CN108425040A - A kind of Rare Earth Y modified high-strength degree can dissolve aluminium alloy and its smelting technology - Google Patents
A kind of Rare Earth Y modified high-strength degree can dissolve aluminium alloy and its smelting technology Download PDFInfo
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- CN108425040A CN108425040A CN201810330948.1A CN201810330948A CN108425040A CN 108425040 A CN108425040 A CN 108425040A CN 201810330948 A CN201810330948 A CN 201810330948A CN 108425040 A CN108425040 A CN 108425040A
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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
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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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
- 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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- 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
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Abstract
A kind of Rare Earth Y modified high-strength degree can dissolve aluminium alloy and its smelting technology, Zn contents are 0 ~ 5.0wt.% in the alloy, Si contents are 0 ~ 5.0wt.%, Mn contents are 0.1 ~ 8.0wt.%, Sn contents are 0 ~ 15.0wt.%, and Ga contents are 0 ~ 10.0wt.%, and In contents are 0.1 ~ 2.0wt.%, Y contents are 0.1 ~ 0.5wt.%, remaining is Al.Preparation method includes high melt fine aluminium ingot, proportioning addition alloying element, stirs and skim, cool down cast.As-cast grain is refined by the way that rare earth element y is added in fusion process, improves the intensity and corrosive nature of material.Prepared Rare Earth Y modified high-strength degree, which can dissolve aluminium alloy, not only has excellent mechanical property, but also has both good water-soluble energy, fully meets actual condition requirement.
Description
Technical field
The invention belongs to non-ferrous metal preparing technical fields, are related to a kind of dissolvable aluminium alloy, and in particular to a kind of Rare Earth Y
Modified high-strength degree can dissolve aluminium alloy and its smelting technology.
Background technology
Hydraulic fracturing technology is a synergy production technique for being applied to low permeability oil and gas field.The technology is in work progress
In, the operating tool string of different work layer need to be blocked using a large amount of downhole tools.If these tools can be in service phase
Between meet basic application performance requirement, and can rapidly be dissolved after military service, without cutting, keep pit shaft unimpeded.This will pole
It is big to reduce construction period, save construction cost.Therefore, a kind of high intensity soluble material is researched and developed to prepare underground fracture tool pair
It is of great significance in the stable yields and high yield for ensureing China oil field.
Currently, most common soluble material includes mainly that can dissolve organic material, can dissolve inorganic material and can dissolve
Metal material.Due to can dissolve organic material and or dissolvable inorganic material intensity is low, high temperature resistant, high-voltage performance difference or
Solution rate is slow, so it is difficult to use the higher field of Material Thermodynamics performance requirement in oil-gas field fracturing etc..Therefore, make
It is a kind of current best selection with dissolvable metal material.
United States Patent (USP)（US2007/0181224）A kind of alloy is disclosed, which includes the one kind or more for accounting for major portion
Kind active metal, and account for one or more alloyed products of a small amount of ratio.It include mainly such as metallic element gallium（Ga）, indium
（In）, zinc（Zn）, bismuth（Bi）And aluminium（Al）This kind of metallic element in the periodic table of elements the Ith and II main group.The alloy
It is characterized in that it can control its solution rate under given conditions.But the tensile strength of the alloy is only capable of reaching tens MPa,
And influence of the rare earth element y to material structure performance is not directed in patent.Patent WO2016/165041A1 proposes one kind
High intensity can dissolve aluminum alloy materials, which can meet the requirement of high mechanical properties during service, and can take
Rapid dissolving after the completion of labour.However, tensile strength of a large amount of downhole tool to material（500~600MPa）It proposes higher
It is required that.
Invention content
In order to overcome the defect of the above-mentioned prior art, the purpose of the present invention is to provide a kind of Rare Earth Y modified high-strength degree can
Aluminium alloy and its smelting technology are dissolved, rare earth element y is added in fusion process to refine as-cast grain, improves the intensity of material
And corrosive nature.Prepared Rare Earth Y modified high-strength degree, which can dissolve aluminium alloy, not only has excellent mechanical property, but also has both good
Good water-soluble energy.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of dissolvable aluminium alloy of Rare Earth Y modified high-strength degree, includes following component by mass percentage：Zn 0 ~ 5.0wt.%, Si
0 ~ 5.0wt.%, Mn 0.1 ~ 8.0wt.%, Sn 0 ~ 15.0wt.%, Ga 0 ~ 10.0wt.%, In 0.1 ~ 2.0wt.%, Y 0.1 ~
0.5wt.%, remaining is Al.
A kind of dissolvable aluminum melting process of Rare Earth Y modified high-strength degree, includes the following steps：
1）The aluminium ingot that purity is 4N is put into graphite crucible smelting furnace first, 740 ~ 780 are warming up to after special coverture is added
It is molten aluminum DEG C to be allowed to melting；
2）Prefabricated blocky Zn is added, stirs evenly, temperature recovery to keeping the temperature 15 minutes after 740 ~ 780 DEG C, be then stirred,
It skims；
3）When furnace temperature rises again is back to 740 ~ 780 DEG C, blocky Mn, Si, Sn, Ga and In are sequentially added, it is warm, stir, take off
It is 780 DEG C that furnace temperature is arranged after slag, adds rare earth element y when furnace temperature rises to 780 DEG C, stirs evenly, is refined through carbon trichloride
Degasification is skimmed after 3 minutes, is stood 15 minutes, is waited melt temperatures to be down in the mold for being cast in after 750 DEG C and preheating in advance, to make
Aluminium alloy castings are can dissolve for Rare Earth Y modified high-strength degree is gone out.
Further, in the smelting furnace, whole process protects melt using inert gases such as argon gas or nitrogen..
Further, the ingredient of the special coverture is the mixture of sheep manure and villaumite.
Further, the mold is the cylinder of diameter 40mm × long 150mm.
Further, the preheating temperature of the mold is 200 ~ 300 DEG C.
Compared with prior art, the progress major embodiment of the high-lighting substantive features of technical solution of the present invention and conspicuousness
：
1）The present invention is added to rare earth element y in fusion process, and conjunction has been refined while ensureing that material rate of dissolution is controllable
The as-cast structure of gold, improves the comprehensive mechanical property of material, the tensile strength of material can reach 300 ~ 500MPa.
2）In entire fusion process, melt is protected using argon gas, avoids the scaling loss of element.
3）Special coverture is added before melting, effectively reduces the hydrogen-sucking amount of aluminium alloy, and it is miscellaneous to avoid oxide etc.
The formation of matter.
4）Present invention process process is simple, and the material mechanical performance and solubility property prepared are good, can be directly used for making
Make the downhole tool for meeting requirement of actual working condition.
Description of the drawings
Fig. 1 is as-cast metallographic structure's photo that the prior art does not add rare earth element material；
Fig. 2 is as-cast metallographic structure's photo of material after adding rare earth element y；
Fig. 3 is that Rare Earth Y modified high-strength degree can dissolve aluminium alloy smelting schematic device, wherein 1 is argon bottle；2 be pressure gauge；3
For valve；4 be drier；5 be snorkel；6 be stirring head controller；7 be fixing bracket；8 be stirring-head；9 be injection tracheae；
10 be graphite crucible smelting furnace；11 be molten aluminium alloy.
Specific implementation mode
Technical solution to further illustrate the present invention in the following with reference to the drawings and specific embodiments：
Embodiment 1：
First by high-purity aluminium ingot（Purity 4N）It is put into graphite crucible smelting furnace, is added after special coverture and is warming up to 750 DEG C and makes
Melting be molten aluminum, then by gained molten aluminum by formula 82.0% weight be added 3.0wt.%Zn, stir evenly, temperature recovery is extremely
15 minutes are kept the temperature after 750 DEG C, is stirred, skims.When furnace temperature rises again is back to 750 DEG C, sequentially add 0.2 wt.%Mn,
1.0 wt.%Si, 10.0 wt.%Sn, 2.35wt.%Ga and 1.3 wt.%In, it is warm, stir, skim after setting furnace temperature be 780
DEG C, the rare earth element y of 0.15wt.% is added when furnace temperature rises to 780 DEG C, is stirred evenly, and is divided through carbon trichloride refining degasification 3
It skims after clock, stands 15 minutes, melt temperatures is waited to be down in the mold for being cast in after 750 DEG C and preheating in advance, it is dilute to prepare
Native Y modified high-strengths degree can dissolve aluminium alloy castings.In entire fusion process, melt is protected using argon gas, reduces alloying element
Scaling loss.After the completion of melting, tensile property test is carried out at normal temperatures to prepared material, tensile strength is
405MPa.Solubility property test is carried out to prepared material in 70 DEG C, 3%KCl solution, the rate of dissolution for measuring material is
55.7 mg/(h·cm2)。
Embodiment 2：
First by high-purity aluminium ingot（Purity 4N）It is put into graphite crucible smelting furnace, is added after special coverture and is warming up to 760 DEG C and makes
Melting be molten aluminum, then by gained molten aluminum by formula 76.0% weight be added 3.0wt.%Zn, stir evenly, temperature recovery is extremely
15 minutes are kept the temperature after 760 DEG C, is stirred, skims.When furnace temperature rises again is back to 760 DEG C, sequentially add 5.0 wt.%Mn,
3.0 wt.%Si, 10.0 wt.%Sn, 1.5 wt.%Ga and 1.0wt.%In, it is warm, stir, skim after setting furnace temperature be 780
DEG C, the rare earth element y of 0.5wt.% was added when furnace temperature rises to 780 DEG C, is stirred evenly, through carbon trichloride refining degasification 3 minutes
After skim, stand 15 minutes, wait melt temperatures to be down in the mold for being cast in after 750 DEG C and preheating in advance, to prepare Rare Earth Y
Modified high-strength degree can dissolve aluminium alloy castings.In entire fusion process, melt is protected using argon gas, reduces the burning of alloying element
Damage.After the completion of melting, tensile property test, tensile strength 324MPa have been carried out at normal temperatures to prepared material.
70 DEG C, solubility property test is carried out to prepared material in 3%KCl solution, the rate of dissolution for measuring material is 45.2 mg/
(h·cm2)。
Embodiment 3：
First by high-purity aluminium ingot（Purity 4N）It is put into graphite crucible smelting furnace, is added after special coverture and is warming up to 760 DEG C and makes
Melting be molten aluminum, then by gained molten aluminum by formula 88.5% weight be added 1.5wt.%Zn, stir evenly, temperature recovery is extremely
15 minutes are kept the temperature after 760 DEG C, is stirred, skims.When furnace temperature rises again is back to 760 DEG C, sequentially add 2.0 wt.%Mn,
2.0 wt.%Si, 1.7wt.%Sn, 3.0 wt.%Ga and 1.0wt.%In, it is warm, stir, skim after setting furnace temperature be 780 DEG C,
The rare earth element y that 0.3wt.% is added when furnace temperature rises to 780 DEG C, stirs evenly, after carbon trichloride refining degasification 3 minutes
It skims, stands 15 minutes, wait melt temperatures to be down in the mold for being cast in after 750 DEG C and preheating in advance, change to prepare Rare Earth Y
Property high intensity can dissolve aluminium alloy castings.In entire fusion process, melt is protected using argon gas, reduces the burning of alloying element
Damage.After the completion of melting, tensile property test, tensile strength 406MPa have been carried out at normal temperatures to prepared material.
70 DEG C, hanging test is carried out to prepared material in 3%KCl solution, the rate of dissolution for measuring material is 40.1 mg/ (h
cm2)。
Fig. 1, Fig. 2 are material as-cast metallographic structure photo, and Fig. 1 is the photo that material does not add rare earth element y, and Fig. 2 is
Material adds the photo after rare earth element y.By material it can be seen from photo after adding rare earth element y, crystal grain obtains
Significantly refinement, institutional framework is finer and close, and the good mechanical property of material and solubility property have obtained further embodiment.
Above example shows that present invention process process simple possible, process according to the invention are prepared dilute
Native Y modified high-strengths degree, which can dissolve aluminum alloy materials, has higher tensile strength and faster rate of dissolution, fully meets reality
Operating mode requirement.
It should be noted that embodiment described above is the better embodiment of the present invention.Except above-described embodiment with
Outside, the present invention still has other numerous embodiments.It is every using equivalence replacement formed technical solution, all fall within the present invention claims
Within the scope of protection.
Claims (6)
1. a kind of Rare Earth Y modified high-strength degree can dissolve aluminium alloy, which is characterized in that include following component by mass percentage：Zn
0 ~ 5.0wt.%, Si 0 ~ 5.0wt.%, Mn 0.1 ~ 8.0wt.%, Sn 0 ~ 15.0wt.%, Ga 0 ~ 10.0wt.%, In 0.1 ~
0.1 ~ 0.5wt.% of 2.0wt.%, Y, remaining is Al.
2. a kind of Rare Earth Y modified high-strength degree can dissolve aluminum melting process, which is characterized in that include the following steps：
1）The aluminium ingot that purity is 4N is put into graphite crucible smelting furnace first, 740 ~ 780 are warming up to after special coverture is added
It is molten aluminum DEG C to be allowed to melting；
2）Prefabricated blocky Zn is added, stirs evenly, temperature recovery to keeping the temperature 15 minutes after 740 ~ 780 DEG C, be then stirred,
It skims；
3）When furnace temperature rises again is back to 740 ~ 780 DEG C, blocky Mn, Si, Sn, Ga and In are sequentially added, it is warm, stir, take off
It is 780 DEG C that furnace temperature is arranged after slag, adds rare earth element y when furnace temperature rises to 780 DEG C, stirs evenly, is refined through carbon trichloride
Degasification is skimmed after 3 minutes, is stood 15 minutes, is waited melt temperatures to be down in the mold for being cast in after 750 DEG C and preheating in advance, to make
Aluminium alloy castings are can dissolve for Rare Earth Y modified high-strength degree is gone out.
3. a kind of Rare Earth Y modified high-strength degree according to claim 2 can dissolve aluminum melting process, which is characterized in that
In the smelting furnace, whole process protects melt using inert gases such as argon gas or nitrogen.
4. a kind of Rare Earth Y modified high-strength degree according to claim 2 can dissolve aluminum melting process, which is characterized in that
The ingredient of the special coverture is the mixture of sheep manure and villaumite.
5. a kind of Rare Earth Y modified high-strength degree according to claim 2 can dissolve aluminum melting process, which is characterized in that
The mold is the cylinder of diameter 40mm × long 150mm.
6. a kind of Rare Earth Y modified high-strength degree according to claim 2 can dissolve aluminum melting process, which is characterized in that
The preheating temperature of the mold is 200 ~ 300 DEG C.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178663A (en) * | 2013-05-27 | 2014-12-03 | 中国科学院金属研究所 | Aluminum-based alloy material for preparing disintegration fracturing balls and preparation method thereof |
| CN104480354A (en) * | 2014-12-25 | 2015-04-01 | 陕西科技大学 | Preparation method of high-strength dissolublealuminum alloy material |
| CN105950920A (en) * | 2016-05-17 | 2016-09-21 | 中国科学院金属研究所 | Aluminum base alloy soluble in water and aqueous medium environments and preparation method thereof |
-
2018
- 2018-04-13 CN CN201810330948.1A patent/CN108425040A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178663A (en) * | 2013-05-27 | 2014-12-03 | 中国科学院金属研究所 | Aluminum-based alloy material for preparing disintegration fracturing balls and preparation method thereof |
| CN104480354A (en) * | 2014-12-25 | 2015-04-01 | 陕西科技大学 | Preparation method of high-strength dissolublealuminum alloy material |
| CN105950920A (en) * | 2016-05-17 | 2016-09-21 | 中国科学院金属研究所 | Aluminum base alloy soluble in water and aqueous medium environments and preparation method thereof |
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