CN106544561A - A kind of casting method of aluminum alloy plate materials - Google Patents
A kind of casting method of aluminum alloy plate materials Download PDFInfo
- 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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- Prior art keywords
- chlorine
- aluminum alloy
- argon
- casting
- ingot
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- 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
-
- 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
-
- 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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- 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
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.
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Cited By (4)
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)
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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 |
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2016
- 2016-12-12 CN CN201611136593.XA patent/CN106544561A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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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)
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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