CN113104851A - High-silicon aluminum alloy and production process thereof - Google Patents
High-silicon aluminum alloy and production process thereof Download PDFInfo
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- CN113104851A CN113104851A CN202110248907.XA CN202110248907A CN113104851A CN 113104851 A CN113104851 A CN 113104851A CN 202110248907 A CN202110248907 A CN 202110248907A CN 113104851 A CN113104851 A CN 113104851A
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- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
Abstract
The invention relates to the technical field of silicon-aluminum alloy, in particular to a high-silicon aluminum alloy which comprises the following raw materials in parts by weight: 85-95 parts of silicon, 2-5 parts of aluminum, 0.5-1 part of manganese, 1-2 parts of copper, 0.2-0.5 part of titanium, 0.2-0.5 part of chromium and 0.5-1 part of rare earth. The invention also provides a production process of the high-silicon aluminum alloy. According to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
Description
Technical Field
The invention relates to the technical field of silicon-aluminum alloy, in particular to a high-silicon aluminum alloy and a production process thereof.
Background
In China, the yield of crystalline silicon is very high, and the crystalline silicon is used as a deoxidizer for steelmaking and also used for preparing a silicon-aluminum alloy which is called an intermediate alloy. It can be used to prepare various alloys, such as 108 # alloy, 6063 # alloy, etc. by mixing it with other metals. Previously formulated silicon-aluminum alloys were essentially high aluminum eutectic alloys, defined by the eutectic nature of aluminum and silicon, with aluminum content as high as 85% or more. And China is a country lacking aluminum, the aluminum price is 60% higher than the silicon price, and the high-aluminum-silicon aluminum alloy is produced by using a large amount of aluminum and a small amount of silicon, so that the product cost is high, and the products of domestic manufacturers producing large amounts of crystalline silicon are lost.
Disclosure of Invention
The invention aims to solve the defects of large aluminum consumption and small silicon consumption in the prior art, and provides a high-silicon aluminum alloy and a production process thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
designing a high-silicon aluminum alloy which comprises the following raw materials in parts by weight:
85-95 parts of silicon, 2-5 parts of aluminum, 0.5-1 part of manganese, 1-2 parts of copper, 0.2-0.5 part of titanium, 0.2-0.5 part of chromium and 0.5-1 part of rare earth.
Preferably, the formula of the raw materials is as follows according to parts by weight:
88-92 parts of silicon, 3-4 parts of aluminum, 0.6-0.8 part of manganese, 1.4-1.8 parts of copper, 0.3-0.4 part of titanium, 0.3-0.4 part of chromium and 0.6-0.8 part of rare earth.
Preferably, the formula of the raw materials is as follows according to parts by weight:
90 parts of silicon, 3.5 parts of aluminum, 0.7 part of manganese, 1.5 parts of copper, 0.35 part of titanium, 0.35 part of chromium and 0.7 part of rare earth.
The invention also provides a production process of the high-silicon aluminum alloy, which comprises the following steps:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the particle size of 35-45 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 35-45 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 35-45 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1450-1500 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
The high-silicon aluminum alloy and the production process thereof provided by the invention have the beneficial effects that: according to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
The high-silicon aluminum alloy comprises the following raw materials in parts by weight:
85 parts of silicon, 2 parts of aluminum, 0.5 part of manganese, 1 part of copper, 0.2 part of titanium, 0.2 part of chromium and 0.5 part of rare earth.
The invention also provides a production process of the high-silicon aluminum alloy, which comprises the following steps:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the particle size of 35 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 35 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 35 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1450 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
According to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
Example 2
The high-silicon aluminum alloy comprises the following raw materials in parts by weight:
88 parts of silicon, 3 parts of aluminum, 0.6 part of manganese, 1.4 parts of copper, 0.3 part of titanium, 0.3 part of chromium and 0.6 part of rare earth.
The invention also provides a production process of the high-silicon aluminum alloy, which comprises the following steps:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the particle size of 38 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 38 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 38 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1470 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
According to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
Example 3
The high-silicon aluminum alloy comprises the following raw materials in parts by weight:
92 parts of silicon, 4 parts of aluminum, 0.8 part of manganese, 1.8 parts of copper, 0.4 part of titanium, 0.4 part of chromium and 0.8 part of rare earth.
The invention also provides a production process of the high-silicon aluminum alloy, which comprises the following steps:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the granularity of 42 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 42 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 42 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1490 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
According to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
Example 4
The high-silicon aluminum alloy comprises the following raw materials in parts by weight:
95 parts of silicon, 5 parts of aluminum, 1 part of manganese, 2 parts of copper, 0.5 part of titanium, 0.5 part of chromium and 1 part of rare earth.
The invention also provides a production process of the high-silicon aluminum alloy, which comprises the following steps:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the granularity of 45 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 45 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 45 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1500 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
According to the invention, the high-silicon aluminum alloy is prepared by increasing the silicon content and reducing the aluminum content, so that the silicon consumption can be increased, the aluminum consumption can be reduced, the raw material cost of the silicon aluminum alloy can be reduced, the eutectic structure can be refined by adding rare earth, and the high-temperature performance of the high-silicon aluminum alloy can be improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The high-silicon aluminum alloy is characterized by comprising the following raw materials in parts by weight:
85-95 parts of silicon, 2-5 parts of aluminum, 0.5-1 part of manganese, 1-2 parts of copper, 0.2-0.5 part of titanium, 0.2-0.5 part of chromium and 0.5-1 part of rare earth.
2. The high-silicon aluminum alloy according to claim 1, characterized in that the formula comprises the following raw materials in parts by weight:
88-92 parts of silicon, 3-4 parts of aluminum, 0.6-0.8 part of manganese, 1.4-1.8 parts of copper, 0.3-0.4 part of titanium, 0.3-0.4 part of chromium and 0.6-0.8 part of rare earth.
3. The high-silicon aluminum alloy according to claim 1, characterized in that the formula comprises the following raw materials in parts by weight:
90 parts of silicon, 3.5 parts of aluminum, 0.7 part of manganese, 1.5 parts of copper, 0.35 part of titanium, 0.35 part of chromium and 0.7 part of rare earth.
4. The process for producing a high silicon aluminum alloy according to claim 1, comprising the steps of:
s1, taking silicon, aluminum, manganese, copper, titanium, chromium and rare earth according to the formula in parts by weight for later use;
s2, preparing chromium powder: soaking chromium in low-temperature liquid nitrogen, grinding the chromium by using grinding equipment under the condition of the low-temperature liquid nitrogen, and screening chromium powder by using screening equipment to obtain chromium powder with the particle size of 35-45 mu m;
s3, preparing titanium powder: crushing titanium into titanium powder with the granularity of 35-45 mu m by using a centrifugal atomization method;
s4, preparing rare earth powder: preparing rare earth into rare earth powder with the granularity of 35-45 mu m by using grinding equipment;
s5, putting the solid silicon into a high-temperature electric furnace, starting the high-temperature electric furnace, controlling the temperature of the high-temperature electric furnace at 1450-1500 ℃, and melting the solid silicon into liquid silicon in the high-temperature electric furnace;
s6, sequentially adding aluminum, manganese and copper into the liquid silicon below the covering agent, melting the aluminum, the manganese and the copper by using the temperature in the high-temperature electric furnace, sequentially adding chromium powder, titanium powder and rare earth powder into the liquid silicon below the covering agent, and stirring to fully mix the chromium powder, the titanium powder, the rare earth powder, the liquid aluminum, the liquid manganese and the liquid copper into the liquid silicon;
and S7, introducing the liquid in the high-temperature electric furnace into the mold, and cooling to obtain the high-silicon aluminum alloy.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066476A (en) * | 1992-05-12 | 1992-11-25 | 湖南省进出口总公司通联公司 | Low aluminium silico-aluminum alloy and production technique thereof |
| CN104141086A (en) * | 2014-08-06 | 2014-11-12 | 邢大伟 | Alloying component suitable for producing aluminum-silicon alloy electronic packaging materials through smelting cast method |
| WO2015169163A1 (en) * | 2014-05-08 | 2015-11-12 | Byd Company Limited | Aluminum alloy and method of preparing the same |
| CN105695819A (en) * | 2016-03-19 | 2016-06-22 | 杜生龙 | Method for preparing high-silicon aluminum alloy |
| CN106435292A (en) * | 2016-08-08 | 2017-02-22 | 长沙博朗思达金属材料有限公司 | High-strength high-silicon aluminum alloy containing trace rare earth and preparation method thereof and application |
| CN108149080A (en) * | 2017-12-10 | 2018-06-12 | 长沙无道工业设计有限公司 | A kind of aluminium alloy containing rare earth and preparation method thereof |
-
2021
- 2021-03-08 CN CN202110248907.XA patent/CN113104851A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066476A (en) * | 1992-05-12 | 1992-11-25 | 湖南省进出口总公司通联公司 | Low aluminium silico-aluminum alloy and production technique thereof |
| WO2015169163A1 (en) * | 2014-05-08 | 2015-11-12 | Byd Company Limited | Aluminum alloy and method of preparing the same |
| CN104141086A (en) * | 2014-08-06 | 2014-11-12 | 邢大伟 | Alloying component suitable for producing aluminum-silicon alloy electronic packaging materials through smelting cast method |
| CN105695819A (en) * | 2016-03-19 | 2016-06-22 | 杜生龙 | Method for preparing high-silicon aluminum alloy |
| CN106435292A (en) * | 2016-08-08 | 2017-02-22 | 长沙博朗思达金属材料有限公司 | High-strength high-silicon aluminum alloy containing trace rare earth and preparation method thereof and application |
| CN108149080A (en) * | 2017-12-10 | 2018-06-12 | 长沙无道工业设计有限公司 | A kind of aluminium alloy containing rare earth and preparation method thereof |
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Application publication date: 20210713 |
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