CN106544561A - A kind of casting method of aluminum alloy plate materials - Google Patents

A kind of casting method of aluminum alloy plate materials Download PDF

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Publication number
CN106544561A
CN106544561A CN201611136593.XA CN201611136593A CN106544561A CN 106544561 A CN106544561 A CN 106544561A CN 201611136593 A CN201611136593 A CN 201611136593A CN 106544561 A CN106544561 A CN 106544561A
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CN
China
Prior art keywords
chlorine
aluminum alloy
argon
casting
ingot
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Pending
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CN201611136593.XA
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Chinese (zh)
Inventor
陆丽文
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Guangxi University
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Guangxi University
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Priority to CN201611136593.XA priority Critical patent/CN106544561A/en
Publication of CN106544561A publication Critical patent/CN106544561A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/10Alloys based on aluminium with zinc as the next major constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16Controlling or regulating processes or operations
    • B22D11/18Controlling or regulating processes or operations for pouring
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous 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 non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • C22C1/03Making non-ferrous alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/06Making non-ferrous alloys with the use of special agents for refining or deoxidising

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a kind of casting method of aluminum alloy plate materials, the percentage by weight of described its composition of aluminum alloy plate materials is:Zn6.5~7.3%, Mg1.2~1.8%, Si≤0.05%, Fe≤0.08%, Cu≤0.05%, balance of Al, the percentage by weight of every kind of impurity is≤0.035%.Described method includes dispensing, melting, refine, semi-continuous casting.The aluminum alloy plate materials have that defect is few, oxidation film-strength is high, are not in that surface color is partially yellow, while remaining the high advantage of intensity of aluminum alloy, are particularly suitable for manufacturing the shell decorative product of electronic product.

Description

A kind of casting method of aluminum alloy plate materials
Technical field
The present invention relates to non-ferrous metals casting technical field, especially a kind of casting method of aluminum alloy plate materials.
Background technology
Aluminium alloy is to add a series of other elements castings in fine aluminium to form, the conventional mechanical property of aluminum and aluminium alloy with The difference of alloy species, state and each addition element content, its tensile strength can change between 50~800MPa, and which is bent Take intensity to change between 10~700MPa, elongation percentage can change between 2%~50%.Compare other materials, and aluminum is closed Gold utensil has the advantage that:Light weight, intensity are high, corrosion-resistant, nonhazardouss, good electrical and thermal conductivity performance, easy processing, incrustation performance are excellent Good etc., aluminium alloy is in occupation of critical role in the range of every field.At present, the casting method of known aluminum alloy plate materials At casting aluminum alloy round ingot Jing homogenization heat treatments out, machining, the pre-heat treatment, hot rolling, crosscutting, solid solution and quenching heat Reason, stretching, artificial aging, the aluminum alloy plate materials finished metal glossiness after machining are dark, and surface has the table such as striped, heterochromatic Planar defect.
The content of the invention
It is an object of the present invention to be directed to the problems referred to above, a kind of casting method of improved aluminum alloy plate materials is proposed.
The technical solution adopted for the present invention to solve the technical problems is:Including following several steps:The first step:Dispensing, By in the aluminium ingot for calculating, Zn intermediate alloys, Cu intermediate alloys input smelting furnace, Mg is added with form of pure metal, treats that aluminium ingot is complete In input magnesium ingot after running down;Second step:Melting, after input magnesium ingot, carries out abundant electromagnetic agitation, skims, in stokehold sampling point Analysis carries out composition adjustment, and melting holding temperature is 690~720 DEG C, and smelting time is less than 8h;3rd step:Melt is turned by refine, a. Chlorine+argon mixed gas are passed through in entering holding furnace carries out refine, and chlorine accounts for the 8~20% of argon and chlorine mixed gas total amount, Refining temperature is 710~740 DEG C, and refining time is less than 2h;B. stand<3h;C. online degasification, slagging-off:Lead in depassing unit Entering chlorine+argon mixed gas carries out degasification, and chlorine accounts for the 13~25% of argon and chlorine mixed gas total amount, and defecator makes Filter cleaner is carried out with 30ppi or 40ppi screen plates;4th step:Semi-continuous casting, using the aluminum of direct water-cooling semi-continuous casting Alloy billet, casting temperature are 680~715 DEG C, and cooling water flow is 100~330m3/ hr, casting speed are 20~60mm/ Min, crystallizer 40~100mm of metal liquid level, do not add any grain refiner online.In the furnace charge of described first step dispensing In, the percentage by weight of wherein composition is:Zn5.6~6.4%, Mg1.9~2.4%, Si0.06~0.12%, Fe0.09~ 0.15%th, Cu0.06~0.09%, other individual element content≤0.04%, balance of Al percentage by weights.
The invention has the beneficial effects as follows:The aluminum alloy sheet material surface glossiness is good, defect is few, oxidation film-strength is high, will not There is surface color partially yellow, while remaining the high advantage of intensity of aluminum alloy, be particularly suitable for manufacturing the structure of electronic product Part or shell decorative product.
Specific embodiment
Embodiment 1:
A kind of casting method of aluminum alloy plate materials of the present embodiment, including following several steps:The first step:Dispensing, will calculate Aluminium ingot, Zn intermediate alloys, Cu intermediate alloys input smelting furnace in, Mg with form of pure metal add, after aluminium ingot is completely melt In input magnesium ingot, the percentage by weight of wherein composition is:Zn5.6%, Mg1.9%, Si0.06%, Fe0.09%, Cu0.06%, other Individual element content≤0.04%, balance of Al percentage by weights;Second step:Melting, after input magnesium ingot, carries out abundant electromagnetism and stirs Mix, skim, sample analysis carry out composition adjustment in stokehold, melting holding temperature is 690 DEG C, and smelting time is less than 8h;3rd step: Melt is proceeded to and be passed through in holding furnace chlorine+argon mixed gas and carry out refine by refine, a., and chlorine accounts for argon and chlorine gaseous mixture The 8% of body total amount, refining temperature are 710 DEG C, and refining time is less than 2h;B. stand<3h;C. online degasification, slagging-off:Fill in degasification Chlorine+argon mixed gas are passed through in putting carries out degasification, and chlorine accounts for the 13% of argon and chlorine mixed gas total amount, defecator Filter cleaner is carried out using 30ppi or 40ppi screen plates;4th step:Semi-continuous casting, using direct water-cooling semi-continuous casting Aluminum alloy round ingot, casting temperature are 680 DEG C, and cooling water flow is 100m3/ hr, casting speed is 20mm/min, crystallizer metal Liquid level 40mm, does not add any grain refiner online.
Embodiment 2:
A kind of casting method of aluminum alloy plate materials of the present embodiment, including following several steps:The first step:Dispensing, will calculate Aluminium ingot, Zn intermediate alloys, Cu intermediate alloys input smelting furnace in, Mg with form of pure metal add, after aluminium ingot is completely melt In input magnesium ingot, the percentage by weight of wherein composition is:Zn6.0%, Mg2.15%, Si0.09%, Fe0.12%, Cu0.075%, its His individual element content≤0.04%, balance of Al percentage by weights;Second step:Melting, after input magnesium ingot, carries out abundant electromagnetism Stir, skim, sample analysis carry out composition adjustment in stokehold, melting holding temperature is 705 DEG C, and smelting time is less than 8h;3rd Step:Melt is proceeded to and be passed through in holding furnace chlorine+argon mixed gas and carry out refine by refine, a., and chlorine accounts for argon and chlorine is mixed The 14% of gas gross is closed, refining temperature is 725 DEG C, and refining time is less than 2h;B. stand<3h;C. online degasification, slagging-off:Removing Chlorine+argon mixed gas are passed through in device of air carries out degasification, and chlorine accounts for the 19% of argon and chlorine mixed gas total amount, filters Device carries out filter cleaner using 30ppi or 40ppi screen plates;4th step:Semi-continuous casting, using the semicontinuous casting of direct water-cooling The aluminum alloy round ingot made, casting temperature are 695 DEG C, and cooling water flow is 215m3/ hr, casting speed is 40mm/min, crystallizer Metal liquid level 70mm, does not add any grain refiner online.
Embodiment 3:
A kind of casting method of aluminum alloy plate materials of the present embodiment, including following several steps:The first step:Dispensing, will calculate Aluminium ingot, Zn intermediate alloys, Cu intermediate alloys input smelting furnace in, Mg with form of pure metal add, after aluminium ingot is completely melt In input magnesium ingot, the percentage by weight of wherein composition is:Zn6.4%, Mg2.4%, Si0.12%, Fe0.15%, Cu0.09%, other Individual element content≤0.04%, balance of Al percentage by weights;Second step:Melting, after input magnesium ingot, carries out abundant electromagnetism and stirs Mix, skim, sample analysis carry out composition adjustment in stokehold, melting holding temperature is 720 DEG C, and smelting time is less than 8h;3rd step: Melt is proceeded to and be passed through in holding furnace chlorine+argon mixed gas and carry out refine by refine, a., and chlorine accounts for argon and chlorine gaseous mixture The 20% of body total amount, refining temperature are 740 DEG C, and refining time is less than 2h;B. stand<3h;C. online degasification, slagging-off:Fill in degasification Chlorine+argon mixed gas are passed through in putting carries out degasification, and chlorine accounts for the 25% of argon and chlorine mixed gas total amount, defecator Filter cleaner is carried out using 30ppi or 40ppi screen plates;4th step:Semi-continuous casting, using direct water-cooling semi-continuous casting Aluminum alloy round ingot, casting temperature are 715 DEG C, and cooling water flow is 330m3/ hr, casting speed is 60mm/min, crystallizer metal Liquid level 100mm, does not add any grain refiner online.
Above the specific embodiment of the present invention is described, but these explanations can not be considered as limiting the present invention Scope, protection scope of the present invention limited by appended claims, Wang where appointing on the basis of the claims in the present invention What modification, equivalent and improvement etc., each falls within the Inner of protection scope of the present invention.

Claims (1)

1. a kind of casting method of aluminum alloy plate materials, including following several steps:The first step:Dispensing, by the aluminium ingot for calculating, Zn In intermediate alloy, Cu intermediate alloys input smelting furnace, Mg is added with form of pure metal, in input magnesium after aluminium ingot is completely melt Ingot;Second step:Melting, after input magnesium ingot, carries out abundant electromagnetic agitation, skims, and in stokehold, sample analysis carry out composition adjustment, melt Refining holding temperature is 690~720 DEG C, and smelting time is less than 8h;3rd step:Melt is proceeded to and be passed through in holding furnace chlorine by refine, a. Gas+argon mixed gas carry out refine, and chlorine accounts for the 8~20% of argon and chlorine mixed gas total amount, and refining temperature is 710~ 740 DEG C, refining time is less than 2h;B. stand<3h;C. online degasification, slagging-off:Chlorine+argon mixing is passed through in depassing unit Gas carries out degasification, and chlorine accounts for the 13~25% of argon and chlorine mixed gas total amount, and defecator uses 30ppi or 40ppi mistakes Filter plate carries out filter cleaner;4th step:Semi-continuous casting, using the aluminum alloy round ingot of direct water-cooling semi-continuous casting, casting temperature Spend for 680~715 DEG C, cooling water flow is 100~330m3/ hr, casting speed be 20~60mm/min, crystallizer molten metal 40~100mm of position, does not add any grain refiner online, it is characterised in that:In the furnace charge of described first step dispensing, its The percentage by weight of middle composition is:Zn5.6~6.4%, Mg1.9~2.4%, Si0.06~0.12%, Fe0.09~0.15%, Cu0.06~0.09%, other individual element content≤0.04%, balance of Al percentage by weights.
CN201611136593.XA 2016-12-12 2016-12-12 A kind of casting method of aluminum alloy plate materials Pending CN106544561A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108220718A (en) * 2017-12-29 2018-06-29 潘换珍 A kind of high intensity high-yield-ratio cast aluminium alloy material and preparation method thereof
CN108300887A (en) * 2017-12-29 2018-07-20 天津圣金特汽车配件有限公司 A kind of smelting technology of high-strength/tenacity aluminum alloy
CN109207758A (en) * 2018-10-20 2019-01-15 北京逸智联科技有限公司 A kind of Al alloy parts melt casting process
CN113695538A (en) * 2021-09-03 2021-11-26 中铝河南洛阳铝加工有限公司 Preparation method of mirror-surface aluminum plate strip with high formability and mirror-surface aluminum plate strip

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1693498A (en) * 2005-05-20 2005-11-09 东北轻合金有限责任公司 Manufacturing method of ultrahard aluminium alloy
JP2009144190A (en) * 2007-12-12 2009-07-02 Kobe Steel Ltd High-strength and high-ductility aluminum alloy sheet and manufacturing method therefor
CN104388773A (en) * 2014-11-28 2015-03-04 广西南南铝加工有限公司 Casting method of aluminum alloy precise casting plate for tool molds and tools
CN104532043A (en) * 2014-12-12 2015-04-22 西南铝业(集团)有限责任公司 Preparation method of 7 series aluminum alloy ingots

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1693498A (en) * 2005-05-20 2005-11-09 东北轻合金有限责任公司 Manufacturing method of ultrahard aluminium alloy
JP2009144190A (en) * 2007-12-12 2009-07-02 Kobe Steel Ltd High-strength and high-ductility aluminum alloy sheet and manufacturing method therefor
CN104388773A (en) * 2014-11-28 2015-03-04 广西南南铝加工有限公司 Casting method of aluminum alloy precise casting plate for tool molds and tools
CN104532043A (en) * 2014-12-12 2015-04-22 西南铝业(集团)有限责任公司 Preparation method of 7 series aluminum alloy ingots

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108220718A (en) * 2017-12-29 2018-06-29 潘换珍 A kind of high intensity high-yield-ratio cast aluminium alloy material and preparation method thereof
CN108300887A (en) * 2017-12-29 2018-07-20 天津圣金特汽车配件有限公司 A kind of smelting technology of high-strength/tenacity aluminum alloy
CN109207758A (en) * 2018-10-20 2019-01-15 北京逸智联科技有限公司 A kind of Al alloy parts melt casting process
CN109207758B (en) * 2018-10-20 2021-05-04 苏州安路特汽车部件有限公司 Aluminum alloy workpiece smelting and casting process
CN113695538A (en) * 2021-09-03 2021-11-26 中铝河南洛阳铝加工有限公司 Preparation method of mirror-surface aluminum plate strip with high formability and mirror-surface aluminum plate strip

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