;
Above-mentioned steps 1. in, described online degasification, stirring, be by online except gas agitating apparatus, be filled with argon gas or the nitrogen of 99.996% in Al and Alalloy melt; By controlled rotation graphite shaft and rotor, by being dispersed as micro-bubble in the argon gas of metering or nitrogen press-in Al and Alalloy melt, it is made to be dispersed in Al and Alalloy melt uniformly; Source outlet pressure 0.2 ~ 0.5MPa, flow 1 ~ 1.25Nm 3/ h; Then draw Al and Alalloy bar with 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 forms 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 to concave shape; Pad (13), concave shape pad (14) are arranged on the top of mould (15).
CN201410654782.0A 2013-02-27 2013-02-27 Aluminum for electric engineering and the preparation method of aluminium bar bus Active CN104307920B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410654782.0A CN104307920B (en) 2013-02-27 2013-02-27 Aluminum for electric engineering and the preparation method of aluminium bar bus

Applications Claiming Priority (2)

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CN201410654782.0A CN104307920B (en) 2013-02-27 2013-02-27 Aluminum for electric engineering and the preparation method of aluminium bar bus
CN201310061628.8A CN103071696B (en) 2013-02-27 2013-02-27 Production process of electrical aluminum and aluminum alloy buses

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CN104307920B CN104307920B (en) 2017-03-08

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0857533A (en) * 1994-08-17 1996-03-05 Mitsubishi Materials Corp Clad bar and its manufacture
KR100887759B1 (en) * 2007-11-12 2009-03-12 미래특수금속 주식회사 Method for manufacturing copper clad aluminium busbar
CN101447260A (en) * 2008-12-31 2009-06-03 中铁建电气化局集团有限公司 Method for preparing contact wires and pole blanks
CN101708510A (en) * 2009-12-03 2010-05-19 绍兴市力博电气有限公司 Processing technology for processing high-purity high-conductivity oxygen-free copper bar
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
CN102329999A (en) * 2011-07-30 2012-01-25 湖南晟通科技集团有限公司 Manufacture method of electroconductive aluminum alloy section
CN102543310A (en) * 2012-02-20 2012-07-04 徐高磊 Process for specially-shaped electrolytic conductive material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0857533A (en) * 1994-08-17 1996-03-05 Mitsubishi Materials Corp Clad bar and its manufacture
KR100887759B1 (en) * 2007-11-12 2009-03-12 미래특수금속 주식회사 Method for manufacturing copper clad aluminium busbar
CN101447260A (en) * 2008-12-31 2009-06-03 中铁建电气化局集团有限公司 Method for preparing contact wires and pole blanks
CN101708510A (en) * 2009-12-03 2010-05-19 绍兴市力博电气有限公司 Processing technology for processing high-purity high-conductivity oxygen-free copper bar
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
CN102329999A (en) * 2011-07-30 2012-01-25 湖南晟通科技集团有限公司 Manufacture method of electroconductive aluminum alloy section
CN102543310A (en) * 2012-02-20 2012-07-04 徐高磊 Process for specially-shaped electrolytic conductive material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Effective date of registration: 20161230

Address after: Liushi Town, Yueqing city of Zhejiang Province, Wenzhou City West 325600 Ren Dang village

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Address before: 239001 room No. 1, science and technology innovation center, No. 82 West Garden Road, Anhui, Chuzhou, China

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Address after: 533615 Fifth Floor, Block A, Administrative Office Building, Xinshan Aluminum Products Demonstration Park, Baise City, Toutang Town, Tianyang County, Guangxi Zhuang Autonomous Region

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