CN117403109A - Aluminum alloy 8A02 component standard sample and preparation method thereof - Google Patents
Aluminum alloy 8A02 component standard sample and preparation method thereof Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 82
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims description 73
- 229910045601 alloy Inorganic materials 0.000 claims description 72
- 239000011777 magnesium Substances 0.000 claims description 22
- 239000011701 zinc Substances 0.000 claims description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 13
- 238000007670 refining Methods 0.000 claims description 13
- 229910052718 tin Inorganic materials 0.000 claims description 13
- 239000010936 titanium Substances 0.000 claims description 13
- 229910052725 zinc Inorganic materials 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- -1 aluminum titanium boron Chemical group 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 28
- 239000000126 substance Substances 0.000 abstract description 16
- 238000001228 spectrum Methods 0.000 abstract description 10
- 238000012937 correction Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000002798 spectrophotometry method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000705 flame atomic absorption spectrometry Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- MLIWQXBKMZNZNF-KUHOPJCQSA-N (2e)-2,6-bis[(4-azidophenyl)methylidene]-4-methylcyclohexan-1-one Chemical compound O=C1\C(=C\C=2C=CC(=CC=2)N=[N+]=[N-])CC(C)CC1=CC1=CC=C(N=[N+]=[N-])C=C1 MLIWQXBKMZNZNF-KUHOPJCQSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical group C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- JGUQDUKBUKFFRO-CIIODKQPSA-N dimethylglyoxime Chemical compound O/N=C(/C)\C(\C)=N\O JGUQDUKBUKFFRO-CIIODKQPSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the technical field of metal materials, and particularly relates to an aluminum alloy 8A02 component standard sample and a preparation method thereof. The invention aims to solve the problem that the analysis result is not representative due to the lack of a standard sample which is compared with an analysis sample in the existing 8A02 aluminum alloy spectrum and chemical analysis. It consists of Si 0.096-0.100%, fe 0.077-0.080%, cu 0.0083-0.0087%, mn 0.0048-0.0050%, mg 0.027-0.029%, cr 0.0047-0.0049%, ni 0.0047-0.0050%, zn 0.035-0.037%, ti 0.0032-0.0034%, sn 0.177-0.181%, bi 0.241-0.245% and Al in balance. The method comprises the following steps: weighing raw materials; smelting; casting; homogenizing heat treatment. The standard sample provided by the invention is a standard sample with the same components as the chemical sample, and provides a basis for the use of modern instruments and the correction between instruments. The aluminum alloy 8A02 component standard sample prepared by the invention is used for 8A02 aluminum alloy spectrum and chemical analysis.
Description
Technical Field
The invention belongs to the technical field of metal materials, and particularly relates to an aluminum alloy 8A02 component standard sample and a preparation method thereof.
Background
The 8XXX series aluminum alloy is pure aluminum alloy added with silicon, iron and a small amount of other elements, mainly pure aluminum has low performance, and ferrosilicon is needed to be added to improve strength, performance index, recrystallization temperature and the like. Most of applications are aluminum foil, heat exchanger strips, sacrificial anodes of electric water heaters and the like, the existing direct-reading spectrometer for spectrum analysis is provided with a permanent curve of a required element, after standardization, only an as-cast spectrum single-point standard sample is required to be subjected to curve correction, and because a third element of spectrum analysis influences an analysis result, a standard sample with consistent component content and consistent organization state with the analysis sample is required. Therefore, a standard sample of the aluminum alloy 8A02 component needs to be developed to meet the spectrum analysis requirements of the aluminum alloy 8A02 and the similar aluminum alloys.
The direct-reading spectrometer analysis is simple and efficient, but has the limitation, such as the reasons of larger component segregation, special shape and the like of the product, so that the analysis result is not representative, an ICP analysis method can be adopted at the moment, the ICP method also has the interference of a third element, and the content of a standard sample and an analysis sample is required to be consistent, so that the standard sample of the component of the aluminum alloy 8A02 is required to be developed to meet the chemical analysis requirements of the aluminum alloy 8A02 and similar aluminum alloys. However, at present, no method suitable for the standard sample of the aluminum alloy 8A02 component exists in the markets at home and abroad.
Disclosure of Invention
The invention aims to solve the problem that the analysis result is not representative due to the lack of a standard sample which is compared with an analysis sample in the existing 8A02 aluminum alloy spectrum and chemical analysis, and provides an aluminum alloy 8A02 component standard sample and a preparation method thereof.
The aluminum alloy 8A02 component standard sample consists of, by mass, 0.096-0.100% of Si, 0.077-0.080% of Fe, 0.0083-0.0087% of Cu, 0.0048-0.0050% of Mn, 0.027-0.029% of Mg, 0.0047-0.0049% of Cr, 0.0047-0.0050% of Ni, 0.035-0.037% of Zn, 0.0032-0.0034% of Ti, 0.177-0.181% of Sn, 0.241-0.245% of Bi and the balance of Al.
The preparation method of the aluminum alloy 8A02 component standard sample is completed according to the following steps:
1. weighing: according to the mass percentage, 0.096-0.100% of Si, 0.077-0.080% of Fe, 0.0083-0.0087% of Cu, 0.0048-0.0050% of Mn, 0.027-0.029% of Mg, 0.0047-0.0049% of Cr, 0.0047-0.0050% of Ni, 0.035-0.037% of Zn, 0.0032-0.0034% of Ti, 0.177-0.181% of Sn, 0.241-0.245% of Bi and the balance of Al are mixed, an aluminum ingot, industrial pure magnesium, industrial pure zinc, industrial pure tin, an AlSi20 intermediate alloy, an AlCu40 intermediate alloy, an AlMn10 intermediate alloy, an AlFe10 intermediate alloy, an AlCr3 intermediate alloy, an AlTi5B0.2 intermediate alloy, an AlNi20 intermediate alloy and an AlBi5 intermediate alloy are respectively weighed as raw materials for smelting;
2. smelting: adding the weighed aluminum ingot, industrial pure zinc, industrial pure tin, alSi20 intermediate alloy, alCu40 intermediate alloy, alMn10 intermediate alloy, alFe10 intermediate alloy, alCr3 intermediate alloy, alNi20 intermediate alloy and AlBi5 intermediate alloy into a smelting furnace, heating to 770-790 ℃, adding a refining agent for slagging after the materials in the furnace are completely melted, and adding industrial pure magnesium after slagging is finished to obtain an aluminum alloy solution;
3. casting: introducing the aluminum alloy melt obtained in the second step into a heat preservation furnace at 750-780 ℃ and introducing argon, then adding AlTi5B0.2 intermediate alloy at the speed of 90mm/min for purifying and refining, standing for 30-35 min, and then casting to obtain an aluminum alloy cast ingot;
4. and (3) placing the aluminum alloy cast ingot obtained in the step (III) into an annealing furnace for homogenizing heat treatment, and then cooling at room temperature to obtain an aluminum alloy 8A02 component standard sample.
The invention has the beneficial effects that:
the standard sample of the aluminum alloy 8A02 component prepared by the method contains Si, fe, cu, mn, mg, cr, ni, zn, ti, sn, bi eleven elements, can be suitable for 8A02 aluminum alloy, and solves the problem that the multi-element aluminum alloy spectrum and chemical standard sample which are not suitable for 8A02 aluminum alloy materials in the market at home and abroad and the corresponding preparation method are not available. The standard sample is a standard sample with the same component as the chemical sample in spectrum, and provides a basis for the use of modern instruments and the correction between instruments. The standard sample prepared by the invention meets the requirements of GB/T15000 standard sample working guide and YS/T409 standard sample technical Specification for nonferrous metal product analysis.
The aluminum alloy 8A02 component standard sample prepared by the invention is used for 8A02 aluminum alloy spectrum and chemical analysis.
Drawings
FIG. 1 is a microstructure of a standard sample of the component 8A02 of the aluminum alloy in the first embodiment;
FIG. 2 is a physical view of a standard sample of the component of the aluminum alloy 8A02 in example one.
Detailed Description
The first embodiment is as follows: the aluminum alloy 8A02 component standard sample of the embodiment comprises, by mass, 0.096 to 0.100% Si, 0.077 to 0.080% Fe, 0.0083 to 0.0087% Cu, 0.0048 to 0.0050% Mn, 0.027 to 0.029% Mg, 0.0047 to 0.0049% Cr, 0.0047 to 0.0050% Ni, 0.035 to 0.037% Zn, 0.0032 to 0.0034% Ti, 0.177 to 0.181% Sn, 0.241 to 0.245% Bi, and the balance Al.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: the aluminum alloy 8A02 component standard sample consists of 0.0965% of Si, 0.0772% of Fe, 0.00834% of Cu, 0.00482% of Mn, 0.0274% of Mg, 0.00473% of Cr, 0.00471% of Ni, 0.0351% of Zn, 0.00322% of Ti, 0.177% of Sn, 0.241% of Bi and the balance of Al according to mass percentage. The other is the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: the aluminum alloy 8A02 component standard sample consists of 0.0997% of Si, 0.0799% of Fe, 0.00872% of Cu, 0.00503% of Mn, 0.0294% of Mg, 0.00487% of Cr, 0.00501% of Ni, 0.0368% of Zn, 0.00338% of Ti, 0.181% of Sn, 0.245% of Bi and the balance of Al according to mass percentage. The other is the same as the first or second embodiment.
The specific embodiment IV is as follows: the preparation method of the aluminum alloy 8A02 component standard sample in the embodiment is completed by the following steps:
1. weighing: according to the mass percentage, 0.096-0.100% of Si, 0.077-0.080% of Fe, 0.0083-0.0087% of Cu, 0.0048-0.0050% of Mn, 0.027-0.029% of Mg, 0.0047-0.0049% of Cr, 0.0047-0.0050% of Ni, 0.035-0.037% of Zn, 0.0032-0.0034% of Ti, 0.177-0.181% of Sn, 0.241-0.245% of Bi and the balance of Al are mixed, an aluminum ingot, industrial pure magnesium, industrial pure zinc, industrial pure tin, an AlSi20 intermediate alloy, an AlCu40 intermediate alloy, an AlMn10 intermediate alloy, an AlFe10 intermediate alloy, an AlCr3 intermediate alloy, an AlTi5B0.2 intermediate alloy, an AlNi20 intermediate alloy and an AlBi5 intermediate alloy are respectively weighed as raw materials for smelting;
2. smelting: adding the weighed aluminum ingot, industrial pure zinc, industrial pure tin, alSi20 intermediate alloy, alCu40 intermediate alloy, alMn10 intermediate alloy, alFe10 intermediate alloy, alCr3 intermediate alloy, alNi20 intermediate alloy and AlBi5 intermediate alloy into a smelting furnace, heating to 770-790 ℃, adding a refining agent for slagging after the materials in the furnace are completely melted, and adding industrial pure magnesium after slagging is finished to obtain an aluminum alloy solution;
3. casting: introducing the aluminum alloy melt obtained in the second step into a heat preservation furnace at 750-780 ℃ and introducing argon, then adding AlTi5B0.2 intermediate alloy at the speed of 90mm/min for purifying and refining, standing for 30-35 min, and then casting to obtain an aluminum alloy cast ingot;
4. and (3) placing the aluminum alloy cast ingot obtained in the step (III) into an annealing furnace for homogenizing heat treatment, and then cooling at room temperature to obtain an aluminum alloy 8A02 component standard sample.
In the embodiment, the effective crystallization height of the hot top short crystallizer is small, the cooling speed of the cast ingot is improved, the intra-crystal structure of the cast ingot is thinner, the liquid cavity of the cast ingot is shallower, and the transition zone is narrower, so that the density of the cast ingot is improved, and the chemical components are distributed more uniformly along the section of the cast ingot.
In this embodiment, the aluminum ingot is an aluminum ingot of 99.99% or more grade.
In this embodiment, B is not analyzed and is only helpful for the casting process.
Fifth embodiment: the fourth difference between this embodiment and the third embodiment is that: in the second step, the refining agent is RJ1-1 refining agent, and the adding amount is 5-6 kg/t. The other is the same as in the fourth embodiment.
Specific components of the RJ1-1 refining agent according to the present embodiment are referred to YS/T491-2005.
Specific embodiment six: the present embodiment differs from the fourth or fifth embodiment in that: in the third step, argon is introduced with the purity more than or equal to 99.996 percent and the gas flow rate of 15nm 3 /hr. The others are the same as those of the fourth or fifth embodiment.
Seventh embodiment: the present embodiment differs from one of the fourth to sixth embodiments in that: in the third step, the AlTi5B0.2 intermediate alloy is aluminum titanium boron wire, and the addition amount is 3kg/t. The others are the same as those of the fourth to sixth embodiments.
Eighth embodiment: the present embodiment differs from one of the fourth to seventh embodiments in that: and in the third step, semi-continuous hot top casting is adopted, a hot top short crystallizer with the specification of phi 65mm and the effective height of 8-10 mm is adopted, the casting temperature is 670-700 ℃, the casting speed is 170-190 mm/min, and the cooling water strength is 0.05-0.10 MPa. The others are the same as in one of the fourth to seventh embodiments.
Detailed description nine: the present embodiment differs from one of the fourth to eighth embodiments in that: parameters of the homogenization heat treatment in the fourth step: the average fire temperature is 460-490 ℃ and the heat preservation time is 24 hours. The others are the same as in one of the fourth to eighth embodiments.
Detailed description ten: this embodiment differs from one of the fourth to ninth embodiments in that: in the fourth step, the aluminum alloy 8a02 component standard sample is in a block shape or a chip shape. The others are the same as in one of the fourth to ninth embodiments.
The present invention is not limited to the above embodiments, and the object of the invention can be achieved by one or a combination of several embodiments.
Embodiment one: the aluminum alloy 8A02 component standard sample of the present example comprises, by mass, 0.0982% Si, 0.0794% Fe, 0.00852% Cu, 0.00493% Mn, 0.0285% Mg, 0.00487% Cr, 0.00476% Ni, 0.0365% Zn, 0.00333% Ti, 0.179% Sn, 0.243% Bi, and the balance Al.
The preparation method of the aluminum alloy 8A02 component standard sample is completed according to the following steps:
1. weighing: the method comprises the steps of (1) preparing an aluminum ingot, an industrial pure magnesium, an industrial pure zinc, an industrial pure tin, an AlSi20 intermediate alloy, an AlCu40 intermediate alloy, an AlMn10 intermediate alloy, an AlFe10 intermediate alloy, an AlCr3 intermediate alloy, an AlTi5B0.2 intermediate alloy, an AlNi20 intermediate alloy and an AlBi5 intermediate alloy according to the mass percentage of 0.0982% of Si, 0.0794% of Fe, 0.00852% of Cu, 0.00493% of Mn, 0.0285% of Mg, 0.00487% of Cr, 0.00476% of Ni, 0.0365% of Zn, 0.00333% of Ti, 0.179% of Sn, 0.243% of Bi and the balance of Al, wherein the aluminum ingot, the industrial pure magnesium, the industrial pure zinc, the industrial pure tin, the AlSi20 intermediate alloy, the AlCu40 intermediate alloy, the AlMn10 intermediate alloy, the AlCr3 intermediate alloy, the AlTi5B0.2 intermediate alloy and the AlBi5 intermediate alloy are respectively;
2. smelting: adding the weighed aluminum ingot, industrial pure zinc, industrial pure tin, alSi20 intermediate alloy, alCu40 intermediate alloy, alMn10 intermediate alloy, alFe10 intermediate alloy, alCr3 intermediate alloy, alNi20 intermediate alloy and AlBi5 intermediate alloy into a small smelting furnace, heating to 790 ℃, adding a refining agent for slagging after the materials in the furnace are completely melted, and adding industrial pure magnesium after slagging is finished to obtain an aluminum alloy solution;
3. casting: introducing the aluminum alloy melt obtained in the second step into a heat preservation furnace at 780 ℃ and introducing argon, then adding aluminum titanium boron wires (AlTi5B0.2 intermediate alloy) at a speed of 90mm/min for purification and refinement, standing for 35min, and casting by adopting a hot top short crystallizer with a specification of phi 65mm and an effective height of 8-10 mm, wherein the casting temperature is 684 ℃, the casting speed is 175mm/min, and the cooling water strength is 0.06MPa, so as to obtain an aluminum alloy cast ingot;
4. and (3) placing the aluminum alloy cast ingot obtained in the step (III) into an annealing furnace for homogenizing heat treatment, controlling the homogenizing temperature to be 480 ℃, keeping the temperature for 24 hours, and then cooling under the room temperature condition to obtain an aluminum alloy 8A02 component standard sample.
In the second embodiment, the model of the refining agent is RJ1-1, the specific components refer to YS/T491-2005, and the adding amount is 6Kg/T.
Argon is introduced in the third step of the embodiment: argon purity is more than or equal to 99.996%, and gas flow is 15nm 3 /hr。
In the third step of the embodiment, the adding amount of the aluminum titanium boron wire is 3Kg per ton of aluminum alloy solution.
The casting described in step three of this example uses a semi-continuous "hot top" casting.
The standard sample of the aluminum alloy 8A02 component prepared in the embodiment takes 55-60 mm as a sample at the two ends and the middle after cutting off at least 300mm at the two ends respectively; the metallographic examination of the sample structure is carried out strictly according to GB/T3246.2-2012 Standard of method for inspecting the macrostructure of deformed aluminum and aluminum alloy products, and the internal structure of the prepared standard sample is compact and has no defects of air holes, slag inclusion and the like as can be seen from figures 1 and 2.
The aluminum alloy 8A02 component standard sample prepared in the embodiment is processed into 200-250 samples with phi 55 multiplied by 35mm, then 20 samples are randomly selected, numbered according to the sequence, and spectral standard sample component uniformity inspection is carried out according to the requirements of YS/T409 standard sample technical Specification for nonferrous metal product analysis; checking three different parts on the section of the extracted sample on a photoelectric spectrometer, and counting the variance of the checking result to obtain the component uniformity data of the spectrum standard sample;
the aluminum alloy 8A02 component standard sample prepared in the embodiment is processed into 1mm aluminum alloy scraps, and the processing parameters are as follows: the translation speed of the milling cutter is 90 mm/min-110 mm/min, the rotating speed of the milling cutter is 25 mm/min-35 mm/min, the milling chip depth is 5 mm-6 mm, the aluminum alloy chips are fully and uniformly mixed by a quartering method, and the aluminum alloy chips are screened: taking 16-mesh undersize and 32-mesh oversize; 50 g/bottle of chemical sample 100 bottles, randomly extracting 20 bottles, numbering according to the sequence, measuring the element content of the sample according to YS/T409 standard sample technical Specification for nonferrous metal product analysis, and performing chemical standard sample component uniformity inspection, wherein the detection method is shown in Table 1; wherein, the minimum sample weighing amount for the chemical standard sample component uniformity test is 0.1g, and the test result is counted by a variance method.
TABLE 1
| Element(s) | Analysis method | Element(s) | Analysis method |
| Si | Silicon molybdenum blue spectrophotometry | Ni | Dimethylglyoxime spectrophotometry |
| Fe | O-phenanthroline spectrophotometry | Zn | Flame atomic absorption spectrometry |
| Cu | Flame atomic absorption spectrometry | Ti | Dianthipine methane spectrophotometry |
| Mn | Potassium periodate spectrophotometry | Sn | Inductively coupled plasma atomic emission spectrometry |
| Mg | Flame atomic absorption spectrometry | Bi | Spectrophotometry of potassium iodide |
| Cr | Dibenzoyl dihydrazide photometry |
And (3) setting: (1) Except for northeast light alloy limited liability company, 7 furniture units with standard sample fixed value qualification are specially invited to perform fixed value analysis, and the chemical samples are sent to 7 units to perform fixed value analysis; (2) According to GB/T20975 'aluminum and aluminum alloy chemical analysis method', one or more accurate and reliable analysis methods in the method are selected for carrying out collaborative fixed value analysis and data processing on data reported by each analysis unit; (3) The extremely poor is checked according to the allowable difference of YS/T409 standard sample technical Specification for nonferrous metal product analysis, if abnormal value appears, the original laboratory is required to recheck the suspicious value, and the original value after rechecking and rejecting is summarized and checked to check the normalization of all data by the Charpy-Weilck method.
According to YS/T409 standard sample technical specification for nonferrous metal product analysis, taking the average value of data which is subject to normal distribution as a single measurement value to form a group of new data, checking whether the data of each group are of equal precision or not by using a Grabbs method, then checking whether the data of each group are of equal precision by using a Kevlar method, after processing each group of data, calculating the arithmetic average value and standard deviation of each group of data, and carrying out modification on the effective digit number of a standard value according to GB 8170 data modification rule, wherein the obtained data is the standard value and standard deviation of an aluminum alloy 8A02 component standard sample.
The standard values and the extension uncertainties of the aluminum alloy chemical standard samples obtained in the embodiment are shown in table 2, the standard values and the extension uncertainties of the aluminum alloy spectrum standard samples are shown in table 3, and as can be seen from tables 2 and 3, the standard samples prepared in the embodiment are not only suitable for chemical analysis of 8A02 aluminum alloy, but also standard samples with the same components as the chemical samples in spectrum, and provide basis for use of modern instruments and correction between instruments.
TABLE 2
TABLE 3 Table 3
Claims (10)
1. The aluminum alloy 8A02 component standard sample is characterized by comprising, by mass, 0.096-0.100% of Si, 0.077-0.080% of Fe, 0.0083-0.0087% of Cu, 0.0048-0.0050% of Mn, 0.027-0.029% of Mg, 0.0047-0.0049% of Cr, 0.0047-0.0050% of Ni, 0.035-0.037% of Zn, 0.0032-0.0034% of Ti, 0.177-0.181% of Sn, 0.241-0.245% of Bi and the balance of Al.
2. The aluminum alloy 8A02 component standard sample according to claim 1, wherein the aluminum alloy 8A02 component standard sample comprises, by mass, 0.0965% Si, 0.0772% Fe, 0.00834% Cu, 0.00482% Mn, 0.0274% Mg, 0.00473% Cr, 0.00471% Ni, 0.0351% Zn, 0.00322% Ti, 0.177% Sn, 0.241% Bi, and the balance Al.
3. The aluminum alloy 8A02 component standard sample according to claim 1, wherein the aluminum alloy 8A02 component standard sample comprises, by mass, 0.0997% Si, 0.0799% Fe, 0.00872% Cu, 0.00503% Mn, 0.0294% Mg, 0.00487% Cr, 0.00501% Ni, 0.0368% Zn, 0.00338% Ti, 0.181% Sn, 0.245% Bi, and the balance Al.
4. The method for preparing the aluminum alloy 8A02 component standard sample according to claim 1, wherein the method for preparing the aluminum alloy 8A02 component standard sample is completed by the following steps:
1. weighing: according to the mass percentage, 0.096-0.100% of Si, 0.077-0.080% of Fe, 0.0083-0.0087% of Cu, 0.0048-0.0050% of Mn, 0.027-0.029% of Mg, 0.0047-0.0049% of Cr, 0.0047-0.0050% of Ni, 0.035-0.037% of Zn, 0.0032-0.0034% of Ti, 0.177-0.181% of Sn, 0.241-0.245% of Bi and the balance of Al are mixed, an aluminum ingot, industrial pure magnesium, industrial pure zinc, industrial pure tin, an AlSi20 intermediate alloy, an AlCu40 intermediate alloy, an AlMn10 intermediate alloy, an AlFe10 intermediate alloy, an AlCr3 intermediate alloy, an AlTi5B0.2 intermediate alloy, an AlNi20 intermediate alloy and an AlBi5 intermediate alloy are respectively weighed as raw materials for smelting;
2. smelting: adding the weighed aluminum ingot, industrial pure zinc, industrial pure tin, alSi20 intermediate alloy, alCu40 intermediate alloy, alMn10 intermediate alloy, alFe10 intermediate alloy, alCr3 intermediate alloy, alNi20 intermediate alloy and AlBi5 intermediate alloy into a smelting furnace, heating to 770-790 ℃, adding a refining agent for slagging after the materials in the furnace are completely melted, and adding industrial pure magnesium after slagging is finished to obtain an aluminum alloy solution;
3. casting: introducing the aluminum alloy melt obtained in the second step into a heat preservation furnace at 750-780 ℃ and introducing argon, then adding AlTi5B0.2 intermediate alloy at the speed of 90mm/min for purifying and refining, standing for 30-35 min, and then casting to obtain an aluminum alloy cast ingot;
4. and (3) placing the aluminum alloy cast ingot obtained in the step (III) into an annealing furnace for homogenizing heat treatment, and then cooling at room temperature to obtain an aluminum alloy 8A02 component standard sample.
5. The method for preparing an aluminum alloy 8A02 component standard sample according to claim 4, wherein the refining agent in the second step is RJ1-1 refining agent, and the adding amount is 5-6 kg/t.
6. The method for preparing an aluminum alloy 8A02 component standard sample according to claim 4, wherein the argon gas is introduced in the third step to have a purity of 99.996% or more and a gas flow of 15nm 3 /hr。
7. The method for preparing an aluminum alloy 8A02 component standard sample according to claim 4, wherein in the third step, the AlTi5B0.2 intermediate alloy is aluminum titanium boron wire, and the addition amount is 3kg/t.
8. The method for preparing an aluminum alloy 8A02 component standard sample according to claim 4, wherein in the third step, semi-continuous hot top casting is adopted, a hot top short crystallizer with the specification of phi 65mm and the effective height of 8-10 mm is adopted, the casting temperature is 670-700 ℃, the casting speed is 170-190 mm/min, and the cooling water strength is 0.05-0.10 MPa.
9. The method for preparing a standard sample of aluminum alloy 8a02 component according to claim 4, wherein the parameters of the homogenization heat treatment in the fourth step: the average fire temperature is 460-490 ℃ and the heat preservation time is 24 hours.
10. The method of preparing a standard sample of aluminum alloy 8A02 as claimed in claim 4, wherein in the fourth step, the standard sample of aluminum alloy 8A02 is in the form of a block or chip.
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