CN116287839B - Special aluminum-alkene alloy material for door handle and preparation method thereof - Google Patents
Special aluminum-alkene alloy material for door handle and preparation method thereof Download PDFInfo
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- CN116287839B CN116287839B CN202310304263.0A CN202310304263A CN116287839B CN 116287839 B CN116287839 B CN 116287839B CN 202310304263 A CN202310304263 A CN 202310304263A CN 116287839 B CN116287839 B CN 116287839B
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- 239000000956 alloy Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 66
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 59
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000012535 impurity Substances 0.000 claims abstract description 40
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011787 zinc oxide Substances 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007670 refining Methods 0.000 claims abstract description 18
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 18
- 238000007872 degassing Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000010413 mother solution Substances 0.000 claims abstract 3
- 238000003756 stirring Methods 0.000 claims description 33
- 239000000155 melt Substances 0.000 claims description 31
- 239000000047 product Substances 0.000 claims description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- 239000012452 mother liquor Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 10
- 239000002243 precursor Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010668 complexation reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 239000011667 zinc carbonate Substances 0.000 claims description 5
- 229910000010 zinc carbonate Inorganic materials 0.000 claims description 5
- 235000004416 zinc carbonate Nutrition 0.000 claims description 5
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 claims description 5
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- GBNDTYKAOXLLID-UHFFFAOYSA-N zirconium(4+) ion Chemical compound [Zr+4] GBNDTYKAOXLLID-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 208000034656 Contusions Diseases 0.000 abstract description 2
- 208000034526 bruise Diseases 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- -1 aluminum alkene Chemical class 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010907 mechanical stirring Methods 0.000 description 3
- 239000011369 resultant mixture Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention discloses an aluminum-alkene alloy material special for a door handle and a preparation method thereof, which relate to the field of alloy materials, firstly preparing graphene coated with a zinc oxide/zirconium oxide composite film, and then smelting the alloy raw materials to obtain an aluminum alloy mother solution, adding the zinc oxide/zirconium oxide coated composite film graphene into the aluminum alloy mother solution to obtain an alloy melt, and then sequentially refining, removing impurities and degassing, and casting to obtain the aluminum alloy. The door handle product prepared by the method has high hardness and good anodic oxidation effect, effectively solves the technical problems of easy bruise and low yield in the production process caused by small hardness of the pure aluminum door handle, and has wide application prospect.
Description
Technical Field
The invention relates to the field of alloy materials, in particular to an aluminum-alkene alloy material special for a door handle and a preparation method thereof.
Background
At present, the door handle on the market is generally made of pure aluminum materials, has small density, is easy to process and form, particularly has good anodic oxidation effect, and is widely applied. However, the door handle made of pure aluminum has low hardness and low strength, so that the door handle is extremely easy to damage the surface during the production and transportation process, thereby causing poor appearance and influencing the market sales. On the other hand, the low mechanical properties of pure aluminum also affect its service life. The addition of Si, cu and other elements in pure aluminum can obviously improve the mechanical properties such as hardness and the like of the pure aluminum, however, the elements have serious influence on the anodic oxidation of the alloy, so that serious chromatic aberration can occur to the appearance of the door handle, the appearance of the door handle product is not attractive, and the sales and the use are influenced. Therefore, developing a novel aluminum alloy material with high hardness and good anodic oxidation effect is a new challenge. Theoretically, graphene has good mechanical properties, and can remarkably improve the mechanical properties such as hardness, strength and the like of pure aluminum. However, graphene and aluminum liquid are likely to react to impair the structure and further affect the strengthening effect, and in order to avoid this difficulty, it is generally necessary to perform a surface coating modification treatment on graphene.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, namely, the invention provides an aluminum-alkene alloy material and a preparation method thereof, wherein the graphene is subjected to modification of a composite film of coated nano zirconia and zinc oxide and then added into a pure aluminum matrix, so that the novel aluminum-alkene alloy material special for a door handle is prepared, the hardness of the novel aluminum-alkene alloy material is remarkably improved, the anodic oxidation effect is good, a plurality of problems of pure aluminum door handles are solved, and the novel aluminum-alkene alloy material has a very large application market.
The technical scheme of the invention is as follows:
The preparation method of the aluminum-alkene alloy material comprises the steps of firstly preparing the zinc oxide/zirconium oxide coated composite film graphene, then smelting alloy raw materials to obtain aluminum alloy mother liquor, adding the zinc oxide/zirconium oxide coated composite film graphene into the aluminum alloy mother liquor to obtain alloy melt, and then sequentially refining, removing impurities, degassing and casting.
As a preferable scheme of the invention, the preparation method of the zinc oxide/zirconia coated composite film graphene comprises the following steps:
(a) Adding graphene oxide into distilled water, and performing ultrasonic dispersion to obtain a graphene oxide aqueous solution;
(b) Adding ZrOCl 2·8H2 O and ZnCl 2 into distilled water, and performing ultrasonic dispersion to obtain Zr ion and Zn ion aqueous solution;
(c) Dropwise adding the aqueous solution obtained in the step (b) into the graphene oxide solution obtained in the step (a) to carry out a complex reaction, and obtaining a zirconium ion and zinc ion graphene oxide mixed solution after the dropwise adding is finished;
(d) Dropwise adding the (NH 4)2CO3 solution into the mixed solution of zirconium ion and zinc ion graphene oxide obtained in the step (c) to obtain coated zirconium carbonate/zinc carbonate composite film graphene precipitate, and finally filtering and drying to obtain a coated zirconium oxide/zinc oxide composite film graphene precursor;
(e) Sintering the precursor obtained in the step (d) under the protection of inert gas to obtain the coated zirconia/zinc oxide composite film graphene.
As a preferred embodiment of the present invention, the step (c) includes at least one of the following technical features: stirring is carried out while the complexation reaction, and stirring is continued after the dripping is finished, wherein the dripping speed is 0.5-2ml/min, and the stirring speed is 50-200rpm.
As a preferred scheme of the invention, the preparation method of the aluminum alloy mother liquor comprises the following steps:
And (3) at 100-200 ℃, placing a proper amount of pure aluminum ingot into a crucible, continuously heating to 650-700 ℃ for melting, removing impurities and oxides on the surface of molten liquid, adding 0.1-0.5wt% of magnesium ingot and 0.1-0.8wt% of aluminum-silicon intermediate alloy of pure aluminum, stirring for 1-3min after complete melting, keeping the speed at 10-50rpm, and standing for 3-5min to obtain aluminum alloy mother liquor.
As a preferred embodiment of the invention, the specific steps of the alloy melt are as follows:
Cooling the aluminum alloy mother liquor to 600-650 ℃, removing impurities and oxides on the surface of the alloy liquor, adding the zinc oxide/zirconium oxide coated composite film graphene into the aluminum alloy mother liquor, stirring and dispersing, wherein the stirring speed is 50-100rpm, the stirring time is 2-5min, and standing for 10-30min after complete melting to obtain an alloy melt.
As a preferable scheme of the invention, the graphene of the zinc oxide/zirconia composite film coating accounts for 0.1-1.0wt% of the aluminum alloy mother liquor.
As a preferred embodiment of the present invention, the refining comprises the steps of:
After the temperature of the alloy melt is regulated to 650-680 ℃, pressing 0.1-0.5wt% of aluminum alloy refining agent into the center of the alloy melt by a bell jar method, slowly stirring the melt, taking out the bell jar after the refining agent is completely melted for 10-20min, and simultaneously removing impurities and oxides on the surface of the melt.
As a preferred scheme of the invention, the impurity removal and degassing comprises the following steps:
After the temperature of the refined alloy melt is regulated to 660-700 ℃, pressing 0.5-1.5wt% of aluminum alloy impurity removing agent into the center of the alloy melt by a bell jar method, slowly stirring the melt to remove impurities and degassing, taking out the bell jar after the duration is 20-30min, and removing oxides and impurities on the surface of the alloy melt to obtain the mirror surface alloy melt.
As a preferred embodiment of the present invention, the casting specifically includes the steps of: regulating the temperature of the melt after impurity removal and degassing to 650-680 ℃, standing for 10-30min, pouring the melt into a door handle die with the temperature of 150-200 ℃ to obtain an alloy door handle casting, and finally, carrying out mechanical processing, polishing and anodic oxidation to obtain a door handle product.
The invention also discloses an aluminum-alkene alloy material special for the door handle, which is prepared by adopting any one of the preparation methods.
The beneficial effects of the invention are as follows:
the door handle product prepared by the method has high hardness and good anodic oxidation effect, effectively solves the technical problems of easy bruise and low yield in the production process caused by small hardness of the pure aluminum door handle, and has wide application prospect.
Drawings
FIG. 1 is an SEM morphology of the coated zirconia/zinc oxide nanoparticle composite film graphene used in examples 1-3.
Fig. 2 is a photograph of a casting of the door handle product of example 3.
Fig. 3 is a photograph of the door handle product of example 3 after anodic oxidation.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
Example 1
(1) Coating zirconium oxide/zinc oxide composite film graphene:
(a) 1g of graphene oxide was added to 2000ml of distilled water and subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a uniform graphene oxide aqueous solution.
(B) 2g of ZrOCl 2·8H2 O and 1gZnCl 2 were added to 300ml of distilled water, and the resultant mixture was subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a mixed aqueous solution of Zr ions and Zn ions.
(C) Gradually dropwise adding the solution obtained in the step (b) into the graphene oxide solution obtained in the step (a) (the dropwise adding rate is 1 ml/min) for carrying out a complexation reaction, and simultaneously carrying out mechanical stirring (the speed is 50 rpm), and continuously stirring for 5min after the dropwise adding is finished to obtain the zirconium ion-zinc ion-graphene oxide mixed solution.
(D) And (c) dropwise adding 2mol/L (NH 4)2CO3 solution) into the solution obtained in the step (c) to obtain a coated zirconium carbonate/zinc carbonate composite film graphene precipitate, and finally filtering and drying to obtain a coated zirconium oxide and zinc oxide composite film graphene precursor.
(E) And (3) sintering the precursor obtained in the step (d) for 2 hours at 900 ℃ under the protection of inert gas to obtain the coated zirconia and zinc oxide composite film graphene (figure 1).
(2) Preparing an aluminum alkene new alloy door handle:
(a) Smelting an aluminum alloy: when the crucible temperature is raised to 200 ℃, a proper amount of pure aluminum ingot is placed in the crucible, and then is continuously heated to 650 ℃ for melting, after impurities and oxides on the surface of molten liquid are removed, magnesium ingot accounting for 0.2 percent of the weight of pure aluminum and aluminum-silicon intermediate alloy accounting for 0.4 percent of the weight of pure aluminum (the silicon content is 20 percent) are added, after the pure aluminum ingot is completely melted, stirring is carried out for 3 minutes, the speed is 50rpm, and standing is carried out for 5 minutes, so that alloy mother liquor is obtained.
(D) Adding modified graphene: cooling the molten liquid obtained in the step (a) to 620 ℃, removing impurities and oxides on the surface of the alloy liquid, adding modified graphene accounting for 0.1% of the weight of the aluminum liquid into the aluminum alloy melt, mechanically stirring and dispersing at a speed of 50rpm for 3min, and standing for 30min after the molten liquid is completely melted to obtain the novel alloy melt.
(E) Refining: and (3) after the temperature of the melt in the step (d) is regulated to 660 ℃, pressing an aluminum alloy refining agent accounting for 0.5% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt, taking out the bell jar after the refining agent is completely melted for 20min, and simultaneously, clearing impurities and oxides on the surface of the melt to obtain a cleaner alloy melt.
(F) Removing impurities and degassing: and (3) adjusting the temperature of the melt in the step (e) to 670 ℃, pressing an aluminum alloy impurity removing agent accounting for 0.8% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt to remove impurities and degassing, taking out the bell jar after the duration is 30min, and meanwhile, obtaining the mirror-surface alloy melt after removing oxides and impurities on the surface of the melt.
(G) Casting: and (3) regulating the temperature of the novel melt obtained in the step (f) to 660 ℃, standing for 20min, pouring the melt into a door handle die with the temperature of 150 ℃ (the pouring time is 5 s), obtaining a novel alloy door handle casting, and finally obtaining a door handle product through machining, polishing and anodic oxidation.
Scanning the graphene coated with the zirconia/zinc oxide composite film by an electron microscope, wherein the SEM morphology is shown in figure 1, and the surface of the graphene is uniformly coated with more nano particles.
Hardness tests (microhardness test conditions: test load 300g and loading time 10 s) are carried out on the gate handle casting product and the anodized product, the Vickers hardness of the gate handle casting product and the anodized product is 90+/-10 HV and 120+/-10 HV respectively, the hardness is obviously improved, and the damage rate of the product is obviously reduced in the production process.
Example 2
(1) Coating zirconium oxide/zinc oxide composite film graphene:
(a) 1g of graphene oxide was added to 2000ml of distilled water and subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a uniform graphene oxide aqueous solution.
(B) 2g of ZrOCl 2·8H2 O and 1gZnCl 2 were added to 300ml of distilled water, and the resultant mixture was subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a mixed aqueous solution of Zr ions and Zn ions.
(C) Gradually dropwise adding the solution obtained in the step (b) into the graphene oxide solution obtained in the step (a) (the dropwise adding rate is 1 ml/min) for carrying out a complexation reaction, and simultaneously carrying out mechanical stirring (the speed is 50 rpm), and continuously stirring for 5min after the dropwise adding is finished to obtain the zirconium ion-zinc ion-graphene oxide mixed solution.
(D) And (c) dropwise adding an NH 4HCO3 solution with the concentration of 2mol/L into the solution obtained in the step (c) to obtain graphene sediment of the coated zirconium carbonate and zinc carbonate composite film, and finally filtering and drying to obtain a graphene precursor of the coated zirconium oxide/zinc oxide composite film.
(E) And (d) sintering the precursor obtained in the step (d) for 2 hours at 900 ℃ under the protection of inert gas to obtain the coated zirconia and zinc oxide composite film graphene.
(2) Preparing an aluminum alkene new alloy door handle:
(a) Smelting an aluminum alloy: when the crucible temperature is raised to 150 ℃, a proper amount of pure aluminum ingot is placed in the crucible, and then is continuously heated to 650 ℃ for melting, after impurities and oxides on the surface of molten liquid are removed, magnesium ingot accounting for 0.2 percent of the weight of pure aluminum and aluminum-silicon intermediate alloy accounting for 0.4 percent of the weight of pure aluminum (the silicon content is 20 percent) are added, after the pure aluminum ingot is completely melted, stirring is carried out for 3 minutes, the speed is 50rpm, and standing is carried out for 5 minutes, so that alloy mother liquor is obtained.
(D) Adding modified graphene: cooling the molten liquid obtained in the step (a) to 620 ℃, removing impurities and oxides on the surface of the alloy liquid, adding modified graphene accounting for 0.5% of the weight of the aluminum liquid into the aluminum alloy melt, mechanically stirring and dispersing at a speed of 50rpm for 3min, and standing for 30min after the molten liquid is completely melted to obtain the novel alloy melt.
(E) Refining: and (3) after the temperature of the melt in the step (d) is regulated to 660 ℃, pressing an aluminum alloy refining agent accounting for 0.5% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt, taking out the bell jar after the refining agent is completely melted for 20min, and simultaneously, clearing impurities and oxides on the surface of the melt to obtain a cleaner alloy melt.
(F) Removing impurities and degassing: and (3) adjusting the temperature of the melt in the step (e) to 670 ℃, pressing an aluminum alloy impurity removing agent accounting for 0.8% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt to remove impurities and degassing, taking out the bell jar after the duration is 30min, and meanwhile, obtaining the mirror-surface alloy melt after removing oxides and impurities on the surface of the melt.
(G) Casting: and (3) regulating the temperature of the novel melt obtained in the step (f) to 660 ℃, standing for 20min, pouring the melt into a door handle die with the temperature of 150 ℃ (the pouring time is 5 s), obtaining a novel alloy door handle casting, and finally obtaining a door handle product through machining, polishing and anodic oxidation.
Hardness tests (microhardness test conditions: test load 300g, loading time 10 s) are carried out on the gate handle casting product and the anodized product, the Vickers hardness of the gate handle casting product and the anodized product is 100+/-10 HV and 150+/-10 HV respectively, the hardness is remarkably improved, and the product damage rate is reduced to 0 in the production process.
Example 3
(1) Coating zirconium oxide/zinc oxide composite film graphene:
(a) 1g of graphene oxide was added to 2000ml of distilled water and subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a uniform graphene oxide aqueous solution.
(B) 2g of ZrOCl 2·8H2 O and 1gZnCl 2 were added to 300ml of distilled water, and the resultant mixture was subjected to ultrasonic dispersion (power 500w, time 5 min) to obtain a mixed aqueous solution of Zr ions and Zn ions.
(C) Gradually dropwise adding the solution obtained in the step (b) into the graphene oxide solution obtained in the step (a) (the dropwise adding rate is 1 ml/min) for carrying out a complexation reaction, and simultaneously carrying out mechanical stirring (the speed is 50 rpm), and continuously stirring for 5min after the dropwise adding is finished to obtain the zirconium ion-zinc ion-graphene oxide mixed solution.
(D) And (c) dropwise adding 2mol/L (NH 4)2CO3 solution) into the solution obtained in the step (c) to obtain graphene precipitate of the coated zirconium carbonate and zinc carbonate composite film, and finally filtering and drying to obtain a graphene precursor of the coated zirconium oxide/zinc oxide composite film.
(E) And (d) sintering the precursor obtained in the step (d) for 2 hours at 900 ℃ under the protection of inert gas to obtain the coated zirconia and zinc oxide composite film graphene.
(2) Preparing an aluminum alkene new alloy door handle:
(a) Smelting an aluminum alloy: when the crucible temperature is raised to 150 ℃, a proper amount of pure aluminum ingot is placed in the crucible, and then is continuously heated to 650 ℃ for melting, after impurities and oxides on the surface of molten liquid are removed, magnesium ingot accounting for 0.2 percent of the weight of pure aluminum and aluminum-silicon intermediate alloy accounting for 0.4 percent of the weight of pure aluminum (the silicon content is 20 percent) are added, after the pure aluminum ingot is completely melted, stirring is carried out for 3 minutes, the speed is 50rpm, and standing is carried out for 5 minutes, so that alloy mother liquor is obtained.
(D) Adding modified graphene: cooling the molten liquid obtained in the step (a) to 620 ℃, removing impurities and oxides on the surface of the alloy liquid, adding modified graphene accounting for 0.8% of the weight of the aluminum liquid into the aluminum alloy melt, mechanically stirring and dispersing at a speed of 50rpm for 3min, and standing for 30min after the molten liquid is completely melted to obtain the novel alloy melt.
(E) Refining: and (3) after the temperature of the melt in the step (d) is regulated to 660 ℃, pressing an aluminum alloy refining agent accounting for 0.5% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt, taking out the bell jar after the refining agent is completely melted for 20min, and simultaneously, clearing impurities and oxides on the surface of the melt to obtain a cleaner alloy melt.
(F) Removing impurities and degassing: and (3) adjusting the temperature of the melt in the step (e) to 670 ℃, pressing an aluminum alloy impurity removing agent accounting for 0.8% of the weight of the alloy melt into the center of the alloy melt by a bell jar method, slowly stirring the melt to remove impurities and degassing, taking out the bell jar after the duration is 30min, and meanwhile, obtaining the mirror-surface alloy melt after removing oxides and impurities on the surface of the melt.
(G) Casting: and (3) regulating the temperature of the novel melt obtained in the step (f) to 660 ℃, standing for 20min, pouring the melt into a door handle die with the temperature of 150 ℃ (the pouring time is 5 s), obtaining a novel alloy door handle casting, and finally obtaining a door handle product through machining, polishing and anodic oxidation.
Hardness tests (microhardness test conditions: test load 300g, loading time 10 s) are carried out on a door handle casting product (refer to FIG. 2) and an anodized product (refer to FIG. 3), the Vickers hardness of the door handle casting product is 120+/-5 HV and 180+/-5 HV respectively, the hardness improvement is very remarkable, and the product damage rate is reduced to 0 in the production process.
The foregoing examples have shown only the preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be pointed out that various other corresponding changes and modifications can be made by those skilled in the art in light of the above description of the technical solution and the idea, and all such changes and modifications are intended to be within the scope of the invention as defined in the appended claims.
Claims (9)
1. The preparation method of the aluminum-alkene alloy material is characterized in that zinc oxide/zirconium oxide composite film graphene is firstly prepared, then alloy raw materials are smelted to obtain aluminum alloy mother liquor, zinc oxide/zirconium oxide composite film graphene is continuously added into the aluminum alloy mother liquor to obtain alloy melt, and then refining, impurity removal, degassing and casting are sequentially carried out to obtain the aluminum-alkene alloy material; the preparation method of the zinc oxide/zirconium oxide coated composite film graphene comprises the following steps:
(a) Adding graphene oxide into distilled water, and performing ultrasonic dispersion to obtain a graphene oxide aqueous solution;
(b) ZrOCI 2·8H2 O and ZnCl 2 are added into distilled water, and are subjected to ultrasonic dispersion to obtain Zr ion and Zn ion aqueous solution;
(c) Dropwise adding the aqueous solution obtained in the step (b) into the graphene oxide solution obtained in the step (a) to carry out a complex reaction, and obtaining a zirconium ion and zinc ion graphene oxide mixed solution after the dropwise adding is finished;
(d) Dropwise adding the (NH 4)2CO3 solution into the mixed solution of zirconium ion and zinc ion graphene oxide obtained in the step (c) to obtain coated zirconium carbonate/zinc carbonate composite film graphene precipitate, and finally filtering and drying to obtain a coated zirconium oxide/zinc oxide composite film graphene precursor;
(e) Sintering the precursor obtained in the step (d) under the protection of inert gas to obtain the coated zirconia/zinc oxide composite film graphene.
2. The method for preparing an aluminum-alkene alloy according to claim 1, wherein in the step (c), at least one of the following technical features is included:
Stirring is carried out while the complexation reaction, and stirring is continued after the dripping is finished, wherein the dripping speed is 0.5-2ml/min, and the stirring speed is 50-200rpm.
3. The method for preparing an aluminum-alkene alloy material according to claim 1, wherein the method for preparing the aluminum alloy mother solution comprises the following steps:
And (3) at 100-200 ℃, placing a proper amount of pure aluminum ingot into a crucible, continuously heating to 650-700 ℃ for melting, removing impurities and oxides on the surface of molten liquid, adding 0.1-0.5wt% of magnesium ingot and 0.1-0.8wt% of aluminum-silicon intermediate alloy of pure aluminum, stirring for 1-3min after complete melting, keeping the speed at 10-50rpm, and standing for 3-5min to obtain aluminum alloy mother liquor.
4. The method for preparing an aluminum-alkene alloy material according to claim 1, wherein the specific steps of the alloy melt are as follows:
Cooling the aluminum alloy mother liquor to 600-650 ℃, removing impurities and oxides on the surface of the alloy liquor, adding the zinc oxide/zirconium oxide coated composite film graphene into the aluminum alloy mother liquor, stirring and dispersing, wherein the stirring speed is 50-100rpm, the stirring time is 2-5min, and standing for 10-30min after complete melting to obtain an alloy melt.
5. The preparation method of the aluminum-alkene alloy material according to claim 4, wherein the graphene of the coated zinc oxide/zirconium oxide composite film accounts for 0.1-1.0wt% of the aluminum alloy mother liquor.
6. The method for producing an aluminum-olefin alloy material according to claim 1, wherein the refining comprises the steps of:
After the temperature of the alloy melt is regulated to 650-680 ℃, pressing 0.1-0.5wt% of aluminum alloy refining agent into the center of the alloy melt by a bell jar method, slowly stirring the melt, taking out the bell jar after the refining agent is completely melted for 10-20min, and simultaneously removing impurities and oxides on the surface of the melt.
7. The method for preparing an aluminum-alkene alloy material according to claim 1, wherein the removing impurities and degassing comprises the following steps:
After the temperature of the refined alloy melt is regulated to 660-700 ℃, pressing 0.5-1.5wt% of aluminum alloy impurity removing agent into the center of the alloy melt by a bell jar method, slowly stirring the melt to remove impurities and degassing, taking out the bell jar after the duration is 20-30min, and removing oxides and impurities on the surface of the alloy melt to obtain the mirror surface alloy melt.
8. The method for preparing an aluminum-alkene alloy material according to claim 1, wherein the casting specifically comprises the following steps: regulating the temperature of the melt after impurity removal and degassing to 650-680 ℃, standing for 10-30min, pouring the melt into a door handle die with the temperature of 150-200 ℃ to obtain an alloy door handle casting, and finally, carrying out mechanical processing, polishing and anodic oxidation to obtain a door handle product.
9. An aluminum-alkene alloy material special for door handles, which is characterized in that the material is prepared by the preparation method of any one of claims 1-8.
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