CN108823438A - The method for preparing the low ferroaluminium of ZLD102 - Google Patents
The method for preparing the low ferroaluminium of ZLD102 Download PDFInfo
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- CN108823438A CN108823438A CN201810717259.6A CN201810717259A CN108823438A CN 108823438 A CN108823438 A CN 108823438A CN 201810717259 A CN201810717259 A CN 201810717259A CN 108823438 A CN108823438 A CN 108823438A
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- 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
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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Abstract
The invention discloses the methods for preparing the low ferroaluminium of ZLD102, including：Metallic silicon is directly added into electrolysis raw aluminum liquid and carries out melting, to obtain aluminium alloy melting；The aluminium alloy melting is refined, to obtain alloy refining molten liquid；The alloy refining molten liquid is subjected to composition adjustment, to obtain liquid before aluminium alloy is cast；Liquid is cast before the aluminium alloy is cast, and to obtain the low ferroaluminium of ZLD102, silicon content is 10-13wt% in the low ferroaluminium of the ZLD102, and iron content is not more than 0.25wt%, and calcium element content is not more than 0.015wt%.This method is not only easy to operate, the low ferroaluminium of ZLD102 of surface quality, fractograph and plasticity needed for the silicone content and calcium content before can also being cast by control aluminium alloy in liquid obtain.
Description
Technical field
The invention belongs to metallurgical technology fields, specifically, the present invention relates to the methods for preparing the low ferroaluminium of ZLD102.
Background technique
With the research and development of constantly bringing forth new ideas of electrolysis raw aluminum liquid DIRECT ALLOYING, it is added using good electrolysis high temperature raw aluminum liquid
Its metal or intermediate alloy are configured to aluminium alloy and are cast as preliminary working product, and in ZLD102 Production of casting Al alloys process
In, the chemical component in strict control cast aluminium alloy gold liquid is needed, product appearance quality is directly affected, and surface quality is most
For one of the physical and chemical index of concern.Therefore, the method for preparing ZLD102 alloy product is further improved.
Summary of the invention
The present invention is directed to solve in the related technology at least to a certain extent.For this purpose, of the invention one
Purpose is the method for proposing to prepare the low ferroaluminium of ZLD102.This method is not only easy to operate, can also be closed by control aluminium
The low iron aluminium of ZLD102 of surface quality, fractograph and plasticity needed for silicone content and calcium content before gold is cast in liquid obtain closes
Gold.
According to an aspect of the present invention, the invention proposes the methods for preparing the low ferroaluminium of ZLD102.According to this hair
Bright embodiment, the method includes：
Metallic silicon is directly added into electrolysis raw aluminum liquid and carries out melting, to obtain aluminium alloy melting；
The aluminium alloy melting is refined, to obtain alloy refining molten liquid；
The alloy refining molten liquid is subjected to composition adjustment, to obtain；
Liquid is cast before the aluminium alloy is cast, to obtain the low ferroaluminium of ZLD102, the low iron of the ZLD102
Silicon out of aluminium alloy content is 10-13wt%, and iron content is not more than 0.25wt%, and calcium element content is not more than
0.015wt%.
During Production of casting Al alloys, same trade mark finished surface quality would generally be detected with solid articles, and difficult
To be tested by cast aluminium alloy gold liquid, but inventor has found through a large amount of production practices, and the casting of the same trade mark is closed with aluminium
The surface quality of its golden finished product can change with the change of the chemical component of cast aluminium alloy gold liquid, especially for it is purer,
For the aluminium alloy finished product of the less raw aluminum liquid DIRECT ALLOYING production of impurity, surface quality is outstanding with the change of chemical component
To be obvious, in addition, different cast aluminium alloy gold finished surface matter can be obtained by the silicone content in control cast aluminium alloy gold liquid
Amount, by the calcium content in control cast aluminium alloy gold liquid, can obtain the cast aluminium alloy gold of different fractograph and plasticity at
Product.For this purpose, the method according to the above embodiment of the present invention for preparing the low ferroaluminium of ZLD102, by straight into electrolysis raw aluminum liquid
It connects and metallic silicon is added carries out melting, refining and composition adjustment is carried out to alloy refining molten liquid, it is not only easy to operate, it can be with
Silicone content and calcium content before being cast by control aluminium alloy in liquid obtain required surface quality, fractograph and plasticity
The low ferroaluminium of ZLD102.
In addition, the method according to the above embodiment of the present invention for preparing the low ferroaluminium of ZLD102 can also have it is following attached
The technical characteristic added：
In some embodiments of the invention, the refining is to reach 700-750 DEG C in the aluminium alloy melting temperature
When, nitrogen is blown into together with aluminum refining agent and is carried out in the aluminium alloy melting.Thus, it is possible to further increase
The quality of the low ferroaluminium of the ZLD102 finally obtained.
In some embodiments of the invention, the composition adjustment includes：It measures and obtains the alloy refining melting
Practical silicone content in liquid；If the practical silicone content is higher than target Si content at least 0.3wt%, to the alloy refining
The appropriate electrolysis raw aluminum liquid is added in molten liquid；If the practical silicone content is lower than target Si content at least 0.3wt%, to
Appropriate metallic silicon is added in the alloy refining molten liquid, wherein the target Si content is 10-13wt%.Thus, it is possible to
Further increase the precision of silicone content and calcium content in liquid before aluminium alloy is cast.
In some embodiments of the invention, the trade mark of the metallic silicon is at least one in 553,551,5505 and 441
Kind.Thus, it is possible to further increase the quality of the low ferroaluminium of the ZLD102 finally obtained.
In some embodiments of the invention, calcium content is not higher than 0.015wt% in the low ferroaluminium of the ZLD102.
In some embodiments of the invention, calcium content is 0.005-0.015wt% in the low ferroaluminium of the ZLD102.
Thus, it is possible to obtain the low ferroaluminium product of the better ZLD102 of plasticity.
In some embodiments of the invention, calcium content is less than 0.005wt% in the low ferroaluminium of the ZLD102.By
This, can obtain the low ferroaluminium product of ZLD102 on more preferable surface and internal soundness.
In some embodiments of the invention, the additional amount of the metallic silicon is the 12-15wt% that raw aluminum liquid is electrolysed into furnace,
Silicon content is 10-13wt% in the low ferroaluminium of the ZLD102.
In some embodiments of the invention, the additional amount of the metallic silicon is the 12- that raw aluminum liquid is electrolysed into furnace
Silicon content is 10-11.7wt% in the low ferroaluminium of 13.5wt%, the ZLD102.Thus, it is possible to obtain surface phase transformation
Shrink the low ferroaluminium product of regular ZLD102.
In some embodiments of the invention, the additional amount of the metallic silicon is the 13.5- that raw aluminum liquid is electrolysed into furnace
Silicon content is 11.7-12.1wt% in the low ferroaluminium of 14.0wt%, the ZLD102.Thus, it is possible to which it is flat to obtain surface
The low ferroaluminium product of whole ZLD102.
In some embodiments of the invention, the additional amount of the metallic silicon is the 14.0- that raw aluminum liquid is electrolysed into furnace
Silicon content is 12.1-13wt% in the low ferroaluminium of 15wt%, the ZLD102.Thus, it is possible to which it is smooth thin to obtain surface
The low ferroaluminium product of greasy, good luster ZLD102.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the low ferroaluminium of ZLD102 that calcium element content according to an embodiment of the invention is less than 0.005wt%
Appearance of fracture figure.
Fig. 2 is the low iron aluminium of ZLD102 that calcium element content according to an embodiment of the invention is 0.005-0.015wt%
The appearance of fracture figure of alloy.
Fig. 3 is the low ferroaluminium of ZLD102 that silicon content according to an embodiment of the invention is 10-11.7wt%
Appearance figure.
Fig. 4 is that the low iron aluminium of ZLD102 that silicon content according to an embodiment of the invention is 11.7-12.1wt% closes
The appearance figure of gold.
Fig. 5 is the low ferroaluminium of ZLD102 that silicon content according to an embodiment of the invention is 12.1-13wt%
Appearance figure.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the invention proposes the methods for preparing the low ferroaluminium of ZLD102.According to this hair
Bright embodiment, method include：Metallic silicon is directly added into electrolysis raw aluminum liquid and carries out melting, to obtain aluminum alloy melts
Liquid；Aluminium alloy melting is refined, to obtain alloy refining molten liquid；Alloy refining molten liquid is subjected to ingredient
Adjustment, to obtain liquid before aluminium alloy is cast；Liquid is cast before aluminium alloy is cast, and is closed to obtain the low iron aluminium of ZLD102
Gold, silicon content is 10-13wt% in the low ferroaluminium of ZLD102, and iron content is not more than 0.25wt%, and calcium constituent contains
Amount is not more than 0.015wt%.
During Production of casting Al alloys, same trade mark finished surface quality would generally be detected with solid articles, and difficult
To be tested by cast aluminium alloy gold liquid, but inventor has found through a large amount of production practices, and the casting of the same trade mark is closed with aluminium
The surface quality of its golden finished product can change with the change of the chemical component of cast aluminium alloy gold liquid, especially for it is purer,
For the aluminium alloy finished product of the less raw aluminum liquid DIRECT ALLOYING production of impurity, surface quality is outstanding with the change of chemical component
To be obvious, in addition, different cast aluminium alloy gold finished surface matter can be obtained by the silicone content in control cast aluminium alloy gold liquid
Amount, by the calcium content in control cast aluminium alloy gold liquid, can obtain the cast aluminium alloy gold of different fractograph and plasticity at
Product.For this purpose, the method according to the above embodiment of the present invention for preparing the low ferroaluminium of ZLD102, by straight into electrolysis raw aluminum liquid
It connects and metallic silicon is added carries out melting, refining and composition adjustment is carried out to alloy refining molten liquid, it is not only easy to operate, it can be with
Silicone content and calcium content before being cast by control aluminium alloy in liquid obtain required surface quality, fractograph and plasticity
The low ferroaluminium of ZLD102.
The method for preparing the low ferroaluminium of ZLD102 of the above embodiment of the present invention is described in detail below.
According to a particular embodiment of the invention, refining is when aluminium alloy melting temperature reaches 700-750 DEG C, by nitrogen
It is blown into progress in aluminium alloy melting together with aluminum refining agent.It can not only significantly improve as a result, molten to aluminium alloy
Melt the slagging-off degassing effect of liquid, and then significantly improve the physical property of the low ferroaluminium of the ZLD102 being finally prepared, moreover it is possible to
The edge crack for reducing the low ferroaluminium of ZLD102, improves the fractograph of low ferroaluminium.
According to a particular embodiment of the invention, composition adjustment includes：It measures and obtains the reality in alloy refining molten liquid
Border silicone content；If practical silicone content is higher than target Si content at least 0.3wt%, added into alloy refining molten liquid appropriate
It is electrolysed raw aluminum liquid；If practical silicone content is lower than target Si content at least 0.3wt%, added into alloy refining molten liquid suitable
Measure metallic silicon, wherein the target Si content is 10-13wt%.Thus, it is possible to which further increasing aluminium alloy casts silicon in preceding liquid
The precision of content and calcium content, and then can further help to obtain required surface quality, fractograph and plasticity
The low ferroaluminium of ZLD102.
According to a particular embodiment of the invention, the type of metallic silicon is not particularly restricted, and those skilled in the art can be with
It is selected according to actual needs, for example, metallic silicon can use the trade mark at least one of 553,551,5505 and 441
Metallic silicon, purity can change with the difference of impurity content, and inventors have found that if the purity of metallic silicon is lower than 553 boards
When number metallic silicon, it is difficult not only to locate by refining and composition adjustment controls the content of impurity component in liquid before aluminium alloy is cast
Reason technology difficulty dramatically increases but also seriously affects the quality of the low ferroaluminium product of ZLD102 finally obtained, such as product
Fractograph and plasticity, the present invention in by selection metallic silicon use 553 and the more high-quality trade mark metallic silicon when, can not only lead to
The additional amount of control metallic silicon is crossed to control the silicone content before aluminium alloy is cast in liquid, is also further conducive to control aluminium alloy casting
Impurity content and calcium content before making in liquid, and then the product of the low ferroaluminium of the ZLD102 finally obtained can be further increased
Matter.
According to a particular embodiment of the invention, calcium content is not higher than 0.015wt% in the low ferroaluminium of ZLD102.Inventor
It was found that calcium content is different in the low ferroaluminium of ZLD102, it is also not identical to be formed by fractograph and plasticity, and work as ZLD102
When calcium content is excessively high in low ferroaluminium, surface and the internal soundness that will lead to product are excessively poor and then limit its application.As a result, originally
The additional amount and purity for passing through the process conditions and metallic silicon during preparing the low ferroaluminium of ZLD102 in invention, can
It is less than 0.015wt% with the calcium content in liquid before enabling aluminum alloy to cast, and then obtains there is preferable surface and internal soundness
The low ferroaluminium of ZLD102.In addition, inventor also found, when calcium content is less than 0.005wt% in the low ferroaluminium of ZLD102,
The fractograph of low ferroaluminium is comparatively dense fine and smooth (as shown in Figure 1), is suitable for use in as intermediate alloy addition, impact property
Small components casting, and when calcium content is 0.005-0.015wt% in the low ferroaluminium of ZLD102, low ferroaluminium breaks
Mouth tissue relative coarseness (as shown in Figure 2), but plasticity enhances, and has been suitable for use in certain plastic deformation ability, communications and transportation
Small complex casting etc..As a result, in the present invention by further prepare the process conditions during the low ferroaluminium of ZLD102 with
And the additional amount and purity of metallic silicon, calcium content can be selectively obtained according to actual needs less than 0.005wt%'s
The low ferroaluminium of ZLD102 that the low ferroaluminium of ZLD102 or calcium content are 0.005-0.015wt%.
According to a particular embodiment of the invention, inventors have found that being to be electrolysed original into furnace by the additional amount of control metallic silicon
The 12-15wt% of molten aluminum can make silicon content 10-13wt% in the low ferroaluminium of ZLD102, thus, it is possible to make
The low ferroaluminium of ZLD102 has preferable comprehensive performance.In addition, inventor also found, element silicon in the low ferroaluminium of ZLD102
Content will affect the surface quality of product, when silicon content is 10-11.7wt%, the low ferroaluminium product surface of ZLD102
Internally it is recessed along middle line, surface Phase change shrinkage is regular (as shown in Figure 3), is suitable for use in the casting of transportation class complex parts
It makes；When silicon content is 11.7-12.1wt%, ZLD102 is low, and ferroaluminium product surface is smooth, middle part not to lower recess,
But it is rough, there is partial region because biggish empty (as shown in Figure 4) occurs in phase transformation volume contraction, is suitable for use in addition
It is added as intermediate alloy, ingredient is convenient for control；When silicon content is 12.1-13wt%, the low ferroaluminium of ZLD102 is produced
Product surface indentation is irregular, but the relatively smooth fine and smooth, good luster (as shown in Figure 5) of concave face, is suitable for use in the casting of construction and decoration class
Part production.As a result, the present invention in can according to actual needs, can by control fusion process in metallic silicon additional amount be into
Furnace is electrolysed the 12-13.5wt% of raw aluminum liquid, directly obtains the low ferroaluminium of ZLD102 that silicon content is 10-11.7wt%；
Or the additional amount for passing through metallic silicon in control fusion process is to directly obtain silicon into the 13.5-14.0wt% of furnace electrolysis raw aluminum liquid
Constituent content is the low ferroaluminium of ZLD102 of 12.1-13wt%；Or it is by the additional amount of metallic silicon in control fusion process
Into the 14.0-15wt% of furnace electrolysis raw aluminum liquid, directly obtains the low iron aluminium of ZLD102 that silicon content is 12.1-13wt% and close
Gold.
According to a particular embodiment of the invention, iron content is less than 0.25wt% in the low ferroaluminium of ZLD102.?
In some embodiments of the present invention, since iron content is lower, because the big atomic group that ferro element is formed is less, reduce because of iron
Content increases bring harm.Thus, it is possible to the mechanical property of the low ferroaluminium of ZLD102 be further increased, such as plasticity and toughness
Deng.
According to a particular embodiment of the invention, the low ferroaluminium of ZLD102 can for iron content be less than 0.25wt%,
Calcium element content is less than 0.015wt%, silicon content 10-13wt%, magnesium element content and contains less than 0.01wt%, titanium elements
Amount is less than 0.01wt%, copper coin cellulose content is less than 0.005wt%, Zn-ef ficiency content is less than 0.03wt%, manganese element content is less than
The product of 0.01wt%.
It, can be in conclusion by using the method for preparing the low ferroaluminium of ZLD102 of the above embodiment of the present invention
The low ferroaluminium product of required ZLD102 is selectively obtained by controlling additional amount and the purity of metallic silicon, additionally may be used
The low ferroaluminium finished product of final ZLD102 is effectively predicted to cast the chemical component in preceding liquid by control melting and aluminium alloy
Presentation quality and physical property, improve final products qualification rate, energy consumption and iron loss is greatly reduced, can be widely applied for
Field of quality control during Production of casting Al alloys.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of method for preparing the low ferroaluminium of ZLD102, which is characterized in that including：
Metallic silicon is directly added into electrolysis raw aluminum liquid and carries out melting, to obtain aluminium alloy melting；
The aluminium alloy melting is refined, to obtain alloy refining molten liquid；
The alloy refining molten liquid is subjected to composition adjustment, to obtain liquid before aluminium alloy is cast；
Liquid is cast before the aluminium alloy is cast, and to obtain the low ferroaluminium of ZLD102, the ZLD102 is low, and iron aluminium is closed
Silicon content is 10-13wt% in gold, and iron content is not more than 0.25wt%, and calcium element content is not more than 0.015wt%.
2. the method according to claim 1, wherein the refining is reached in the aluminium alloy melting temperature
At 700-750 DEG C, nitrogen is blown into together with aluminum refining agent and is carried out in the aluminium alloy melting.
3. according to the method described in claim 2, it is characterized in that, the composition adjustment includes：
It measures and obtains the practical silicone content in the alloy refining molten liquid；
If the practical silicone content is higher than target Si content at least 0.3wt%, added into the alloy refining molten liquid
The appropriate electrolysis raw aluminum liquid；
If the practical silicone content is lower than target Si content at least 0.3wt%, add into institute's alloy refining molten liquid
Add appropriate metallic silicon,
Wherein, the target Si content is 10-13wt%.
4. according to the method described in claim 3, it is characterized in that, the trade mark of the metallic silicon is 553,551,5505 and 441
At least one of.
5. according to the method described in claim 4, it is characterized in that, calcium content is not higher than in the low ferroaluminium of the ZLD102
0.015wt%,
Optionally, calcium content is 0.005-0.015wt% in the low ferroaluminium of the ZLD102,
Optionally, calcium content is less than 0.005wt% in the low ferroaluminium of the ZLD102.
6. according to the method described in claim 5, it is characterized in that, the additional amount of the metallic silicon is to be electrolysed raw aluminum liquid into furnace
Silicon content is 10-13wt% in the low ferroaluminium of 12-15wt%, the ZLD102.
7. according to the method described in claim 5, it is characterized in that, the additional amount of the metallic silicon is to be electrolysed raw aluminum liquid into furnace
Silicon content is 10-11.7wt% in the low ferroaluminium of 12-13.5wt%, the ZLD102.
8. according to the method described in claim 5, it is characterized in that, the additional amount of the metallic silicon is to be electrolysed raw aluminum liquid into furnace
Silicon content is 11.7-12.1wt% in the low ferroaluminium of 13.5-14.0wt%, the ZLD102.
9. according to the method described in claim 5, it is characterized in that, the additional amount of the metallic silicon is to be electrolysed raw aluminum liquid into furnace
Silicon content is 12.1-13wt% in the low ferroaluminium of 14.0-15wt%, the ZLD102.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6379935A (en) * | 1986-09-22 | 1988-04-09 | Sumitomo Light Metal Ind Ltd | Aluminum-alloy material combining heat resistance with wear resistance |
| CN101045970A (en) * | 2005-07-18 | 2007-10-03 | 西安工业大学 | High strength heat resistant aluminium alloy |
| CN101775529A (en) * | 2010-01-11 | 2010-07-14 | 北京科技大学 | High-strength cast aluminum-silicon alloy for engine body and preparation method thereof |
| WO2013054716A1 (en) * | 2011-10-11 | 2013-04-18 | 日本軽金属株式会社 | METHOD FOR PRODUCING ALUMINUM ALLOY IN WHICH Al-Fe-Si-BASED COMPOUND AND PRIMARY CRYSTAL Si ARE FINELY DIVIDED |
| CN106676296A (en) * | 2016-12-29 | 2017-05-17 | 新疆众和股份有限公司 | Production process of ZLD102 aluminum alloy |
-
2018
- 2018-07-03 CN CN201810717259.6A patent/CN108823438A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6379935A (en) * | 1986-09-22 | 1988-04-09 | Sumitomo Light Metal Ind Ltd | Aluminum-alloy material combining heat resistance with wear resistance |
| CN101045970A (en) * | 2005-07-18 | 2007-10-03 | 西安工业大学 | High strength heat resistant aluminium alloy |
| CN101775529A (en) * | 2010-01-11 | 2010-07-14 | 北京科技大学 | High-strength cast aluminum-silicon alloy for engine body and preparation method thereof |
| WO2013054716A1 (en) * | 2011-10-11 | 2013-04-18 | 日本軽金属株式会社 | METHOD FOR PRODUCING ALUMINUM ALLOY IN WHICH Al-Fe-Si-BASED COMPOUND AND PRIMARY CRYSTAL Si ARE FINELY DIVIDED |
| CN106676296A (en) * | 2016-12-29 | 2017-05-17 | 新疆众和股份有限公司 | Production process of ZLD102 aluminum alloy |
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