CN111074103A - Die-casting aluminum alloy and refining process thereof - Google Patents
Die-casting aluminum alloy and refining process thereof Download PDFInfo
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- CN111074103A CN111074103A CN201911188625.4A CN201911188625A CN111074103A CN 111074103 A CN111074103 A CN 111074103A CN 201911188625 A CN201911188625 A CN 201911188625A CN 111074103 A CN111074103 A CN 111074103A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 57
- 238000004512 die casting Methods 0.000 title claims abstract description 36
- 238000007670 refining Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 45
- 230000006698 induction Effects 0.000 claims abstract description 27
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000012629 purifying agent Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 230000008646 thermal stress Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- 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
- C22C1/06—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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a smelting process of die-casting aluminum alloy, which comprises the following steps of S1, weighing raw materials according to the weight parts, and polishing the surface of the raw materials; s2, putting the polished raw materials into ultrasonic equipment to be cleaned with absolute ethyl alcohol, cleaning with warm water and drying; s3, adding the raw materials into a medium-frequency induction furnace, heating to more than 840 ℃, stirring, and completely melting the raw materials into an aluminum alloy melt and refining; s4, vacuumizing the medium-frequency induction furnace to 0.1-0.2MPa, filling argon, raising the vacuum in the medium-frequency induction furnace to below 0.05MPa, heating the aluminum alloy melt to 740-; s5, adjusting components: and S6, pressing the aluminum alloy melt obtained in the step (5) into a die under the condition of high vacuum, wherein the casting pressure is 70-90MPa until the mold filling and die casting are finished. The die-casting aluminum alloy prepared by the invention has good creep resistance, oxidation resistance and corrosion resistance, improves the obdurability, reduces the internal stress and has strong comprehensive performance.
Description
Technical Field
The invention relates to the technical field of die casting, in particular to a die-casting aluminum alloy and a refining process thereof.
Background
The die casting technology is characterized in that molten metal is pressed into a precise metal die cavity at high speed by utilizing high pressure, and the molten metal is cooled and solidified under the action of pressure to form a casting. The die casting production efficiency is high, and die castings with complex shapes, accurate sizes, clear outlines, high surface quality, high strength and high hardness can be die cast, so the die casting die is wide in application and fast in development. The die-casting alloy is widely applied to the prior art. The die-casting aluminum alloy has good use performance and process performance, so the die-casting of the aluminum alloy is developed rapidly, is widely applied in various industrial departments, has the use amount far higher than that of other non-ferrous alloys, and plays an extremely important role in die-casting production;
however, the strength and the elongation of the existing die-casting aluminum alloy are low, and burning loss of alloy components is easy to occur in the die-casting process, so that the quality of a die-casting piece cannot be well controlled, and a certain safety risk is caused particularly in the use occasions of high-safety fields such as automobiles, and in view of the above, the scheme is generated by intensive research aiming at the problems.
Disclosure of Invention
The invention aims to provide a die-casting aluminum alloy and a refining process thereof, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a die-cast aluminum alloy characterized in that: the feed comprises the following raw materials in parts by weight: 1-3 parts of Si, 0.2-0.6 part of Zr, 2-8 parts of Fe, 3-5 parts of Ca, 8-13 parts of Mg, 5-13 parts of Ti, 4-9 parts of Zn, 10-16 parts of Ce and Al: 1050 and 1200 parts.
Preferably, the raw materials consist of the following components in parts by weight: 2 parts of Si, 0.5 part of Zr, 6 parts of Fe, 4 parts of Ca, 10 parts of Mg, 11 parts of Ti, 7 parts of Zn, 13 parts of Ce and Al: 1150 parts.
Preferably, the raw materials consist of the following components in parts by weight: 3 parts of Si, 0.4 part of Zr, 5 parts of Fe, 3 parts of Ca, 9 parts of Mg, 8 parts of Ti, 8 parts of Zn, 15 parts of Ce and Al: 1180 parts.
A smelting process of die-casting aluminum alloy comprises the following steps:
s1, weighing the raw materials according to the parts by weight, and polishing the surfaces of the raw materials;
s2, putting the polished raw materials into ultrasonic equipment to be cleaned with absolute ethyl alcohol, cleaning with warm water and drying;
s3, adding the raw materials into a medium-frequency induction furnace, heating to more than 840 ℃, stirring, and completely melting the raw materials into an aluminum alloy melt and refining;
s4, vacuumizing the medium-frequency induction furnace to 0.1-0.2MPa, filling argon, raising the vacuum in the medium-frequency induction furnace to below 0.05MPa, heating the aluminum alloy melt to 740-;
s5, adjusting components:
1) sampling the aluminum alloy melt in the medium-frequency induction furnace, quickly analyzing, and analyzing whether chemical components meet standard requirements;
2) when the quick analysis result does not accord with the component requirement of the aluminum alloy melt, the material supplementing or the dilution is adjusted;
3) adding corresponding purifying agent according to the components of the molten aluminum alloy, and degassing at a proper temperature;
and S6, pressing the aluminum alloy melt obtained in the step (5) into a die under the condition of high vacuum, wherein the casting pressure is 70-90MPa until the mold filling and die casting are finished.
Preferably, in S2, after the temperature in the ultrasonic equipment is raised to 65-70 ℃, the cleaning treatment is carried out for 30-40 min.
Preferably, in S3, if the raw material is not completely melted into the molten aluminum alloy, the dross is taken out and a refining agent is added to perform secondary refining.
Preferably, in S3, the temperature rising speed of the medium frequency induction furnace is controlled to rise from 50 to 70 degrees per minute until more than 840 degrees is reached.
Preferably, in S4, the argon gas has a purity of 99% or more.
Preferably, in S5, the temperature in the medium frequency induction furnace during sampling should not be lower than the melting temperature middle limit.
The invention provides a die-casting aluminum alloy and a refining process thereof, and the die-casting aluminum alloy has the beneficial effects that:
the die-casting aluminum alloy prepared by the invention has good creep resistance, oxidation resistance and corrosion resistance, reduces thermal stress caused by solidification shrinkage, reduces thermal cracking, is beneficial to feeding, improves the internal surface quality of a casting, ensures strength while improving plasticity, reduces the content of harmful elements in high vacuum degree, improves the purity of the die-casting aluminum alloy, improves the obdurability, reduces internal stress, has strong comprehensive performance, and greatly improves the process quality and finished products of the die-casting.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 a technical scheme that: a die-casting aluminum alloy and a refining process thereof comprise the following steps of S1, according to the weight ratio of Si 2 parts, Zr 0.5 parts, Fe 6 parts, Ca4 parts, Mg 10 parts, Ti 11 parts, Zn 7 parts, Ce 13 parts and Al: 1150, weighing raw materials, and polishing the surfaces of the raw materials; s2, putting the polished raw materials into ultrasonic equipment, cleaning the raw materials with absolute ethyl alcohol, cleaning the raw materials with warm water, drying the raw materials, heating the raw materials to 65-70 ℃ in the ultrasonic equipment, and cleaning the raw materials for 30-40 min; s3, adding the raw materials into a medium frequency induction furnace, heating to more than 840 ℃ and stirring to completely melt the raw materials into molten aluminum alloy and refining, controlling the temperature rise speed of the medium frequency induction furnace to rise by 50-70 ℃ per minute until the temperature reaches more than 840 ℃, if the raw materials are not completely melted into molten aluminum alloy, fishing out dross, and adding a refining agent to carry out secondary refining; s4, vacuumizing the medium-frequency induction furnace to 0.1-0.2MPa, filling argon gas, raising the vacuum in the medium-frequency induction furnace to below 0.05MPa, heating the aluminum alloy melt to 740-780 ℃, and preserving heat for 20-30min, wherein the purity of the argon gas is more than 99%; s5, adjusting components: 1) sampling the aluminum alloy melt in the medium-frequency induction furnace, quickly analyzing whether chemical components meet standard requirements or not, and ensuring that the temperature in the medium-frequency induction furnace during sampling is not lower than the melting temperature middle limit; 2) when the quick analysis result does not accord with the component requirement of the aluminum alloy melt, the material supplementing or the dilution is adjusted; 3) adding corresponding purifying agent according to the components of the molten aluminum alloy, and degassing at a proper temperature; and S6, pressing the aluminum alloy melt obtained in the step (5) into a die under the condition of high vacuum, wherein the casting pressure is 70-90MPa until the mold filling and die casting are finished.
Example 2:
the invention provides a technical scheme that: a die-casting aluminum alloy and a refining process thereof comprise the following steps of S1, according to the weight ratio of Si 3 parts, Zr 0.4 parts, Fe 5 parts, Ca 3 parts, Mg 9 parts, Ti 8 parts, Zn 8 parts, Ce 15 parts and Al: 1180 parts of raw materials are weighed, and the surfaces of the raw materials are polished; s2, putting the polished raw materials into ultrasonic equipment, cleaning the raw materials with absolute ethyl alcohol, cleaning the raw materials with warm water, drying the raw materials, heating the raw materials to 65-70 ℃ in the ultrasonic equipment, and cleaning the raw materials for 30-40 min; s3, adding the raw materials into a medium frequency induction furnace, heating to more than 840 ℃ and stirring to completely melt the raw materials into molten aluminum alloy and refining, controlling the temperature rise speed of the medium frequency induction furnace to rise by 50-70 ℃ per minute until the temperature reaches more than 840 ℃, if the raw materials are not completely melted into molten aluminum alloy, fishing out dross, and adding a refining agent to carry out secondary refining; s4, vacuumizing the medium-frequency induction furnace to 0.1-0.2MPa, filling argon gas, raising the vacuum in the medium-frequency induction furnace to below 0.05MPa, heating the aluminum alloy melt to 740-780 ℃, and preserving heat for 20-30min, wherein the purity of the argon gas is more than 99%; s5, adjusting components: 1) sampling the aluminum alloy melt in the medium-frequency induction furnace, quickly analyzing whether chemical components meet standard requirements or not, and ensuring that the temperature in the medium-frequency induction furnace during sampling is not lower than the melting temperature middle limit; 2) when the quick analysis result does not accord with the component requirement of the aluminum alloy melt, the material supplementing or the dilution is adjusted; 3) adding corresponding purifying agent according to the components of the molten aluminum alloy, and degassing at a proper temperature; and S6, pressing the aluminum alloy melt obtained in the step (5) into a die under the condition of high vacuum, wherein the casting pressure is 70-90MPa until the mold filling and die casting are finished.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A die-cast aluminum alloy characterized in that: the feed comprises the following raw materials in parts by weight: 1-3 parts of Si, 0.2-0.6 part of Zr, 2-8 parts of Fe, 3-5 parts of Ca, 8-13 parts of Mg, 5-13 parts of Ti, 4-9 parts of Zn, 10-16 parts of Ce and Al: 1050 and 1200 parts.
2. The die-cast aluminum alloy according to claim 1, wherein: the raw materials comprise the following components in parts by weight: 2 parts of Si, 0.5 part of Zr, 6 parts of Fe, 4 parts of Ca, 10 parts of Mg, 11 parts of Ti, 7 parts of Zn, 13 parts of Ce and Al: 1150 parts.
3. The die-cast aluminum alloy according to claim 1, wherein: the raw materials comprise the following components in parts by weight: 3 parts of Si, 0.4 part of Zr, 5 parts of Fe, 3 parts of Ca, 9 parts of Mg, 8 parts of Ti, 8 parts of Zn, 15 parts of Ce and Al: 1180 parts.
4. A process for producing a die-cast aluminum alloy as recited in any one of claims 1 to 3, wherein: the method comprises the following steps:
s1, weighing the raw materials according to the parts by weight, and polishing the surfaces of the raw materials;
s2, putting the polished raw materials into ultrasonic equipment to be cleaned with absolute ethyl alcohol, cleaning with warm water and drying;
s3, adding the raw materials into a medium-frequency induction furnace, heating to more than 840 ℃, stirring, and completely melting the raw materials into an aluminum alloy melt and refining;
s4, vacuumizing the medium-frequency induction furnace to 0.1-0.2MPa, filling argon, raising the vacuum in the medium-frequency induction furnace to below 0.05MPa, heating the aluminum alloy melt to 740-;
s5, adjusting components:
1) sampling the aluminum alloy melt in the medium-frequency induction furnace, quickly analyzing, and analyzing whether chemical components meet standard requirements;
2) when the quick analysis result does not accord with the component requirement of the aluminum alloy melt, the material supplementing or the dilution is adjusted;
3) adding corresponding purifying agent according to the components of the molten aluminum alloy, and degassing at a proper temperature;
and S6, pressing the aluminum alloy melt obtained in the step (5) into a die under the condition of high vacuum, wherein the casting pressure is 70-90MPa until the mold filling and die casting are finished.
5. A die-casting aluminum alloy smelting process according to claim 4, characterized by: and S2, heating the inside of the ultrasonic equipment to 65-70 ℃, and then cleaning for 30-40 min.
6. A die-casting aluminum alloy smelting process according to claim 4, characterized by: in S3, if the raw material is not completely melted into the molten aluminum alloy, the dross is taken out and a refining agent is added to perform secondary refining.
7. A die-casting aluminum alloy smelting process according to claim 4, characterized by: in S3, the temperature rising speed of the medium frequency induction furnace is controlled to rise from 50 to 70 degrees per minute until the temperature reaches more than 840 degrees.
8. A die-casting aluminum alloy smelting process according to claim 4, characterized by: in S4, the argon gas has a purity of 99% or more.
9. A die-casting aluminum alloy smelting process according to claim 4, characterized by: in S5, the temperature in the medium-frequency induction furnace during sampling is not lower than the melting temperature middle limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188625.4A CN111074103A (en) | 2019-11-28 | 2019-11-28 | Die-casting aluminum alloy and refining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188625.4A CN111074103A (en) | 2019-11-28 | 2019-11-28 | Die-casting aluminum alloy and refining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111074103A true CN111074103A (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911188625.4A Pending CN111074103A (en) | 2019-11-28 | 2019-11-28 | Die-casting aluminum alloy and refining process thereof |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378841A (en) * | 2020-03-20 | 2020-07-07 | 佛山市南海创利有色金属制品有限公司 | Die-casting aluminum alloy crushed material recovery process |
| CN111575547A (en) * | 2020-06-13 | 2020-08-25 | 南通华众液压机械有限公司 | Production process of a cable clamp |
| CN111593217A (en) * | 2020-05-19 | 2020-08-28 | 中国兵器科学研究院宁波分院 | Vacuum dynamic refining device and method for aluminum alloy smelting |
| CN112192437A (en) * | 2020-09-22 | 2021-01-08 | 深圳长城开发精密技术有限公司 | Double-sided precision grinding stone for hard disk substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB644776A (en) * | 1947-02-18 | 1950-10-18 | Tennyson Fraser Bradbury | An aluminium base alloy |
| CN105256185A (en) * | 2015-11-11 | 2016-01-20 | 天津爱田汽车部件有限公司 | Cast aluminum alloy high in thermal conductivity |
| CN105986152A (en) * | 2015-03-17 | 2016-10-05 | 麦格纳国际公司 | Low cost high ductility cast aluminum alloy |
-
2019
- 2019-11-28 CN CN201911188625.4A patent/CN111074103A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB644776A (en) * | 1947-02-18 | 1950-10-18 | Tennyson Fraser Bradbury | An aluminium base alloy |
| CN105986152A (en) * | 2015-03-17 | 2016-10-05 | 麦格纳国际公司 | Low cost high ductility cast aluminum alloy |
| CN105256185A (en) * | 2015-11-11 | 2016-01-20 | 天津爱田汽车部件有限公司 | Cast aluminum alloy high in thermal conductivity |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378841A (en) * | 2020-03-20 | 2020-07-07 | 佛山市南海创利有色金属制品有限公司 | Die-casting aluminum alloy crushed material recovery process |
| CN111593217A (en) * | 2020-05-19 | 2020-08-28 | 中国兵器科学研究院宁波分院 | Vacuum dynamic refining device and method for aluminum alloy smelting |
| CN111593217B (en) * | 2020-05-19 | 2024-05-14 | 中国兵器科学研究院宁波分院 | Aluminum alloy smelting vacuum dynamic refining device and vacuum dynamic refining method |
| CN111575547A (en) * | 2020-06-13 | 2020-08-25 | 南通华众液压机械有限公司 | Production process of a cable clamp |
| CN112192437A (en) * | 2020-09-22 | 2021-01-08 | 深圳长城开发精密技术有限公司 | Double-sided precision grinding stone for hard disk substrate |
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Application publication date: 20200428 |
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