CN107201465B - High hardness aluminium alloy lead wire - Google Patents

High hardness aluminium alloy lead wire Download PDF

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Publication number
CN107201465B
CN107201465B CN201710083834.7A CN201710083834A CN107201465B CN 107201465 B CN107201465 B CN 107201465B CN 201710083834 A CN201710083834 A CN 201710083834A CN 107201465 B CN107201465 B CN 107201465B
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temperature
aluminium alloy
lead wire
high hardness
parts
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CN201710083834.7A
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Chinese (zh)
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CN107201465A (en
Inventor
贾伟
田进
潘建
张军
马军
张险峰
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.)
Jiangsu Hengtong Wire and Cable Technology Co Ltd
Jiangsu Hengtong Electric Power Special Wire Co Ltd
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Jiangsu Hengtong Electric Power Special Wire Co Ltd
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Conductive Materials (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Metal Rolling (AREA)

Abstract

The present invention discloses a kind of high hardness aluminium alloy lead wire, and the high hardness aluminium alloy lead wire is grouped as by the group of following parts by weight: 100 parts of aluminium, 0.06 part of silicon, 1.2 parts of iron, 0.22 part of copper, 0.09 part of rare earth element, 0.025 part of boron, 0.018 part of titanium；The rare earth element is made of lanthanum, cerium and scandium, and the lanthanum, cerium and scandium are mixed to form the rare earth element according to 14:6:1 weight ratio；Each component is put into smelting furnace, heating is allowed to melt and keep the temperature at 750-780 DEG C, is stirred well to uniformly, and mixing time >=30min stands heat preservation, obtains alloy melt；Casting obtains aluminium alloy cast ingot by aluminum alloy melt, controls 690 ~ 700 DEG C of cast temperature；Induction heating is carried out, temperature is raised at 520 ~ 540 DEG C and is rolled, in the promotion for carrying out temperature into before rolling.High hardness aluminium alloy lead wire tensile strength of the present invention, elongation substantially improve, and reduce resistivity 6 ~ 10%.

Description

High hardness aluminium alloy lead wire
Technical field
The present invention relates to a kind of aluminium alloy rod more particularly to a kind of high hardness aluminium alloy lead wires.
Background technique
Aluminium alloy is one of most popular nonferrous materials in industry, Aeronautics and Astronautics, automobile, machine-building, Has extensive application in ship and chemical industry.With the fast development of science and technology and industrial economy, the demand of aluminium alloy Increasing, the research of aluminium alloy is also goed deep into therewith.The extensive use of aluminium alloy promotes aluminium alloy in the development of power industry, The development of power industry has the application field for promoting aluminium alloy simultaneously.
As the aluminium alloy rod that shielding is used with aluminium alloy route, common aluminium alloy rod wants wire drawing to 0.10-0.12mm. And currently, inside mechanical processing industry cable field, traditional aluminium bar or aluminium alloy rod after fabrication, due to organization material knot The limitation of structure influences performance of the material in processing, and tensile strength and elongation are all relatively low, and tensile strength only has 180Mpa, elongation only have 10%, in subsequent drawing process, cause early stage fracture of wire or intensity unqualified, not only cause in this way The waste of raw material, and increase production cost.
Summary of the invention
The present invention provides a kind of high hardness aluminium alloy lead wire, this high hardness aluminium alloy lead wire metallization structure is obviously good Turn, substantially improved by tensile strength, elongation when pilot production and subsequent wire drawing, reduces resistivity 6 ~ 10%.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
100 parts of aluminium,
0.06 part of silicon,
1.2 parts of iron,
0.22 part of copper,
0.09 part of rare earth element,
0.025 part of boron,
0.018 part of titanium；
The high hardness aluminium alloy lead wire is obtained by following technique, this technique the following steps are included:
Step 1: heating is allowed to melt and keep the temperature at 750-780 DEG C by 100 parts of investment smelting furnaces of aluminium ingot, silicon is added 0.06 part, 1.2 parts of iron, 0.22 part of copper, 0.09 part of rare earth element, 0.025 part of boron, 0.018 part of titanium are stirred well to uniformly, stir >=30min is mixed the time, heat preservation is stood, obtains alloy melt；
Step 2: refining agent is added in step 1 alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750 ~ 780 DEG C, then keep the temperature acquisition aluminum alloy melt；
It comes out of the stove Step 3: the aluminum alloy melt of step 2 is toppled over, degasification is carried out using online off gas system, in order to control Pernicious gas in molten aluminum；
Step 4: aluminum alloy melt of the casting Jing Guo step 3 obtains aluminium alloy cast ingot, casting process controls cast temperature 690 ~ 700 DEG C, casting rate 5t/h is controlled, confirms crystalline state by Metallographic Analysis；
Step 5: carrying out induction heating, in the promotion for carrying out temperature into before rolling, temperature is improved 30 ~ 40 DEG C, realizes temperature Degree by 490-510 DEG C is changed into 520 ~ 540 DEG C, then into rolling at 520-540 DEG C；
Step 6: cooling rapidly, a total of 5 part of cooling segment is cooled down, by adjusting each area distribution, by aluminium bar 60 ~ 90 DEG C are cooled to, each area distribution is as shown in table 3:
3 cooling water distribution table of table
Region 1st area 2nd area 3rd area 4th area 5th area
Hydraulic pressure/Mpa 100 200 100 50 0
Step 7: take-up, take-up mode can carry out take-up using solid matter winding method.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
High hardness aluminium alloy lead wire of the present invention, containing the rare earth element that is made of lanthanum, cerium and scandium in specified model in formula The synergistic effect for enclosing interior iron and rare earth, can be improved ductility, the optimization aluminium liquid component of rod of metal alloy, and refinement crystal grain removes slag, increases Add corrosion resistance, removes gas and objectionable impurities in aluminium alloy, the formation of crack of aluminium alloy is reduced, to improve aluminium alloy Intensity improves processing performance, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improve hardness, increases intensity and tough Property；Secondly, the lanthanum, cerium and scandium are mixed to form the rare earth element according to 14:6:1 weight ratio and boron acts synergistically, make The mobility that product improves aluminium in casting process is obtained, reduces the adverse effect of other elements in aluminium, nuclear particle is formed, thus shape At non-spontaneous forming core, play the role of refining crystal grain, macrograin degree can achieve 5-6 grades.The boron element of addition is certain In range and above-mentioned aluminium can be reasonably combined, reduces resistivity 6 ~ 10%；Again, titanium elements: due to having in aluminum substrate there are above-mentioned After beneficial element, titanium elements are added, can be played a significant role in metal grain tissue, titanium elements are controlled of the invention In range, macrograin degree reaches 6-8 grades.
Specific embodiment
The present invention will be further described below with reference to examples:
Embodiment: a kind of high hardness aluminium alloy lead wire, the high hardness aluminium alloy lead wire are grouped by the group of following parts by weight At:
100 parts of aluminium,
0.06 part of silicon,
1.2 parts of iron,
0.22 part of copper,
0.09 part of rare earth element,
0.025 part of boron,
0.018 part of titanium；
The manufacturing process of above-mentioned high hardness aluminium alloy lead wire is as follows:
Step 1: heating is allowed to melt and keep the temperature at 750-780 DEG C by 100 parts of investment smelting furnaces of aluminium ingot, silicon is added 0.06 part, 1.2 parts of iron, 0.22 part of copper, 0.09 part of rare earth element, 0.025 part of boron, 0.018 part of titanium are stirred well to uniformly, stir >=30min is mixed the time, heat preservation 45min is stood；
Step 2: refining agent is added in step 1 alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750-780 DEG C, refining time 45min, then keep the temperature；
It comes out of the stove Step 3: the molten aluminum of step 2 is toppled over, degasification is carried out using online off gas system, in order to control molten aluminum Interior pernicious gas, is handled using off gas system, and is detected using hydrogen meter, and index request is as follows:
2 degasification of table requirement
Before online degasification /≤ After online degasification /≤
0.300 ml/100g 0.150ml/100g
Step 4: casting obtains aluminium alloy cast ingot, casting and forming, casting process controls 690 ~ 700 DEG C of cast temperature, control Casting rate 5t/h.
Step 5: carrying out induction heating, temperature is raised at 520-540 DEG C and is rolled.In order to control aluminium alloy rod Indices, rolling must carry out at a certain temperature, can be 490- in the promotion i.e. original temperature for carrying out temperature into before rolling 510, after temperature improves 30-40 DEG C, temperature becomes 520-540 DEG C, using heating device, temperature can be improved 30-40 DEG C, only Into rolling at 520-540 DEG C, could with the combination of this ingredient so that aluminium alloy rod reaches requirement.
Step 6: cooling rapidly, a total of 5 part of cooling segment is cooled down, by adjusting each area distribution, by aluminium bar 60 ~ 90 DEG C are cooled to, each area distribution is as follows:
3 cooling water distribution table of table
Region 1st area 2nd area 3rd area 4th area 5th area
Hydraulic pressure/Mpa 100 200 100 50 0
Step its, take-up, take-up mode can using solid matter winding method carry out take-up.
When using above-mentioned high hardness aluminium alloy lead wire, referring in formula containing the rare earth element being made of lanthanum, cerium and scandium The synergistic effect for determining iron and rare earth in range, can be improved ductility, the optimization aluminium liquid component of rod of metal alloy, and refinement crystal grain is gone Slag increases corrosion resistance.The gas and objectionable impurities in aluminium alloy are removed, the formation of crack of aluminium alloy is reduced, to improve aluminium The intensity of alloy improves processing performance, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improve hardness, increases by force Degree and toughness；Secondly, the lanthanum, cerium and scandium, which are mixed to form the rare earth element according to 14:6:1 weight ratio, cooperates with work with boron With, so that product improves the mobility of aluminium in casting process, reduce the adverse effect of other elements in aluminium, form nuclear particle, To form non-spontaneous forming core, play the role of refining crystal grain, macrograin degree can achieve 5 ~ 6 grades.The boron element of addition In a certain range can be reasonably combined with above-mentioned aluminium, reduce resistivity 6 ~ 10%；Again, titanium elements: due to existing in aluminum substrate After above-mentioned beneficial element, titanium elements are added, can be played a significant role in metal grain tissue, by titanium elements control at this In the range of invention, macrograin degree reaches 6 ~ 8 grades.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.

Claims (1)

1. a kind of high hardness aluminium alloy lead wire, it is characterised in that: the high hardness aluminium alloy lead wire by following parts by weight component Composition:
100 parts of aluminium,
0.06 part of silicon,
1.2 parts of iron,
0.22 part of copper,
0.09 part of rare earth element,
0.025 part of boron,
0.018 part of titanium；
The high hardness aluminium alloy lead wire is obtained by following technique, this technique the following steps are included:
Step 1: heating is allowed to melt and keep the temperature at 750-780 DEG C by 100 parts of investment smelting furnaces of aluminium ingot, silicon 0.06 is added Part, 1.2 parts of iron, 0.22 part of copper, 0.09 part of rare earth element, 0.025 part of boron, 0.018 part of titanium are stirred well to uniformly, when stirring Between >=30min, heat preservation is stood, alloy melt is obtained；
Step 2: refining agent is added in step 1 alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750 ~ 780 DEG C, then keep the temperature acquisition aluminum alloy melt；
It comes out of the stove Step 3: the aluminum alloy melt of step 2 is toppled over, degasification is carried out using online off gas system, in order to control molten aluminum Interior pernicious gas；
Step 4: aluminum alloy melt of the casting Jing Guo step 3 obtains aluminium alloy cast ingot, casting process controls cast temperature 690 ~ 700 DEG C, casting rate 5t/h is controlled, confirms crystalline state by Metallographic Analysis；
Step 5: carry out induction heating, into before rolling carry out temperature promotion, by temperature improve 30 ~ 40 DEG C, realize temperature by 490-510 DEG C is changed into 520 ~ 540 DEG C, then into rolling at 520-540 DEG C；
Step 6: cooling rapidly, a total of 5 part of cooling segment is cooled down, and by adjusting each area distribution, aluminium bar is cooled down To 60 ~ 90 DEG C, each area distribution is as shown in the table:
Cooling water distribution table
Region 1st area 2nd area 3rd area 4th area 5th area Hydraulic pressure/MPa 100 200 100 50 0
Step 7: take-up, take-up mode carries out take-up using solid matter winding method.
CN201710083834.7A 2015-05-13 2015-05-13 High hardness aluminium alloy lead wire Active CN107201465B (en)

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CN201510241012.8A CN104805335B (en) 2015-05-13 2015-05-13 Low-resistivity aluminium alloy rod
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CN201710083834.7A Active CN107201465B (en) 2015-05-13 2015-05-13 High hardness aluminium alloy lead wire
CN201710264334.3A Pending CN107254607A (en) 2015-05-13 2015-05-13 Alloy with High Conductivity wire rod
CN201710083841.7A Active CN107058810B (en) 2015-05-13 2015-05-13 Corrosion-resistant low-resistivity aluminium bar
CN201710083773.4A Active CN106939384B (en) 2015-05-13 2015-05-13 High-tensile aluminium alloy rod

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CN201710083773.4A Active CN106939384B (en) 2015-05-13 2015-05-13 High-tensile aluminium alloy rod

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CN105671370A (en) * 2015-11-30 2016-06-15 合肥市科亿铝业有限公司 Rare earth aluminum alloy rod for high-speed railway
CN108374110A (en) * 2018-03-26 2018-08-07 山东元旺电工科技有限公司 A kind of round aluminum rod and its production technology
CN108543828A (en) * 2018-05-10 2018-09-18 安徽润藤电缆材料科技有限公司 A kind of preparation method of aluminium bar
CN110846543B (en) * 2018-08-21 2022-05-31 国网辽宁省电力有限公司沈阳供电公司 Heat-resistant alloy monofilament and preparation method thereof
CN109338173A (en) * 2018-12-24 2019-02-15 国网冀北电力有限公司物资分公司 A kind of corrosion-resistant pure aluminum material and preparation method thereof
CN118127385B (en) * 2024-05-07 2024-07-19 内蒙古工业大学 Rare earth aluminum alloy material and preparation method and application thereof

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CN106939384B (en) 2018-06-29
CN104805335B (en) 2018-03-13
CN104805335A (en) 2015-07-29
CN107201465A (en) 2017-09-26
CN107254607A (en) 2017-10-17
CN106939384A (en) 2017-07-11
CN107058810B (en) 2018-08-31
CN107058810A (en) 2017-08-18

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