CN106222499A - A kind of preparation technology of high-strength aluminum alloy bar - Google Patents
A kind of preparation technology of high-strength aluminum alloy bar Download PDFInfo
- Publication number
- CN106222499A CN106222499A CN201610835569.9A CN201610835569A CN106222499A CN 106222499 A CN106222499 A CN 106222499A CN 201610835569 A CN201610835569 A CN 201610835569A CN 106222499 A CN106222499 A CN 106222499A
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- China
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- aluminum alloy
- crystallizing wheel
- temperature
- alloy melt
- ingot casting
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Classifications
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
-
- 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
Abstract
The present invention is the preparation technology of a kind of high-strength aluminum alloy bar, in the production process of aluminium alloy rod, by to the control of each temperature in the allotment of alloying component and technological process, the conductivity changing aluminium alloy rod with this and intensity, enter to roll raising and the cooling of crystallizing wheel subsection gradual of process temperature, it is beneficial to alloy feeding and crystal grain refinement, heavy alloyed intensity and consistency can be put forward, thus while ensureing alloy high strength, improve its conductivity further, finally give aluminium alloy rod and can prepare the equivalent diameter special-shaped monofilament less than below 3.0mm, and ensure that monofilament tensile strength is not less than 320MPa, dc resistivity is not more than m(20 DEG C of environment of 32.75n Ω).
Description
Technical field
The present invention relates to wire preparing technical field, particularly relate to the preparation technology of a kind of high-strength aluminum alloy bar.
Background technology
Along with social development and need for electricity everywhere, the demand of aerial condutor also gets more and more, and aerial condutor leads to
Often being made up of conductor material and reinforcement material two parts, wherein reinforcement material is the same with conductor material, by some conductors
Material carries out stranded preparing around a conductor material.Now commonly used conductor material is aluminum alloy materials.But in reality
In production, the thermostability of conductor material, tensile strength and conductivity are conflict bodies, want that the tension improving conductor material is strong
On the premise of spending and ensureing qualified conductivity, it is thus achieved that preferably heat resistance and high-intensity performance, certainly will be to the alloy kind added
Class and processing technique have higher requirement.The more excellent coupling the most how obtaining mechanical property, heat resistance and electric conductivity is
The main contents of this area research.The wire in place special for some weather needs to accomplish the tensile strength of high intensity, simultaneously
Need again to reach the conductivity of middle intensity wire, and there is no now this kind of wire.
Summary of the invention
Present invention aims to the problem that existing wire lacks high-strength high-conductivity classification, it is provided that a kind of high-strength
The preparation technology of degree aluminium alloy rod.
The preparation technology of a kind of high-strength aluminum alloy bar, comprises the steps: 1) aluminium ingot and alloying metal are put into smelting furnace
Smelting, obtains aluminum alloy melt；2) being incubated aluminum alloy melt static, holding temperature is 750 ~ 760 DEG C；3) aluminum alloy melt is flowed into
Carrying out ingot casting in crystallizing wheel, ingot casting process temperature is 510 ~ 710 DEG C；4) feed mill molding, makes aluminium alloy rod, wherein enters to roll temperature
Degree is 500 ~ 530 DEG C；5) go out to roll rear aluminium alloy rod to get rid of bar and be collected.
Wherein in an embodiment, the composition of described aluminum alloy melt includes count by weight percentage: aluminum 97.25%, copper
< 0.1%, ferrum < 0.5%, silicon 0.5 ~ 0.9%, manganese < 0.03%, magnesium 0.6 ~ 0.9%, zinc < 0.1%, chromium < 0.03%, boron < 0.06%.
Wherein in an embodiment, described step 2) insulating process carries out refine, deaeration, purification to aluminum alloy melt.
Wherein in an embodiment, in described step 3), ingot casting process completes in crystallizing wheel, controls ingot casting speed simultaneously
Degree and cooling water pressure, change cooling water flow by controlling cooling water pressure, and aluminum alloy melt ingot casting in crystallizing wheel uses and divides
Duan Wendu, aluminum alloy melt takes turns to crystallizing wheel mid portion from entering crystallization, and around ingot casting, cooling water flow is linearly gradually increased；
Aluminum alloy melt exports from crystallizing wheel mid portion to crystallizing wheel, and around ingot casting, cooling water flow is linearly gradually reduced, crystallizing wheel
Exit cooling water flow is cooling water maximum stream flow and the meansigma methods of minimum discharge；Aluminum alloy melt enters the temperature of crystallizing wheel
690～710 DEG C, the temperature of aluminum alloy melt to crystallizing wheel interlude is gradually decreased to 590～620 DEG C, and aluminum alloy melt is in crystallizing wheel
Gradually being shaped to aluminium alloy ingots, when aluminium alloy ingots leaves crystallizing wheel, temperature is down to 510～530 DEG C.
Wherein in an embodiment, described step 5) is got rid of bar operation aluminium alloy rod and gets rid of from 5 ~ 6 meters high.
In sum, technique scheme is used, in the production process of aluminium alloy rod, by the allotment to alloying component
And the control of each temperature in technological process, the conductivity changing aluminium alloy rod with this and intensity, enter to roll the raising of process temperature
Cooling down with crystallizing wheel subsection gradual, beneficially alloy feeding and crystal grain refinement, can put forward heavy alloyed intensity and consistency, thus
Ensure to improve further while alloy high strength its conductivity, finally give aluminium alloy rod and can prepare equivalent diameter and be less than
The special-shaped monofilament of below 3.0mm, and ensure that monofilament tensile strength is not less than 320MPa, dc resistivity is not more than 32.75n Ω
M(20 DEG C of environment).
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further detailed explanation.
The preparation technology of a kind of high-strength aluminum alloy bar, comprises the steps: 1) aluminium ingot and alloying metal are put into smelting furnace
Smelting, obtains aluminum alloy melt；2) being incubated aluminum alloy melt static, holding temperature is 750 ~ 760 DEG C；3) aluminum alloy melt is flowed into
Carrying out ingot casting in crystallizing wheel, ingot casting process temperature is 510 ~ 710 DEG C；4) feed mill molding, makes aluminium alloy rod, wherein enters to roll temperature
Degree is 500 ~ 530 DEG C；5) go out to roll rear aluminium alloy rod to get rid of bar and be collected.Raw at the aluminium alloy rod of conventional High Intensity aluminium alloy conductor
During product, holding temperature is usually 720 ~ 730 DEG C, and ingot casting temperature is usually 690 ~ 710 DEG C, enter to roll temperature be usually 450 ~
460 DEG C, the regulation of temperature in the present invention is by production process, make the aluminium alloy rod produced can reach high-strength conductor
Strength criterion and the coordinating and unifying of middle intensity electrical conductivity.Holding temperature and to enter to roll the more conventional production method of temperature higher, finally
The aluminium alloy rod of molding can improve intensity while electrical conductivity ensureing.
Wherein in an embodiment, the composition of described aluminum alloy melt includes count by weight percentage: aluminum 97.25%, copper
< 0.1%, ferrum < 0.5%, silicon 0.5 ~ 0.9%, manganese < 0.03%, magnesium 0.6 ~ 0.9%, zinc < 0.1%, chromium < 0.03%, boron < 0.06%.High-strength
In degree aluminium alloy conductor, in order to obtain corresponding intensity, the content of aluminum is usually more than 98%, but for intensity in realizing
Conductivity, certainly will need reduce aluminum content just can make conductor conformance with standard, if but the content of aluminum declined at most intensity want
Asking and do not reach, the content obtaining aluminum through overtesting proportioning is 97.25%, and corresponding, remaining tenor has risen, with
Upper data proportioning is all by actual tests data gained.
Wherein in an embodiment, described step 2) insulating process carries out refine, deaeration, purification to aluminum alloy melt.
In order to ensure that stablizing of aluminum alloy melt follow-up later crystallization process needs to purify aluminum alloy melt.
Wherein in an embodiment, in described step 3), ingot casting process completes in crystallizing wheel, controls ingot casting speed simultaneously
Degree and cooling water pressure, change cooling water flow by controlling cooling water pressure, and aluminum alloy melt ingot casting in crystallizing wheel uses and divides
Duan Wendu, aluminum alloy melt takes turns to crystallizing wheel mid portion from entering crystallization, and around ingot casting, cooling water flow is linearly gradually increased；
Aluminum alloy melt exports from crystallizing wheel mid portion to crystallizing wheel, and around ingot casting, cooling water flow is linearly gradually reduced, crystallizing wheel
Exit cooling water flow is cooling water maximum stream flow and the meansigma methods of minimum discharge；Aluminum alloy melt enters the temperature of crystallizing wheel
690～710 DEG C, the temperature of aluminum alloy melt to crystallizing wheel interlude is gradually decreased to 590～620 DEG C, and aluminum alloy melt is in crystallizing wheel
Gradually being shaped to aluminium alloy ingots, when aluminium alloy ingots leaves crystallizing wheel, temperature is down to 510～530 DEG C.Ingot casting temperature and ingot casting speed
Combine and can obtain high-quality stock, because ingot casting temperature is high compared with plain conductor ingot casting temperature about 100 DEG C, it is therefore desirable to add
Fast ingot casting speed, otherwise easy sticking to mould.The temperature of ingot casting is selected to be largely fixed the intensity of stock, casts in prior art
Ingot temperature is all mutually synthermal, aluminum alloy melt during ingot casting owing to the change of temperature can crystallize inside it thus completes ingot casting
Process, the temperature controlled bad ingot casting result that can affect even produces defect ware, temperature is set to gradual change type and can improve aluminum
The crystal density of aluminium alloy, thus reach to improve the purpose of final product intensity, and temperature range arranges little, can avoid crystallization
Process destroys crystallization process because of temperature jump.
Wherein in an embodiment, described step 5) is got rid of bar operation aluminium alloy rod and gets rid of from 5 ~ 6 meters high.Aluminium alloy rod
Get rid of due to action of gravity oneself molding from eminence, facilitate subsequent storage to transport.
Embodiment 1
1) aluminium ingot and alloying metal being put into smelting furnace smelting, obtain aluminum alloy melt, wherein the composition of aluminum alloy melt is by weight percentage
Calculating includes: aluminum 97.25%, copper 0.1%, ferrum 0.5%, silicon 0.5%, manganese 0.03%, magnesium 0.9%, zinc 0.1%, chromium 0.03%, boron 0.06%；
2) being incubated aluminum alloy melt static, holding temperature is 750 DEG C；3) ingot casting is carried out during aluminum alloy melt is flowed into crystallizing wheel, casting
Ingot process aluminum alloy melt temperature is gradually decreased to 620 DEG C by 710 DEG C, finally goes out crystallizing wheel aluminum alloy melt and changes into aluminium alloy ingots, temperature
Degree is down to 530 DEG C；4) feed mill molding, makes aluminium alloy rod, and wherein entering to roll temperature is 550 DEG C；5) go out to roll rear aluminium alloy rod to get rid of
Bar is collected.
Embodiment 2
1) aluminium ingot and alloying metal being put into smelting furnace smelting, obtain aluminum alloy melt, wherein the composition of aluminum alloy melt is by weight percentage
Calculating includes: aluminum 97.25%, copper 0.06%, ferrum 0.4%, silicon 0.9%, manganese 0.03%, magnesium 0.6%, zinc 0.1%, chromium 0.02%, boron
0.04%；2) being incubated aluminum alloy melt static, holding temperature is 760 DEG C；3) cast during aluminum alloy melt is flowed into crystallizing wheel
Ingot, ingot casting process aluminum alloy melt temperature is gradually decreased to 590 DEG C by 690 DEG C, finally goes out crystallizing wheel aluminum alloy melt and change into aluminium alloy
Ingot, temperature is down to 510 DEG C；4) feed mill molding, makes aluminium alloy rod, and wherein entering to roll temperature is 570 DEG C；5) go out to roll rear aluminium alloy
Bar gets rid of bar and is collected.
Embodiment 3
1) aluminium ingot and alloying metal being put into smelting furnace smelting, obtain aluminum alloy melt, wherein the composition of aluminum alloy melt is by weight percentage
Calculating includes: aluminum 97.25%, copper 0.08%, ferrum 0.35%, silicon 0.7%, manganese 0.02%, magnesium 0.8%, zinc 0.08%, chromium 0.03%, boron
0.04%；2) being incubated aluminum alloy melt static, holding temperature is 755 DEG C；3) cast during aluminum alloy melt is flowed into crystallizing wheel
Ingot, ingot casting process aluminum alloy melt temperature is gradually decreased to 600 DEG C by 700 DEG C, finally goes out crystallizing wheel aluminum alloy melt and change into aluminium alloy
Ingot, temperature is down to 520 DEG C；4) feed mill molding, makes aluminium alloy rod, and wherein entering to roll temperature is 560 DEG C；5) go out to roll rear aluminium alloy
Bar gets rid of bar and is collected.
The foregoing is only a specific embodiment of the present invention, but the architectural feature of the present invention is not limited to this, any
Those skilled in the art is in the field of the invention, and change or the modification made are encompassed by the scope of the claims of the present invention.
Claims (5)
1. the preparation technology of a high-strength aluminum alloy bar, it is characterised in that comprise the steps:
Aluminium ingot and alloying metal are put into smelting furnace smelting, obtains aluminum alloy melt；
Being incubated aluminum alloy melt static, holding temperature is 750 ~ 760 DEG C；
Aluminum alloy melt is flowed in crystallizing wheel and carries out ingot casting, and ingot casting process temperature excursion is 710 ~ 510 DEG C；
Feed mill molding, makes aluminium alloy rod, and wherein entering to roll temperature is 500 ~ 530 DEG C；
Go out to roll rear aluminium alloy rod to get rid of bar and be collected.
The preparation technology of a kind of high-strength aluminum alloy bar, it is characterised in that described aluminum alloy melt
Composition includes count by weight percentage: aluminum 97.25%, copper < 0.1%, ferrum < 0.5%, silicon 0.5 ~ 0.9%, manganese < 0.03%, magnesium 0.6 ~
0.9%, zinc < 0.1%, chromium < 0.03%, boron < 0.06%.
A kind of preparation technology of high-strength aluminum alloy bar, it is characterised in that: described step 2) insulation
During aluminum alloy melt is carried out refine, deaeration, purification.
A kind of preparation technology of high-strength aluminum alloy bar, it is characterised in that: described step 3) is cast
Ingot process completes in crystallizing wheel, controls ingot casting speed and cooling water pressure simultaneously, changes cooling by controlling cooling water pressure
Discharge, aluminum alloy melt ingot casting in crystallizing wheel uses wise temperature, and aluminum alloy melt takes turns to crystallizing wheel pars intermedia from entering crystallization
Point, around ingot casting, cooling water flow is linearly gradually increased；Aluminum alloy melt exports from crystallizing wheel mid portion to crystallizing wheel, ingot casting
Around cooling water flow is linearly gradually reduced, and crystallizing wheel exit cooling water flow is cooling water maximum stream flow and minimum discharge
Meansigma methods；Aluminum alloy melt enter crystallizing wheel temperature be 690～710 DEG C, the temperature of aluminum alloy melt to crystallizing wheel interlude by
Gradually being down to 590～620 DEG C, aluminum alloy melt is gradually shaped to aluminium alloy ingots, temperature when aluminium alloy ingots leaves crystallizing wheel in crystallizing wheel
Degree is down to 510～530 DEG C.
A kind of preparation technology of high-strength aluminum alloy bar, it is characterised in that: described step 5) is got rid of
Bar operation aluminium alloy rod gets rid of from 5 ~ 6 meters high.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835569.9A CN106222499B (en) | 2016-09-21 | 2016-09-21 | A kind of preparation technology of high-strength aluminum alloy bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835569.9A CN106222499B (en) | 2016-09-21 | 2016-09-21 | A kind of preparation technology of high-strength aluminum alloy bar |
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| Publication Number | Publication Date |
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| CN106222499A true CN106222499A (en) | 2016-12-14 |
| CN106222499B CN106222499B (en) | 2018-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653754A (en) * | 2022-03-21 | 2022-06-24 | 龚强 | Continuous casting and rolling mill for aluminum alloy rods |
Citations (3)
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|---|---|---|---|---|
| CN101200783A (en) * | 2006-12-11 | 2008-06-18 | 上海中天铝线有限公司 | Method for manufacturing high-strength aluminium-magnesium-slicon alloy wire |
| CN102041418A (en) * | 2011-01-28 | 2011-05-04 | 江苏中天科技股份有限公司 | Method for manufacturing moderate intensity aluminium alloy wire with 57% electric conductivity |
| CN102766788A (en) * | 2012-08-09 | 2012-11-07 | 上海电缆研究所 | Preparation method of moderate strength Al-Mg-Si alloy rods and alloy wires through natural ageing treatment |
-
2016
- 2016-09-21 CN CN201610835569.9A patent/CN106222499B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200783A (en) * | 2006-12-11 | 2008-06-18 | 上海中天铝线有限公司 | Method for manufacturing high-strength aluminium-magnesium-slicon alloy wire |
| CN102041418A (en) * | 2011-01-28 | 2011-05-04 | 江苏中天科技股份有限公司 | Method for manufacturing moderate intensity aluminium alloy wire with 57% electric conductivity |
| CN102766788A (en) * | 2012-08-09 | 2012-11-07 | 上海电缆研究所 | Preparation method of moderate strength Al-Mg-Si alloy rods and alloy wires through natural ageing treatment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653754A (en) * | 2022-03-21 | 2022-06-24 | 龚强 | Continuous casting and rolling mill for aluminum alloy rods |
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| CN106222499B (en) | 2018-04-10 |
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