CN107299242A - A kind of preparation method of miniaturization drawing aluminium bar and the aluminum alloy materials produced - Google Patents
A kind of preparation method of miniaturization drawing aluminium bar and the aluminum alloy materials produced Download PDFInfo
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- CN107299242A CN107299242A CN201710473039.9A CN201710473039A CN107299242A CN 107299242 A CN107299242 A CN 107299242A CN 201710473039 A CN201710473039 A CN 201710473039A CN 107299242 A CN107299242 A CN 107299242A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
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- C22C1/026—Alloys based on aluminium
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Abstract
The invention provides a kind of preparation method of miniaturization drawing aluminium bar, its aluminium alloy rod prepared after wire drawing is verified, complies fully with requirement, reduces processing cost.The aluminium liquid of miniaturization drawing aluminum alloy materials composition proportion is made in advance, it is ensured that aluminium liquid main component composition is Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；Efficient injection refining agent is passed through in the holding furnace equipped with aluminium liquid afterwards is refined in melt, and it is Al >=98.70wt%, Si to adjust composition proportion in aluminium liquid after skimming again：0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%, external refining afterwards and slagging-off obtain clean aluminium liquid, clean aluminium liquid is cast, continuous rolling is carried out after blank alignment afterwards to casting, cooling, aluminium bar is formed, quenches, clean afterwards, obtaining miniaturization drawing aluminium bar after cooling.
Description
Technical field
The present invention relates to metallurgical technical field, specially a kind of preparation method of miniaturization drawing aluminium bar, the present invention
Additionally provide miniaturization drawing aluminum alloy materials.
Background technology
The production process of miniaturization drawing aluminium and aluminium alloy rod is more special, often demand with high-end producing equipment and
Top technology is carried out Instructing manufacture as guiding and operated, and it causes the high processing costs of miniaturization drawing aluminium alloy rod.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of preparation method of miniaturization drawing aluminium bar, its aluminium prepared is closed
Golden bar, after wire drawing is verified, complies fully with requirement, reduces processing cost, and the aluminium alloy rod obtained is made using this method
Make the recrystal grain of follow-up product fined, intensity, elongation are improved.
A kind of preparation method of miniaturization drawing aluminium bar, it is characterised in that：Make miniaturization drawing aluminium alloy in advance
The aluminium liquid of material composition proportioning, it is ensured that aluminium liquid main component composition is Al >=98.70wt%, Si：0.03~0.08wt%, Fe：
0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；Efficient injection refining agent is passed through afterwards
Refined in holding furnace equipped with aluminium liquid in melt, adjusted again after skimming in aluminium liquid composition proportion be Al >=98.70wt%,
Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%, it
External refining and slagging-off obtain clean aluminium liquid afterwards, and clean aluminium liquid is cast, and blank alignment, cooling afterwards to casting is laggard
Row continuous rolling, formation aluminium bar, miniaturization drawing aluminium bar is obtained after quenching afterwards, cleaning, cooling.
It is further characterized by：
Its specific preparation process is as follows：
1) raw material selection and melting：Raw material are tested, select the aluminium ingot of corresponding grade to carry out reasonably combined, throwing
Enter temperature of aluminum liquid≤760 DEG C in aluminium melting furnace melting, control stove；
2) aluminium liquid constituent analysis：By melted aluminium liquid or electrolysis raw aluminum liquid metaideophone to holding furnace, sampled after stirring
Quickly analyzed with direct-reading spectrometer, Al, Si, Fe, V and B content in detection solution；
3) Alloying Treatment：According to step 2 spectral test result, aluminium silicon, ferro-aluminum, the addition of aluminium boron intermediate alloy are calculated
Amount, control heat preserving furnace aluminum liquid temperature adds corresponding intermediate alloy at 740 ± 10 DEG C, and stirring makes aluminium liquid composition full and uniform,
The aluminium liquid main component is constituted：Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：
0.0001%~0.001wt%, B：0.005~0.010wt%；
4) refine：Complete after step 3, carried when temperature of aluminum liquid reaches 750 ± 10 DEG C with 99.999% high pure nitrogen
Body, efficient injection refining agent is passed through in holding furnace in melt and refined, and reaches the purified treatment of aluminium liquid degasification, removal of impurities, essence
Control refining agent is blown into during refining speed and the pressure of nitrogen；
5) skim：After the completion of step 4, aluminium liquid stands 5~10 minutes, opens holding furnace and skims and skimmed, will be floated over
Aluminium slag on aluminium liquid surface is cleaned out；
6) composition adjustment：Step 4,5 aluminium liquid will be completed 30~40 minutes are stood in holding furnace, be then sampled point
Analysis, constituent content is adjusted when deviateing, and confirms aluminium liquid into being grouped into：Al >=98.70wt%, Si：0.03~0.08wt%,
Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；
7) external refining and slagging-off：After the completion of step 6, when temperature of aluminum liquid reaches 740 ± 10 DEG C, you can come out of the stove, aluminium liquid
Out enter online depassing unit and filter by chute from holding furnace, carry out external refining, degasification again removes the gred, slagging-off
When need to from slagging-off instrument carry out；
8) continuously casting：Clean aluminium liquid after being refined again to step 7 carries out direct casting, and cast temperature is controlled 675
~695 DEG C, casting cooling water temperature is 25~35 DEG C, and cooling water gross pressure is 0.30MPa, is poured using level casting mode
Casting；Simultaneously according to the diameter range for drawing monofilament, speed, the cooling water pressure of crystallizing wheel are controlled, makes to come out to from crystallizing wheel and draws
Strand temperature on bridge is 530~570 DEG C；
9) continuous rolling：Alignment, cooling are carried out to strand made from step 8, controls the strand temperature into before rolling to be maintained at 530
~560 DEG C, the operation of rolling is lubricated and cooled down to roll and aluminium bar using emulsion；Emulsion pressure and flow are adjusted, is made
Miniaturization is drawn with aluminium bar finishing temperature≤300 DEG C；
10) aluminium bar is quenched：The miniaturization drawing come out with water or dilute emulsion to milling train with quench-quick cooling at
Reason, control aluminium rod surface temperature≤70 DEG C, to ensure the intensity of aluminium bar；
11) aluminium bar is cleaned：Before aluminium bar enters take-up frame or take-up reel, the water of aluminium rod surface is dried up with compressed air,
Keep the clean of aluminium bar and dry；
12) natural cooling：Gained miniaturization drawing in step 11 is placed on aluminium bar on place and carries out natural cooling processing.
Industrial Al99.70 fine aluminium is used in step 1, makes aluminium alloy prepared by the present invention that there is raw material supply to fill
Foot, the advantage such as cost is low, buying is convenient；Matrix alloy, the aluminum substrate ratio can also be used as using refined aluminium or high-purity grade of aluminium simultaneously
Common alumina-base material has higher quality, and the product being processed into is in electrical property and mechanical properties more advantage；
Aluminum substrate is put into smelting furnace in step 1, heating is allowed to fusing and is incubated at 750~760 DEG C, and aluminium is added afterwards
Ferroalloy, alusil alloy, aluminum-vanadium alloy, aluminum-boron alloy, are stirred well to uniform, standing insulation 45min, stir, stir
Time >=30min, sampled immediately after stirring, carry out the aluminium liquid constituent analysis of step 2, feed supplement is determined according to analysis result,
740~760 DEG C of its probe temperature；
In step 4, efficient injection refining agent is added in alloy melt, and is refined using high pure nitrogen, refining agent is used
Measure as 0.15wt%~0.4wt%, refine agent carrier high pure nitrogen, nitrogen gas purity is 99.999%, refining time is controlled 20
~30 minutes, nitrogen pressure was controlled in 10KPa~15KPa；
In step 4, temperature of aluminum liquid control is at 750 ± 10 DEG C before refining, and temperature of aluminum liquid control is at 740 ± 10 DEG C after refining；
Process of being skimmed in step 5 temperature of aluminum liquid is controlled at 730 ± 10 DEG C；
Aluminium liquid is toppled in step 7 and come out of the stove, then degasification is carried out by online off gas system, in order to control that gas is harmful in aluminium liquid
Body, is handled using off gas system, and is detected using hydrogen meter, gas content≤0.150ml/ after degasification
100g；
Slagging-off is filtered using twin-stage ceramic filter plate to aluminum solutions outside the stove in step 7, the ceramic filter
Hole the specification 40PPI and 60PPI of plate；
Roll and aluminium bar are lubricated and cooled down using conventional aluminium tandem rolling emulsion during continuous rolling in step 9,
Concentration of emulsion used is 12%~16%, and temperature is 65 DEG C, and pressure is 0.25MPa, rolls out the miniaturization drawing aluminium bar come straight
Footpath is 9.5mm, 300 DEG C of control aluminium bar finishing temperature ＜；
Step 11 aluminium rod surface is dried and cleaning uses compressed air, and pressure is 0.5~0.6MPa
Natural cooling time >=24 hour in step 12.
A kind of miniaturization drawing aluminum alloy materials, it is characterised in that：Silicon Si, iron Fe, vanadium V, boron are added in aluminum substrate
Each component mass percent is as follows in B, material：
Silicon Si：0.03%~0.08%；
Iron Fe：0.1%~0.2%；
Vanadium V：0.0001%~0.001%；
Boron：0.005%~0.010%；
Remaining is aluminium, and the mass percent of above-mentioned all components adds up to 100%.
Miniaturization drawing aluminium alloy formula disclosed above, uses Fe, Si, V, B for main adding ingredient, makes product
Recrystal grain is fined, and intensity, elongation are improved, with reference to certain manufacturing technique method, the aluminium alloy rod of preparation,
After wire drawing is verified, requirement is complied fully with.
Using the present invention after, its by the design to raw material it is preferred and it is reasonably combined use, improve aluminium base quality,
Aluminium intermediate alloy is selected in the characteristics of for industrial aluminium ingot chemical composition, rationally design, meanwhile, by melting, refining, casting
The control of technique such as make, roll, making the aluminium alloy rod that tensile strength, conductance all meet miniaturization drawing, what it was prepared
Aluminium alloy rod, after wire drawing is verified, complies fully with requirement, reduces processing cost, and the aluminium obtained is made using this method and close
Golden bar makes the recrystal grain of follow-up product fined, and intensity, elongation are improved.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the preparation method of the miniaturization drawing aluminium bar of the present invention；
Embodiment
A kind of preparation method of miniaturization drawing aluminium bar, is shown in Fig. 1：In advance make miniaturization drawing aluminum alloy materials into
The aluminium liquid of distribution ratio, it is ensured that aluminium liquid main component composition is Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~
0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；Efficient injection refining agent is passed through equipped with aluminium afterwards
Refined in the holding furnace of liquid in melt, it is Al >=98.70wt%, Si to adjust composition proportion in aluminium liquid after skimming again：
0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%, afterwards
External refining and slagging-off obtain clean aluminium liquid, and clean aluminium liquid is cast, progress after blank alignment afterwards to casting, cooling
Continuous rolling, formation aluminium bar, miniaturization drawing aluminium bar is obtained after quenching afterwards, cleaning, cooling.
Its specific preparation process is as follows：
1) raw material selection and melting：Raw material are tested, select the aluminium ingot of corresponding grade to carry out reasonably combined, throwing
Enter temperature of aluminum liquid≤760 DEG C in aluminium melting furnace melting, control stove；
2) aluminium liquid constituent analysis：By melted aluminium liquid or electrolysis raw aluminum liquid metaideophone to holding furnace, sampled after stirring
Quickly analyzed with direct-reading spectrometer, Al, Si, Fe, V and B content in detection solution；
3) Alloying Treatment：According to step 2 spectral test result, aluminium silicon, ferro-aluminum, the addition of aluminium boron intermediate alloy are calculated
Amount, control heat preserving furnace aluminum liquid temperature adds corresponding intermediate alloy at 740 ± 10 DEG C, and stirring makes aluminium liquid composition full and uniform,
The aluminium liquid main component is constituted：Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：
0.0001%~0.001wt%, B：0.005~0.010wt%；
4) refine：Complete after step 3, carried when temperature of aluminum liquid reaches 750 ± 10 DEG C with 99.999% high pure nitrogen
Body, efficient injection refining agent is passed through in holding furnace in melt and refined, and reaches the purified treatment of aluminium liquid degasification, removal of impurities, essence
Control refining agent is blown into during refining speed and the pressure of nitrogen；
5) skim：After the completion of step 4, aluminium liquid stands 5~10 minutes, opens holding furnace and skims and skimmed, will be floated over
Aluminium slag on aluminium liquid surface is cleaned out；
6) composition adjustment：Step 4,5 aluminium liquid will be completed 30~40 minutes are stood in holding furnace, be then sampled point
Analysis, constituent content is adjusted when deviateing, and confirms aluminium liquid into being grouped into：Al >=98.70wt%, Si：0.03~0.08wt%,
Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；
7) external refining and slagging-off：After the completion of step 6, when temperature of aluminum liquid reaches 740 ± 10 DEG C, you can come out of the stove, aluminium liquid
Out enter online depassing unit and filter by chute from holding furnace, carry out external refining, degasification again removes the gred, slagging-off
When need to from slagging-off instrument carry out；
8) continuously casting：Clean aluminium liquid after being refined again to step 7 carries out direct casting, and cast temperature is controlled 675
~695 DEG C, casting cooling water temperature is 25~35 DEG C, and cooling water gross pressure is 0.30MPa, is poured using level casting mode
Casting；Simultaneously according to the diameter range for drawing monofilament, speed, the cooling water pressure of crystallizing wheel are controlled, makes to come out to from crystallizing wheel and draws
Strand temperature on bridge is 530~570 DEG C；
9) continuous rolling：Alignment, cooling are carried out to strand made from step 8, controls the strand temperature into before rolling to be maintained at 530
~560 DEG C, the operation of rolling is lubricated and cooled down to roll and aluminium bar using emulsion；Emulsion pressure and flow are adjusted, is made
Miniaturization is drawn with aluminium bar finishing temperature≤300 DEG C；
10) aluminium bar is quenched：The miniaturization drawing come out with water or dilute emulsion to milling train with quench-quick cooling at
Reason, control aluminium rod surface temperature≤70 DEG C, to ensure the intensity of aluminium bar；
11) aluminium bar is cleaned：Before aluminium bar enters take-up frame or take-up reel, the water of aluminium rod surface is dried up with compressed air,
Keep the clean of aluminium bar and dry；
12) natural cooling：To step 11) gained miniaturization drawing is placed on place with aluminium bar and carries out natural cooling processing.
Industrial Al99.70 fine aluminium is used in step 1, makes aluminium alloy prepared by the present invention that there is raw material supply to fill
Foot, the advantage such as cost is low, buying is convenient；Matrix alloy, the aluminum substrate ratio can also be used as using refined aluminium or high-purity grade of aluminium simultaneously
Common alumina-base material has higher quality, and the product being processed into is in electrical property and mechanical properties more advantage；
Aluminum substrate is put into smelting furnace in step 1, heating is allowed to fusing and is incubated at 750~760 DEG C, and aluminium is added afterwards
Ferroalloy, alusil alloy, aluminum-vanadium alloy, aluminum-boron alloy, are stirred well to uniform, standing insulation 45min, stir, stir
Time >=30min, sampled immediately after stirring, carry out the aluminium liquid constituent analysis of step 2, feed supplement is determined according to analysis result,
740~760 DEG C of its probe temperature；
In step 4, efficient injection refining agent is added in alloy melt, and is refined using high pure nitrogen, refining agent is used
Measure as 0.15wt%~0.4wt%, refine agent carrier high pure nitrogen, nitrogen gas purity is 99.999%, refining time is controlled 20
~30 minutes, nitrogen pressure was controlled in 10KPa~15KPa；
In step 4, temperature of aluminum liquid control is at 750 ± 10 DEG C before refining, and temperature of aluminum liquid control is at 740 ± 10 DEG C after refining；
Process of being skimmed in step 5 temperature of aluminum liquid is controlled at 730 ± 10 DEG C；
Aluminium liquid is toppled in step 7 and come out of the stove, then degasification is carried out by online off gas system, in order to control that gas is harmful in aluminium liquid
Body, is handled using off gas system, and is detected using hydrogen meter, gas content≤0.150ml/ after degasification
100g；
Slagging-off is filtered using twin-stage ceramic filter plate to aluminum solutions outside the stove in step 7, the ceramic filter
Hole the specification 40PPI and 60PPI of plate；
Roll and aluminium bar are lubricated and cooled down using conventional aluminium tandem rolling emulsion during continuous rolling in step 9,
Concentration of emulsion used is 12%~16%, and temperature is 65 DEG C, and pressure is 0.25MPa, rolls out the miniaturization drawing aluminium bar come straight
Footpath is 9.5mm, 300 DEG C of control aluminium bar finishing temperature ＜；
Step 11) aluminium rod surface is dried and cleaning uses compressed air, and pressure is 0.5~0.6MPa
Natural cooling time >=24 hour in step 12.
A kind of miniaturization drawing aluminum alloy materials：Each group in silicon Si, iron Fe, vanadium V, boron, material is added in aluminum substrate
Divide mass percent as follows：
Silicon Si：0.03%~0.08%；
Iron Fe：0.1%~0.2%；
Vanadium V：0.0001%~0.001%；
Boron：0.005%~0.010%；
Remaining is aluminium, and the mass percent of above-mentioned all components adds up to 100%.
Miniaturization drawing aluminium alloy formula disclosed above, uses Fe, Si, V, B for main adding ingredient, makes product
Recrystal grain is fined, and intensity, elongation are improved, with reference to certain manufacturing technique method, the aluminium alloy rod of preparation,
After wire drawing is verified, requirement is complied fully with.
In normal production process, vanadium V must be controlled as a control element, because vanadium V can increase the resistance of aluminium bar
Rate, if control is too low, there is defect in casting cycle in miniaturization drawing aluminium bar, then occurs product in lower process and lacks
Fall into, have impact on the use of production, due to being mixed into boron simultaneously in the material, and it is 0.005%~0.010% to limit its weight, is made
Synergy can be had by obtaining 0.0001%~0.001% vanadium V and 0.005%~0.010% boron, improved casting and crystallized,
But on the other hand by according to metal theory, after general addition vanadium V and boron, the two combination reaction can directly occur, its boron
Can weaken for improving the synergy for crystallization of casting with vanadium V, according to technical staff's creative work, its control it is quiet in stove
On the premise of putting the time, it is ensured that one kind " meta-stable " of composition is changed in stove, matrix and compound in this metastable state aluminium liquid
Between one kind coexist, in follow-up casting, produced casting condition is otherwise varied with existing casting crystallization, meanwhile,
The formation of sediment when this casting condition improves composition crystallization and tending towards stability, it is this from " meta-stable " to stabilized
Condition is very crucial.
Specific embodiment is obtained：
Aluminium ingot selects trade mark Al99.70 remelted aluminum ingots, optimizes collocation and uses；
By the technological process of accompanying drawing 1, it is melting in 8t/h melting furnace that aluminium ingot is put into melting rate, when melting furnace aluminium liquid temperature
When spending >=720 DEG C, it is transferred to holding furnace and stirs and rapid temperature raising, then sampling is carried out quickly with direct-reading spectrometer in aluminium liquid
Al, Si, Fe, V, B content in analysis, detection solution.Fed intake total amount and each intermediate alloy composition meter according to assay, aluminium ingot
Aluminium silicon, ferro-aluminum, aluminium vanadium, the addition of aluminium boron intermediate alloy needed for calculating.When temperature of aluminum liquid is 740 ± 10 DEG C in holding furnace, plus
Enter aluminium silicon, ferro-aluminum, aluminium vanadium, aluminium boron intermediate alloy.After intermediate alloy dispensing is finished, melt in stove is sufficiently stirred for (artificial+
Electromagnetic agitation), mixing time >=30 minute make aluminium liquid composition uniform.
After the completion of stirring, the rapid temperature raising of aluminium liquid is refined, wherein high to 750 ± 10 DEG C using efficient injection refining agent
Effect injection refining agent main component be：Sodium chloride, potassium chloride, ice crystal, refining agent consumption are the 0.4wt%. of furnace charge total amount
Refining agent is blown into stove in aluminium liquid using the high pure nitrogen of purity 99.999% and refined, while being filled again to aluminium liquid
Divide stirring；After refining is finished, aluminium liquid is heated, melt stands 5~10 minutes, when temperature of aluminum liquid >=730 DEG C, open holding furnace
Skim and skimmed, the scum silica frost on aluminium liquid surface is taken off totally.After the completion of skimming, aluminium liquid is allowed to stand 30~40 in holding furnace
Minute, and temperature of aluminum liquid is kept at 740 ± 10 DEG C, then carrying out chemical composition to aluminium liquid sampling in stove quickly analyzes, and confirms aluminium
Liquefaction, which is studied, is grouped into Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~
0.001wt%, B：0.005~0.010wt%；
Sample position is at least places different at 3, and is evenly distributed, and such as sampling result is not inconsistent with mentioned component, Ying Jin
Row adjustment, stir again, stand after sampling analysis again.Aluminium liquid chemical composition is met the requirements, temperature is reached after 740 ± 10 DEG C, is opened
Stove is released.
The aluminium liquid come out from holding furnace enters online depassing unit and filter through chute, carries out external refining, melt
Slag treatment is removed again by the degassing processing again and filter intermediate grade ceramic filter of high pure nitrogen in online depassing unit,
Hole the specification 40PPI and 60PPI of ceramic filter plate, afterwards into upper casting ladle, lower casting ladle is flowed into through mozzle.Poured by control
Bag temperature of aluminum liquid, it is 675~695 DEG C to keep cast temperature, and casting cooling water temperature is 25~35 DEG C, and cooling water gross pressure is
0.30MPa；When it is 530-570 DEG C that the strand temperature come out from crystallizing wheel, which reaches, it is sent to straightener and carries out alignment；Then again
Into cooling duct device, by adjusting cooling valve, make into before rolling strand temperature control at 530~560 DEG C；Continuous rolling process
Middle that roll and aluminium bar are lubricated and cooled down using conventional aluminium tandem rolling emulsion, concentration of emulsion used is 14%, and temperature is 65 DEG C,
Pressure is 0.25MPa, rolls out the miniaturization a diameter of 9.5mm of drawing aluminium bar come, and control miniaturization, which is drawn, uses aluminium bar finish to gauge
300 DEG C of temperature finishing temperature ＜, the aluminium bar then come out to milling train rapidly carries out quenching cooling treatment, and quenching coolant-temperature gage is 30
DEG C, gross pressure is miniaturization drawings aluminium rod surface temperature≤70 DEG C after the completion of 300MPa. Quenching Treatments, through pressure for 0.5~
0.6MPa compressed airs are dried up, and natural cooling is carried out afterwards, and the natural cooling time is 25 hours.
By the research to melting technique, casting-rolling technology, the control to production process technology key parameter, with reference to aluminium base
The analysis of metallographic structure low power, as a result show, in process of production, the control of the hydrogen content of aluminium liquid is existed with aluminium bar for miniaturization drawing
0.15ml/100g, reasonable layout casting cooling water distribution, the crystallinity grade of control strand reaches one-level, is that miniaturization is drawn
System carries out auxiliary preparation with the production of aluminium bar.By entering to roll the key parameters such as temperature, concentration of emulsion used to rolling process
Control, the aluminium bar produced most can carefully meet wire broken rate in drawing 0.12mm, drawing process and be reduced to 1 time/110min.
The specific embodiment of the present invention is described in detail above, but content is only the preferable implementation of the invention
Example, it is impossible to be considered as the practical range for limiting the invention.All impartial changes made according to the invention application range
Change and improvement etc., all should still be belonged within this patent covering scope.
Claims (10)
1. a kind of preparation method of miniaturization drawing aluminium bar, it is characterised in that：Make miniaturization drawing aluminium alloy material in advance
Expect the aluminium liquid of composition proportion, it is ensured that aluminium liquid main component composition is Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1
~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；Efficient injection refining agent, which is passed through, afterwards is equipped with
Refined in the holding furnace of aluminium liquid in melt, it is Al >=98.70wt%, Si to adjust composition proportion in aluminium liquid after skimming again：
0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%, afterwards
External refining and slagging-off obtain clean aluminium liquid, and clean aluminium liquid is cast, progress after blank alignment afterwards to casting, cooling
Continuous rolling, formation aluminium bar, miniaturization drawing aluminium bar is obtained after quenching afterwards, cleaning, cooling.
2. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 1, it is characterised in that：Its specific prepares walks
It is rapid as follows：
1) raw material selection and melting：Raw material are tested, selects the aluminium ingot progress of corresponding grade reasonably combined, puts into molten
Temperature of aluminum liquid≤760 DEG C in aluminium stove melting, control stove；
2) aluminium liquid constituent analysis：By melted aluminium liquid or electrolysis raw aluminum liquid metaideophone to holding furnace, sampling is with directly after stirring
Read spectrometer quickly to be analyzed, Al, Si, Fe, V and B content in detection solution；
3) Alloying Treatment：According to step 2 spectral test result, aluminium silicon, ferro-aluminum, the addition of aluminium boron intermediate alloy, control are calculated
Heat preserving furnace aluminum liquid temperature processed adds corresponding intermediate alloy, stirring makes aluminium liquid composition full and uniform, described at 740 ± 10 DEG C
Aluminium liquid main component is constituted：Al >=98.70wt%, Si：0.03~0.08wt%, Fe：0.1~0.2wt%, V：0.0001%
~0.001wt%, B：0.005~0.010wt%；
4) refine：Complete after step 3, carrier is made with 99.999% high pure nitrogen when temperature of aluminum liquid reaches 750 ± 10 DEG C, will
Efficient injection refining agent is passed through in holding furnace to be refined in melt, is reached the purified treatment of aluminium liquid degasification, removal of impurities, is refined time control
Speed and the pressure of nitrogen that refining agent processed is blown into；
5) skim：After the completion of step 4, aluminium liquid stands 5~10 minutes, opens holding furnace and skims and skimmed, will float over aluminium liquid
Aluminium slag on surface is cleaned out；
6) composition adjustment：Step 4,5 aluminium liquid will be completed 30~40 minutes is stood in holding furnace, be then sampled analysis,
Constituent content is adjusted when deviateing, and confirms aluminium liquid into being grouped into：Al >=98.70wt%, Si：0.03~0.08wt%, Fe：
0.1~0.2wt%, V：0.0001%~0.001wt%, B：0.005~0.010wt%；
7) external refining and slagging-off：After the completion of step 6, when temperature of aluminum liquid reaches 740 ± 10 DEG C, you can come out of the stove, aluminium liquid is from guarantor
Warm stove out enters online depassing unit and filter by chute, carries out external refining, and degasification again removes the gred, and is needed during slagging-off
Carried out from slagging-off instrument；
8) continuously casting：Clean aluminium liquid after being refined again to step 7 carries out direct casting, and cast temperature is controlled 675~695
DEG C, casting cooling water temperature is 25~35 DEG C, and cooling water gross pressure is 0.30MPa, is cast using level casting mode；Together
When according to the diameter range for drawing monofilament, control the speed of crystallizing wheel, cooling water pressure, make to come out on access bridge from crystallizing wheel
Strand temperature is 530~570 DEG C；
9) continuous rolling：Alignment, cooling are carried out to strand made from step 8, control to be maintained at 530 into strand temperature before rolling~
560 DEG C, the operation of rolling is lubricated and cooled down to roll and aluminium bar using emulsion；Emulsion pressure and flow are adjusted, is made micro-
Refine drawing aluminium bar finishing temperature≤300 DEG C；
10) aluminium bar is quenched：The miniaturization drawing come out with water or dilute emulsion to milling train quench with aluminium bar-quick cooling at
Reason, control aluminium rod surface temperature≤70 DEG C, to ensure the intensity of aluminium bar；
11) aluminium bar is cleaned：Before aluminium bar enters take-up frame or take-up reel, the water of aluminium rod surface is dried up with compressed air, kept
The clean and drying of aluminium bar；
12) natural cooling：Gained miniaturization drawing in step 11 is placed on aluminium bar on place and carries out natural cooling processing.
3. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：By aluminium in step 1
In matrix input smelting furnace, heating is allowed to fusing and is incubated at 750~760 DEG C, and alfer, alusil alloy, aluminium are added afterwards
Vanadium alloy, aluminum-boron alloy, are stirred well to uniform, standing insulation 45min, stir, mixing time >=30min, stirring is equal
Sampled immediately after even, carry out the aluminium liquid constituent analysis of step 2, feed supplement is determined according to analysis result, its probe temperature 740~760
℃。
4. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：In step 4, closing
Golden melt adds efficient injection refining agent, and is refined using high pure nitrogen, refining agent consumption for 0.15wt%~
0.4wt%, refines agent carrier high pure nitrogen, nitrogen gas purity is 99.999%, and refining time is controlled 20~30 minutes, nitrogen pressure
Power is controlled in 10KPa~15KPa.
5. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：Aluminium liquid temperature before refining
Degree control is at 750 ± 10 DEG C, and temperature of aluminum liquid control is at 740 ± 10 DEG C after refining.
6. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：Skimmed in step 5
Process temperature of aluminum liquid is controlled at 730 ± 10 DEG C.
7. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：By aluminium in step 7
Liquid, which is toppled over, comes out of the stove, then carries out degasification by online off gas system, in order to control pernicious gas in aluminium liquid, is carried out using off gas system
Processing, and detected using hydrogen meter, gas content≤0.150ml/100g after degasification；Outside the stove in step 7
Slagging-off is filtered using twin-stage ceramic filter plate to aluminum solutions, hole the specification 40PPI and 60PPI of the ceramic filter plate.
8. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：It is continuous in step 9
Roll and aluminium bar are lubricated and cooled down using conventional aluminium tandem rolling emulsion in the operation of rolling, concentration of emulsion used is 12%~
16%, temperature is 65 DEG C, and pressure is 0.25MPa, rolls out the miniaturization a diameter of 9.5mm of drawing aluminium bar come, controls aluminium bar
300 DEG C of finishing temperature ＜.
9. a kind of preparation method of miniaturization drawing aluminium bar as claimed in claim 2, it is characterised in that：Step 11 aluminium bar table
Face is dried and cleaning uses compressed air, and pressure is 0.5~0.6MPa；Natural cooling time >=24 hour in step 12.
10. a kind of miniaturization drawing aluminum alloy materials, it is characterised in that silicon Si, iron Fe, vanadium V, boron are added in aluminum substrate,
Each component mass percent is as follows in material：
Silicon Si：0.03%~0.08%；
Iron Fe：0.1%~0.2%；
Vanadium V：0.0001%~0.001%；
Boron：0.005%~0.010%；
Remaining is aluminium, and the mass percent of above-mentioned all components adds up to 100%.
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