CN106435286A - Manufacturing method for extrusion electrician round aluminum rod - Google Patents
Manufacturing method for extrusion electrician round aluminum rod Download PDFInfo
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- CN106435286A CN106435286A CN201610903739.2A CN201610903739A CN106435286A CN 106435286 A CN106435286 A CN 106435286A CN 201610903739 A CN201610903739 A CN 201610903739A CN 106435286 A CN106435286 A CN 106435286A
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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
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a manufacturing method for an extrusion electrician round aluminum rod. The manufacturing method comprises the following steps that electrolytic aluminum liquid is refined to obtain refined aluminum liquid; and the refined aluminum liquid is cast and then rolled. According to the manufacturing method for the extrusion electrician round aluminum rod, the electrolytic aluminum liquid is used as a raw material, melting needed when an aluminum ingot is used as a raw material is avoided, the technological process is shortened, and therefore the production cost is reduced, and greater environment friendliness is achieved.
Description
Technical field
The present invention relates to the technical field of round aluminum rod, in particular to a kind of manufacture extruding round aluminum rod
Method.
Background technology
Round aluminum rod is mainly used in wires and cables industry, and its electrical property and mechanical performance are all kinds of aluminum core cable and line energy
The no key reached advanced world standards.
In prior art, extruding round aluminum rod generally use aluminium ingot, i.e. general aluminium ingot and aluminium scrap line first melt, then casting and
Rolling.Owing to aluminium ingot manufacture extruding round aluminum rod needs to dissolve, thus molten stove, continuous casting continuous rolling equipment can be increased, cause producing
Cost increases.In addition, cause secondary environmental pollution.
Content of the invention
In view of this, one aspect of the present invention is to provide a kind of manufacture method extruding round aluminum rod, this manufacture method
More environmental protection, cost is relatively low.
A kind of manufacture method extruding round aluminum rod, comprises the following steps：
Electrolytic aluminium liquid is refined, obtains refinery molten aluminium；And
Described refinery molten aluminium is cast, then rolls.
Further, in described electrolytic aluminium liquid, titanium, vanadium, manganese, the total content of chromium element are below 0.02wt%.
Further, the temperature of described refining is 730～750 DEG C.
Further, described refining is carried out in an inert atmosphere.
Further, also include carrying out borax treatment to electrolytic aluminium liquid before described refining.
Further, described borax treatment uses aluminium boron intermediate alloy.
Further, also include carrying out micronization processes to electrolytic aluminium liquid before described refining.
Further, described micronization processes uses rare earth intermediate alloy.
Further, after the step of described refining and casting step before also include removing electrolytic aluminium liquid online
Gas.
Further, the hydrogen content through the electrolytic aluminium liquid of described online degasification is below 0.15ml/100g.
The present invention extrudes the manufacture method of round aluminum rod, with electrolytic aluminium liquid as raw material, it is to avoid use aluminium ingot is raw material
Required fusing, shortens technological process, thus reduces production cost and more environmental protection.
Detailed description of the invention
For the ease of understanding the present invention, close embodiment below and further illustrate technical scheme.
As used herein, term：
" mass parts " refers to represent the basic measurement unit of the mass ratio relation of multiple component, and 1 part can represent arbitrary list
Position quality, as being expressed as 1g, it is possible to represents 2.689g etc..If we say that the mass parts of component A is a part, the matter of B component
Amount part is b part, then it represents that the quality of component A and mass ratio a of B component：b.Or ground, represents that the quality of component A is aK, B
The quality of component is bK (K is Arbitrary Digit, represents multiplying factor).Can not misread, and unlike mass fraction, all groups
The mass parts sum divided is not limited to the restriction of 100 parts.
" one ", " a kind of " and " described " are used interchangeably and refer to one or more.
"and/or" for represent the one or both of illustrated situation all it may happen that, for example, A and/or B includes (A
And B) and (A or B)；
In addition, all numerical value being comprised in the range of herein the scope that end points is stated being included this (for example, 1 to 10 bag
Include the 1.4th, the 1.9th, the 2.33rd, the 5.75th, 9.98 etc.).
In addition, the statement of herein " at least one " include one and above all numbers (for example, at least 2, at least
4, at least 6, at least 8, at least 10, at least 25, at least 50, at least 100 etc.).
The manufacture method of the extruding round aluminum rod of the present invention, comprises the following steps：
Electrolytic aluminium liquid is refined, obtains refinery molten aluminium；And
Described refinery molten aluminium is cast, then rolls.
Above-mentioned term " electrolytic aluminium liquid " refers to the liquid aluminium of the molten state using the preparation of electrolytic industry method prepared.This
Place, Aluminium Industry method is to use cryolite-alumina molten salt electrolysis, is i.e. solvent with molten cryolitic, and aluminum oxide is made
For solute, using carbon body as anode, aluminium liquid is as negative electrode, after being passed through powerful direct current, at 950～970 DEG C, in electrolysis
It is electrochemically reacted on the two poles of the earth in groove.
It (is usually located at the required temperature 950～970 of electrolysis owing to its temperature is higher when electrolytic aluminium liquid is extracted out from electrolytic cell
DEG C), the raw and auxiliary material water content required for electrolysis is higher, and aluminium liquid has adsorbed substantial amounts of hydrogen in a cell.Preferably, in essence
The hydrogen content of electrolytic aluminium liquid is below 0.15ml/100g after refining and before casting, such as 0.15ml/100g, 0.12ml/100g,
0.10ml/100g, 0.08ml/100g, 0.05ml/100g etc..Here, ml/100g refers to hydrogen contained in 100g aluminium phase
Long-pending.If the hydrogen content of the electrolytic aluminium liquid being used exceeds this value, it is possible to use known method to carry out degasification, so that its hydrogen content
Reach in above-mentioned scope.The method of degasification for example can use the mode of the online degasification of aluminium liquid of routine, hereinafter will describe in detail.
Additionally, other mode also can be used to reduce its hydrogen content, a kind of mode is, when transporting electrolytic aluminium liquid at aluminium
Last layer coverture is spread on liquid surface, on the one hand prevents oxidative slagging (slag inclusion can carry hydrogen), on the other hand prevent humid air with
Aluminium liquid contacts.Another mode is, uses siphon mode that electrolytic aluminium liquid imports smelting furnace, reduces aluminium liquid and air contact surfaces
Long-pending, avoid slag making and air-breathing as far as possible.Yet another approach is, when using electrolytic aluminium liquid ratio more than 60%, can suitably increase essence
Refining agent consumption and prolongation are dusted the time.
Based on the round aluminum rod obtaining high conductance, the trace element of electrolytic aluminium liquid is preferred with below 0.02wt%,
Such as 0.02wt%, 0.018wt%, 0.015wt%, 0.010wt%, 0.008wt%, 0.005wt% etc..Here, term is micro-
It is relatively small number of relative to the content outside host element (such as copper, silicon, magnesium, zinc, manganese) that secondary element refers to contained by aluminum metal
Element.
Above-mentioned trace element can list titanium, vanadium, manganese, chromium, iron, silicon, strontium, zirconium etc., preferably titanium, vanadium, manganese, chromium etc..
The purpose of above-mentioned refining is to remove the objectionable impurities in aluminium liquid, improving the degree of purity of aluminium liquid.The operation of refining
Mode can use holding furnace to refine.Should heat in advance during this holding furnace furnace charge, entering stove aluminium material must not have clod, sand
Stone, non-aluminum metal and other foreign material.According to holding furnace capacity, carry out the shove charge work of furnace charge, with under fire door of scratching in the ashes along 5 centimeters be
Safety standard, and watch whether eye of releasing blocks up, it is to avoid aluminium hydrorrhea goes out.
Use holding furnace refining temperature can be 730～750 DEG C, such as 730 DEG C, 732 DEG C, 735 DEG C, 740 DEG C, 745
DEG C, 748 DEG C, 750 DEG C etc..
Refining time can elect according to actual conditions, can be for example 5～15min, as 5min, 6min, 8min,
10min, 12min, 14min or 15min etc..
Use can carrying out in adding liquid inert gas of holding furnace refining, prevent oxygen from entering electrolytic aluminium liquid to play
The oxidation to it in refining.Here, inert gas can be argon gas, helium.Except of course that outside liquid inert gas, also can use
Post-decompression inert gas.Except this, except inert gas, yet can use the reducibility gas such as nitrogen, nitrogen can be with liquid here
State, it is possible to be gaseous state.In the embodiment that above-mentioned inert gas or nitrogen are gaseous state, addition ground flux can be assisted, to lead to
Cross the mode being blown into and gaseous inert gas or nitrogen are carried out mixing dispersion.The consumption of ground flux can such as 0.1～
0.15%, for example the 0.1%th, the 0.11%th, the 0.12%th, the 0.125%th, the 0.14%th, the 0.145%th, 0.15% etc., the now pressure of gas
Can be 0.1～0.12MPa, such as 0.1MPa, 0.105MPa, 0.108MPa, 0.11MPa, 0.115MPa, 0.118MPa,
0.12MPa etc..
The refining agent of routine can be used as refining agent, no longer limit in this.The consumption of refining agent is not construed as limiting, and can use
Consumption conventional in prior art.
Certainly, before holding furnace refines, also preliminary purification can be carried out in aluminium water bag.Specific practice is, electrolytic aluminium liquid
After injecting opening bag, with bell jar by the depths of flux press-in aluminium liquid, stir everywhere equably, allow melt be fully contacted with aluminium liquid,
By the suction-operated of flux, dissolution, chemical action, the impurity drag-out in aluminium liquid, treat that bubble stops than liquid of emerging
And when, fished for by strainer swim in liquid and impurity.Flux consumption 0.1～0.2%, purification temperature is 730～750 DEG C, can go
Except the impurity of more than 60%.
Before the step of above-mentioned refining, also include carrying out borax treatment to electrolytic aluminium liquid.Borax treatment i.e. boronising, boronation,
Boron hardens, and its effect is the method making boron element penetrate into metal surface.By the boron being formed on its surface after steel boronation
Change layer and there is the special performances such as the wearability of height, corrosion stability, non-oxidizability and high temperature hardness.
Above-mentioned borax treatment can use aluminium boron intermediate alloy.Aluminium boron intermediate alloy can use preparation side known in the art
Formula obtains, for example, can use the thermit reduction smelting technology of routine, i.e. add the compound of boron in aluminium liquid, utilize aluminium
Hot method makes boron reduce.Here the compound of boron can be the salt (potassium fluoborate) etc. of the oxide of boron or boron.
Also include before refining carrying out micronization processes to electrolytic aluminium liquid.Here, micronization processes i.e. crystal grain micronization processes.Refinement
The effect processing is, the tendentiousness that during solidification, crackle is formed is little, can allow to use higher casting speed, thus increase melting with
The production capacity of Casting Equipment so that the not fusion cold shut in casting reduces, and during such machining, the cutting output of metal subtracts
Few so that yield rate improves.On the other hand, there is the uniformly tiny casting rented, reduce casting stress so that the plasticity of casting
Change ability improves.Another further aspect, can improve the mechanical performance of cast article.
Micronization processes uses rare earth intermediate alloy.Here, rare earth alloy can use in the aluminium rare earth element that this area is conventional
Between alloy, or the preparation method of the rare earth element intermediate alloy of routine obtains.The system of conventional rare earth element intermediate alloy
Preparation Method can list such as periodical literature " external rare earth intermediate alloy and the application in iron and steel, Gao Panming, rare earth and niobium 1974
The 2nd phase of year " is described.
After the process of refining terminates, can skim within standing half an hour, be further 3～5min, for example
3min, 4min or 5min etc..
After skimming, can carry out standing insulation.Herein, standing is to utilize the proportion official post between melt and field trash to press from both sides
Foreign material sedimentation or floating, thus the purpose purifying further up to aluminium liquid.The temperature standing insulation controls 730～750 DEG C of guarantors
Temperature, such as 730 DEG C, 732 DEG C, 735 DEG C, 740 DEG C, 745 DEG C, 748 DEG C, 750 DEG C etc..Stand insulation time can 30 minutes with
On, production of just releasing.
Also can carry out online degasification after standing insulation.Electrolytic aluminium liquid flows in depassing unit case, passes through rotary blade
Inert gas disperse is entered in aluminium liquid, float with gas and take the hydrogen in melt out of liquid aluminum, it is achieved continuous online degasification
Purpose.Online degasification with the hydrogen content of the electrolytic aluminium liquid after this online degasification as 0.15ml/100g below be as the criterion.
The mode that above-mentioned casting and rolling all can use this area conventional is carried out, and no longer describes in detail in this.
The present invention does not addresses part and is applicable to prior art.
The specific embodiment of the present invention is given below, but specific embodiment is merely to be described in further detail this explanation,
It is not limiting as the claims of the present patent application.
Embodiment 1
Step one, melt treatment.Specifically, to insulation furnace charge when should heat in advance, enter stove aluminium material must not have clod,
Sandstone, non-aluminum metal and other foreign material.According to holding furnace capacity, carry out the shove charge work of furnace charge, with under fire door of scratching in the ashes along 5 centimeters
For safety standard, and watch whether eye of releasing blocks up, it is to avoid aluminium hydrorrhea goes out.Temperature of aluminum liquid controls at about 750 DEG C.
Step 2, micronization processes borax treatment.Specifically, aluminium boron intermediate alloy, rare earth intermediate alloy etc., in putting into stove
When, it is impossible to concentrate at one, stir back and forth with stirring tool after melting 10 minutes and furnace bottom does not stay dead angle so that it is composition is uniform.
When temperature of aluminum liquid is down to 730 DEG C, perform next procedure.
Step 3, refining.Specifically, temperature of aluminum liquid controls when 730 DEG C, carries out melt treatment to aluminum solutions.Use
Aluminium liquid is processed by more than 99.99% high-purity liquid argon and powdery refining agent, must not use the refining agent of humidity, not stay dead angle,
After refining completes, continuing to use high-purity liquid argon to carry out degasification, liquid level stirs≤20cm.
Step 4, skim.Specifically, after Jing Lian, stand 3 minutes, with slag-off machine, aluminium liquid surface scum clawed.When taking off by
In slightly stop to outward, when taking off slope in stove gate, allow the aluminium liquid taken out of pass back in stove, then scum silica frost taken off outside coming out of the stove,
Skim and want thoroughly, totally.Skim end, in stove, uniformly spread one layer of coverture.
Step 5, standing insulation.After terminating specifically, skim, temperature of aluminum liquid controls 730 DEG C of insulations, and aluminium liquid stands 30
More than Fen Zhong, production of just releasing.
Step 6, online degasification.Specifically, aluminium liquid flow enters in depassing unit case, by rotary blade by inert gas more
Dissipate and enter in aluminium liquid, float with gas and take the hydrogen in melt out of liquid aluminum, it is achieved the purpose of online degasification continuously.Hydrogen content exists
Every below 100g aluminium 0.15ml.
Now using two-stage filtering device to carry out efficient impurity removal, filtering accuracy is higher, beneficially Alloying Treatment, this device band
Electrical heating, temperature automatic control, prevent temperature of aluminum liquid to fluctuate.
Step 7, in casting process, to correctly lay ceramic filter plate, it is ensured that aluminium liquid passes through filter plate completely.
The various use instruments contacting with aluminium water, it is necessary to keep being dried.Employing level is cast, and makes aluminium liquid stably enter crystallization cavity, no
Produce turbulent flow and turbulent flow.In casting cycle, control cast temperature stabilizes it in prescribed limit.Strand is pulled out by casting machine
After, should cut off before sending into milling train not less than 30 meters until cast bar does not has the bad defects such as pore, crackle, ear, burr.Big behaviour
Station personnel, make it should be appreciated that casting machine speed and rolling mill speed cooperate according to producing product type control electric current when operation
Aluminium bar steady quality.
Step 8, rolling.Specifically, in production process, discovery aluminium bar has the wrong circle of outward appearance, and stuck scar or peeling triangle etc. are bad
Defect, should stop production adjustment or replacing in time.Mill lubrication liquid use aluminium bar rolling emulsion, often detect according to Production requirement and
Supplementing, control aluminium rod surface is without greasy dirt.
Step 9, take-up.Specifically, extruding round aluminum rod is imported take-up bend pipe by milling train outlet, and through quenching continuously
Fire, cleaning device, by aluminium bar around lever apparatus take-up lopping, finishing temperature control is within claimed range.Little operating desk personnel are controlled
Make often dish aluminium alloy rod weight and flat appearance.Receiving row should be neat, does not allow kink or random line.
Step 10, inspection warehouse-in.Specifically, check that presentation quality has zero defect, bottom every product and top is entered twice
Row mechanical property and electrical property detection, inspection data fit standard warehouse-in.
Embodiment 2
Step one, melt treatment.Specifically, to insulation furnace charge when should heat in advance, enter stove aluminium material must not have clod,
Sandstone, non-aluminum metal and other foreign material.According to holding furnace capacity, carry out the shove charge work of furnace charge, with under fire door of scratching in the ashes along 5 centimeters
For safety standard, and watch whether eye of releasing blocks up, it is to avoid aluminium hydrorrhea goes out.Temperature of aluminum liquid controls at about 750 DEG C.
Step 2, micronization processes borax treatment.Specifically, aluminium boron intermediate alloy, rare earth intermediate alloy etc., in putting into stove
When, it is impossible to concentrate at one, stir back and forth with stirring tool after melting 10 minutes and furnace bottom does not stay dead angle so that it is composition is uniform.
When temperature of aluminum liquid is down to 750 DEG C, perform next procedure.
Step 3, refining.Specifically, temperature of aluminum liquid controls when 750 DEG C, carries out melt treatment to aluminum solutions.Use
Aluminium liquid is processed by more than 99.99% high-purity liquid argon and powdery refining agent, must not use the refining agent of humidity, not stay dead angle,
After refining completes, continuing to use high-purity liquid argon to carry out degasification, liquid level stirs≤20cm.
Step 4, skim.Specifically, after Jing Lian, stand 3 minutes, with slag-off machine, aluminium liquid surface scum clawed.When taking off by
In slightly stop to outward, when taking off slope in stove gate, allow the aluminium liquid taken out of pass back in stove, then scum silica frost taken off outside coming out of the stove,
Skim and want thoroughly, totally.Skim end, in stove, uniformly spread one layer of coverture.
Step 5, standing insulation.After terminating specifically, skim, temperature of aluminum liquid controls 750 DEG C of insulations, and aluminium liquid stands 30
More than Fen Zhong, production of just releasing.
Step 6, online degasification.Specifically, aluminium liquid flow enters in depassing unit case, by rotary blade by inert gas more
Dissipate and enter in aluminium liquid, float with gas and take the hydrogen in melt out of liquid aluminum, it is achieved the purpose of online degasification continuously.Hydrogen content exists
Every below 100g aluminium 0.15ml.
Now using two-stage filtering device to carry out efficient impurity removal, filtering accuracy is higher, beneficially Alloying Treatment, this device band
Electrical heating, temperature automatic control, prevent temperature of aluminum liquid to fluctuate.
Step 7, in casting process, to correctly lay ceramic filter plate, it is ensured that aluminium liquid passes through filter plate completely.
The various use instruments contacting with aluminium water, it is necessary to keep being dried.Employing level is cast, and makes aluminium liquid stably enter crystallization cavity, no
Produce turbulent flow and turbulent flow.In casting cycle, control cast temperature stabilizes it in prescribed limit.Strand is pulled out by casting machine
After, should cut off before sending into milling train not less than 30 meters until cast bar does not has the bad defects such as pore, crackle, ear, burr.Big behaviour
Station personnel, make it should be appreciated that casting machine speed and rolling mill speed cooperate according to producing product type control electric current when operation
Aluminium bar steady quality.
Step 8, rolling.Specifically, in production process, discovery aluminium bar has the wrong circle of outward appearance, and stuck scar or peeling triangle etc. are bad
Defect, should stop production adjustment or replacing in time.Mill lubrication liquid use aluminium bar rolling emulsion, often detect according to Production requirement and
Supplementing, control aluminium rod surface is without greasy dirt.
Step 9, take-up.Specifically, extruding round aluminum rod is imported take-up bend pipe by milling train outlet, and through quenching continuously
Fire, cleaning device, by aluminium bar around lever apparatus take-up lopping, finishing temperature control is within claimed range.Little operating desk personnel are controlled
Make often dish aluminium alloy rod weight and flat appearance.Receiving row should be neat, does not allow kink or random line.
Step 10, inspection warehouse-in.Specifically, check that presentation quality has zero defect, bottom every product and top is entered twice
Row mechanical property and electrical property detection, inspection data fit standard warehouse-in.
Embodiment 3
Step one, melt treatment.Specifically, to insulation furnace charge when should heat in advance, enter stove aluminium material must not have clod,
Sandstone, non-aluminum metal and other foreign material.According to holding furnace capacity, carry out the shove charge work of furnace charge, with under fire door of scratching in the ashes along 5 centimeters
For safety standard, and watch whether eye of releasing blocks up, it is to avoid aluminium hydrorrhea goes out.Temperature of aluminum liquid controls at about 750 DEG C.
Step 2, micronization processes borax treatment.Specifically, aluminium boron intermediate alloy, rare earth intermediate alloy etc., in putting into stove
When, it is impossible to concentrate at one, stir back and forth with stirring tool after melting 10 minutes and furnace bottom does not stay dead angle so that it is composition is uniform.
When temperature of aluminum liquid is down to 740 DEG C, perform next procedure.
Step 3, refining.Specifically, temperature of aluminum liquid controls when 740 DEG C, carries out melt treatment to aluminum solutions.Use
Aluminium liquid is processed by more than 99.99% high-purity liquid argon and powdery refining agent, must not use the refining agent of humidity, not stay dead angle,
After refining completes, continuing to use high-purity liquid argon to carry out degasification, liquid level stirs≤20cm.
Step 4, skim.Specifically, after Jing Lian, stand 4 minutes, with slag-off machine, aluminium liquid surface scum clawed.When taking off by
In slightly stop to outward, when taking off slope in stove gate, allow the aluminium liquid taken out of pass back in stove, then scum silica frost taken off outside coming out of the stove,
Skim and want thoroughly, totally.Skim end, in stove, uniformly spread one layer of coverture.
Step 5, standing insulation.After terminating specifically, skim, temperature of aluminum liquid controls 740 DEG C of insulations, and aluminium liquid stands 30
More than Fen Zhong, production of just releasing.
Step 6, online degasification.Specifically, aluminium liquid flow enters in depassing unit case, by rotary blade by inert gas more
Dissipate and enter in aluminium liquid, float with gas and take the hydrogen in melt out of liquid aluminum, it is achieved the purpose of online degasification continuously.Hydrogen content exists
Every below 100g aluminium 0.15ml.
Now using two-stage filtering device to carry out efficient impurity removal, filtering accuracy is higher, beneficially Alloying Treatment, this device band
Electrical heating, temperature automatic control, prevent temperature of aluminum liquid to fluctuate.
Step 7, in casting process, to correctly lay ceramic filter plate, it is ensured that aluminium liquid passes through filter plate completely.
The various use instruments contacting with aluminium water, it is necessary to keep being dried.Employing level is cast, and makes aluminium liquid stably enter crystallization cavity, no
Produce turbulent flow and turbulent flow.In casting cycle, control cast temperature stabilizes it in prescribed limit.Strand is pulled out by casting machine
After, should cut off before sending into milling train not less than 30 meters until cast bar does not has the bad defects such as pore, crackle, ear, burr.Big behaviour
Station personnel, make it should be appreciated that casting machine speed and rolling mill speed cooperate according to producing product type control electric current when operation
Aluminium bar steady quality.
Step 8, rolling.Specifically, in production process, discovery aluminium bar has the wrong circle of outward appearance, and stuck scar or peeling triangle etc. are bad
Defect, should stop production adjustment or replacing in time.Mill lubrication liquid use aluminium bar rolling emulsion, often detect according to Production requirement and
Supplementing, control aluminium rod surface is without greasy dirt.
Step 9, take-up.Specifically, extruding round aluminum rod is imported take-up bend pipe by milling train outlet, and through quenching continuously
Fire, cleaning device, by aluminium bar around lever apparatus take-up lopping, finishing temperature control is within claimed range.Little operating desk personnel are controlled
Make often dish aluminium alloy rod weight and flat appearance.Receiving row should be neat, does not allow kink or random line.
Step 10, inspection warehouse-in.Specifically, check that presentation quality has zero defect, bottom every product and top is entered twice
Row mechanical property and electrical property detection, inspection data fit standard warehouse-in.
Embodiment 4
Step one, melt treatment.Specifically, to insulation furnace charge when should heat in advance, enter stove aluminium material must not have clod,
Sandstone, non-aluminum metal and other foreign material.According to holding furnace capacity, carry out the shove charge work of furnace charge, with under fire door of scratching in the ashes along 5 centimeters
For safety standard, and watch whether eye of releasing blocks up, it is to avoid aluminium hydrorrhea goes out.Temperature of aluminum liquid controls at about 750 DEG C.
Step 2, micronization processes borax treatment.Specifically, aluminium boron intermediate alloy, rare earth intermediate alloy etc., in putting into stove
When, it is impossible to concentrate at one, stir back and forth with stirring tool after melting 10 minutes and furnace bottom does not stay dead angle so that it is composition is uniform.
When temperature of aluminum liquid is down to 750 DEG C, perform next procedure.
Step 3, refining.Specifically, temperature of aluminum liquid controls when 740 DEG C, carries out melt treatment to aluminum solutions.Use
Aluminium liquid is processed by more than 99.99% high-purity liquid argon and powdery refining agent, must not use the refining agent of humidity, not stay dead angle,
After refining completes, continuing to use high-purity liquid argon to carry out degasification, liquid level stirs≤20cm.
Step 4, skim.Specifically, after Jing Lian, stand 5 minutes, with slag-off machine, aluminium liquid surface scum clawed.When taking off by
In slightly stop to outward, when taking off slope in stove gate, allow the aluminium liquid taken out of pass back in stove, then scum silica frost taken off outside coming out of the stove,
Skim and want thoroughly, totally.Skim end, in stove, uniformly spread one layer of coverture.
Step 5, standing insulation.After terminating specifically, skim, temperature of aluminum liquid controls 730 DEG C of insulations, and aluminium liquid stands 30
More than Fen Zhong, production of just releasing.
Step 6, online degasification.Specifically, aluminium liquid flow enters in depassing unit case, by rotary blade by inert gas more
Dissipate and enter in aluminium liquid, float with gas and take the hydrogen in melt out of liquid aluminum, it is achieved the purpose of online degasification continuously.Hydrogen content exists
Every below 100g aluminium 0.15ml.
Now using two-stage filtering device to carry out efficient impurity removal, filtering accuracy is higher, beneficially Alloying Treatment, this device band
Electrical heating, temperature automatic control, prevent temperature of aluminum liquid to fluctuate.
Step 7, in casting process, to correctly lay ceramic filter plate, it is ensured that aluminium liquid passes through filter plate completely.
The various use instruments contacting with aluminium water, it is necessary to keep being dried.Employing level is cast, and makes aluminium liquid stably enter crystallization cavity, no
Produce turbulent flow and turbulent flow.In casting cycle, control cast temperature stabilizes it in prescribed limit.Strand is pulled out by casting machine
After, should cut off before sending into milling train not less than 30 meters until cast bar does not has the bad defects such as pore, crackle, ear, burr.Big behaviour
Station personnel, make it should be appreciated that casting machine speed and rolling mill speed cooperate according to producing product type control electric current when operation
Aluminium bar steady quality.
Step 8, rolling.Specifically, in production process, discovery aluminium bar has the wrong circle of outward appearance, and stuck scar or peeling triangle etc. are bad
Defect, should stop production adjustment or replacing in time.Mill lubrication liquid use aluminium bar rolling emulsion, often detect according to Production requirement and
Supplementing, control aluminium rod surface is without greasy dirt.
Step 9, take-up.Specifically, extruding round aluminum rod is imported take-up bend pipe by milling train outlet, and through quenching continuously
Fire, cleaning device, by aluminium bar around lever apparatus take-up lopping, finishing temperature control is within claimed range.Little operating desk personnel are controlled
Make often dish aluminium alloy rod weight and flat appearance.Receiving row should be neat, does not allow kink or random line.
Step 10, inspection warehouse-in.Specifically, check that presentation quality has zero defect, bottom every product and top is entered twice
Row mechanical property and electrical property detection, inspection data fit standard warehouse-in.
In prior art, aluminium ingot manufacture extruding round aluminum rod needs to dissolve, and increases molten stove, continuous casting continuous rolling equipment, increases
Business burden, and cause secondary environmental pollution, restricted by environmental protection, soil, production region again.The manufacture method of the present invention can collect
Reduction produces, and allows extruding industry benefit from it in environmental protection, the production link such as region restriction, production cost.
Owing to the number range of each technological parameter involved in the present invention can not all embody in the above-described embodiments,
As long as but the completely envisioned any numerical value falling in this number range above-mentioned of those skilled in the art all can implement this
Invention, also includes any combination of occurrence in the range of some numerical value certainly.Herein, the consideration for length, eliminate to
Going out the embodiment of occurrence in certain one or more number range, this disclosure being not to be construed as technical scheme is not filled
Point.
Applicant states, the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, i.e. do not mean that the present invention have to rely on above-mentioned in detail
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The equivalence of each raw material to product of the present invention is replaced and the interpolation of auxiliary element, concrete mode selection etc., falls in the protection of the present invention
In the range of.
Claims (10)
1. the manufacture method extruding round aluminum rod, it is characterised in that comprise the following steps：
Electrolytic aluminium liquid is refined, obtains refinery molten aluminium；And
Described refinery molten aluminium is cast, then rolls.
2. manufacture method according to claim 1, it is characterised in that the titanium of described electrolytic aluminium liquid, vanadium, manganese, chromium element are total
Content is below 0.02wt%.
3. manufacture method according to claim 1 and 2, it is characterised in that the temperature of described refining is 730～750 DEG C.
4. the manufacture method according to claims 1 to 3 any one, it is characterised in that described refining is adding liquid lazy
Property gas is carried out.
5. the manufacture method according to Claims 1-4 any one, it is characterised in that it is right also to include before described refining
Electrolytic aluminium liquid carries out borax treatment.
6. manufacture method according to claim 5, it is characterised in that described borax treatment uses aluminium boron intermediate alloy.
7. the manufacture method according to claim 1 to 6 any one, it is characterised in that it is right also to include before described refining
Electrolytic aluminium liquid carries out micronization processes.
8. manufacture method according to claim 7, it is characterised in that described micronization processes uses rare earth intermediate alloy.
9. the manufacture method according to claim 1 to 8 any one, it is characterised in that after the step of described refining and
Also include carrying out online degasification to electrolytic aluminium liquid before the step of casting.
10. manufacture method according to claim 9, it is characterised in that through electrolytic aluminium liquid hydrogeneous of described online degasification
Amount is below 0.15ml/100g.
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