CN113005338A - Composite aluminum alloy material for radiator and preparation method thereof - Google Patents
Composite aluminum alloy material for radiator and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of radiator aluminum alloy, and particularly relates to a composite radiator aluminum alloy material which comprises the following components in parts by weight: 12.2-13.3 parts of Si, 2.6-2.8 parts of Cu, 0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.7-1.1 part of Zn, 0.8-0.95 part of Fe, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al. The production process is simple, standardized, repeated and industrialized production can be realized, the aluminum alloy material is required to have very high fluidity during casting of the composite radiator, the fluidity of the aluminum alloy in the die-casting of the deep-cavity thin-wall part in the radiator is promoted to be good by optimizing the contents of silicon, magnesium, iron, copper and zinc in the aluminum alloy, the forming is easy, the die sticking is reduced, the corrosion resistance of an inner cavity is enhanced, and the strength, the plasticity and the pressure resistance of the aluminum alloy are improved by adding rare earth elements into the aluminum alloy.
Description
Technical Field
The invention relates to a composite aluminum alloy material for a radiator and a preparation method thereof. Belongs to the technical field of radiator aluminum alloy.
Background
According to the analysis of the Chinese heating network: at present, light energy-saving heating radiators at home and abroad are in vigorous market demand, the international market demand is huge, the domestic urban and urban living target in China is about to reach 35 square meters, urban houses with 5.1 million square meters are built every year, heating areas are further expanded under the background of old house reconstruction, rural construction urbanization and the like, the process contains a great amount of demand on light energy-saving heating radiators with medium and high grade levels, the demand is calculated according to 2 square meters provided for each 130W, the annual demand reaches 2.55 million sheets, in addition, the quality standard of the heating radiators is continuously improved, and higher requirements on the quality, the heating effect, energy conservation and the like of the heaters are provided, so that the further research and production of high-performance aluminum alloy heaters have wide market prospects in China.
The main defects of the existing cast iron and steel radiators in the using process are analyzed as follows:
1. poor heat-conducting property, heavy weight, large volume and large occupied space for installation;
2. the metal heat intensity is small, the heat dissipation efficiency is low, in order to increase the heat dissipation capacity, the heat dissipation surface area is increased by increasing the number of heat dissipation units, so that the cost is not only increased, but also the volume of the heat sink is increased, and the space for installing the heat sink is increased;
3. the radiator made of cast iron has rough surface and high surface treatment difficulty, the radiator made of steel has more welding spots, high loss and low production efficiency, the appearance shapes of the radiator and the radiator are poor, and the product grade is low;
4. the inner cavity of the radiator made of cast iron is not easy to process, the inner cavity of the product after water heating is carried out due to sand accumulation is corroded, and the service life is short.
Therefore, it is very important to improve the performance of the aluminum alloy special for the radiator. The company carries out application research on the forming and application of the trace elements to the aluminum alloy thin-wall part by means of research and development advantages of colleges and universities, improves the technical level and product grade of the aluminum radiator by improving various performances of the aluminum alloy, and promotes the improvement of economic benefits and social benefits.
Disclosure of Invention
The invention provides a composite radiator aluminum alloy material which has simple production process, can realize standardized, repeated and industrialized production, promotes the aluminum alloy to have good fluidity in the die casting of deep-cavity thin-wall parts in a radiator by optimizing the contents of silicon, magnesium, iron, copper and zinc in the aluminum alloy, is easy to form, reduces sticking die and enhances corrosion resistance, and improves the strength, plasticity and pressure resistance of the aluminum alloy by adding rare earth elements in the aluminum alloy, thereby solving the problems in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the composite aluminum alloy material for the radiator comprises the following components in parts by weight: 12.2-13.3 parts of Si, 2.6-2.8 parts of Cu, 0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.7-1.1 part of Zn, 0.8-0.95 part of Fe, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al. Silicon is a main element for improving the fluidity of liquid aluminum alloy, good fluidity can be obtained from eutectic to hypereutectic, but the silicon separated out after crystallization is thicker and larger, hard spots are easy to form, the elongation is reduced, and the machinability is poor; magnesium can improve the corrosion resistance of products and inhibit intergranular corrosion, and aluminum-magnesium alloy has good corrosion resistance, so ADC5 and ADC6 are corrosion-resistant alloys, but the solidification range is large, hot brittleness is easy to generate, cracks and looseness are generated in die castings, and the die castings are difficult to die-cast and mold. According to the technical scheme, proper magnesium is added into the high-silicon aluminum alloy, so that the corrosion resistance of the aluminum alloy is improved, the hot brittleness is not generated, the mold is not easy to demould when the iron content in the aluminum alloy is low, the service life of the mold is reduced, the mold sticking phenomenon is reduced along with the increase of the iron content, but the iron content is too high, and a needle-shaped metal compound FeAl can be generated3Although the die-casting cooling speed is high, the precipitated crystals are fine and have little influence on the performance, the phenomenon of instantaneous cutter jump can occur in the subsequent machining process, and when the iron content is high, the fluidity of the alloy can be reduced, the quality of a casting is damaged, and the service life of a metal component in the die-casting equipment is shortened. The addition of a certain amount of copper into the aluminum alloy can obviously improve the strength and the hardness of the alloy, but the precipitation of an Al-Cu compound phase can shrink and expand after die-casting forming, so that the size of a casting is unstable, if zinc is contained as an impurity, the high-temperature brittleness is high, but the high-temperature brittleness and mercury form a strengthening phase HgZn2The aluminum alloy has obvious strength effect, the technical proposal improves the fluidity of the aluminum alloy by optimizing the contents of silicon, magnesium, iron, copper and the like in the aluminum alloy,the corrosion resistance is increased, the die is not stuck, and the strength, the plasticity and the die-casting performance of the aluminum alloy are not reduced.
The composite aluminum alloy material for the radiator comprises the following components in parts by weight: 12.2 parts of Si, 2.6 parts of Cu, 0.4 part of Mg, 0.1 part of Mn, 0.01 part of Sn, 0.04 part of Ni, 0.7 part of Zn, 0.9 part of Fe, 0.04 part of Pb, 0.0012 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0004 part of Dy, 0.003 part of Pr, 0.0112 part of Er, 0.0009 part of Lu, 0.08 part of K, 0.15 part of Ba and 82 parts of Al.
The composite aluminum alloy material for the radiator comprises the following components in parts by weight: 13.3 parts of Si, 2.8 parts of Cu, 0.5 part of Mg, 0.25 part of Mn, 0.02 part of Sn, 0.05 part of Ni, 1.1 part of Zn, 0.95 part of Fe, 0.03 part of Pb, 0.0015 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0023 part of Dy, 0.001 part of Pr, 0.0115 part of Er, 0.0075 part of Lu, 0.1 part of K, 0.1 part of Ba and 87.6 parts of Al.
The composite aluminum alloy material for the radiator comprises the following components in parts by weight: 13 parts of Si, 2.7 parts of Cu, 0.45 part of Mg, 0.2 part of Mn, 0.023 part of Sn, 0.03 part of Ni, 1 part of Zn, 0.8 part of Fe, 0.034 part of Pb, 0.001 part of Cd, 0.002 part of Ca, 0.0005 part of Nd, 0.0023 part of Dy, 0.0037 part of Pr, 0.0023 part of Er, 0.0075 part of Lu, 0.07 part of K, 0.12 part of Ba and 81.5 parts of Al.
A preparation method of a composite radiator aluminum alloy material comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-. Cu can improve the fluidity, tensile strength and hardness of the alloy, silicon is added to enable silicon and aluminum to form eutectic, the high-temperature fluidity of the alloy is improved, the shrinkage rate is reduced, the hot cracking tendency is avoided, iron is added, the die sticking phenomenon is greatly reduced when the content exceeds 0.8%, a zinc alloy ingot is added, the fluidity of zinc in the aluminum alloy can be improved, the corrosion resistance is reduced, a certain amount of rare earth element is added to refine crystal grains, harmful elements and gas are removed, the aluminum liquid is purified, the strength, plasticity and pressure resistance of the aluminum liquid are improved, all elements are fully melted, the temperature of the aluminum liquid reaches 740 and 750 ℃, a refining agent is added to remove harmful impurities in liquid aluminum, the harmful impurities can cause the increase of pores of a produced product, the aluminum liquid is kept stand for 15 minutes to enable all elements to be fully dissolved, the aluminum liquid is subjected to slag removal and standing for 15 minutes again when the temperature reaches 720-730 ℃, and obtaining the novel aluminum alloy material.
The refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
The invention has the following advantages and beneficial effects:
the composite aluminum alloy material for the radiator and the preparation method thereof are simple, can realize standardized, repeated and industrialized production, promote good fluidity and easy molding, reduced sticking and enhanced corrosion resistance of the aluminum alloy in the die casting of deep-cavity thin-wall parts in the radiator by optimizing the content of silicon, magnesium, iron, copper and zinc in the aluminum alloy, and add rare earth elements in the aluminum alloy to remove harmful elements and gases, purify aluminum liquid and improve the strength, plasticity and pressure resistance of the aluminum alloy.
In summary, the present invention has many advantages and practical values, and is not published or used in similar designs but is really innovative, and it has great technical progress and practical effect, and has industrial wide utilization value, and is a novel, advanced and practical new design.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1:
the composite aluminum alloy material for the radiator comprises the following components in parts by weight: 12.2-13.3 parts of Si, 2.6-2.8 parts of Cu, 0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.7-1.1 part of Zn, 0.8-0.95 part of Fe, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al. Silicon is a main element for improving the fluidity of liquid aluminum alloy, good fluidity can be obtained from eutectic to hypereutectic, but the silicon separated out after crystallization is thicker and larger, hard spots are easy to form, the elongation is reduced, and the machinability is poor; magnesium can improve the corrosion resistance of products and inhibit intergranular corrosion, and aluminum-magnesium alloy has good corrosion resistance, so ADC5 and ADC6 are corrosion-resistant alloys, but the solidification range is large, hot brittleness is easy to generate, cracks and looseness are generated in die castings, and the die castings are difficult to die-cast and mold. According to the technical scheme, proper magnesium is added into the high-silicon aluminum alloy, so that the corrosion resistance of the aluminum alloy is improved, the hot brittleness is not generated, the mold is not easy to demould when the iron content in the aluminum alloy is low, the service life of a mold is reduced, the mold sticking phenomenon is reduced along with the increase of the iron content, but the iron content is too high, a needle-shaped metal compound FeAl3 can be generated, although the pressure casting cooling speed is high, the precipitated crystals are fine, the performance is not greatly influenced, but the iron content is too highThe instantaneous cutter jump phenomenon can appear in the process of machining, and when the iron content is high, the fluidity of the alloy can be reduced, the quality of a casting is damaged, and the service life of a metal component in the die-casting equipment is shortened. The addition of a certain amount of copper into the aluminum alloy can obviously improve the strength and the hardness of the alloy, but the precipitation of an Al-Cu compound phase can shrink and expand after die-casting forming, so that the size of a casting is unstable, if zinc is contained as an impurity, the high-temperature brittleness is high, but the high-temperature brittleness and mercury form a strengthening phase HgZn2The technical scheme optimizes the contents of silicon, magnesium, iron, copper and the like in the aluminum alloy, so that the fluidity of the aluminum alloy is improved, the corrosion resistance is increased, a die is not stuck, and the strength, the plasticity and the die-casting performance of the aluminum alloy are not reduced.
A preparation method of a composite radiator aluminum alloy material comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-. Cu can improve the fluidity, tensile strength and hardness of the alloy, silicon is added to enable silicon and aluminum to form eutectic, the high-temperature fluidity of the alloy is improved, the shrinkage rate is reduced, the hot cracking tendency is avoided, iron is added, the die sticking phenomenon is greatly reduced when the content exceeds 0.8%, a zinc alloy ingot is added, the fluidity of zinc in the aluminum alloy can be improved, the corrosion resistance is reduced, a certain amount of rare earth element is added to refine crystal grains, harmful elements and gas are removed, the aluminum liquid is purified, the strength, plasticity and pressure resistance of the aluminum liquid are improved, all elements are fully melted, the temperature of the aluminum liquid reaches 740 and 750 ℃, a refining agent is added to remove harmful impurities in liquid aluminum, the harmful impurities can cause the increase of pores of a produced product, the aluminum liquid is kept stand for 15 minutes to enable all elements to be fully dissolved, the aluminum liquid is subjected to slag removal and standing for 15 minutes again when the temperature reaches 720-730 ℃, and obtaining the novel aluminum alloy material.
The refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
Example 2:
the composite aluminum alloy material for the radiator comprises the following components in parts by weight: 12.2 parts of Si, 2.6 parts of Cu, 0.4 part of Mg, 0.1 part of Mn, 0.01 part of Sn, 0.04 part of Ni, 0.7 part of Zn, 0.9 part of Fe, 0.04 part of Pb, 0.0012 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0004 part of Dy, 0.003 part of Pr, 0.0112 part of Er, 0.0009 part of Lu, 0.08 part of K, 0.15 part of Ba and 82 parts of Al.
A preparation method of a composite radiator aluminum alloy material comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0.4 parts of Mg, 0.1 part of Mn, 0.01 part of Sn, 0.04 part of Ni, 0.04 part of Pb, 0.0012 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0004 part of Dy, 0.003 part of Pr, 0.0112 part of Er, 0.0009 part of Lu, 0.08 part of K, 0.15 part of Ba and 82 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-. Cu can improve the fluidity, tensile strength and hardness of the alloy, silicon is added to enable silicon and aluminum to form eutectic, the high-temperature fluidity of the alloy is improved, the shrinkage rate is reduced, the hot cracking tendency is avoided, iron is added, the die sticking phenomenon is greatly reduced when the content exceeds 0.8%, a zinc alloy ingot is added, the fluidity of zinc in the aluminum alloy can be improved, the corrosion resistance is reduced, a certain amount of rare earth element is added to refine crystal grains, harmful elements and gas are removed, the aluminum liquid is purified, the strength, plasticity and pressure resistance of the aluminum liquid are improved, all elements are fully melted, the temperature of the aluminum liquid reaches 740 and 750 ℃, a refining agent is added to remove harmful impurities in liquid aluminum, the harmful impurities can cause the increase of pores of a produced product, the aluminum liquid is kept stand for 15 minutes to enable all elements to be fully dissolved, the aluminum liquid is subjected to slag removal and standing for 15 minutes again when the temperature reaches 720-730 ℃, and obtaining the novel aluminum alloy material.
The refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
Example 3:
the composite aluminum alloy material for the radiator comprises the following components in parts by weight: 13.3 parts of Si, 2.8 parts of Cu, 0.5 part of Mg, 0.25 part of Mn, 0.02 part of Sn, 0.05 part of Ni, 1.1 part of Zn, 0.95 part of Fe, 0.03 part of Pb, 0.0015 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0023 part of Dy, 0.001 part of Pr, 0.0115 part of Er, 0.0075 part of Lu, 0.1 part of K, 0.1 part of Ba and 87.6 parts of Al.
A preparation method of a composite radiator aluminum alloy material comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0.5 parts of Mg, 0.25 parts of Mn, 0.02 parts of Sn, 0.05 parts of Ni, 1.1 parts of Zn, 0.03 parts of Pb, 0.0015 parts of Cd, 0.002 parts of Ca, 0.0001 parts of Nd, 0.0023 parts of Dy, 0.001 parts of Pr, 0.0115 parts of Er, 0.0075 parts of Lu, 0.1 parts of K, 0.1 parts of Ba and 87.6 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-. Cu can improve the fluidity, tensile strength and hardness of the alloy, silicon is added to enable silicon and aluminum to form eutectic, the high-temperature fluidity of the alloy is improved, the shrinkage rate is reduced, the hot cracking tendency is avoided, iron is added, the die sticking phenomenon is greatly reduced when the content exceeds 0.8%, a zinc alloy ingot is added, the fluidity of zinc in the aluminum alloy can be improved, the corrosion resistance is reduced, a certain amount of rare earth element is added to refine crystal grains, harmful elements and gas are removed, the aluminum liquid is purified, the strength, plasticity and pressure resistance of the aluminum liquid are improved, all elements are fully melted, the temperature of the aluminum liquid reaches 740 and 750 ℃, a refining agent is added to remove harmful impurities in liquid aluminum, the harmful impurities can cause the increase of pores of a produced product, the aluminum liquid is kept stand for 15 minutes to enable all elements to be fully dissolved, the aluminum liquid is subjected to slag removal and standing for 15 minutes again when the temperature reaches 720-730 ℃, and obtaining the novel aluminum alloy material.
The refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
Example 4:
the composite aluminum alloy material for the radiator comprises the following components in parts by weight: 13 parts of Si, 2.7 parts of Cu, 0.45 part of Mg, 0.2 part of Mn, 0.023 part of Sn, 0.03 part of Ni, 1 part of Zn, 0.8 part of Fe, 0.034 part of Pb, 0.001 part of Cd, 0.002 part of Ca, 0.0005 part of Nd, 0.0023 part of Dy, 0.0037 part of Pr, 0.0023 part of Er, 0.0075 part of Lu, 0.07 part of K, 0.12 part of Ba and 81.5 parts of Al.
A preparation method of a composite radiator aluminum alloy material comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0.45 parts of Mg, 0.2 parts of Mn, 0.023 parts of Sn, 0.03 parts of Ni, 0.034 parts of Pb, 0.001 parts of Cd, 0.002 parts of Ca, 0.0005 parts of Nd, 0.0023 parts of Dy, 0.0037 parts of Pr, 0.0023 parts of Er, 0.0075 parts of Lu, 0.07 parts of K, 0.12 parts of Ba and 81.5 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-780 ℃, cleaning dross on the surface of the liquid aluminum, detecting the proportion of each element, adding 2.7 parts of Cu, 13 parts of Si, 0.8 part of Fe and 1 part of Zn, mixing, controlling the temperature at 740-750 ℃, adding a refining agent for removing slag and hydrogen for removing harmful impurities in the liquid aluminum, standing for 15-30 minutes to fully dissolve each element, filling hydrogen again when the temperature reaches 720-730 ℃, removing slag and standing for 15-30 minutes to obtain the novel aluminum alloy material. Cu can improve the fluidity, tensile strength and hardness of the alloy, silicon is added to enable silicon and aluminum to form eutectic, the high-temperature fluidity of the alloy is improved, the shrinkage rate is reduced, the hot cracking tendency is avoided, iron is added, the die sticking phenomenon is greatly reduced when the content exceeds 0.8%, a zinc alloy ingot is added, the fluidity of zinc in the aluminum alloy can be improved, the corrosion resistance is reduced, a certain amount of rare earth element is added to refine crystal grains, harmful elements and gas are removed, the aluminum liquid is purified, the strength, plasticity and pressure resistance of the aluminum liquid are improved, all elements are fully melted, the temperature of the aluminum liquid reaches 740 and 750 ℃, a refining agent is added to remove harmful impurities in liquid aluminum, the harmful impurities can cause the increase of pores of a produced product, the aluminum liquid is kept stand for 15 minutes to enable all elements to be fully dissolved, the aluminum liquid is subjected to slag removal and standing for 15 minutes again when the temperature reaches 720-730 ℃, and obtaining the novel aluminum alloy material.
The refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
Comparative example 1
The die-casting aluminum alloy for producing radiators at present is ADC12(ADC12 is Japanese aluminum alloy, also called 12 aluminum material, Al-Si-Cu alloy, is die-casting aluminum alloy, ADC12 is equivalent to Chinese alloy code YL113, alloy code YZAlSi11Cu3), and the content of each element is as follows: ADC12 contains the balance of aluminum (Al), 1.5-3.5% of copper (Cu), 9.6-12.0% of silicon (Si), less than or equal to 0.3% of magnesium (Mg), less than or equal to 1.0% of zinc (Zn), less than or equal to 1.3% of iron (Fe), less than or equal to 0.5% of manganese (Mn), less than or equal to 0.5% of nickel (Ni), less than or equal to 0.3% of tin (Sn), less than or equal to 200ppm of calcium (Ca), less than or equal to 0.1% of lead (Pb) and less than or equal to 0.005% of cadmium (Cd).
The tensile property, yield strength and elongation after fracture of the mechanical properties of the aluminum alloy materials prepared in examples 2 to 4 and comparative example 1 were measured, and the test results are shown in table 1. The mechanical properties mainly include tensile strength: the maximum nominal tensile stress that bears before the sample broke (tensile strength is the resistance that characterizes the maximum uniform plastic deformation of the material, and before the tensile sample bears the maximum tensile stress, the deformation is uniform and consistent, but after exceeding, the necking down phenomenon appears in the metal setups, produces concentrated deformation promptly), the elongation after breaking: the ratio of the elongation at break of the metal material to the original length is the elongation at break. It illustrates the maximum deformation range allowed when the metal material is damaged. Hardness: the deformation degree of the surface of the metal material when the surface of the metal material is pressed. The shore hardness, which is commonly used to describe the ability of a metal material to resist deformation from an external force, is included. Yield strength: the yield limit of the metal material at which the yield phenomenon occurs, i.e., the stress against a slight amount of plastic deformation.
TABLE 1
As can be seen from the physical and mechanical performance parameters in the table 1, the tensile strength of the aluminum alloy material is more than 333MPa, the elongation can reach more than 6.9 percent, and other yield strength and yield strength performances are also obviously superior to those of a comparative example. The invention obviously improves the physical and mechanical properties of the aluminum alloy material due to the synergistic effect in the formula.
Example 5:
the aluminum alloy material of the embodiment 2 is produced by a common radiator production process to obtain a radiator of a heating radiator.
The production process of the radiator comprises the following steps: (the qualified aluminum alloy material is added into a smelting furnace for natural gas melting, the melting temperature is stabilized at 730 ℃, the molten aluminum water is degassed and cleaned, and is put into an aluminum water bag, aluminum liquid is added into a heat preservation furnace, an automatic soup feeder takes materials from the heat preservation furnace, the materials are poured into a soup feeding port of a die casting machine, a steel pipe liner is put into a die cavity, die assembly, injection, ejection, part taking and forming are carried out, whether the ejection of a casting is balanced or not is checked, deformation, cold insulation and cracking exist, a blank is deburred, flat plate polishing and manual soft polishing are carried out, the outer edge of a thread and a side wing piece are positioned on a numerical control machine tool, pneumatic clamping is carried out, finish machining is carried out, the planeness of the end surface of the thread is 0.1, the verticality between the thread and the end surface is 0.15mm, the coaxiality of a pre-hole of the same end thread is 0.05, the planeness of the, screwing the connecting screw sleeve to fasten the end faces of the threaded holes of two adjacent workpieces, wherein the spacing between two adjacent workpieces is less than 0.8mm after the workpieces are compressed, the limit difference is plus or minus 1.5mm when the L of the overall dimension difference is less than 600mm, and the processing torque is not less than 190 nm; detecting air tightness, wherein the water level is higher than 50mm of the workpiece, introducing air with the pressure of more than 20 kg/square centimeter, and maintaining the pressure for 1 minute; polishing surface impurities and particles, wherein the surface is smooth and has no particles; hanging the film on an electrophoretic coating working line, and carrying out electrophoretic coating pretreatment; after two times of pure water washing, the obtained product enters a cathode electrophoresis pool to be subjected to electrophoresis; electrostatic powder spraying; and (6) inspecting and packaging. )
Example 6:
the aluminum alloy material of the embodiment 2 is produced by a common radiator production process to obtain a radiator of a heating radiator. The general heat sink production process was the same as in example 5.
Example 7:
the aluminum alloy material of the embodiment 3 is produced by a common radiator production process to obtain a radiator of a heating radiator. The general heat sink production process was the same as in example 5.
Comparative example 2:
the aluminum alloy material of the comparative example 1 is produced by a common radiator production process to obtain a radiator of the heating radiator. The general heat sink production process was the same as in example 5.
The performance and the condition during the production process of the radiators prepared in examples 5-7 and comparative example 2 were measured, and the test results are shown in Table 2.
As can be seen from the performance parameters in the table 2, the radiator single piece made of the aluminum alloy material has lighter weight, the heat dissipation capacity is more than 178W, the metal thermal strength of the product can reach more than 2.5W/kg.k, and the reject ratio in the die-casting forming process is far lower than that in the comparative example 2.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (6)
1. The composite aluminum alloy material for the radiator is characterized by comprising the following components in parts by weight: the composition comprises the following components in parts by weight: 12.2-13.3 parts of Si, 2.6-2.8 parts of Cu, 0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.7-1.1 part of Zn, 0.8-0.95 part of Fe, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al.
2. The aluminum alloy material for the composite radiator as claimed in claim 1, wherein: the composition comprises the following components in parts by weight: 12.2 parts of Si, 2.6 parts of Cu, 0.4 part of Mg, 0.1 part of Mn, 0.01 part of Sn, 0.04 part of Ni, 0.7 part of Zn, 0.9 part of Fe, 0.04 part of Pb, 0.0012 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0004 part of Dy, 0.003 part of Pr, 0.0112 part of Er, 0.0009 part of Lu, 0.08 part of K, 0.15 part of Ba and 82 parts of Al.
3. The aluminum alloy material for the composite radiator as claimed in claim 1, wherein: the composition comprises the following components in parts by weight: 13.3 parts of Si, 2.8 parts of Cu, 0.5 part of Mg, 0.25 part of Mn, 0.02 part of Sn, 0.05 part of Ni, 1.1 part of Zn, 0.95 part of Fe, 0.03 part of Pb, 0.0015 part of Cd, 0.002 part of Ca, 0.0001 part of Nd, 0.0023 part of Dy, 0.001 part of Pr, 0.0115 part of Er, 0.0075 part of Lu, 0.1 part of K, 0.1 part of Ba and 87.6 parts of Al.
4. The aluminum alloy material for the composite radiator as claimed in claim 1, wherein: the composition comprises the following components in parts by weight: 13 parts of Si, 2.7 parts of Cu, 0.45 part of Mg, 0.2 part of Mn, 0.023 part of Sn, 0.03 part of Ni, 1 part of Zn, 0.8 part of Fe, 0.034 part of Pb, 0.001 part of Cd, 0.002 part of Ca, 0.0005 part of Nd, 0.0023 part of Dy, 0.0037 part of Pr, 0.0023 part of Er, 0.0075 part of Lu, 0.07 part of K, 0.12 part of Ba and 81.5 parts of Al.
5. The preparation method of the aluminum alloy material for the composite radiator as claimed in claims 1-4, wherein the preparation method comprises the following steps: the method comprises the following steps:
the method comprises the following steps: casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass: 0.4-0.5 part of Mg, 0.1-0.25 part of Mn, 0.01-0.023 part of Sn, 0.03-0.05 part of Ni, 0.03-0.04 part of Pb, 0.001-0.0015 part of Cd, 0.001-0.002 part of Ca, 0.0001-0.0005 part of Nd, 0.0004-0.0023 part of Dy, 0.001-0.0037 part of Pr, 0.0023-0.0115 part of Er, 0.0009-0.0075 part of Lu, 0.07-0.1 part of K, 0.1-0.15 part of Ba and 81.5-87.6 parts of Al;
and step two, melting the aluminum alloy ingot prepared in the step one into liquid aluminum through a heat accumulating type centralized melting furnace, controlling the temperature at 760-.
6. The aluminum alloy material for the composite radiator as claimed in claim 1, wherein: the refining comprises primary refining and secondary refining, wherein the primary refining temperature is 740-750 ℃, and the secondary refining temperature is 720-730 ℃.
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| CN104357711A (en) * | 2014-10-17 | 2015-02-18 | 江阴新仁科技有限公司 | Heat-radiating aluminum foil for intelligent refrigerator and manufacturing method thereof |
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| CN111945039A (en) * | 2020-07-20 | 2020-11-17 | 深圳市日研铝业有限公司 | Die-casting aluminum alloy, aluminum alloy die-casting part and manufacturing method thereof |
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| CN104357711A (en) * | 2014-10-17 | 2015-02-18 | 江阴新仁科技有限公司 | Heat-radiating aluminum foil for intelligent refrigerator and manufacturing method thereof |
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| CN110408826A (en) * | 2018-04-28 | 2019-11-05 | 东莞市润华铝业有限公司 | A kind of aluminium alloy extrusions and preparation method thereof for radiator |
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