CN107419118A - A kind of preparation method of aluminium lead silicon alloy - Google Patents
A kind of preparation method of aluminium lead silicon alloy Download PDFInfo
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- CN107419118A CN107419118A CN201710267936.4A CN201710267936A CN107419118A CN 107419118 A CN107419118 A CN 107419118A CN 201710267936 A CN201710267936 A CN 201710267936A CN 107419118 A CN107419118 A CN 107419118A
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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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- 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
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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Abstract
The invention discloses a kind of preparation method of aluminium lead silicon alloy, the present invention is cooled down in alloy melt and occurred before liquid liquid phase becomes by adding micro Ni and C into alloy melt, Ni and the C Precipitation from melt with NiC particulate forms, so as to significantly nucleation rate；In addition reduce alloy molten solution temperature by controlling the method for forming core and prepare semi solid slurry, make alloy molten solution by during forming core passage by strong stirring, primary silicon can effectively be suppressed to grow up, the features such as even tissue, consistency are high, the coefficient of expansion is low and thermal conductivity is high, excellent combination property.
Description
Technical field
The present invention relates to field of aluminum alloy manufacturing, and in particular to a kind of preparation method of aluminium lead silicon alloy.
Background technology
Alloy material can have the characteristic of different metal element due to Determination of multiple metal elements in the material be present,
After the characteristic for possessing different metal element, the performance and use range of alloy material are expanded.The use of albronze alloy
Scope is very wide, can be used for light industry, heavy industry, electronics industry etc..Such as be used to make spring, electronic equipment metal part,
Hardware equipment, Medical Devices etc.
Al-Pb alloys are a kind of important bush materials, and appropriate Pb is added in Al can improve the antifriction quality of material.They
There is the unmixing temperature range of constituent element, rich Pb phases drop Precipitation from melt for liquid.Due to the difference in specific gravity between two liquid phases
It is very big, easily form that phase segregation is serious or even the phenomenon of two phase stratification during liquid-liquid decomposition, therefore, prepare and coagulated with diffusion-type
Gu the Al-Pb alloys of tissue are extremely difficult, which has limited the commercial Application of Al-Pb alloys.
The content of the invention
The present invention provides a kind of preparation method of aluminium lead silicon alloy, and the present invention is by adding micro Ni into alloy melt
And C, before alloy melt cools down liquid-liquid decomposition occurs, Ni and the C Precipitation from melt with NiC particulate forms, so as to significantly
Spend nucleation rate；In addition reduce alloy molten solution temperature by controlling the method for forming core and prepare semi solid slurry, make alloy molten solution
By, by strong stirring, can effectively suppress primary silicon during forming core passage and grow up, even tissue, consistency are high, the coefficient of expansion is low
And thermal conductivity it is high the features such as, excellent combination property.
To achieve these goals, the invention provides a kind of preparation method of aluminium lead silicon alloy, this method to include as follows
Step：
（1）Prepare Al-Pb alloy base material
Using foundry engieering, micro Ni and C are added into Al-Pb alloy melts, in alloy melt cooling procedure, in liquid-
Before liquid phase becomes, the Precipitation from alloy melt, the NiC particles of precipitation occur in alloy melt with NiC particulate forms by Ni and C
As rich Pb phases or the forming core substrate of rich Bi phases drop during liquid-liquid decomposition, the nucleation rate of rich Pb or rich Bi phase drops is improved, is promoted
The acquisition of Al-Pb or Al-Bi alloys with diffusion-type composite solidification tissue；
The Ni and C add in melting Al-Pb alloys, and the smelting temperature and pouring temperature of alloy melt are higher than alloy constituent element
Mutual more than solubility temperature 150K, less than 1220K；
The Ni and C are fully dissolved in alloy melt after adding alloy melt, the Ni and C mol ratio added in alloy melt
Example is (1-1.1)：1；
（2）By material dispensing in proportion, wherein proportion scale is that the mass percent of silicon is 21%-35%, and surplus is above-mentioned aluminium
Metal base material；
Above-mentioned dispensing is superheated to the 90-120 DEG C of refining of the liquidus temperature above；
By the alloy molten solution after refining pour into preheating after quantitative furnace and cover bell；
The valve of quantitative furnace tops is opened, while opens the valve of argon bottle, untill the air in stove drains completely,
The valve and the valve of argon bottle finally closed at the top of bell；
Alloy molten solution in stove is superheated to 250-300 DEG C of the liquidus temperature above；
Alloy molten solution in stove is incubated 0.5-1 hours in the case of 250-300 DEG C of the liquidus temperature above；
The high temperature alloy liquation of overheat is delivered to by control forming core device by stalk with constant displacement pump, control forming core device closes high temperature
Golden liquation is quickly cooled to semi-solid temperature area and completes semi solid slurry preparation；
By the direct rheo-diecasting of obtained semi solid slurry, and densification processing is done, obtain product.
Preferably, it is described densification processing be specially：Ingot blank is put into hot isostatic apparatus, ingot blank is densified
Processing.Protective gas is nitrogen, and treatment temperature is 640 DEG C -700 DEG C, pressure 120MPa-180MPa, is incubated 5-6 hours.It is cold
But resulting materials are the aluminium lead silicon alloy that consistency is more than 99% excellent combination property after.
It is an advantage of the current invention that by adding micro Ni and C into alloy melt, cool down and occur in alloy melt
Before liquid-liquid decomposition, Ni and the C Precipitation from melt with NiC particulate forms, so as to significantly nucleation rate；In addition control is passed through
The method of forming core reduces alloy molten solution temperature and prepares semi solid slurry, makes alloy molten solution by strongly being stirred during forming core passage
Mix, can effectively suppress primary silicon and grow up, it is the features such as even tissue, consistency are high, the coefficient of expansion is low and thermal conductivity is high, comprehensive
Excellent performance.
Embodiment
Embodiment one
Using foundry engieering, micro Ni and C are added into Al-Pb alloy melts, in alloy melt cooling procedure, in liquid-
Before liquid phase becomes, the Precipitation from alloy melt, the NiC particles of precipitation occur in alloy melt with NiC particulate forms by Ni and C
As rich Pb phases or the forming core substrate of rich Bi phases drop during liquid-liquid decomposition, the nucleation rate of rich Pb or rich Bi phase drops is improved, is promoted
The acquisition of Al-Pb or Al-Bi alloys with diffusion-type composite solidification tissue；
The Ni and C add in melting Al-Pb alloys, and the smelting temperature and pouring temperature of alloy melt are higher than alloy constituent element
Mutual more than solubility temperature 150K, less than 1220K；
The Ni and C are fully dissolved in alloy melt after adding alloy melt, the Ni and C mol ratio added in alloy melt
Example is 1.1：1；
By material dispensing in proportion, wherein proportion scale is that the mass percent of silicon is 21%, and surplus is above-mentioned Al-Pb alloy base
Material；Above-mentioned dispensing is superheated to more than liquidus temperature 90 DEG C of refinings；
By the alloy molten solution after refining pour into preheating after quantitative furnace and cover bell；The valve of quantitative furnace tops is opened,
The valve of argon bottle is opened simultaneously, untill the air in stove drains completely, the valve and argon gas finally closed at the top of bell
The valve of bottle；Alloy molten solution in stove is superheated to more than liquidus temperature 250 DEG C；By alloy molten solution in stove in liquidus temperature
0.5 hour is incubated in the case of 250 DEG C of the above；The high temperature alloy liquation of overheat is delivered to by control by stalk with constant displacement pump
High temperature alloy liquation is quickly cooled to semi-solid temperature area and completes semi solid slurry and prepared by forming core device, control forming core device.
By the direct rheo-diecasting of obtained semi solid slurry, ingot blank is subjected to densification processing, that is, obtains consistency and is more than
99% aluminium lead silicon alloy.It is described densification processing be specially：Ingot blank is put into hot isostatic apparatus, ingot blank is caused
Densification process.Protective gas is nitrogen, and treatment temperature is 640 DEG C, pressure 120MPa, is incubated 5 hours.Resulting materials after cooling
As consistency is more than the aluminium lead silicon alloy of 99% excellent combination property.
Embodiment two
Using foundry engieering, micro Ni and C are added into Al-Pb alloy melts, in alloy melt cooling procedure, in liquid-
Before liquid phase becomes, the Precipitation from alloy melt, the NiC particles of precipitation occur in alloy melt with NiC particulate forms by Ni and C
As rich Pb phases or the forming core substrate of rich Bi phases drop during liquid-liquid decomposition, the nucleation rate of rich Pb or rich Bi phase drops is improved, is promoted
The acquisition of Al-Pb or Al-Bi alloys with diffusion-type composite solidification tissue；
The Ni and C add in melting Al-Pb alloys, and the smelting temperature and pouring temperature of alloy melt are higher than alloy constituent element
Mutual more than solubility temperature 150K, less than 1220K；
The Ni and C are fully dissolved in alloy melt after adding alloy melt, the Ni and C mol ratio added in alloy melt
Example is 1.1：1；
Liquid aluminium alloy material is cooled to liquid-solid two-phase section, is positioned in inert gas；Liquid is stirred in inert gas environment
Liquid composite material is mixed, and temperature is progressively reduced to normal temperature, can obtain the Al-Pb alloy base material of high quality.
By material dispensing in proportion, wherein proportion scale is that the mass percent of silicon is 35%, and surplus is that above-mentioned aluminium lead closes
Auri material；Above-mentioned dispensing is superheated to more than liquidus temperature 120 DEG C of refinings；
By the alloy molten solution after refining pour into preheating after quantitative furnace and cover bell；The valve of quantitative furnace tops is opened,
The valve of argon bottle is opened simultaneously, untill the air in stove drains completely, the valve and argon gas finally closed at the top of bell
The valve of bottle；Alloy molten solution in stove is superheated to more than liquidus temperature 300 DEG C；By alloy molten solution in stove in liquidus temperature
1 hour is incubated in the case of 300 DEG C of the above；The high temperature alloy liquation of overheat is delivered to by control shape by stalk with constant displacement pump
High temperature alloy liquation is quickly cooled to semi-solid temperature area and completes semi solid slurry and prepared by core device, control forming core device.
By the direct rheo-diecasting of obtained semi solid slurry, ingot blank is subjected to densification processing, that is, obtains consistency more than 99%
Aluminium lead silicon alloy.It is described densification processing be specially：Ingot blank is put into hot isostatic apparatus, ingot blank is densified
Processing.Protective gas is nitrogen, and treatment temperature is 700 DEG C, pressure 180MPa, is incubated 6 hours.Resulting materials are after cooling
Consistency is more than the aluminium lead silicon alloy of 99% excellent combination property.
Claims (2)
1. a kind of preparation method of aluminium lead silicon alloy, this method comprise the following steps：
（1）Prepare Al-Pb alloy base material
Using foundry engieering, micro Ni and C are added into Al-Pb alloy melts, in alloy melt cooling procedure, in liquid-
Before liquid phase becomes, the Precipitation from alloy melt, the NiC particles of precipitation occur in alloy melt with NiC particulate forms by Ni and C
As rich Pb phases or the forming core substrate of rich Bi phases drop during liquid-liquid decomposition, the nucleation rate of rich Pb or rich Bi phase drops is improved, is promoted
The acquisition of Al-Pb or Al-Bi alloys with diffusion-type composite solidification tissue；
The Ni and C add in melting Al-Pb alloys, and the smelting temperature and pouring temperature of alloy melt are higher than alloy constituent element
Mutual more than solubility temperature 150K, less than 1220K；
The Ni and C are fully dissolved in alloy melt after adding alloy melt, the Ni and C mol ratio added in alloy melt
Example is (1-1.1)：1；
（2）By material dispensing in proportion, wherein proportion scale is that the mass percent of silicon is 21%-35%, and surplus is above-mentioned aluminium
Metal base material；
Above-mentioned dispensing is superheated to the 90-120 DEG C of refining of the liquidus temperature above；
By the alloy molten solution after refining pour into preheating after quantitative furnace and cover bell；
The valve of quantitative furnace tops is opened, while opens the valve of argon bottle, untill the air in stove drains completely,
The valve and the valve of argon bottle finally closed at the top of bell；
Alloy molten solution in stove is superheated to 250-300 DEG C of the liquidus temperature above；
Alloy molten solution in stove is incubated 0.5-1 hours in the case of 250-300 DEG C of the liquidus temperature above；
The high temperature alloy liquation of overheat is delivered to by control forming core device by stalk with constant displacement pump, control forming core device closes high temperature
Golden liquation is quickly cooled to semi-solid temperature area and completes semi solid slurry preparation；
By the direct rheo-diecasting of obtained semi solid slurry, and densification processing is done, obtain product.
2. the method as described in claim 1, it is characterised in that it is described densification processing be specially：It is quiet that ingot blank is put into heat etc.
Press in equipment, densification carried out to ingot blank,
Protective gas is nitrogen, and treatment temperature is 640 DEG C -700 DEG C, pressure 120MPa-180MPa, is incubated 5-6 hours,
Resulting materials are the aluminium lead silicon alloy that consistency is more than 99% excellent combination property after cooling.
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| CN201710267936.4A CN107419118A (en) | 2017-04-22 | 2017-04-22 | A kind of preparation method of aluminium lead silicon alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251812A (en) * | 2018-03-07 | 2018-07-06 | 瞿凌飞 | A kind of preparation method of the aluminium lead silicon alloy containing rare-earth mamem layer |
| CN108396164A (en) * | 2018-03-07 | 2018-08-14 | 戴爱娟 | A kind of preparation method for the aluminium lead silicon alloy plank having coating |
| CN112921203A (en) * | 2021-01-25 | 2021-06-08 | 广东工程职业技术学院 | Grain refiner for regenerated aluminum alloy and preparation method and application thereof |
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| JP2012040608A (en) * | 2010-07-20 | 2012-03-01 | Furukawa-Sky Aluminum Corp | Structure using aluminum alloy material and joining method for the same |
| CN102978485A (en) * | 2011-09-07 | 2013-03-20 | 长沙华希金属材料有限公司 | Novel high-silicon aluminum alloy electronic packaging material and preparation method thereof |
| CN105750521A (en) * | 2016-03-02 | 2016-07-13 | 慈溪阿尔特新材料有限公司 | Semi-solid rheologic die-casting method capable of refining primary silicon of high-silicon aluminum alloy and device thereof |
| CN105965024A (en) * | 2016-06-08 | 2016-09-28 | 西安理工大学 | Method for liquid-phase connection of CuW material and CuCr material through high-entropy alloy |
| CN105986134A (en) * | 2015-01-30 | 2016-10-05 | 中南大学 | Method for preparing high silicon aluminum alloy electronic packaging material |
| CN106282615A (en) * | 2015-06-12 | 2017-01-04 | 中国科学院金属研究所 | A kind of have diffusion-type composite solidification tissue Al-Pb or the preparation method of Al-Bi alloy |
| CN106282620A (en) * | 2015-06-12 | 2017-01-04 | 中国科学院金属研究所 | A kind of method that there is diffusion-type composite solidification tissue Al-Bi alloy by adding nucleating agent to prepare |
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- 2017-04-22 CN CN201710267936.4A patent/CN107419118A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012040608A (en) * | 2010-07-20 | 2012-03-01 | Furukawa-Sky Aluminum Corp | Structure using aluminum alloy material and joining method for the same |
| CN102978485A (en) * | 2011-09-07 | 2013-03-20 | 长沙华希金属材料有限公司 | Novel high-silicon aluminum alloy electronic packaging material and preparation method thereof |
| CN105986134A (en) * | 2015-01-30 | 2016-10-05 | 中南大学 | Method for preparing high silicon aluminum alloy electronic packaging material |
| CN106282615A (en) * | 2015-06-12 | 2017-01-04 | 中国科学院金属研究所 | A kind of have diffusion-type composite solidification tissue Al-Pb or the preparation method of Al-Bi alloy |
| CN106282620A (en) * | 2015-06-12 | 2017-01-04 | 中国科学院金属研究所 | A kind of method that there is diffusion-type composite solidification tissue Al-Bi alloy by adding nucleating agent to prepare |
| CN105750521A (en) * | 2016-03-02 | 2016-07-13 | 慈溪阿尔特新材料有限公司 | Semi-solid rheologic die-casting method capable of refining primary silicon of high-silicon aluminum alloy and device thereof |
| CN105965024A (en) * | 2016-06-08 | 2016-09-28 | 西安理工大学 | Method for liquid-phase connection of CuW material and CuCr material through high-entropy alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251812A (en) * | 2018-03-07 | 2018-07-06 | 瞿凌飞 | A kind of preparation method of the aluminium lead silicon alloy containing rare-earth mamem layer |
| CN108396164A (en) * | 2018-03-07 | 2018-08-14 | 戴爱娟 | A kind of preparation method for the aluminium lead silicon alloy plank having coating |
| CN112921203A (en) * | 2021-01-25 | 2021-06-08 | 广东工程职业技术学院 | Grain refiner for regenerated aluminum alloy and preparation method and application thereof |
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Application publication date: 20171201 |