CN106756150A - The method that electromagnetic agitation melting refining aluminium alloy is closed using furnace for intermediate frequency furnace smelting duplex - Google Patents

The method that electromagnetic agitation melting refining aluminium alloy is closed using furnace for intermediate frequency furnace smelting duplex Download PDF

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Publication number
CN106756150A
CN106756150A CN201611141453.1A CN201611141453A CN106756150A CN 106756150 A CN106756150 A CN 106756150A CN 201611141453 A CN201611141453 A CN 201611141453A CN 106756150 A CN106756150 A CN 106756150A
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aluminium alloy
furnace
refining
alloy melt
frequency
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CN106756150B (en
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杨叶伟
江俊
周金全
段开旺
陈本松
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Yunnan Yunlv Ruixin Aluminum Co Ltd
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Yunnan Yunlv Ruixin Aluminum Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/06Making alloys with the use of special agents for refining or deoxidising
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent

Abstract

The method that electromagnetic agitation melting refining aluminium alloy is closed using furnace for intermediate frequency furnace smelting duplex, first adds solid-state intermediate alloy and electrolysis raw aluminum liquid in intermediate frequency furnace, opens electromagnetic agitation and heater, and rapid melting forms middle aluminium alloy melt;Raw aluminum liquid siphon is introduced into smelting furnace, keep 730 DEG C~760 DEG C of raw aluminum liquid temperature, middle aluminium alloy melt in intermediate frequency furnace is transported into smelting furnace, open the electromagnetic mixing apparatus of melting furnace bottom, middle aluminium alloy melt is uniformly fully incorporated raw aluminum liquid, form the qualified aluminium alloy melt of chemical composition;To slagging agent is added in aluminium alloy melt in smelting furnace, removing impurity of skimming;Being blown into refining agent by argon gas to the aluminium alloy melt for taking off slag again carries out injection refining, slagging agent is added again and is skimmed, and obtains pure aluminium alloy melt;Chute is transferred to afterwards delivers to casting.It is short route of the present invention, efficient, environment-friendly, easy to operate, it is suitable to the melting refining of small lot, multi-series and high-quality aluminum alloy.

Description

The method that electromagnetic agitation melting refining aluminium alloy is closed using intermediate frequency furnace-smelting furnace duplex
Technical field
The present invention relates to aluminium alloy smelting method and technology field, more particularly to electromagnetism is closed using intermediate frequency furnace-smelting furnace duplex The method of stir-melting refining aluminium alloy.
Technical background
Traditional aluminium alloy smelting refinery practice is typically carried out in smelting furnace, and ordinary circumstance is to inject a large amount of in smelting furnace Aluminium liquid, adding the solid-state intermediate alloy containing different elements carries out dispensing, by fuel oil or gas high-temperature flame by aluminium alloy Melt is heated to melting refining temperature, then adds grain refiner and refining agent to carry out injection refining simultaneously in aluminium liquid, is Casting process provides composition, temperature, clarity qualified aluminium alloy melt.Because most of aluminium alloy element fusing points are higher, Aluminum melt is added to there are problems that fusing time is long and easily produces with elemental metal state, therefore conventional aluminum is closed Typically to be added in golden melting refining process intermediate alloy prepare needed for alloy product, but during need to intermediate alloy , there is energy resource consumption greatly in refuse, intensification, pollute environment, and operational sequence is complicated, and smelting time is long, and production efficiency is low to be lacked Point, is not suitable with multi-series, small lot, high-quality aluminum alloy production.Therefore, it is necessary to be improved prior art.
The content of the invention
It is an object of the invention to solve the deficiency that above-mentioned prior art is present, there is provided a kind of short route, efficient, environment friend Method that is good, easy to operate, adapting to small lot, multi-series and high-quality aluminum alloy melting refining.
The purpose of the present invention is achieved through the following technical solutions:
The method that electromagnetic agitation melting refining aluminium alloy is closed using intermediate frequency furnace-smelting furnace duplex, is comprised the following steps:
(1) according to alloy product component requirements, in intermediate frequency furnace add containing different elements solid-state intermediate alloy and Electrolysis raw aluminum liquid, opens intermediate frequency furnace electromagnetic agitation and heater, keeps intermediate frequency furnace frequency 350Hz and temperature 730 DEG C~760 DEG C so that solid-state intermediate alloy rapid melting forms the middle aluminium alloy melt for meeting aluminium alloy smelting refining;
(2) raw aluminum liquid for producing aluminium cell directly introduces smelting furnace by siphon mode, keeps raw aluminum liquid temperature 730 DEG C~760 DEG C, the middle aluminium alloy melt in intermediate frequency furnace is transported into smelting furnace by chute, open melting furnace bottom and set Electromagnetic mixing apparatus, keep melting furnace bottom electromagnetic mixing apparatus frequency 350Hz, make middle aluminium alloy melt in low frequency electromagnetic It is uniform in the case of stirring sufficiently to incorporate raw aluminum liquid, form the qualified aluminium alloy melt of chemical composition;
(3) to slagging agent is added in aluminium alloy melt in smelting furnace, operation of skimming is carried out, in removing aluminium alloy melt Impurity;Being blown into refining agent by argon gas to the aluminium alloy melt for taking off slag again after standing 10min carries out injection refining, adds again Slagging agent carries out operation of skimming, and obtains the pure aluminium alloy melt that casting is required that meets;
(4) it is transferred to chute after pure aluminium alloy melt is stood and delivers to casting.
Above-mentioned steps (1) the solid-state intermediate alloy containing different elements contains solid-state silicon, metal copper.Step (3) the total consumption of the slagging agent that is added twice in is controlled between 1.0~2.0kg/t.Al, injection refining use purity for 99.99% argon gas is blown into refining agent, is blown into argon pressure for 0.4MPa, and refining temperature is controlled between 730 DEG C~760 DEG C, Refining time 15min, refining agent consumption is controlled between 1.5~3.0kg/t.Al.Aluminium alloy melt dwell temperature in step (4) Between 720 DEG C~740 DEG C, time of repose is 20min for control.
The present invention compared with prior art, has the advantages that:
(1) method that the utilization intermediate frequency furnace that the present invention is provided-smelting furnace duplex closes electromagnetic agitation melting refining aluminium alloy, fills Divide the characteristic that fusing metal can be quickly heated using intermediate frequency furnace, aluminium in the middle of conventional fuel oil heating melting solid has been greatly shortened The production technology of alloy.The method has not only reformed traditional aluminium alloy smelting idea, also solve smelting aluminum to silicon high, high-copper, The series of problems such as infusibility, the skewness that aluminium alloy is melted using fuel Heating in the middle of the trades mark such as manganese high.Smelting time is by original Foreshorten to 0.5h within 3 hours, production efficiency is greatly improved, while energy resource consumption is also greatly reduced, reduce fuel consumption, Preserve the ecological environment, save production cost.
(2) present invention makes full use of intermediate frequency furnace intermediate frequency electromagnetic to stir, and dissolves the alloy constituent element such as solid-state silicon, metallic copper element More abundant, composition evenly, and realizes that intermediate frequency furnace electromagnetic agitation and middle aluminium alloy melt flowing are capable of on-line.It is simultaneously sharp The low frequency electromagnetic set with melting furnace bottom is stirred realizes that the staggered form of aluminium alloy melt is stirred, and realizes intermediate frequency furnace-smelting furnace Duplex closes the utilization of electromagnetic agitation, solves the problems, such as that aluminium alloy melt is locally uneven, effectively improves the uniform journey of alloy melt Degree, refining aluminum alloy melt crystal grain, final improve product quality.
(3) the inventive method can not only realize that aluminium alloy is mass produced, using the small characteristic of 5 tons of intermediate frequency furnace batches, pin Market user is required, production multi-series, small lot, the alloy product of high-quality.With production product structure it is flexible and changeable, With short production cycle the characteristics of, it is of great significance to improving Business Economic Benefit, tool of optimizing product structure.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
The method that electromagnetic agitation melting refining aluminium alloy is closed using intermediate frequency furnace-smelting furnace duplex, as shown in figure 1, method is walked It is rapid as follows:
(1) according to alloy product component requirements, solid-state silicon and electrolysis raw aluminum liquid are added in intermediate frequency furnace, opens intermediate frequency furnace Electromagnetic agitation and heater, keep 745 DEG C of intermediate frequency furnace frequency 350Hz and temperature, and solid-state silicon rapid melting forms chemical composition Aluminium alloy melt in the middle of the aluminium silicon of stabilization;
(2) 1 ton of raw aluminum liquid of aluminium cell production is directly introduced into smelting furnace by siphon mode, keeps raw aluminum liquid temperature 745 DEG C, aluminium alloy melt in the middle of the Si in intermediate frequency furnace is transported into smelting furnace by the first chute, opens melting furnace bottom and set The electromagnetic mixing apparatus put, keep melting furnace bottom electromagnetic mixing apparatus frequency 350Hz, make Si centres aluminium alloy melt in low frequency It is uniform in the case of electromagnetic agitation sufficiently to incorporate raw aluminum liquid, form chemical composition and meet Si:10.0~13.0%, Cu%≤ 0.30th, Mg≤0.10%, Zn≤0.10%, Fe≤0.70%, Mn≤0.50%, Ni≤0.30%, Ti≤0.20%, Pb≤ 0.05%th, Sn≤0.01%, the aluminium alloy melt of balance of Al;
(3) operation of skimming is carried out to 1kg slagging agents are added in aluminium alloy melt in smelting furnace, removes aluminium alloy melt In the impurity such as electrolyte.Being passed through purity 99.99%, pressure to the aluminium alloy melt for taking off slag again after standing 10min is The argon gas of 0.4MPa, being blown 1.5kg refining agents by argon gas carries out injection refining, and refining temperature is controlled in 730 DEG C, refining time 15min, adding 0.5kg slagging agents carries out operation of skimming, and obtains the pure aluminium alloy melt that casting is required that meets;
(4) it is transferred to the second chute after pure aluminium alloy melt being stood into 20min at 730 DEG C and delivers to casting, is met National standard《Cast aluminium alloy gold》(GB/T1173-2013) the desired trade mark is the cast aluminium alloy gold product of ZLD102.
Intermediate frequency heat size described in the present embodiment is 5 tons, and intermediate frequency furnace electromagnetic agitation is arranged on around intermediate frequency furnace body, is conventional Electromagnetic stirrer coil, belongs to intermediate frequency electromagnetic agitating device.The melting heat size is 35 tons, and melting furnace bottom is provided with electromagnetism and stirs Device is mixed, is conventional electromagnetic stirring coil, belong to low frequency electromagnetic agitating device.Solid-state silicon is outsourcing product, specific requirement and is added Depending on add mode aluminium alloy trade mark of production required for.
Embodiment 2
(1) solid-state silicon, metallic copper and electrolysis raw aluminum liquid are added in intermediate frequency furnace, intermediate frequency furnace electromagnetic agitation is opened and heating is filled Put, keep 760 DEG C of intermediate frequency furnace frequency 350Hz and temperature so that solid-state silicon, metallic copper rapid melting dissolve that to form chemical composition steady Aluminium alloy melt in the middle of fixed Al-Si-Cu.The alloy constituent element element such as metallic silicon, metallic copper is outsourcing product, specific requirement and Depending on addition manner aluminium alloy trade mark of production required for;
(2) 1 ton of raw aluminum liquid of aluminium cell production is directly injected into smelting furnace by siphon mode, keeps raw aluminum liquid temperature 760℃.Aluminium alloy melt in the middle of Al-Si-Cu in intermediate frequency furnace is transported into smelting furnace by the first chute, smelting furnace is opened The electromagnetic mixing apparatus that bottom is set, keep melting furnace bottom electromagnetic mixing apparatus intermediate frequency furnace frequency 350Hz, in making Al-Si-Cu Between aluminium alloy melt is uniform in the case where low frequency electromagnetic is stirred sufficiently incorporates raw aluminum liquid, form chemical composition and meet Si:9.6 ~12.0%, Cu:1.5~3.5%, Mg≤0.30%, Zn≤0.10%, Fe≤0.90%, Mn≤0.50%, Ni≤ 0.50%th, Ti≤0.20%, Pb≤0.05%, Sn≤0.20%, Cr≤0.10%, the aluminium alloy melt of balance of Al;
(3) operation of skimming is carried out to the slagging agent that 1.5kg is added in aluminium alloy melt in smelting furnace, removes aluminium alloy The impurity such as the electrolyte in melt.Stand after 10min and to be to taking off slag aluminium alloy melt and be passed through purity 99.99%, pressure again The argon gas of 0.4MPa, and injection refining is carried out by argon gas injection 2.0kg refining agents, refining temperature is controlled at 750 DEG C, during refining Between 15min, adding 0.5kg slagging agents carries out operation of skimming, and obtains the pure aluminium alloy melt for meeting casting process;
(4) it is transferred to the second chute after pure aluminium alloy melt being stood into 20min at 740 DEG C and delivers to casting process, is accorded with Close national standard《Cast aluminium alloy gold》(GB/T1173-2013) the desired trade mark is the cast aluminium alloy gold product of ADC12.
Embodiment 3
(1) solid metallic copper and electrolysis raw aluminum liquid are added in intermediate frequency furnace, intermediate frequency furnace electromagnetic agitation and heater is opened, Keep 730 DEG C of intermediate frequency furnace frequency 350Hz and temperature so that metallic copper rapid melting dissolves the Al-Cu to form chemical composition stability Middle aluminium alloy melt.Metallic copper is outsourcing product, the aluminium alloy trade mark of specific requirement and the addition manner production required for Depending on;
(2) 1 ton of raw aluminum liquid of aluminium cell production is directly injected into smelting furnace by siphon mode, keeps raw aluminum liquid temperature 730℃.Aluminium alloy melt in the middle of Al-Cu in intermediate frequency furnace is transported into smelting furnace by the first chute, smelting furnace bottom is opened The electromagnetic mixing apparatus that portion is set, keep melting furnace bottom electromagnetic mixing apparatus intermediate frequency furnace frequency 350Hz, make aluminium in the middle of Al-Cu Alloy melt is uniform in the case where low frequency electromagnetic is stirred sufficiently to incorporate raw aluminum liquid, forms the qualified aluminium alloy of chemical composition and melts Body;
(3) operation of skimming is carried out to the slagging agent that 0.5kg is added in aluminium alloy melt in smelting furnace, removes aluminium alloy The impurity such as the electrolyte in melt.Stand after 10min and to be to taking off slag aluminium alloy melt and be passed through purity 99.99%, pressure again The argon gas of 0.4MPa, and injection refining is carried out by argon gas injection 3.0kg refining agents, refining temperature is controlled at 760 DEG C, during refining Between control in 15min, adding 0.5kg slagging agents carries out operation of skimming, obtain the pure aluminium alloy for meeting casting process melt Body;
(4) it is transferred to the second chute after pure aluminium alloy melt being stood into 20min at 720 DEG C and delivers to casting process, is accorded with Close national standard《Cast aluminium alloy gold》(GB/T1173-2013) desired cast aluminium alloy gold product.

Claims (4)

1. the method that electromagnetic agitation melting refining aluminium alloy is closed using intermediate frequency furnace-smelting furnace duplex, it is characterised in that including following Step:
(1) according to alloy product component requirements, the solid-state intermediate alloy containing different elements and electrolysis are added in intermediate frequency furnace Raw aluminum liquid, opens intermediate frequency furnace electromagnetic agitation and heater, keeps 730 DEG C~760 DEG C of intermediate frequency furnace frequency 350Hz and temperature, makes Obtain solid-state intermediate alloy rapid melting and form the middle aluminium alloy melt for meeting aluminium alloy smelting refining;
(2) raw aluminum liquid for producing aluminium cell directly introduces smelting furnace by siphon mode, and 730 DEG C of holding raw aluminum liquid temperature~ 760 DEG C, the middle aluminium alloy melt in intermediate frequency furnace is transported into smelting furnace by chute, opens the electricity that melting furnace bottom is set Magnetic agitating device, keeps melting furnace bottom electromagnetic mixing apparatus frequency 350Hz, middle aluminium alloy melt is stirred in low frequency electromagnetic In the case of it is uniform sufficiently incorporate raw aluminum liquid, form the qualified aluminium alloy melt of chemical composition;
(3) to slagging agent is added in aluminium alloy melt in smelting furnace, operation of skimming is carried out, it is miscellaneous in removing aluminium alloy melt Matter;Being blown into refining agent by argon gas to the aluminium alloy melt for taking off slag again after standing 10min carries out injection refining, adds beat again Slag agent carries out operation of skimming, and obtains the pure aluminium alloy melt that casting is required that meets;
(4) it is transferred to chute after pure aluminium alloy melt is stood and delivers to casting.
2. the method that utilization intermediate frequency furnace according to claim 1-smelting furnace duplex closes electromagnetic agitation melting refining aluminium alloy, Characterized in that, step (1) the solid-state intermediate alloy containing different elements is to contain solid-state silicon and/or metal copper Intermediate alloy.
3. the method that utilization intermediate frequency furnace according to claim 1-smelting furnace duplex closes electromagnetic agitation melting refining aluminium alloy, Characterized in that, the total consumption control of the slagging agent added twice in step (3) is between 1.0~2.0kg/t.Al, injection refining Use purity to be blown into refining agent for 99.99% argon gas, be blown into argon pressure for 0.4MPa, refining temperature control 730 DEG C~ Between 760 DEG C, refining time 15min, refining agent consumption is controlled between 1.5~3.0kg/t.Al.
4. the method that utilization intermediate frequency furnace according to claim 1-smelting furnace duplex closes electromagnetic agitation melting refining aluminium alloy, Characterized in that, aluminium alloy melt dwell temperature is controlled between 720 DEG C~740 DEG C in step (4), time of repose is 20min.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107385285A (en) * 2017-07-21 2017-11-24 张栗珲 A kind of fuel oil quantum processor and preparation method thereof
CN107604185A (en) * 2017-09-22 2018-01-19 安徽霍山龙鑫金属科技有限公司 A kind of preparation technology of aluminium alloy
CN112813297A (en) * 2021-01-22 2021-05-18 昆明冶金研究院有限公司 Efficient energy-saving smelting method of aluminum-silicon alloy

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CN103740956A (en) * 2014-01-08 2014-04-23 镇江镨利玛新型材料科技有限公司 Preparation method of high-silicon aluminum alloy
CN104328316A (en) * 2014-10-15 2015-02-04 云南云铝润鑫铝业有限公司 Production method of large diameter 6063 aluminum alloy round ingot casting billet
CN105463272A (en) * 2015-12-18 2016-04-06 云南云铝润鑫铝业有限公司 Production method for 5005 aluminum alloy circular ingots
CN105543528A (en) * 2015-12-18 2016-05-04 云南云铝润鑫铝业有限公司 Method for directly producing 6xxx-series aluminum alloy from high silicon electrolytic aluminum liquid

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Publication number Priority date Publication date Assignee Title
CN101280366A (en) * 2008-05-22 2008-10-08 刘济华 Cold melt process for secondary aluminium
CN103740956A (en) * 2014-01-08 2014-04-23 镇江镨利玛新型材料科技有限公司 Preparation method of high-silicon aluminum alloy
CN104328316A (en) * 2014-10-15 2015-02-04 云南云铝润鑫铝业有限公司 Production method of large diameter 6063 aluminum alloy round ingot casting billet
CN105463272A (en) * 2015-12-18 2016-04-06 云南云铝润鑫铝业有限公司 Production method for 5005 aluminum alloy circular ingots
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107385285A (en) * 2017-07-21 2017-11-24 张栗珲 A kind of fuel oil quantum processor and preparation method thereof
CN107604185A (en) * 2017-09-22 2018-01-19 安徽霍山龙鑫金属科技有限公司 A kind of preparation technology of aluminium alloy
CN112813297A (en) * 2021-01-22 2021-05-18 昆明冶金研究院有限公司 Efficient energy-saving smelting method of aluminum-silicon alloy

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