CN108160966B - A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13% - Google Patents

A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13% Download PDF

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Publication number
CN108160966B
CN108160966B CN201711474117.3A CN201711474117A CN108160966B CN 108160966 B CN108160966 B CN 108160966B CN 201711474117 A CN201711474117 A CN 201711474117A CN 108160966 B CN108160966 B CN 108160966B
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aluminum alloy
casting
crystallizer
square ingot
water
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CN108160966A (en
Inventor
李德奇
向曙光
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Southwest Aluminum Group Co Ltd
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Southwest Aluminum Group Co Ltd
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    • 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
    • B22D11/001Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/003Aluminium alloys
    • 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
    • B22D11/20Controlling or regulating processes or operations for removing cast stock
    • 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
    • B22D11/22Controlling or regulating processes or operations for cooling cast stock or mould

Abstract

The invention discloses a kind of aluminum alloy semi-continuous casting methods that Zn content is 9%~13%, comprising steps of 1) trailer system is risen in crystallizer water jacket, cooling water is passed through into crystallizer water jacket, cooling water is sprayed by the apopore of crystallizer water jacket, effect to the surface of aluminum alloy square ingot casting;2) aluminium alloy melt is injected into crystallizer, after aluminium alloy melt solidifies preset duration in the crystallizer, starting trailer system is cast, wherein, when the length of aluminum alloy square ingot casting is 50mm-150mm, casting speed 50mm/min, water velocity is gradually from 23m3/ h rises to 25m3/h.The casting method can reduce the stress in aluminium alloy casting process, to promote the Forming Quality of aluminum alloy square ingot casting.

Description

A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13%
Technical field
The present invention relates to alloy casting technology field, in particular to the aluminium alloy that a kind of Zn content is 9%~13% partly connects Continuous casting method.
Background technique
Aluminum alloy semi-continuous casting is the process in crystallizer and chassis interior continuous pouring, in semicontinuous ingot casting, bottom Seat constantly moves down, and realizes continuous pouring, metal bath is equably imported in the crystallizer that outer wall is water-cooled, in crystallizer wall It is crystallized with quick solidification under the collective effect of crystallizer pedestal, and forms a firmer solidified shell.
Currently, during Zn content is 9%~13% aluminum alloy semi-continuous casting, casting beginning shop fixtures melt temperature Degree, casting speed and water velocity etc. can all cause very big influence to the quality of aluminum alloy square ingot casting shaping, due to current The process parameters design of aluminium alloy casting is unreasonable, causes internal stress to concentrate in aluminium alloy casting process, leads to ingot casting surface There is the defects of cold shut or crackle.
Therefore, how a kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13% is provided, can be reduced in aluminium Stress in alloy casting process, the Forming Quality for promoting aluminum alloy square ingot casting is the technology of those skilled in the art's urgent need to resolve Problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide the aluminum alloy semi-continuous castings that a kind of Zn content is 9%~13% Method can reduce the stress in aluminium alloy casting process, promote the Forming Quality of aluminum alloy square ingot casting.
To achieve the above object, the invention provides the following technical scheme:
A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13%, comprising steps of
1) trailer system is risen in crystallizer water jacket, cooling water, the cooling water is passed through in Xiang Suoshu crystallizer water jacket It is sprayed by the apopore of the crystallizer water jacket, effect to the surface of aluminum alloy square ingot casting;
2) aluminium alloy melt is injected in Xiang Suoshu crystallizer, is preset when the aluminium alloy melt solidifies in the crystallizer After duration, starts the trailer system and is cast, wherein
When the length of the aluminum alloy square ingot casting be 50mm-150mm when, casting speed 50mm/min, water velocity by Gradually from 23m3/ h rises to 25m3/h;
When the length of the aluminum alloy square ingot casting is 150mm-300mm, the casting speed is 50mm/min, the water Flow velocity degree is 25m3/h;
When the length of the aluminum alloy square ingot casting is 300mm-500mm, the casting speed is gradually mentioned from 50mm/min Height arrives 53mm/min, and the water velocity is 25m3/h;
When the length of the aluminum alloy square ingot casting is 500mm-1000mm, the casting speed is 53mm/min, described Water velocity is 25m3/h。
Preferably, the cast temperature of the aluminium alloy melt is 690 DEG C -710 DEG C.
Preferably, when the length of the aluminum alloy square ingot casting is 420mm-450mm, apply water blocking in the crystallizer Plate.
Preferably, the temperature of the liquidus curve of the aluminium alloy melt is 620 DEG C -640 DEG C.
Preferably, the temperature of the solidus of the aluminum alloy square ingot casting is 460 DEG C -480 DEG C.
As can be seen from the above technical solutions, the aluminium alloy that Zn content disclosed in this invention is 9%~13% is semicontinuous Casting method, comprising steps of
1) trailer system is risen in crystallizer water jacket, cooling water, the cooling water is passed through in Xiang Suoshu crystallizer water jacket It is sprayed by the apopore of the crystallizer water jacket, effect to the surface of aluminum alloy square ingot casting;
2) aluminium alloy melt is injected in Xiang Suoshu crystallizer, is preset when the aluminium alloy melt solidifies in the crystallizer After duration, starts the trailer system and is cast, wherein
When the length of the aluminum alloy square ingot casting be 50mm-150mm when, casting speed 50mm/min, water velocity by Gradually from 23m3/ h rises to 25m3/h;
When the length of the aluminum alloy square ingot casting is 150mm-300mm, the casting speed is 50mm/min, the water Flow velocity degree is 25m3/h;
When the length of the aluminum alloy square ingot casting is 300mm-500mm, the casting speed is gradually mentioned from 50mm/min Height arrives 53mm/min, and the water velocity is 25m3/h;
When the length of the aluminum alloy square ingot casting is 500mm-1000mm, the casting speed is 53mm/min, described Water velocity is 25m3/h。
Therefore, aluminum alloy square ingot casting is during casting, as the length of aluminum alloy square ingot casting changes, casting speed and Water velocity is also in the gradual corresponding small size subtle variation of progress, the small size gradual change of casting speed and water velocity, Neng Gouyou Effect reduces the stress in aluminium alloy casting process, to promote the Forming Quality of aluminum alloy square ingot casting.
Specific embodiment
In view of this, core of the invention is to provide a kind of aluminum alloy semi-continuous casting that Zn content is 9%~13% Method can reduce the stress in aluminium alloy casting process, promote the Forming Quality of aluminum alloy square ingot casting.
In order to enable those skilled in the art to better understand the solution of the present invention, With reference to embodiment to this hair It is bright to be described in further detail.
The aluminum alloy semi-continuous casting method that Zn content disclosed in the embodiment of the present invention is 9%~13%, comprising steps of
1) trailer system is risen in crystallizer water jacket, cooling water, the cooling water is passed through in Xiang Suoshu crystallizer water jacket It is sprayed by the apopore of the crystallizer water jacket, effect to the surface of aluminum alloy square ingot casting;
2) aluminium alloy melt is injected in Xiang Suoshu crystallizer, is preset when the aluminium alloy melt solidifies in the crystallizer After duration, starts the trailer system and is cast, wherein
When the length of the aluminum alloy square ingot casting be 50mm-150mm when, casting speed 50mm/min, water velocity by Gradually from 23m3/ h rises to 25m3/h;
When the length of the aluminum alloy square ingot casting is 150mm-300mm, the casting speed is 50mm/min, the water Flow velocity degree is 25m3/h;
When the length of the aluminum alloy square ingot casting is 300mm-500mm, the casting speed is gradually mentioned from 50mm/min Height arrives 53mm/min, and the water velocity is 25m3/h;
When the length of the aluminum alloy square ingot casting is 500mm-1000mm, the casting speed is 53mm/min, described Water velocity is 25m3/h。
Therefore, aluminum alloy square ingot casting is during casting, as the length of aluminum alloy square ingot casting changes, casting speed and Water velocity is also in the gradual corresponding small size subtle variation of progress, the small size gradual change of casting speed and water velocity, Neng Gouyou Effect reduces the stress in aluminium alloy casting process, to promote the Forming Quality of aluminum alloy square ingot casting.
It should be noted that the cast temperature of aluminium alloy melt is 690 DEG C -710 DEG C, so set, can be further Reduce the crackle during aluminum alloy square ingot casting shaping.
Further, when the length of aluminum alloy square ingot casting is 420mm-450mm, apply water fender in crystallizer, keep off The setting of water plate can make the internal stress in aluminium alloy casting process reach stable state, to effectively reduce aluminium alloy Phenomena such as cold shut and crackle of square ingot casting.
It should be noted that the temperature of the liquidus curve of aluminium alloy melt is 620 DEG C -640 DEG C, the solid phase of aluminum alloy square ingot casting The temperature of line is 460 DEG C -480 DEG C.
It should be further noted that use Zn content disclosed in the embodiment of the present invention for 9%~13% aluminium alloy The aluminum alloy square ingot casting of semi-continuous casting method casting and forming is large-size aluminum alloy side's ingot casting, and width basically reaches 1300mm, thickness basically reach 400mm.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (5)

1. a kind of aluminum alloy semi-continuous casting method that Zn content is 9%-13%, which is characterized in that
Comprising steps of
1) trailer system is risen in crystallizer water jacket, is passed through cooling in Xiang Suoshu crystallizer water jacket
Water, the cooling water are sprayed by the apopore of the crystallizer water jacket, effect to the surface of aluminum alloy square ingot casting;
2) aluminium alloy melt is injected in Xiang Suoshu crystallizer, when the aluminium alloy melt solidifies preset duration in the crystallizer Afterwards, start the trailer system to be cast, wherein
When the length of the aluminum alloy square ingot casting changes to 150mm from 50mm, casting speed 50mm/min, water velocity by Gradually from 23m3/ h rises to 25m3/h;
When the length of the aluminum alloy square ingot casting is 150mm-300mm, the casting speed is 50mm/min, the water flow velocity Degree is 25m3/h;
When the length of the aluminum alloy square ingot casting be change to 500mm from 300mm when, the casting speed from 50mm/min gradually It is increased to 53mm/min, the water velocity is 25m3/h;
When the length of the aluminum alloy square ingot casting is 500mm-1000mm, the casting speed is 53mm/min, the water flow Speed is 25m3/h。
2. the aluminum alloy semi-continuous casting method that Zn content according to claim 1 is 9%~13%, which is characterized in that The cast temperature of the aluminium alloy melt is 690 DEG C -710 DEG C.
3. the aluminum alloy semi-continuous casting method that Zn content according to claim 1 is 9%~13%, which is characterized in that When the length of the aluminum alloy square ingot casting is 420mm-450mm, apply water fender in the crystallizer.
4. the aluminum alloy semi-continuous casting method that Zn content according to claim 1 is 9%~13%, which is characterized in that The temperature of the liquidus curve of the aluminium alloy melt is 620 DEG C -640 DEG C.
5. the aluminum alloy semi-continuous casting method that Zn content according to claim 1 is 9%~13%, which is characterized in that The temperature of the solidus of the aluminum alloy square ingot casting is 460 DEG C -480 DEG C.
CN201711474117.3A 2017-12-29 2017-12-29 A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13% Active CN108160966B (en)

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CN100393451C (en) * 2006-12-13 2008-06-11 中国铝业股份有限公司 Casting process of 3140 flat aluminium alloy ingot
CN101670429B (en) * 2009-09-16 2011-06-29 苏州有色金属研究院有限公司 Casting method for inhibiting bottom crack of ingot
JP5819294B2 (en) * 2010-06-11 2015-11-24 昭和電工株式会社 Method for producing Al alloy joined body
CN102912200A (en) * 2012-11-13 2013-02-06 东北轻合金有限责任公司 Manufacturing method for super-large-sized aluminium alloy flat ingot casting
CN104294112B (en) * 2013-07-16 2016-08-10 大力神铝业股份有限公司 A kind of manufacture method of Airline meal box alloy foil
KR101511632B1 (en) * 2013-09-05 2015-04-13 한국기계연구원 Method for manufacturing of Al-Zn alloy sheet using twin roll casting and Al-Zn alloy sheet thereby
CN104372216B (en) * 2014-12-12 2017-04-05 西南铝业(集团)有限责任公司 A kind of heat top casting technique of 7A04 aluminium alloys and its aluminium alloy
CN104451294A (en) * 2014-12-12 2015-03-25 西南铝业(集团)有限责任公司 Processing technique of Al-Zn aluminium alloy cast ingot
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