CN104353793B - A kind of liquid-solid phase casting method of lamellar composite aluminium ingot - Google Patents
A kind of liquid-solid phase casting method of lamellar composite aluminium ingot Download PDFInfo
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- CN104353793B CN104353793B CN201410688307.5A CN201410688307A CN104353793B CN 104353793 B CN104353793 B CN 104353793B CN 201410688307 A CN201410688307 A CN 201410688307A CN 104353793 B CN104353793 B CN 104353793B
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- aluminium alloy
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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
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/02—Casting compound ingots of two or more different metals in the molten state, i.e. integrally cast
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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
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
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Abstract
A kind of liquid-solid phase casting method of lamellar composite aluminium ingot, it is characterized in that being made up of following steps: respectively aluminium alloy ingots surface is carried out with the sodium hydroxide solution that mass percent concentration is 5 ~ 10% and the hydrochloric acid solution that concentration of volume percent is 3 ~ 5%, remove greasy dirt and the oxide on surface；Villiaumite solution is coated uniformly on the aluminium alloy ingots surface after cleaning；Aluminium alloy ingots is toasted 1 ~ 2 hour at 100 ~ 200 DEG C, removes the moisture on aluminium alloy ingots surface；Aluminium alloy ingots being preheated to 400 ~ 500 DEG C, another kind of aluminum alloy melt is poured into the surface of aluminium alloy ingots, the pouring temperature of aluminum alloy melt controls at 700 ~ 740 DEG C, forms stratiform clad aluminum ingot after cooled and solidified.The method of the present invention can stably obtain the lamellar composite aluminium ingot with metallurgical binding, and the compound interface of the lamellar composite aluminium ingot of preparation is clear, smooth, and also has the advantage that technique is simple, production cost is low, be suitable for production in enormous quantities.
Description
Technical field
The invention belongs to field of composite material preparation, be specifically related to the liquid-solid phase casting method of a kind of lamellar composite aluminium ingot.
Background technology
Lamellar composite aluminium ingot is the lamellar composite ingot blank being combined into by metallurgical interface by two kinds of aluminium alloys, after the processing such as rolling, extruding, forging, namely this lamellar composite aluminium ingot becomes lamellar composite aluminium sheet, aluminum pipe, aluminium section bar, aluminum forging etc., has extremely important using value and wide application prospect in fields such as automobile, electronic apparatus, Aero-Space.
The preparation method of existing stratiform clad aluminum ingot is mainly semi-continuous casting method, and the method is to be poured in crystallizer by two kinds of aluminum alloy melts simultaneously, and then cast shapes, and obtains lamellar composite aluminium ingot after cooled and solidified.Although semi-continuous casting method can obtain the lamellar composite aluminium ingot with metallurgical binding, but the control of casting technological parameter is required very harsh by this method, otherwise two kinds of aluminum alloy melts are readily formed mixing when cast, the compound interface of the lamellar composite aluminium ingot obtained is unclear, out-of-flatness, and the yield rate of lamellar composite aluminium ingot is relatively low.
Liquid-solid phase casting is the surface that a kind of molten metal is directly poured into another kind of solid metallic, the method obtaining layered composite metal ingot or parts after cooled and solidified.Liquid-solid phase casting has been successfully applied in the production of the ferrous metal lamellar composite ingots such as rich chromium cast iron, potassium steel, carbon steel and parts at present, but is not successfully applied to the production of lamellar composite aluminium ingot so far.
Research finds, under atmospheric environment, the surface of aluminum alloy melt exists Al one layer fine and close all the time2O3Oxide-film, and aluminium alloy ingots surface in high temperature preheating process is also readily formed Al one layer fine and close2O3Oxide-film, all there is Al one layer fine and close in the surface just because of aluminum alloy melt and aluminium alloy ingots2O3Oxide-film, hinders the Elements Diffusion between aluminum alloy melt and aluminium alloy ingots, makes liquid-solid phase casting cannot obtain the lamellar composite aluminium ingot with metallurgical binding at all.
Summary of the invention
Problems existing in it is an object of the invention to prepare for existing stratiform clad aluminum ingot, it is provided that a kind of can stably obtain the liquid-solid phase casting method with metallurgical binding stratiform clad aluminum ingot.
The present invention realizes the technical scheme that above-mentioned purpose adopts and is made up of following steps:
The first step: respectively aluminium alloy ingots surface is carried out with the sodium hydroxide solution that mass percent concentration is 5 ~ 10% and the hydrochloric acid solution that concentration of volume percent is 3 ~ 5%, removes greasy dirt and the oxide on surface；
Second step: villiaumite solution is coated uniformly on the aluminium alloy ingots surface after cleaning；
3rd step: toasted 1 ~ 2 hour at 100 ~ 200 DEG C by aluminium alloy ingots, removes the moisture on aluminium alloy ingots surface；
4th step: aluminium alloy ingots is preheated to 400 ~ 500 DEG C, is poured into the surface of aluminium alloy ingots by another kind of aluminum alloy melt, and the pouring temperature of aluminum alloy melt controls at 700 ~ 740 DEG C, forms stratiform clad aluminum ingot after cooled and solidified.
Described villiaumite solution is mass percent concentration be 20 ~ 40% potassium fluorozirconate and the aqueous solution of Potassium borofluoride.
Described potassium fluorozirconate and potassium fluorozirconate that Potassium borofluoride mass percent is 40 ~ 50% and 50 ~ 60% Potassium borofluoride.
The innovation of the present invention is in that: one layer of villiaumite solution of aluminium alloy ingots surface-coated after cleaning; after baking; the uniform villiaumite crystal of lid layer is covered on the surface of aluminium alloy ingots; first; the surface of aluminium alloy ingots can be played a protective role by villiaumite crystal, it is prevented that aluminium alloy ingots again occurs oxidation to form Al in high temperature preheating process subsequently2O3Oxide-film；Secondly, after aluminum alloy melt is poured into the surface of aluminium alloy ingots, villiaumite crystal can contact with aluminum alloy melt and violent exothermic reaction occurs, and exothermic reaction can destroy the Al on aluminum alloy melt surface2O3Oxide-film, exposes fresh aluminum alloy melt and contacts compound with aluminium alloy ingots.Meanwhile, exothermic reaction also can enable aluminum alloy to the contact surface local temperature moment rising between liquid and aluminium alloy ingots, and high temperature can accelerate the Elements Diffusion between aluminum alloy melt and aluminium alloy ingots, finally enables aluminum alloy to realize stable metallurgical binding between liquid and aluminium alloy ingots.
Adopt the present invention can stably obtain the lamellar composite aluminium ingot with metallurgical binding, solve tradition liquid-solid phase casting and cannot obtain the problem with metallurgical binding stratiform clad aluminum ingot at all.It addition, adopt the compound interface of lamellar composite aluminium ingot prepared by the present invention clear, smooth, and also have that technique is simple, production cost is low, be suitable for the advantage produced in enormous quantities.
Accompanying drawing explanation
Fig. 1 is the villiaumite crystal scanning electron microscope (SEM) photograph on 3003 aluminium alloy ingots surfaces of embodiment 1.
Fig. 2 is the interface macrostructure figure of 4045/3003 lamellar composite aluminium ingot of embodiment 1.
Fig. 3 is the Interface Microstructure figure of 4045/3003 lamellar composite aluminium ingot of embodiment 1.
Detailed description of the invention
Embodiment 1
The present invention is adopted to prepare 4045/3003 compound aluminium ingot.Method is as follows:
The first step: respectively 3003 aluminium alloy ingots surfaces are carried out with the sodium hydroxide solution that mass percent concentration is 5% and the hydrochloric acid solution that concentration of volume percent is 3%, removes greasy dirt and the oxide skin on surface；Weighing the potassium fluorozirconate of 40 grams and the Potassium borofluoride of 60 grams respectively, join in the hot water of 400 grams, 50 DEG C after mixing, stirring is configured to the fluorine salt aqueous solution that mass percent concentration is 20%；
Second step: fluorine salt aqueous solution is coated uniformly on the surface of 3003 aluminium alloy ingots；
3rd step: 3003 aluminium alloy ingots are toasted 1 hour at 100 DEG C, removes the moisture on 3003 aluminium alloy ingots surfaces；
4th step: 3003 aluminium alloy ingots are preheated to 400 DEG C, utilizes casting system, and 4045 aluminum alloy melts are poured into the surface of 3003 aluminium alloy ingots, and the pouring temperature of 4045 aluminum alloy melts controls, at 700 DEG C, to form 4045/3003 lamellar composite aluminium ingot after cooled and solidified.
From fig 1, it is seen that the surface of 3003 aluminium alloy ingots is coated with one layer of uniform villiaumite crystal.
From Fig. 2 it can be seen that, the compound interface of 4045/3003 lamellar composite aluminium ingot is clear, smooth.
From Fig. 3 it can be seen that, the compound interface of 4045/3003 lamellar composite aluminium ingot is metallurgical binding.
Embodiment 2
The present invention is adopted to prepare 3005/7072 compound aluminium ingot.Method is as follows:
The first step: respectively 7072 aluminium alloy ingots surfaces are carried out with the sodium hydroxide solution that mass percent concentration is 7% and the hydrochloric acid solution that concentration of volume percent is 4%, removes greasy dirt and the oxide skin etc. on surface；Weighing the potassium fluorozirconate of 45 grams and the Potassium borofluoride of 55 grams respectively, join in the hot water of 233.33 grams, 80 DEG C after mixing, stirring is configured to the fluorine salt aqueous solution that mass percent concentration is 30%；
Second step: fluorine salt aqueous solution is coated uniformly on the surface of 7072 aluminium alloy ingots；
3rd step: 7072 aluminium alloy ingots are toasted 1.5 hours at 150 DEG C, removes the moisture on 7072 aluminium alloy ingots surfaces；
4th step: 7072 aluminium alloy ingots are preheated to 450 DEG C, utilizes casting system, and 3005 aluminum alloy melts are poured into the surface of 7072 aluminium alloy ingots, and the pouring temperature of 3005 aluminum alloy melts controls, at 720 DEG C, to form 3005/7072 lamellar composite aluminium ingot after cooled and solidified.
Embodiment 3
The present invention is adopted to prepare 6063/7085 compound aluminium ingot.Method is as follows:
The first step: respectively 7085 aluminium alloy ingots surfaces are carried out with the sodium hydroxide solution that mass percent concentration is 10% and the hydrochloric acid solution that concentration of volume percent is 5%, removes greasy dirt and the oxide skin etc. on surface；Weighing the potassium fluorozirconate of 50 grams and the Potassium borofluoride of 50 grams respectively, join in the hot water of 150 grams, 100 DEG C after mixing, stirring is configured to the fluorine salt aqueous solution that mass percent concentration is 40%；
Second step: fluorine salt aqueous solution is coated uniformly on the surface of 7085 aluminium alloy ingots；
3rd step: 7085 aluminium alloy ingots are toasted 2 hours at 200 DEG C, removes the moisture on 7085 aluminium alloy ingots surfaces；
4th step: 7085 aluminium alloy ingots are preheated to 500 DEG C, utilizes casting system, and 6063 aluminum alloy melts are poured into the surface of 7085 aluminium alloy ingots, and the pouring temperature of 6063 aluminum alloy melts controls, at 740 DEG C, to form 6063/7085 lamellar composite aluminium ingot after cooled and solidified.
Claims (1)
1. the liquid-solid phase casting method of a lamellar composite aluminium ingot, it is made up of following steps: the first step: respectively aluminium alloy ingots surface is carried out with the sodium hydroxide solution that mass percent concentration is 5 ~ 10% and the hydrochloric acid solution that concentration of volume percent is 3 ~ 5%, removes greasy dirt and the oxide on surface；Second step: villiaumite solution is coated uniformly on the aluminium alloy ingots surface after cleaning；3rd step: toasted 1 ~ 2 hour at 100 ~ 200 DEG C by aluminium alloy ingots, removes the moisture on aluminium alloy ingots surface；4th step: aluminium alloy ingots is preheated to 400 ~ 500 DEG C, another kind of aluminum alloy melt is poured into the surface of aluminium alloy ingots, the pouring temperature of aluminum alloy melt controls at 700 ~ 740 DEG C, stratiform clad aluminum ingot is formed after cooled and solidified, it is characterized in that described villiaumite solution to be mass percent concentration be the potassium fluorozirconate of 20 ~ 40% and the mixed aqueous solution of Potassium borofluoride, the mass ratio of potassium fluorozirconate and Potassium borofluoride is 40 ~ 50:50~60。
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| CN104353793B true CN104353793B (en) | 2016-06-29 |
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| CN107716890A (en) * | 2017-10-11 | 2018-02-23 | 滁州沃博自动化科技有限公司 | A kind of air compressor machine exhaust-manifold high speed die casting integral formation method |
| CN111589892B (en) * | 2020-06-16 | 2021-06-22 | 南京理工大学 | Preparation method of layered aluminum-based composite material plate |
Citations (5)
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|---|---|---|---|---|
| EP0348300A1 (en) * | 1988-06-21 | 1989-12-27 | Ugine Savoie | Method and apparatus for manufacturing a multilayered composite metallic product |
| CN1852783A (en) * | 2003-06-24 | 2006-10-25 | 诺维尔里斯公司 | Method for casting composite ingot |
| CN101112717A (en) * | 2006-07-28 | 2008-01-30 | 孙爱忠 | Method for preparation of trilaminar aluminum or aluminum alloy composite material and the blank-casting device |
| CN102179486A (en) * | 2011-04-23 | 2011-09-14 | 西南大学 | Die for casting aluminum-clad magnesium alloy composite material |
| CN102407297A (en) * | 2011-11-28 | 2012-04-11 | 苏州有色金属研究院有限公司 | Method for making composite aluminum alloy round ingot blank |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348300A1 (en) * | 1988-06-21 | 1989-12-27 | Ugine Savoie | Method and apparatus for manufacturing a multilayered composite metallic product |
| CN1852783A (en) * | 2003-06-24 | 2006-10-25 | 诺维尔里斯公司 | Method for casting composite ingot |
| CN101112717A (en) * | 2006-07-28 | 2008-01-30 | 孙爱忠 | Method for preparation of trilaminar aluminum or aluminum alloy composite material and the blank-casting device |
| CN102179486A (en) * | 2011-04-23 | 2011-09-14 | 西南大学 | Die for casting aluminum-clad magnesium alloy composite material |
| CN102407297A (en) * | 2011-11-28 | 2012-04-11 | 苏州有色金属研究院有限公司 | Method for making composite aluminum alloy round ingot blank |
Non-Patent Citations (1)
| Title |
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| 钢/铝、铜/铝复合材料的制备及性能研究;张红安;《江苏大学硕士学位论文》;20071201;第16-19页第2.1.2节"固体金属表面处理" * |
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Effective date of registration: 20160727 Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: GUANGDONG INSTITUTE OF MATERIALS AND PROCESSING Patentee after: GUANGDONG XINGHU NEW MATERIAL CO., LTD. Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGDONG RESEARCH INSTITUTE OF INDUSTRIAL TECHNOLOGY (GUANGZHOU RESEARCH INSTITUTE OF NON-FERROUS METALS) Patentee before: GUANGDONG XINGHU NEW MATERIAL CO., LTD. |
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