CN107058810A - Corrosion-resistant low-resistivity aluminium bar - Google Patents

Corrosion-resistant low-resistivity aluminium bar Download PDF

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Publication number
CN107058810A
CN107058810A CN201710083841.7A CN201710083841A CN107058810A CN 107058810 A CN107058810 A CN 107058810A CN 201710083841 A CN201710083841 A CN 201710083841A CN 107058810 A CN107058810 A CN 107058810A
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Prior art keywords
aluminium
corrosion
resistivity
resistant low
aluminium bar
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CN201710083841.7A
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CN107058810B (en
Inventor
贾伟
田进
潘建
蔺亚强
张军
马军
张险峰
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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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Conductive Materials (AREA)
  • Metal Rolling (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention discloses a kind of corrosion-resistant low-resistivity aluminium bar, and the corrosion-resistant low-resistivity aluminium bar is made up of the component of following parts by weight：100 parts of aluminium, 0.045 part of silicon, 1 part of iron, 0.25 part of copper, 0.085 part of rare earth element, 0.018 part of boron, 0.02 part of titanium；The rare earth element is made up of lanthanum, cerium and scandium, and the lanthanum, cerium and scandium are according to 14：6：1 weight ratio is mixed to form the rare earth element；Each component is put into smelting furnace, heating is allowed to fusing and is incubated at 750 780 DEG C, is stirred well to uniform, mixing time >=30min, stands insulation, obtains alloy melt；Casting obtains aluminium alloy cast ingot by aluminum alloy melt；Sensing heating is carried out, temperature is raised at 520 ~ 540 DEG C and rolled, the lifting of trip temperature is entered before entering to roll.The corrosion-resistant low-resistivity aluminium bar of the present invention improves the intensity of aluminium alloy, improves processing characteristics, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improves hardness, increase intensity and toughness.

Description

Corrosion-resistant low-resistivity aluminium bar
Technical field
The present invention relates to a kind of aluminium alloy rod, more particularly to a kind of corrosion-resistant low-resistivity aluminium bar.
Background technology
Aluminium alloy is one of most popular nonferrous materials in industry, Aeronautics and Astronautics, automobile, machine-building, Widely applied 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 development of the aluminium alloy in power industry, The development of power industry has the application field for promoting aluminium alloy simultaneously.
The aluminium alloy rod used as shielding with aluminium alloy circuit, conventional aluminium alloy rod wants wire drawing to 0.10-0.12mm. And it is current, inside mechanical processing industry cable field, traditional aluminium bar or aluminium alloy rod after fabrication, due to organization material knot The limitation of structure, performance of the influence material in processing, its tensile strength and elongation are all relatively low, and tensile strength only has 180Mpa, elongation only has 10%, in follow-up drawing process, causes early stage fracture of wire or intensity unqualified, so not only causes The waste of raw material, and add production cost.
The content of the invention
The present invention provides a kind of corrosion-resistant low-resistivity aluminium bar, and this corrosion-resistant low-resistivity aluminium bar metallization structure is obvious Take a turn for the better, substantially improved by tensile strength, elongation when pilot production and follow-up wire drawing, reduce resistivity 6 ~ 10%.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：A kind of corrosion-resistant low-resistivity aluminium bar, the corrosion resistant Erosion low-resistivity aluminium bar is made up of the component of following parts by weight：
100 parts of aluminium,
0.045 part of silicon,
1 part of iron,
0.25 part of copper,
0.085 part of rare earth element,
0.018 part of boron,
0.02 part of titanium；
The rare earth element is made up of lanthanum, cerium and scandium, and the lanthanum, cerium and scandium are according to 14：6：1 weight ratio is mixed to form institute State rare earth element.
Further improved technical scheme is as follows in above-mentioned technical proposal：
1. in such scheme, the model Al99.70 or Al99.85 of the aluminium.
2. in such scheme, the corrosion-resistant low-resistivity aluminium bar is obtained by following technique, this technique includes following step Suddenly：
Step 1: by 100 parts of input smelting furnaces of aluminium ingot, heating is allowed to fusing and is incubated at 750-780 DEG C, adds silicon 0.045 Part, 1 part of iron, 0.25 part of copper, 0.085 part of rare earth element, 0.018 part of boron, 0.02 part of titanium, are stirred well to uniform, mixing time >=30min, stands insulation, obtains alloy melt；
Step 2: adding refining agent in step one alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750 ~ 780 DEG C, then it is incubated acquisition aluminum alloy melt；
Come out of the stove Step 3: the aluminum alloy melt of step 2 is toppled over, then degasification is carried out by online off gas system, in order to control aluminium liquid Interior pernicious gas；
Step 4: aluminum alloy melt of the casting Jing Guo step 3 obtains aluminium alloy cast ingot, casting cycle control cast temperature 690 ~ 700 DEG C, control casting rate 5t/h；
Step 5: carrying out sensing heating, temperature is raised at 520 ~ 540 DEG C and rolled, and the lifting of trip temperature is entered before entering to roll, It is 490-510 that temperature is improved into 30 ~ 40 DEG C i.e. original temperatures, and temperature is improved after 30-40 DEG C, and temperature is changed into 520-540 DEG C, then Enter to roll at 520-540 DEG C；
Step 6: rapid cooling, a total of 5 part of cooling segment is cooled down, by adjusting each area distribution, aluminium bar is cooled To 60 ~ 90 DEG C, each area distribution is as shown in table 3：
The cooling water distribution table of table 3
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.
3. in such scheme, the time that insulation is stood in the step one is refining time in 45min, the step 2 For 45min.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
The corrosion-resistant low-resistivity aluminium bar of the present invention, it contains the rare earth element being made up of lanthanum, cerium and scandium in specified range in being formulated The synergy of interior iron and rare earth, can improve ductility, the optimization aluminium liquid component of rod of metal alloy, crystal grain thinning, remove slag, increase Decay resistance, removes the gas and objectionable impurities in aluminium alloy, the formation of crack of aluminium alloy is reduced, so as to improve the strong of aluminium alloy Degree, improves processing characteristics, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improves hardness, increases intensity and tough Property；Secondly, the lanthanum, cerium and scandium are according to 14：6：1 weight ratio is mixed to form the rare earth element and acted synergistically with boron, makes The mobility that product improves aluminium in casting cycle is obtained, reduces the adverse effect of other elements in aluminium, nuclear particle is formed, so that shape Into non-spontaneous forming core, play a part of crystal grain thinning, macrograin degree can reach 5-6 grades.The boron element of addition is certain In the range of, and above-mentioned aluminium can be reasonably combined, reduces resistivity 6 ~ 10%；Again, titanium elements：Above-mentioned have due to existing in aluminum substrate After beneficial element, titanium elements are added, can be played a significant role in metal grain tissue, titanium elements are controlled the present invention's In the range of, macrograin degree reaches 6-8 grades.
Embodiment
With reference to embodiment, the invention will be further described：
Embodiment：A kind of corrosion-resistant low-resistivity aluminium bar, the corrosion-resistant low-resistivity aluminium bar by following parts by weight component group Into：
100 parts of aluminium,
0.045 part of silicon,
1 part of iron,
0.25 part of copper,
0.085 part of rare earth element,
0.018 part of boron,
0.02 part of titanium；
The manufacturing process of above-mentioned corrosion-resistant low-resistivity aluminium bar is as follows：
Step 1: by 100 parts of input smelting furnaces of aluminium ingot, heating is allowed to fusing and is incubated at 750-780 DEG C, adds silicon 0.045 Part, 1 part of iron, 0.25 part of copper, 0.085 part of rare earth element, 0.018 part of boron, 0.02 part of titanium, are stirred well to uniform, mixing time >=30min, stands insulation 45min；
Step 2: adding refining agent in step one alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750- 780 DEG C, refining time 45min, then be incubated；
Come out of the stove Step 3: the aluminium liquid of step 2 is toppled over, then degasification is carried out by online off gas system, in order to control have in aluminium liquid Evil gas, is handled using off gas system, and is detected using hydrogen meter, index request such as following table：
The degasification of table 2 requirement
Before online degasification /≤ After online degasification /≤
0.300 ml/100g 0.150ml/100g
Step 4: casting obtains aluminium alloy cast ingot, casting, casting cycle 690 ~ 700 DEG C of cast temperature of control, control casting Speed 5t/h.
Step 5: carrying out sensing heating, temperature is raised at 520-540 DEG C and rolled.In order to control aluminium alloy rod Indices, rolling must be carried out at a certain temperature, and the lifting i.e. original temperature of trip temperature can be entered before entering to roll for 490- 510, temperature is improved after 30-40 DEG C, and temperature is changed into 520-540 DEG C, using heater, temperature can be improved into 30-40 DEG C, only Enter to roll at 520-540 DEG C, combination that could be with this composition so that aluminium alloy rod reaches requirement.
Step 6: rapid cooling, 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：
The cooling water distribution table of table 3
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.
During using above-mentioned corrosion-resistant low-resistivity aluminium bar, it exists in being formulated containing the rare earth element being made up of lanthanum, cerium and scandium The synergy of iron and rare earth in specified range, can improve the ductility of rod of metal alloy, optimize aluminium liquid component, crystal grain thinning, Remove slag, increase decay resistance.The gas and objectionable impurities in aluminium alloy are removed, the formation of crack of aluminium alloy is reduced, so as to improve The intensity of aluminium alloy, improves processing characteristics, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improves hardness, increase Intensity and toughness；Secondly, the lanthanum, cerium and scandium are according to 14：6：1 weight ratio is mixed to form the rare earth element and cooperateed with boron Effect so that product improves the mobility of aluminium in casting cycle, reduces the adverse effect of other elements in aluminium, forms caryoplasm Point, so as to form non-spontaneous forming core, plays a part of crystal grain thinning, macrograin degree can reach 5 ~ 6 grades.The boron member of addition Element within the specific limits, and above-mentioned aluminium can it is reasonably combined, reduce resistivity 6 ~ 10%；Again, titanium elements：Due to being deposited in aluminum substrate After above-mentioned beneficial element, titanium elements are added, can be played a significant role in metal grain tissue, titanium elements control is existed In the scope of the present 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 can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.

Claims (3)

1. a kind of corrosion-resistant low-resistivity aluminium bar, it is characterised in that：The corrosion-resistant low-resistivity aluminium bar is by following parts by weight Component is constituted：
100 parts of aluminium,
0.045 part of silicon,
1 part of iron,
0.25 part of copper,
0.085 part of rare earth element,
0.018 part of boron,
0.02 part of titanium；
The corrosion-resistant low-resistivity aluminium bar is obtained by following technique, and this technique comprises the following steps：
Step 1: by 100 parts of input smelting furnaces of aluminium ingot, heating is allowed to fusing and is incubated at 750-780 DEG C, adds silicon 0.045 Part, 1 part of iron, 0.25 part of copper, 0.085 part of rare earth element, 0.018 part of boron, 0.02 part of titanium, are stirred well to uniform, mixing time >=30min, stands insulation, obtains alloy melt；
Step 2: adding refining agent in step one alloy melt, and refined using high pure nitrogen, nitrogen refining temperature 750 ~ 780 DEG C, then it is incubated acquisition aluminum alloy melt；
Come out of the stove Step 3: the aluminum alloy melt of step 2 is toppled over, then degasification is carried out by online off gas system, in order to control aluminium liquid Interior pernicious gas；
Step 4: aluminum alloy melt of the casting Jing Guo step 3 obtains aluminium alloy cast ingot, casting cycle control cast temperature 690 ~ 700 DEG C, casting rate 5t/h is controlled, crystalline state is confirmed by Metallographic Analysis；
Step 5: carrying out sensing heating, the lifting of trip temperature is entered before entering to roll, temperature is improved 30 ~ 40 DEG C, realize temperature by 490-510 DEG C is changed into 520 ~ 540 DEG C, then enters to roll at 520-540 DEG C；
Step 6: rapid cooling, a total of 5 part of cooling segment is cooled down, by adjusting each area distribution, aluminium bar is cooled To 60 ~ 90 DEG C, each area distribution is as shown in table 3：
The cooling water distribution table of table 3
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.
2. corrosion-resistant low-resistivity aluminium bar according to claim 1, it is characterised in that：Insulation is stood in the step one Time is 45min, and refining time is 45min in the step 2.
3. corrosion-resistant low-resistivity aluminium bar according to claim 1, it is characterised in that：The model Al99.70 of the aluminium Or Al99.85.
CN201710083841.7A 2015-05-13 2015-05-13 Corrosion-resistant low-resistivity aluminium bar Active CN107058810B (en)

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CN201710083834.7A Active CN107201465B (en) 2015-05-13 2015-05-13 High hardness aluminium alloy lead wire
CN201510241012.8A Active CN104805335B (en) 2015-05-13 2015-05-13 Low-resistivity aluminium alloy rod
CN201710083773.4A Active CN106939384B (en) 2015-05-13 2015-05-13 High-tensile aluminium alloy rod

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CN201510241012.8A Active CN104805335B (en) 2015-05-13 2015-05-13 Low-resistivity aluminium alloy rod
CN201710083773.4A Active CN106939384B (en) 2015-05-13 2015-05-13 High-tensile aluminium alloy rod

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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
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

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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
CN118127385A (en) * 2024-05-07 2024-06-04 内蒙古工业大学 Rare earth aluminum alloy material and preparation method and application thereof

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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
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CN107201465A (en) 2017-09-26
CN107201465B (en) 2019-02-26
CN104805335A (en) 2015-07-29
CN107058810B (en) 2018-08-31
CN106939384A (en) 2017-07-11
CN107254607A (en) 2017-10-17
CN104805335B (en) 2018-03-13
CN106939384B (en) 2018-06-29

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