CN112481526A - Production method of aluminum-silicon alloy rod - Google Patents
Production method of aluminum-silicon alloy rod Download PDFInfo
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- CN112481526A CN112481526A CN201910864369.XA CN201910864369A CN112481526A CN 112481526 A CN112481526 A CN 112481526A CN 201910864369 A CN201910864369 A CN 201910864369A CN 112481526 A CN112481526 A CN 112481526A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/005—Removing slag from a molten metal surface
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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Abstract
The invention belongs to the technical field of intermediate alloy manufacturing, and discloses a production method of an aluminum-silicon alloy rod, which comprises the following steps: s1, batching and charging, S2, smelting, S3, casting, S4 and sawing. Selecting regenerated ingots, waste materials and industrial silicon produced by smelting aluminum ash as raw materials, wherein the silicon content is controlled according to 10-12.5%; the charging sequence is as follows: laying the bottom by using the regenerated ingot and the waste material, processing the industrial silicon, igniting and heating until the solid material is molten and the industrial silicon is completely red, and stirring. The invention has the advantages that: 1. the existing circular ingot casting equipment and the existing circular ingot casting system can be fully utilized, and the equipment investment is not required to be increased. 2. Simple process and high production efficiency, and compared with the traditional aluminum-silicon alloy production method, the production efficiency is improved by nearly 27 to 30 times. 3. Can make full use of the regenerated aluminum ingot and the sectional material waste materials, and saves energy. 4. The aluminum-silicon alloy rod produced by the invention has stable components and uniform structure, and the quality of products such as round cast ingots, cast-rolled coils and the like cast by the aluminum-silicon alloy rod is obviously improved.
Description
Technical Field
The invention belongs to the technical field of manufacturing of intermediate alloys, and particularly discloses a production method of an aluminum-silicon alloy rod.
Background
When aluminum products (such as aluminum ingots and aluminum coils) are produced, aluminum-silicon alloy is required to be adopted as intermediate alloy in the smelting processes of casting and rolling to realize ingredient addition. In the related technology, the smelting and manufacturing method of the aluminum-silicon intermediate alloy comprises the following steps: the production is carried out by adopting a small-sized furnace smelting and manual casting method.
The disadvantages of the related art are that: the production efficiency is low by adopting a small furnace for smelting, and the content of alloy silicon is not uniform due to insufficient melting of silicon blocks; the smelting temperature is high, and the labor intensity of workers is high; the aluminum-silicon alloy has a coarse primary crystal silicon phase, and products such as round cast ingots, cast-rolled coils and the like produced by the aluminum-silicon intermediate alloy have quality defects such as pull marks, roughness, pinholes, white strips and the like easily generated on the surfaces of downstream customer products such as aluminum profiles, aluminum foils and the like.
Therefore, there is a need to provide a new method for producing aluminum-silicon alloy rods to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing the production method of the aluminum-silicon alloy rod, which has the advantages of simple process, uniform silicon content of the aluminum-silicon alloy, high production efficiency and reduced labor intensity of workers.
The invention provides a production method of an aluminum-silicon alloy rod, which comprises the following steps:
s1, batching and charging, wherein the regenerated ingot, waste material and industrial silicon produced by smelting aluminum ash are selected as raw materials, and the silicon content is controlled according to 10-12.5%; the charging sequence is as follows: paving the bottom with regenerated ingots and waste materials, processing industrial silicon, igniting and heating until solid materials are molten and the industrial silicon is completely red, and stirring;
s2, smelting
S21, stirring, flattening the materials in the smelting furnace, and then stirring by using an electromagnetic stirrer and a forklift;
s22, slagging off for the first time, wherein when the temperature of the aluminum melt reaches 720 ℃, a forklift uses a special slag rake to scrape off the dross on the surface of the aluminum liquid in the furnace, so as to ensure that no dross is on the surface of the aluminum liquid;
s23, refining, namely refining by using a powder refining agent;
s24, sampling, namely sampling by using a sampling spoon, and carrying out the next operation when the detected components are within the chemical component control standard range;
the chemical composition control standard is as follows:
Mg≤0.30％，
Fe≤0.30％，
Si：10.0-12.5％，
Cu≤0.03％，
Mn≤0.05％，
Cr≤0.01％，
Zn≤0.03％，
Ti≤0.10％，
the above percentages are mass percentages;
s25, after sampling, slagging off for the second time to completely remove dross on the liquid level out of the furnace, and standing the melt for casting;
s3, casting, wherein the casting temperature in the furnace is 750-755 ℃, and the alloy rod is formed by casting;
and S4, sawing the aluminum-silicon alloy rod into two or more sections to complete the production of the aluminum-silicon alloy rod.
Preferably, in step S1, the commercial silicon yield is 95%.
Preferably, in step S21, the stirring process is: after materials in the smelting furnace are leveled, the materials are stirred for 1 time by using an electromagnetic stirrer, and stirred for two times by using a forklift according to an N shape.
Preferably, in step S24, the sampling spoon is rinsed in the melt for more than 4 times after being preheated for 1-3 minutes, and samples are taken at the positions 1.25-1.35 meters away from the furnace door sills and at the depth of 1/2 of aluminum liquid at the center of the two furnace doors, and 2 samples are taken in each furnace.
Preferably, in step S22, the temperature is not less than 720 ℃ during the first slag skimming.
Preferably, in step S23, the amount of the refining agent is 1.5kg per ton of aluminum; the refining time is 15 +/-3 min, and the refining temperature is 730-; and starting electromagnetic stirring in the refining process.
Preferably, in step S4, the aluminum-silicon alloy rod is sawed into 2 to 3 segments by using an aluminum alloy circular ingot circular saw.
Preferably, in step S3, before casting, a runner baking step is further included, in which the runner and the platform are baked before casting, and the runner temperature is controlled to be 50-100 ℃.
Preferably, in step S3, the deep well casting is performed using a 25 ton platform of 120mm diameter.
Preferably, 12 × 10-120 alloy rods are cast each time, the casting speed is 140-; in the casting process, on-line degassing and filtering are used, and single-stage filtering is performed by adopting a 40ppi ceramic filter plate.
The invention has the advantages that:
1. the existing circular ingot casting equipment and the existing circular ingot casting system can be fully utilized, and the equipment investment is not required to be increased.
2. Simple process and high production efficiency, and compared with the traditional aluminum-silicon alloy production method, the production efficiency is improved by nearly 27 to 30 times.
3. Can make full use of the regenerated aluminum ingot and the sectional material waste materials, and saves energy.
4. The aluminum-silicon alloy rod produced by the invention has stable components and uniform structure, and the quality of products such as round cast ingots, cast-rolled coils and the like cast by the aluminum-silicon alloy rod is obviously improved.
Drawings
FIG. 1 is a crystal phase microstructure diagram of a product manufactured by applying a method for manufacturing an aluminum-silicon alloy rod according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
A production method of an aluminum-silicon alloy rod comprises the following steps:
s1, batching and charging, wherein the regenerated ingot, waste material and industrial silicon produced by smelting aluminum ash are selected as raw materials, and the silicon content is controlled according to 10-12.5%; the charging sequence is as follows: paving the bottom with regenerated ingots and waste materials, processing industrial silicon, igniting and heating until solid materials are molten and the industrial silicon is completely red, and stirring; the actual yield of the industrial silicon is calculated by 95 percent.
S2, smelting
S21, stirring: after materials in the smelting furnace are leveled, the materials are stirred for 1 time by using an electromagnetic stirrer, and stirred for two times by using a forklift according to an N shape.
S22, slagging off for the first time, wherein when the temperature of the aluminum melt reaches 720 ℃, a forklift uses a special slag rake to scrape off the dross on the surface of the aluminum liquid in the furnace, so as to ensure that no dross is on the surface of the aluminum liquid; the temperature is more than or equal to 720 ℃ when the slag is removed for the first time.
S23, refining, namely refining by using a powder refining agent; in step S23, the dosage of the refining agent is 1.5kg per ton of aluminum; the refining time is 15 +/-3 min, and the refining temperature is 730-; and starting electromagnetic stirring in the refining process.
And S24, sampling, namely, sampling by using a sampling spoon, preheating the sampling spoon for 1-3 minutes, then rinsing the sampling spoon in the melt for more than 4 times, sampling at the position 1.25-1.35 meters away from the furnace door ridge and at the depth of 1/2 of aluminum liquid at the center of two furnace doors, and sampling 2 samples in each furnace. Carrying out the next operation when the detected components are within the chemical component control standard range; the chemical composition control standards are listed in table 1 below.
TABLE 1
The above percentages are mass percentages.
And S25, after sampling, carrying out secondary slagging-off to completely remove scum on the liquid level outside the furnace, and standing the melt for casting.
S3, casting, namely,
before casting, baking the runner and the platform before casting, and controlling the temperature of the runner to be 50-100 ℃. The pouring temperature in the furnace is 750-755 ℃, and the alloy bar is formed by casting.
Casting the deep well by adopting a 25-ton phi 120mm platform; casting 12 multiplied by 10-120 alloy rods each time at the casting speed of 140-; in the casting process, on-line degassing and filtering are used, and single-stage filtering is performed by adopting a 40ppi ceramic filter plate.
And S4, sawing, namely sawing the aluminum-silicon alloy rod into 2-3 sections by using an aluminum alloy circular ingot disc saw to complete the production of the aluminum-silicon alloy rod. Fig. 1 shows a crystalline phase microstructure of a product produced by applying a method for producing an aluminum-silicon alloy rod according to the present invention.
In the invention, the existing casting equipment is utilized, the regenerated ingot, waste material or aluminum ingot produced by smelting aluminum ash is used for proportioning, and after smelting, the aluminum-silicon alloy rods with the diameter of 120mm are cast by adopting a 25-ton deep well with a platform with the diameter of 120mm to cast 120 aluminum-silicon alloy rods with the diameter of 6.5-6.8m in one step.
1. The invention improves the traditional production method of the aluminum-silicon alloy, can fully utilize the existing circular ingot casting equipment and casting system, and does not need to increase equipment investment.
2. The process is simple, the production efficiency is high, 120 tons can be produced by 12 hours of production flow of 6 people per furnace, 20 tons can be produced by people, and 3 furnaces can be produced by 12 hours of 1 person of the small traditional land furnace, 250kg can be produced by people, and 0.75 ton can be produced by people, so that the production efficiency is improved by nearly 27 times compared with that of the small land furnace.
3. The regenerated aluminum ingot and the waste are fully utilized, and the energy is saved.
4. The aluminum-silicon alloy rod produced by the invention has no coarse primary crystal silicon phase, stable components and uniform structure, and the quality of products such as round cast ingots, cast-rolled coils and the like cast by the aluminum-silicon alloy rod is obviously improved.
The invention has the advantages that:
1. the existing circular ingot casting equipment and the existing circular ingot casting system can be fully utilized, and the equipment investment is not required to be increased.
2. Simple process and high production efficiency, and compared with the traditional aluminum-silicon alloy production method, the production efficiency is improved by nearly 27 to 30 times.
3. Can make full use of the regenerated aluminum ingot and the sectional material waste materials, and saves energy.
4. The aluminum-silicon alloy rod produced by the invention has stable components and uniform structure, and the quality of products such as round cast ingots, cast-rolled coils and the like cast by the aluminum-silicon alloy rod is obviously improved.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The production method of the aluminum-silicon alloy rod is characterized by comprising the following steps of:
s1, batching and charging, wherein the regenerated ingot, waste material and industrial silicon produced by smelting aluminum ash are selected as raw materials, and the silicon content is controlled according to 10-12.5%; the charging sequence is as follows: paving the bottom with regenerated ingots and waste materials, processing industrial silicon, igniting and heating until solid materials are molten and the industrial silicon is completely red, and stirring;
s2, smelting
S21, stirring, flattening the materials in the smelting furnace, and then stirring by using an electromagnetic stirrer and a forklift;
s22, slagging off for the first time, wherein when the temperature of the aluminum melt reaches 720 ℃, a forklift uses a special slag rake to scrape off the dross on the surface of the aluminum liquid in the furnace, so as to ensure that no dross is on the surface of the aluminum liquid;
s23, refining, namely refining by using a powder refining agent;
s24, sampling, namely sampling by using a sampling spoon, and carrying out the next operation when the detected components are within the chemical component control standard range;
the chemical composition control standard is as follows:
Mg≤0.30％，
Fe≤0.30％，
Si：10.0-12.5％，
Cu≤0.03％，
Mn≤0.05％，
Cr≤0.01％，
Zn≤0.03％，
Ti≤0.10％，
the above percentages are mass percentages;
s25, after sampling, slagging off for the second time to completely remove dross on the liquid level out of the furnace, and standing the melt for casting;
s3, casting, wherein the casting temperature in the furnace is 750-755 ℃, and the alloy rod is formed by casting;
and S4, sawing the aluminum-silicon alloy rod into two or more sections to complete the production of the aluminum-silicon alloy rod.
2. The method for producing an aluminum-silicon alloy rod according to claim 1, wherein the industrial silicon yield is 95% in step S1.
3. The method for producing an aluminum-silicon alloy rod according to claim 1, wherein in step S21, the stirring process is: after materials in the smelting furnace are leveled, the materials are stirred for 1 time by using an electromagnetic stirrer, and stirred for two times by using a forklift according to an N shape.
4. The method for producing the aluminum-silicon alloy rod as claimed in claim 1, wherein in step S24, the sampling spoon is preheated for 1-3 minutes, and then rinsed in the melt for more than 4 times, and samples are taken at the positions 1.25-1.35 meters away from the furnace door sill and the depth of aluminum liquid 1/2 at the center of two furnace doors, and 2 samples are taken in each furnace.
5. The method for producing an aluminum-silicon alloy rod according to claim 1, wherein the temperature at the time of first slag skimming in step S22 is not less than 720 ℃.
6. The method for producing an aluminum-silicon alloy rod according to claim 1, wherein in step S23, the amount of the refining agent is 1.5kg per ton of aluminum; the refining time is 15 +/-3 min, and the refining temperature is 730-; and starting electromagnetic stirring in the refining process.
7. The method for producing an aluminum-silicon alloy rod according to claim 1, wherein in step S4, the aluminum-silicon alloy rod is sawed into 2 to 3 sections by using an aluminum alloy round ingot disc saw.
8. The method for producing the aluminum-silicon alloy rod as claimed in claim 1, wherein the step S3 further includes baking the runner and the platform before casting, and the runner temperature is controlled to 50-100 ℃.
9. The method for producing aluminum-silicon alloy rods according to claim 1, wherein in step S3, 25 ton deep well casting with a 120mm platform is used.
10. The method for producing the Al-Si alloy rod as claimed in claim 1, wherein the casting speed is 140-; in the casting process, on-line degassing and filtering are used, and single-stage filtering is performed by adopting a 40ppi ceramic filter plate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058612A (en) * | 2022-06-23 | 2022-09-16 | 苏州铭恒金属材料科技有限公司 | Production method of aluminum alloy mobile phone panel anode black line |
| CN116555640A (en) * | 2023-05-08 | 2023-08-08 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
Citations (2)
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| CN102618738A (en) * | 2012-04-24 | 2012-08-01 | 东莞市奥达铝业有限公司 | Smelting process for aluminum-silicon master alloy |
| CN108998703A (en) * | 2018-07-25 | 2018-12-14 | 吉林大学 | From the preparation method for breeding stick and preparation method thereof He hypoeutectic al-si alloy semi solid slurry |
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2019
- 2019-09-12 CN CN201910864369.XA patent/CN112481526A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618738A (en) * | 2012-04-24 | 2012-08-01 | 东莞市奥达铝业有限公司 | Smelting process for aluminum-silicon master alloy |
| CN108998703A (en) * | 2018-07-25 | 2018-12-14 | 吉林大学 | From the preparation method for breeding stick and preparation method thereof He hypoeutectic al-si alloy semi solid slurry |
Non-Patent Citations (2)
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| 唐剑等: "《铝合金熔炼与铸造技术》", 30 April 2009, 冶金工业出版社 * |
| 程龙轩等: "《铝合金车轮与钢制车轮、轮箍生产加工新工艺新技术及产品质量检测实用手册》", 31 July 2007, 北方工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058612A (en) * | 2022-06-23 | 2022-09-16 | 苏州铭恒金属材料科技有限公司 | Production method of aluminum alloy mobile phone panel anode black line |
| CN116555640A (en) * | 2023-05-08 | 2023-08-08 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
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