CN115572863A - Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof - Google Patents
Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof Download PDFInfo
- Publication number
- CN115572863A CN115572863A CN202211256181.5A CN202211256181A CN115572863A CN 115572863 A CN115572863 A CN 115572863A CN 202211256181 A CN202211256181 A CN 202211256181A CN 115572863 A CN115572863 A CN 115572863A
- Authority
- CN
- China
- Prior art keywords
- aluminum
- alloy
- parts
- silicon
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910000676 Si alloy Inorganic materials 0.000 title claims abstract description 75
- 229910018566 Al—Si—Mg Inorganic materials 0.000 title claims abstract description 26
- 238000004512 die casting Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 61
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000003973 paint Substances 0.000 claims abstract description 43
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011701 zinc Substances 0.000 claims abstract description 37
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 37
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 23
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011651 chromium Substances 0.000 claims abstract description 19
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 19
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 77
- 239000000956 alloy Substances 0.000 claims description 77
- 238000001816 cooling Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 25
- 238000007747 plating Methods 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 25
- 230000032683 aging Effects 0.000 claims description 23
- 238000005266 casting Methods 0.000 claims description 23
- 238000010791 quenching Methods 0.000 claims description 23
- 230000000171 quenching effect Effects 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 18
- 229910000838 Al alloy Inorganic materials 0.000 claims description 17
- 238000003723 Smelting Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 10
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 5
- 239000011874 heated mixture Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 238000005201 scrubbing Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000012258 stirred mixture Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 6
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 7
- 238000005336 cracking Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910002058 ternary alloy Inorganic materials 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
-
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
Landscapes
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and a preparation method thereof, wherein the Al-Si-Mg series hypoeutectic aluminum-silicon alloy is prepared from the following components: according to the weight parts, 70-80 parts of aluminum material, 3-5 parts of silicon powder, 3-4 parts of magnesium powder, 0.5-2 parts of copper powder, 0.5-1 part of chromium, 2-3 parts of aluminum-silicon alloy, 1-3 parts of aluminum-magnesium alloy, 5-6 parts of rare earth, 3-4 parts of zinc block and 3-4 parts of anticorrosive paint.
Description
Technical Field
The invention relates to the technical field of hypoeutectic aluminum-silicon alloy, in particular to Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and a preparation method thereof.
Background
The aluminum alloy is an alloy which takes aluminum as a base and is added with a certain amount of other alloying elements, is one of light metal materials, and the hypoeutectic aluminum-silicon alloy is a cast Al-Si series aluminum alloy and is the most widely applied aluminum alloy at present. With the development of the alloy, magnesium is added into the silicon-aluminum alloy to form an Al-Si-Mg ternary alloy system, and the Al-Si-Mg ternary alloy system has the advantages of good fluidity, good air tightness, small shrinkage rate and hot cracking tendency, moderate strength and elongation and the like.
With the continuous development of the technology, the requirements of the production industry on aluminum alloy are higher, and although the existing hypoeutectic aluminum-silicon alloy has good fluidity, good air tightness and shrinkage rate, the existing hypoeutectic aluminum-silicon alloy cannot give consideration to toughness, corrosion resistance and wear resistance, so that the hypoeutectic aluminum-silicon alloy is not durable enough.
Disclosure of Invention
The invention aims to provide an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and a preparation method thereof, and aims to solve the problems that the requirements of the production industry on aluminum alloy are higher along with the continuous development of the technology in the background technology, and the existing hypoeutectic aluminum-silicon alloy has good fluidity, good air tightness and shrinkage rate, but cannot give consideration to toughness, corrosion resistance and wear resistance, so that the hypoeutectic aluminum-silicon alloy is not durable enough.
In order to achieve the purpose, the invention provides the following technical scheme: an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting is prepared from the following components: 70-80 parts of aluminum material, 3-5 parts of silicon powder, 3-4 parts of magnesium powder, 0.5-2 parts of copper powder, 0.5-1 part of chromium, 2-3 parts of aluminum-silicon alloy, 1-3 parts of aluminum-magnesium alloy, 5-6 parts of rare earth, 3-4 parts of zinc block and 3-4 parts of anticorrosive paint.
As a preferred technical scheme of the invention, the paint comprises the following components: 76 parts of aluminum material, 3 parts of silicon powder, 3 parts of magnesium powder, 0.5 part of copper powder, 0.5 part of chromium, 2 parts of aluminum-silicon alloy, 1 part of aluminum-magnesium alloy, 6 parts of rare earth, 4 parts of zinc block and 4 parts of anticorrosive paint.
As a preferred technical scheme of the invention, the medicine comprises the following components: 73 parts of aluminum material, 5 parts of silicon powder, 3 parts of magnesium powder, 2 parts of copper powder, 1 part of chromium, 2 parts of aluminum-silicon alloy, 3 parts of aluminum-magnesium alloy, 5 parts of rare earth, 3 parts of zinc block and 3 parts of anticorrosive paint.
As a preferred technical scheme of the invention, the paint comprises the following components: according to the weight portion, 79 portions of aluminum material, 3 portions of silicon powder, 3 portions of magnesium powder, 0.5 portion of copper powder, 0.5 portion of chromium, 2 portions of aluminum-silicon alloy, 1 portion of aluminum-magnesium alloy, 5 portions of rare earth, 3 portions of zinc block and 3 portions of anticorrosive paint.
A preparation method of Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting comprises the following steps:
s1, material pretreatment: scrubbing the aluminum material in water to remove dirt adhered to the surface, cleaning the aluminum material by using an aluminum alloy cleaning agent, and drying the cleaned aluminum material;
s2, smelting and mixing: placing the aluminum material treated in the step S1 in a smelting and heating furnace, heating the aluminum material to a molten state, continuously stirring until the aluminum material is completely molten and no lump exists in the aluminum liquid, adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy into the molten aluminum liquid, mixing and stirring the alloy liquid, and continuously heating until all solid state materials are molten;
s3, fusing tailings: sequentially adding copper powder and chromium into the heated and stirred mixture, stirring and melting, finally adding rare earth and stirring, and continuously heating the final mixed liquid;
s4, alloy casting: casting the finally mixed liquid metal into a casting cavity of an alloy mold, cooling and solidifying to obtain aluminum-silicon alloy, and polishing rough burrs and burrs on the surface of a cast alloy product;
s5, quenching and aging: quenching the alloy formed in the step S4, then performing aging treatment, and standing and naturally cooling after quenching and aging are completed;
s6, plating treatment: firstly, performing dust removal treatment on the fully cooled hypoeutectic aluminum-silicon alloy in the step S4 to remove some dust adhered to the surface, then heating and melting a zinc block, performing zinc plating treatment on the surface of the alloy in a hot galvanizing mode, performing secondary zinc plating after standing and cooling after primary zinc plating, and forming a protective layer on the surface of the alloy after zinc plating and cooling are completed;
s7, surface layer protection: polishing the surface of the alloy after the galvanization in the step S6, coating an anticorrosive paint on the surface of the alloy, drying the anticorrosive paint, coating two layers of anticorrosive paint, and naturally cooling the dried anticorrosive paint;
s8, subpackaging of aluminum-silicon alloy: cutting the large alloy plate or the alloy block into small blocks according to the required size by a cutting machine, and then boxing the alloy product.
In a preferred embodiment of the present invention, the drying time in the pretreatment of the material in the step S1 is 10min, and the drying is performed to remove moisture on the surface of the material.
As a preferable technical scheme of the invention, the silicon powder, the magnesium powder, the aluminum-silicon alloy and the aluminum-magnesium alloy are added in the step S2 in a smelting and mixing sequence, the time for mixing and stirring the alloy liquid in the step S2 is 35-45min, and the silicon powder, the magnesium powder, the aluminum-silicon alloy and the aluminum-magnesium alloy are all one of main materials for producing hypoeutectic aluminum-silicon alloy, and the components of silicon and magnesium are added.
In a preferred embodiment of the present invention, the cooling time in the step S4 of alloy casting is 2-5h, and the casting cooling is used for the solidification of the molten liquid metal.
In a preferred embodiment of the present invention, the quenching time in step S5 is 30-42min, the aging time is 24h, and the quenching and aging can improve the toughness strength of the alloy.
As a preferable technical scheme of the invention, the natural cooling time in the step S7 is 24-36 h, the anticorrosive paint is ceramic micro powder anticorrosive paint, and the ceramic micro powder anticorrosive paint can protect the surface of a product and reduce corrosion and abrasion.
Compared with the prior art, the invention has the beneficial effects that: the toughness of the alloy is improved by adding a small amount of copper powder and chromium into the raw material aluminum material, the stress corrosion cracking sensitivity is reduced, the metallographic structure of the aluminum alloy can be obviously improved by adding rare earth for treatment, crystal grains are refined, and gas and harmful impurities in the aluminum alloy are removed, so that the strength of the aluminum alloy is improved, the processing performance is improved, the preparation method sequentially comprises the steps of material pretreatment, smelting and mixing, tailing fusion, alloy casting, quenching aging, coating treatment, surface layer protection and aluminum-silicon alloy subpackaging, the toughness, the corrosion resistance and the wear resistance of the prepared hypoeutectic aluminum-silicon alloy are greatly improved, the service life of the hypoeutectic aluminum-silicon alloy is prolonged, and the product is more durable.
Drawings
FIG. 1 is a schematic view of the preparation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting, which is prepared from the following components: 76 parts of aluminum material, 3 parts of silicon powder, 3 parts of magnesium powder, 0.5 part of copper powder, 0.5 part of chromium, 2 parts of aluminum-silicon alloy, 1 part of aluminum-magnesium alloy, 6 parts of rare earth, 4 parts of zinc block and 4 parts of anticorrosive paint.
A preparation method of Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting comprises the following steps:
s1, material pretreatment: scrubbing the aluminum material in water to remove dirt adhered to the surface, cleaning the aluminum material by using an aluminum alloy cleaning agent, and drying the cleaned aluminum material;
s2, smelting and mixing: placing the aluminum material treated in the step S1 into a smelting and heating furnace, heating the aluminum material to a molten state, continuously stirring until the aluminum material is completely molten and no lump exists in the aluminum liquid, adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy into the molten aluminum liquid, mixing and stirring the alloy liquid, and continuously heating until all solid state is molten;
s3, fusing tailings: sequentially adding copper powder and chromium into the heated and stirred mixture, stirring and melting, finally adding rare earth and stirring, and continuously heating the final mixed liquid;
s4, alloy casting: casting the finally mixed liquid metal into a casting cavity of an alloy mold, cooling and solidifying to obtain aluminum-silicon alloy, and polishing rough burrs and burrs on the surface of a cast alloy product;
s5, quenching and aging: quenching the alloy formed in the step S4, then performing aging treatment, and standing and naturally cooling after quenching and aging are completed;
s6, plating treatment: firstly, performing dust removal treatment on the hypoeutectic aluminum-silicon alloy fully cooled in the step S4 to remove some dust adhered to the surface, then heating and melting a zinc block, performing zinc plating treatment on the surface of the alloy in a hot galvanizing mode, standing and cooling after primary zinc plating, performing secondary zinc plating, and forming a protective layer on the surface of the alloy after zinc plating and cooling are completed;
s7, surface layer protection: polishing the surface of the alloy after the galvanization in the step S6, coating an anticorrosive paint on the surface of the alloy, drying the anticorrosive paint, coating two layers of anticorrosive paint, and naturally cooling the dried anticorrosive paint;
s8, subpackaging of aluminum-silicon alloy: cutting the large alloy plate or the alloy block into small blocks according to the required size by a cutting machine, and then boxing the alloy product.
The drying time in the material pretreatment of the step S1 is 10min, the sequence of adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy in the smelting and mixing of the step S2 is not sequential, the mixing and stirring time of the alloy liquid in the step S2 is 35-45min, and the cooling time in the alloy casting of the step S4 is 2-5h.
The quenching time in the step S5 is 30-42min, the aging time is 24h, the natural cooling time in the step S7 is 24h-36h, and the anticorrosive paint is ceramic micro powder anticorrosive paint.
Example 2:
the invention provides an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting, which is prepared from the following components: 73 parts of aluminum material, 5 parts of silicon powder, 3 parts of magnesium powder, 2 parts of copper powder, 1 part of chromium, 2 parts of aluminum-silicon alloy, 3 parts of aluminum-magnesium alloy, 5 parts of rare earth, 3 parts of zinc block and 3 parts of anticorrosive paint.
A preparation method of Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting comprises the following steps:
s1, material pretreatment: scrubbing the aluminum material in water to remove dirt adhered to the surface, cleaning the aluminum material by using an aluminum alloy cleaning agent, and drying the cleaned aluminum material;
s2, smelting and mixing: placing the aluminum material treated in the step S1 in a smelting and heating furnace, heating the aluminum material to a molten state, continuously stirring until the aluminum material is completely molten and no lump exists in the aluminum liquid, adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy into the molten aluminum liquid, mixing and stirring the alloy liquid, and continuously heating until all solid state materials are molten;
s3, fusing tailings: sequentially adding copper powder and chromium into the heated and stirred mixture, stirring and melting, finally adding rare earth and stirring, and continuously heating the final mixed liquid;
s4, alloy casting: casting the finally mixed liquid metal into a casting cavity of an alloy mold, cooling and solidifying to obtain aluminum-silicon alloy, and polishing rough burrs and burrs on the surface of a cast alloy product;
s5, quenching and aging: quenching the alloy formed in the step S4, then performing aging treatment, and standing and naturally cooling after quenching and aging are completed;
s6, plating treatment: firstly, performing dust removal treatment on the hypoeutectic aluminum-silicon alloy fully cooled in the step S4 to remove some dust adhered to the surface, then heating and melting a zinc block, performing zinc plating treatment on the surface of the alloy in a hot galvanizing mode, standing and cooling after primary zinc plating, performing secondary zinc plating, and forming a protective layer on the surface of the alloy after zinc plating and cooling are completed;
s7, surface layer protection: polishing the surface of the alloy galvanized in the step S6, coating an anti-corrosion paint on the surface of the alloy, drying the anti-corrosion paint, coating two layers of anti-corrosion paints, and naturally cooling after drying;
s8, subpackaging of aluminum-silicon alloy: cutting the large alloy plate or the alloy block into small blocks according to the required size by a cutting machine, and then boxing the alloy product.
The drying time in the material pretreatment of the step S1 is 10min, the sequence of adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy in the smelting and mixing of the step S2 is not sequential, the mixing and stirring time of the alloy liquid in the step S2 is 35-45min, and the cooling time in the alloy casting of the step S4 is 2-5h.
The quenching time in the step S5 is 30-42min, the aging time is 24h, the natural cooling time in the step S7 is 24h-36h, and the anticorrosive paint is ceramic micro-powder anticorrosive paint.
Example 3:
the invention provides an Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting, which is prepared from the following components: according to the weight portion, 79 portions of aluminum material, 3 portions of silicon powder, 3 portions of magnesium powder, 0.5 portion of copper powder, 0.5 portion of chromium, 2 portions of aluminum-silicon alloy, 1 portion of aluminum-magnesium alloy, 5 portions of rare earth, 3 portions of zinc block and 3 portions of anticorrosive paint.
A preparation method of Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting comprises the following steps:
s1, material pretreatment: scrubbing the aluminum material in water to remove dirt adhered to the surface, cleaning the aluminum material by using an aluminum alloy cleaning agent, and drying the cleaned aluminum material;
s2, smelting and mixing: placing the aluminum material treated in the step S1 into a smelting and heating furnace, heating the aluminum material to a molten state, continuously stirring until the aluminum material is completely molten and no lump exists in the aluminum liquid, adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy into the molten aluminum liquid, mixing and stirring the alloy liquid, and continuously heating until all solid state is molten;
s3, fusing tailings: sequentially adding copper powder and chromium into the heated and stirred mixture, stirring and melting, finally adding rare earth and stirring, and continuously heating the final mixed liquid;
s4, alloy casting: casting the finally mixed liquid metal into a casting cavity of an alloy mold, cooling and solidifying the finally mixed liquid metal to obtain an aluminum-silicon alloy, and polishing rough burrs and burrs on the surface of a cast alloy product;
s5, quenching and aging: quenching the alloy formed in the step S4, then performing aging treatment, and standing for natural cooling after quenching and aging are completed;
s6, plating treatment: firstly, performing dust removal treatment on the hypoeutectic aluminum-silicon alloy fully cooled in the step S4 to remove some dust adhered to the surface, then heating and melting a zinc block, performing zinc plating treatment on the surface of the alloy in a hot galvanizing mode, standing and cooling after primary zinc plating, performing secondary zinc plating, and forming a protective layer on the surface of the alloy after zinc plating and cooling are completed;
s7, surface layer protection: polishing the surface of the alloy galvanized in the step S6, coating an anti-corrosion paint on the surface of the alloy, drying the anti-corrosion paint, coating two layers of anti-corrosion paints, and naturally cooling after drying;
s8, subpackaging of aluminum-silicon alloy: cutting the large alloy plate or the alloy block into small blocks according to the required size by a cutting machine, and then boxing the alloy product.
The drying time in the material pretreatment in the step S1 is 10min, the sequence of adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy in the smelting and mixing in the step S2 is not sequential, the mixing and stirring time of the alloy liquid in the step S2 is 35-45min, and the cooling time in the alloy casting in the step S4 is 2-5h.
The quenching time in the step S5 is 30-42min, the aging time is 24h, the natural cooling time in the step S7 is 24h-36h, and the anticorrosive paint is ceramic micro-powder anticorrosive paint.
According to the invention, a small amount of copper powder and chromium are added into the raw material aluminum material to improve the toughness of the alloy, reduce the stress corrosion cracking sensitivity, rare earth is added for treatment to obviously improve the metallographic structure of the aluminum alloy, refine crystal grains and remove gas and harmful impurities in the aluminum alloy, so that the strength of the aluminum alloy and improve the processing performance are improved, and the preparation method sequentially comprises the steps of material pretreatment, smelting and mixing, tailing fusion, alloy casting, quenching aging, coating treatment, surface protection and aluminum-silicon alloy split charging, so that the toughness, corrosion resistance and wear resistance of the prepared hypoeutectic aluminum-silicon alloy are greatly improved, the service life of the hypoeutectic aluminum-silicon alloy is prolonged, and the product is more durable.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. An Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting is characterized in that: the preparation method comprises the following steps: 70-80 parts of aluminum material, 3-5 parts of silicon powder, 3-4 parts of magnesium powder, 0.5-2 parts of copper powder, 0.5-1 part of chromium, 2-3 parts of aluminum-silicon alloy, 1-3 parts of aluminum-magnesium alloy, 5-6 parts of rare earth, 3-4 parts of zinc block and 3-4 parts of anticorrosive paint.
2. An Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting according to claim 1, characterized in that: the preparation method comprises the following steps: 76 parts of aluminum material, 3 parts of silicon powder, 3 parts of magnesium powder, 0.5 part of copper powder, 0.5 part of chromium, 2 parts of aluminum-silicon alloy, 1 part of aluminum-magnesium alloy, 6 parts of rare earth, 4 parts of zinc block and 4 parts of anticorrosive paint.
3. An Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting according to claim 1, characterized in that: the preparation method comprises the following steps: 73 parts of aluminum material, 5 parts of silicon powder, 3 parts of magnesium powder, 2 parts of copper powder, 1 part of chromium, 2 parts of aluminum-silicon alloy, 3 parts of aluminum-magnesium alloy, 5 parts of rare earth, 3 parts of zinc block and 3 parts of anticorrosive paint.
4. An Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting according to claim 1, characterized in that: the composition is prepared from the following components: according to the weight portion, 79 portions of aluminum material, 3 portions of silicon powder, 3 portions of magnesium powder, 0.5 portion of copper powder, 0.5 portion of chromium, 2 portions of aluminum-silicon alloy, 1 portion of aluminum-magnesium alloy, 5 portions of rare earth, 3 portions of zinc block and 3 portions of anticorrosive paint.
5. A method for preparing an Al-Si-Mg series hypoeutectic Al-Si alloy for flexible die casting according to any one of claims 1 to 4, characterized by comprising the steps of:
s1, material pretreatment: scrubbing the aluminum material in water to remove dirt adhered to the surface, cleaning the aluminum material by using an aluminum alloy cleaning agent, and drying the cleaned aluminum material;
s2, smelting and mixing: placing the aluminum material treated in the step S1 in a smelting and heating furnace, heating the aluminum material to a molten state, continuously stirring until the aluminum material is completely molten and no lump exists in the aluminum liquid, adding silicon powder, magnesium powder, aluminum-silicon alloy and aluminum-magnesium alloy into the molten aluminum liquid, mixing and stirring the alloy liquid, and continuously heating until all solid state materials are molten;
s3, fusing tailings: sequentially adding copper powder and chromium into the heated and stirred mixture, stirring and melting, finally adding rare earth and stirring, and continuously heating the final mixed liquid;
s4, alloy casting: casting the finally mixed liquid metal into a casting cavity of an alloy mold, cooling and solidifying the finally mixed liquid metal to obtain an aluminum-silicon alloy, and polishing rough burrs and burrs on the surface of a cast alloy product;
s5, quenching and aging: quenching the alloy formed in the step S4, then performing aging treatment, and standing for natural cooling after quenching and aging are completed;
s6, plating treatment: firstly, performing dust removal treatment on the fully cooled hypoeutectic aluminum-silicon alloy in the step S4 to remove some dust adhered to the surface, then heating and melting a zinc block, performing zinc plating treatment on the surface of the alloy in a hot galvanizing mode, performing secondary zinc plating after standing and cooling after primary zinc plating, and forming a protective layer on the surface of the alloy after zinc plating and cooling are completed;
s7, surface layer protection: polishing the surface of the alloy after the galvanization in the step S6, coating an anticorrosive paint on the surface of the alloy, drying the anticorrosive paint, coating two layers of anticorrosive paint, and naturally cooling the dried anticorrosive paint;
s8, subpackaging aluminum-silicon alloy: cutting large alloy plates or alloy blocks into small blocks according to the required size by a cutting machine, and then boxing the alloy products.
6. The method for preparing the Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for the flexible die casting according to the claim 5, characterized in that: the drying time in the material pretreatment of the step S1 is 10min.
7. The method for preparing the Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for the flexible die casting according to the claim 5, characterized in that: the silicon powder, the magnesium powder, the aluminum-silicon alloy and the aluminum-magnesium alloy are added in the step S2 in a smelting and mixing sequence, and the time for mixing and stirring the alloy liquid in the step S2 is 35-45min.
8. The method for preparing the Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for the flexible die casting according to the claim 5, characterized in that: and the cooling time in the step S4 of alloy casting is 2-5h.
9. The method for preparing the Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for the flexible die casting according to the claim 5, characterized in that: the quenching time in the step S5 is 30-42min, and the aging time is 24h.
10. The method for preparing the Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for the flexible die casting according to the claim 5, characterized in that: the natural cooling time in the step S7 is 24-36 h, and the anticorrosive paint is ceramic micro powder anticorrosive paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256181.5A CN115572863A (en) | 2022-10-13 | 2022-10-13 | Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256181.5A CN115572863A (en) | 2022-10-13 | 2022-10-13 | Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115572863A true CN115572863A (en) | 2023-01-06 |
Family
ID=84584880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211256181.5A Pending CN115572863A (en) | 2022-10-13 | 2022-10-13 | Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115572863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116516264A (en) * | 2023-05-10 | 2023-08-01 | 山东景晨金属制品有限公司 | Rare earth weather-resistant and corrosion-resistant steel color-coated plate and manufacturing process thereof |
-
2022
- 2022-10-13 CN CN202211256181.5A patent/CN115572863A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116516264A (en) * | 2023-05-10 | 2023-08-01 | 山东景晨金属制品有限公司 | Rare earth weather-resistant and corrosion-resistant steel color-coated plate and manufacturing process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104630578B (en) | High plasticity alloy cast aluminum and its gravitational casting preparation method | |
| CN110551924A (en) | Aluminum alloy and preparation method and application thereof | |
| CN106399781B (en) | A kind of high-strength corrosion-resisting rare earth aluminum alloy material and preparation method | |
| CN108330354A (en) | A kind of electronic equipment high-strength aluminum alloy and its preparation and pressing method | |
| CN109957686B (en) | A kind of aluminum-silicon alloy for cylinder liner and preparation process | |
| CN104357714B (en) | A kind of aluminum silicon alloy and preparation method thereof | |
| CN108203780A (en) | A kind of liquid forging high-strength abrasion-proof aluminum alloy and preparation method thereof | |
| CN114351017B (en) | Casting method and application of high-toughness high-heat-conductivity aluminum alloy ingot | |
| CN102443725B (en) | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy | |
| CN106480343A (en) | A kind of high intensity, new A l Mg Si alloy material of seawater corrosion resistance and preparation method thereof | |
| CN103205587A (en) | Production technology of high-strength rare earth aluminum alloy applied to automotive pedal | |
| CN110983120A (en) | 300 MPa-grade high-strength plastic non-heat-treatment self-strengthening die-casting aluminum alloy and manufacturing method thereof | |
| CN112695230A (en) | High-elongation heat-resistant aluminum alloy vehicle part and preparation method thereof | |
| CN111112875A (en) | Containing TiB2Granular aluminum alloy welding wire and preparation method thereof | |
| CN105821249A (en) | Zinc alloy ingot and preparing method thereof | |
| CN104911414B (en) | A kind of aluminum alloy materials and preparation method for car light heat dissipation base | |
| CN115572863A (en) | Al-Si-Mg series hypoeutectic aluminum-silicon alloy suitable for flexible die casting and preparation method thereof | |
| CN110227892A (en) | A kind of 5 line aluminium alloy welding wire preparation methods containing rare earth element nd and Ce | |
| CN102304651B (en) | Casting aluminum-silicon alloy and strengthening method thereof | |
| CN102965556B (en) | Multi-element Mg-Zn-Al based magnesium alloy and preparation method thereof | |
| CN107779660A (en) | A kind of high-strength high Vulcan metal and preparation method thereof | |
| CN105401063B (en) | A kind of the ductile cast iron as-cast cylinder jacket and its production technology of centrifugal casting production | |
| CN111500904A (en) | Medium-strength superhard aluminum alloy and manufacturing process thereof | |
| JP2017031471A (en) | Al-Si-Mg-BASED ALUMINUM ALLOY SHEET, MANUFACTURING METHOD OF THE ALLOY SHEET AND AUTOMOBILE COMPONENT USING ALLOY SHEET | |
| WO2023004850A1 (en) | Lightweight high-silicon aluminum alloy die casting member and preparation method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |