CN112501477A - Micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer and preparation method and application thereof - Google Patents
Micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer and preparation method and application thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
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- C21—METALLURGY OF IRON
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- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
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- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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- C21C7/06—Deoxidising, e.g. killing
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
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- C22C1/026—Alloys based on aluminium
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Abstract
The invention discloses a micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer, a preparation method and application thereof, and belongs to the technical field of metallurgy. The aluminum-magnesium-calcium alloy deoxidizer comprises the following chemical components in percentage by weight: 70-90% of Al, 1-10% of Mg, 5-25% of Ca, less than or equal to 0.02% of C, less than or equal to 0.02% of S, and the balance of inevitable impurities. The preparation method of the deoxidizer comprises the following steps: weighing pure aluminum ingots, metal magnesium and metal calcium according to chemical components of the aluminum-magnesium-calcium alloy deoxidizer, and adding the aluminum ingots, the metal magnesium and the metal calcium into a resistance melting furnace to be melted to prepare aluminum-magnesium-calcium alloy liquid; is poured into a continuous casting machine and passes throughCooling and forming to prepare the aluminum-magnesium-calcium alloy deoxidizer. The deoxidizer can deoxidize Al2O3All or most of the calcium aluminosilicate (7 Al) is converted into low melting point (1400℃)2O312CaO) on the surface of molten steel to thereby remove the CaO, thereby minimizing Al2O3Harmful effects, and remarkably improves the quality of steel.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer, a preparation method and application thereof.
Background
Since the twentieth century, the steelmaking process in China has changed fundamentally, and the subsequent processing is also extended, so that a complete process route of molten iron pretreatment → top-bottom combined blown converter steelmaking → LF, RH refining → continuous casting → hot rolling → cold rolling → zinc plating → coating is formed. Meanwhile, the proportion of deep drawing steel and ultra-deep drawing steel (such as automobile surface plate steel, container steel and the like) is also increasing.
At present, metal aluminum (or aluminum-iron alloy) is mainly used as a deoxidizer for smelting low-silicon and low-carbon aluminum killed steel used for producing thin cold-rolled deep-drawing products. As is well known, the deoxidation product Al of aluminium deoxidizers2O3There are two hazards: one is due to Al2O3The steel has high melting point (2050 ℃), is in a solid phase at the steelmaking temperature, has extremely poor mutual wettability, is difficult to agglomerate and grow, is difficult to float upwards and remove in molten steel, is easy to adhere to a water gap during continuous casting, forms nodules, causes the water gap to be blocked, and is extremely unfavorable for continuous casting; second, Al is formed in the steel2O3The inclusions are in a chain or string structure and have non-plasticity, so that the toughness of the steel is reduced, and the processability is influenced. Therefore, reduction of Al has been desired2O3Technical measures for the harmful effects of the deoxygenated product.
Because of the strong affinity of calcium and oxygen, CaO formed after the reaction of calcium and oxygen can react with Al as a deoxidized product of aluminum2O3Further forming a low melting point (1400 ℃) calcium aluminate. The latter is in liquid phase at steel-making temperature, has good mutual wettability, can be quickly coagulated, grown and floated to remove, thereby can reduce Al in steel2O3The phenomenon of nozzle nodulation during continuous casting is mingled and reduced. Based on these characteristics of calcium, the so-called calcium treatment technique of deoxidizing with aluminum and then feeding calcium in the later stage of refining is adopted to treat Al during the production of low-silicon and low-carbon aluminum killed steel2O3The inclusion is subjected to denaturation treatment. However, this is actually a "pollution-first and then treatment" method, which is cumbersome and uneconomical; meanwhile, because the time from the end of refining to casting is short, and sufficient floating time of inclusions cannot be ensured, the technology can reduce nozzle nodulation, but Al in steel2O3The amount of inclusions is difficult to reduce to the desired level.
In order to overcome the above-mentioned drawbacks of the calcium treatment techniques, the direct addition of calcium to the deoxidant has been soughtA new technology is provided. ZL200710012120.3 discloses a high-calcium silicon-aluminum-free calcium-magnesium-iron alloy for steelmaking deoxidization and a preparation method thereof. The alloy comprises (by weight) Ca 15-28%, Al 1-2: 1, Mg 2-6%, and Fe in balance. The preparation method comprises the steps of firstly preparing an aluminum-calcium intermediate alloy and an aluminum-magnesium intermediate alloy by using a low-frequency induction furnace, then melting an aluminum ingot and scrap steel scraps by using a power-frequency induction furnace, adding the aluminum-calcium intermediate alloy and the aluminum-magnesium intermediate alloy, smelting into an aluminum-calcium-magnesium-iron alloy liquid, and finally preparing an aluminum-calcium-magnesium-iron alloy finished product by using argon protection in the casting process. The preferable range of the alloy components is 18-25% of Ca, 1-1.3: 1 of Al and 2-4% of Mg, and the balance of Fe. According to the highest content value, the Ca content is 25%, the Al content is 32.5%, the Mg content is 4%, the highest content value of the main components Al + Ca + Mg is 61.5%, the minimum value of the Fe content is 38.5%, the maximum value of the Fe content is 60%, and the average value of the Fe content is about 50%. The part of Fe element contained in the alloy is obtained from scrap steel leftover materials added into an electric furnace, C, S contained in the part of scrap steel is a main factor causing the high content of C, S in the alloy, and the high content of C, S in the alloy has adverse effect on the quality of the steel. The main component content of the alloy is relatively low, that is, the deoxidation product Al cannot be reduced to the maximum2O3The harmful effects of (2) and (3) do not achieve the ideal deoxidation effect. Therefore, for smelting low-silicon and low-carbon aluminum killed steel, the method for reducing the deoxidation product Al to the maximum extent is explored2O3The micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer which has harmful influence is a problem to be solved urgently.
In addition, the preparation method of the alloy comprises the steps of firstly preparing the aluminum-calcium intermediate alloy and the aluminum-magnesium intermediate alloy by using a low-frequency induction furnace, and then smelting by using a power-frequency induction furnace process to prepare the finished product, wherein the smelting temperature is determined to reach about 1500 ℃ because the alloy contains about 50% of Fe, and the metal calcium and the metal magnesium are difficult to be melted into the alloy at the high smelting temperature, because the melting point of calcium is low (839 ℃), the boiling point is low (1450 ℃), and the density is small (1.54 g/cm)3) The metal magnesium has low melting point (651 ℃), and low density (1.74 g/cm)3) Most of the calcium and magnesium metals are not combined with the aluminum ingot fullyThe calcium and magnesium components can be floated, evaporated, volatilized and oxidized from the aluminum liquid in the smelting process, and are burnt out, so that the alloy with high calcium content cannot be obtained, although the method of preparing the intermediate alloy is adopted, the argon is protected in the casting process of the production process of the power frequency furnace, the burning loss of Ca and Mg is extremely difficult to control, the operation is complicated, two production processes of preparing the aluminum-calcium intermediate alloy and preparing the aluminum-magnesium intermediate alloy are added, the production cost is increased too much, even if the Ca and Mg are subjected to evaporation, volatilization and oxidation burning loss in the smelting process of the power frequency furnace, the consumption is large and reaches 5%, and the production cost is greatly increased. Therefore, the preparation method is difficult, uneconomical and unstable, and is not suitable for industrial mass production.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer, a preparation method and application thereof, wherein the deoxidizer can be used for deoxidizing a product Al by optimally designing the components of the aluminum-magnesium-calcium alloy2O3All or most of the calcium aluminosilicate (7 Al) is converted into low melting point (1400℃)2O3·12CaO) on the surface of molten steel to thereby remove the same, thereby minimizing Al2O3Harmful effects, and remarkably improves the quality of steel.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer comprises the following chemical components in percentage by weight:
70-90% of Al, 1-10% of Mg, 5-25% of Ca, less than or equal to 0.02% of C, less than or equal to 0.02% of S, and the balance of inevitable impurities. The content of impurity elements in the aluminum-magnesium-calcium alloy is less than 1.0 wt.%.
The preparation method of the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer is characterized by comprising the following steps of: the method comprises the following steps:
(1) adopting a 1000Kg aluminum alloy dumping type closed resistance melting furnace, taking a pure aluminum ingot, metal calcium and metal magnesium as raw materials, weighing the chemical components of the aluminum-magnesium-calcium alloy deoxidizer, and adding the aluminum-magnesium-calcium alloy deoxidizer into the resistance melting furnace to be melted to prepare aluminum-magnesium-calcium alloy liquid;
(2) pouring the aluminum-magnesium-calcium alloy liquid obtained in the step (1) into an aluminum block mold;
(3) and cooling the aluminum-magnesium-calcium alloy liquid in the die to form an aluminum-magnesium-calcium alloy block, thus preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer.
In the melting process of the step (1), the melting temperature is controlled to be 680-850 ℃, the melting time is controlled to be 2.5-3.5 hours, and in the whole melting process, a furnace mouth is sealed, so that the aluminum-magnesium-calcium alloy liquid is not contacted with air, and the oxidation burning loss phenomenon is avoided.
In the melting process in the step (1), the feeding sequence is that firstly, the pure aluminum ingot is completely melted, then, the metal calcium and the metal magnesium are added, after the pure aluminum ingot is completely melted, the aluminum magnesium calcium alloy liquid is stirred for 5min by using a graphite rod, and then, the mixture is kept stand for 1 min.
In the pouring process in the step (2), the pouring temperature is 680-780 ℃, and the pouring completion time of the aluminum-magnesium-calcium alloy liquid in each furnace is controlled to be 20-25 min.
And (2) in the casting process, an aluminum block continuous casting machine is adopted to cast the aluminum-magnesium-calcium alloy liquid, the aluminum-magnesium-calcium alloy liquid is uniformly injected into an aluminum block mold through a flow distribution plate, the aluminum-magnesium-calcium alloy block in the mold is subjected to water spraying cooling to be solidified and molded, and finally, the mechanical beating mode is adopted to demold.
The micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer prepared by the invention is applied to smelting low-silicon and low-carbon aluminum killed steel.
The design mechanism of the invention is as follows:
the components of the aluminum-magnesium-calcium alloy are changed to be free of Fe, namely, no iron raw material is used, C, S is avoided from the component design of the alloy, the Al content is increased to 70% or more, the main component content of Al + Mg + Ca reaches 99%, the content of C, S reaches trace and is less than 0.02%, and the quality of steel is improved.
In addition, magnesium is also an alkaline earth metal that is very susceptible to oxidation, and its deoxidizing power is inferior to that of calcium. The melting point is 651 ℃, the boiling point is 1107 ℃, and the carbon dioxide is very easy to vaporize in molten steel. The vaporization of magnesium can reduce the partial pressure of calcium in steel, namely can reduce the solubility of calcium in steel, promote the reaction of [ Ca ] + [ O ] → [ CaO ], and improve the deoxidizing capacity of calcium; similarly, the presence of calcium also reduces the partial pressure of magnesium in the steel, which reduces the solubility of magnesium in the steel and promotes the [ Mg ] + [ O ] → [ MgO ] reaction. Magnesium is added into the alloy, so that the overall deoxidation effect of the alloy can be further improved, and the alloy has a desulfurization effect. In addition, since the atomic radii of Ca and Mg are 2.23 and 1.72, which are both larger than the atomic radius of Fe, and are surfactant elements in ferrite, they are easily adsorbed on the metal surface to inhibit the growth of crystal grains, so that the magnesium and calcium remained in the iron matrix also have the function of refining the crystal grains.
Since the melting point of aluminum (660 ℃) is very close to that of calcium (839 ℃) and magnesium (651 ℃), but much lower than that of calcium and magnesium (1450 ℃ and 1107 ℃, respectively). Calcium and magnesium are not vaporized and lost after being melted with aluminum. In addition, the content of main components in the alloy is greatly improved, and the alloy can be used as a deoxidizer for smelting low-silicon and low-carbon aluminum killed steel, and can deoxidize a product Al2O3All or most of the calcium aluminosilicate (7 Al) is converted into low melting point (1400℃)2O3·12CaO) on the surface of molten steel to thereby remove the same, thereby minimizing Al2O3Harmful effects, and remarkably improves the quality of steel.
It is another object of the present invention to provide an advanced manufacturing process for producing the above-described alloys.
Since the invention does not contain Fe, the preparation method thereof is fundamentally changed. The original production technology is that the intermediate alloy is prepared by a low-frequency induction furnace and then the finished product is produced by smelting in a power-frequency induction furnace. The smelting temperature of a line-frequency induction furnace is 1500 ℃, which is determined by the characteristics of producing Fe-containing alloy, finished products can be produced only by reaching the temperature, the production process is also a production process commonly adopted in China at present, and the evaporation, volatilization, oxidation and burning loss of Ca and Mg are difficult to control at the smelting temperature of 1500 ℃. The invention adopts a domestic advanced 1000kg aluminum alloy pouring type closed resistance melting furnace, the melting temperature is 850 ℃, the melting temperature is very suitable for melting Ca (melting point 839 ℃) and Mg (melting point 651 ℃), in addition, in the whole melting process, the furnace mouth adopts closed treatment, so that the aluminum-magnesium-calcium alloy liquid is not contacted with air, and the oxidation burning loss phenomenon is avoided, therefore, the metal calcium and the metal magnesium added in the melting process are not vaporized, volatilized and are not oxidized and burnt loss, the yield of calcium is 100%, the yield of magnesium is 100%, the production cost is obviously reduced, the production process is convenient to operate, economic and smooth, the industrial batch production requirements are completely met, and the method is the optimal process for producing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy.
The invention has the following advantages and beneficial effects:
1. the invention changes the components of the existing aluminum-magnesium-calcium alloy, does not contain Fe element, ensures that C, S content in the alloy reaches trace, is less than or equal to 0.02 percent, and is beneficial to improving the quality of steel;
2. the aluminum-magnesium-calcium alloy has high aluminum content, the Al content is 70-90%, the content of the main components Al + Mg + Ca reaches 99% or more, the deoxidation effect is better, and the deoxidation product Al can be obtained2O3All or most of the calcium aluminate (7 Al) is converted into low melting point (1400℃)2O3·12CaO) from the molten steel, and maximally reducing Al2O3.The magnesium has a desulfurization effect, and the magnesium and the calcium have a grain refining effect, so that the quality of the steel is obviously improved;
3. the preparation method of the aluminum-magnesium-calcium alloy deoxidizer is advanced, a 1000kg aluminum alloy pouring type closed resistance melting furnace is adopted, the melting temperature is 850 ℃ at most, the temperature is very suitable for melting Ca (melting point 839 ℃) and Mg (melting point 651 ℃), in addition, in the whole melting process, the furnace mouth is subjected to closed treatment, so that the aluminum-magnesium-calcium alloy liquid is not contacted with air, and the oxidation burning loss phenomenon is avoided, therefore, metal calcium and metal magnesium added in the melting process are not vaporized, nonvolatile and oxidation burning loss, the yield of calcium is 100%, the yield of magnesium is 100%, the production cost is obviously reduced, the production process is convenient to operate, and the aluminum-magnesium-calcium alloy deoxidizer is economic and smooth, and is an optimal process for producing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer.
Detailed Description
For a further understanding of the present invention, the following description is given in conjunction with the examples which are set forth to illustrate, but are not to be construed to limit the present invention, features and advantages.
In the following examples, 1000kg of an aluminum alloy pour type closed resistance melting furnace (AL-Q-1000) and an aluminum block continuous casting machine (ALZ 5.5.5) were used to prepare a final deoxidizer.
Example 1:
the embodiment is a preparation method of a micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer, which comprises the following specific processes:
(1) adopting a 1000kg aluminum alloy dumping type closed resistance melting furnace, selecting pure aluminum ingots, metal calcium and metal magnesium according to the required proportion, selecting and weighing the materials, and adding the materials into the melting furnace to be melted to prepare aluminum magnesium calcium alloy liquid;
in the melting process, the melting temperature is controlled to be 680-850 ℃, the melting time is controlled to be 2.5-3.5 hours, and in the whole melting process, a furnace mouth is sealed, so that the aluminum-magnesium-calcium alloy liquid is not contacted with air, and the oxidation burning loss phenomenon is avoided;
in the melting process, the feeding sequence is that after all the pure aluminum ingots are melted, metal calcium and metal magnesium are added, after all the pure aluminum ingots are melted, the aluminum-magnesium-calcium alloy liquid is stirred for 5min by a graphite rod, then the mixture is kept stand for 1min, and the step (2) is carried out;
(2) pouring the aluminum-magnesium-calcium alloy liquid obtained in the step (3) by adopting an aluminum block continuous casting machine, uniformly injecting the aluminum-magnesium-calcium alloy liquid into an aluminum block mold through a flow distribution plate, controlling the pouring temperature to be 680-780 ℃, and controlling the pouring completion time of the aluminum-magnesium-calcium alloy liquid in each furnace to be 20-25 min;
(3) and (3) carrying out water spraying cooling on the aluminum-magnesium-calcium alloy block in the mould to solidify and form the aluminum-magnesium-calcium alloy block, and demoulding by adopting a mechanical beating mode to prepare the finished product of the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer.
Through detection, the chemical components (weight percentage) of the aluminum-magnesium-calcium alloy prepared by the embodiment are as follows: 85% of Al, 4% of Mg, 10% of Ca, 0.01% of C, 0.012% of S and the balance of impurities.
Example 2:
the difference from the embodiment is that: only the mixture ratio of aluminum, magnesium and calcium in the raw materials is different.
The finished product of the aluminum-magnesium-calcium alloy comprises the following chemical components in percentage by weight: 71% of Al, 3% of Mg, 25% of Ca, 0.011% of C, 0.013% of S and the balance of impurities.
Example 3:
the difference from the embodiment is that: only the mixture ratio of aluminum, magnesium and calcium in the raw materials is different.
The prepared aluminum-magnesium-calcium alloy comprises the following chemical components in percentage by weight: 88% of Al, 6% of Mg, 5% of Ca, 0.012% of C, 0.014% of S and the balance of impurities.
Example 4:
a steel mill used a low carbon, low sulfur, high aluminum, iron free aluminum magnesium aluminum calcium alloy prepared in example 1 as a deoxidizer to perform low carbon aluminum killed steel smelting and compared with the use of the existing aluminum iron deoxidizer (Al 50%) and calcium feeding line (Ca 50%), and the results are shown in Table 1 below.
TABLE 1
As can be seen from the table, compared with the deoxidation with AlFe, the deoxidation effect by applying the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy is good, the inclusion content in steel is obviously reduced, a nozzle is not nodulated, the residual aluminum in the steel is high, and the quality of the steel is obviously improved.
Claims (8)
1. A micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer is characterized in that: the aluminum-magnesium-calcium alloy deoxidizer comprises the following chemical components in percentage by weight:
70-90% of Al, 1-10% of Mg, 5-25% of Ca, less than or equal to 0.02% of C, less than or equal to 0.02% of S, and the balance of inevitable impurities.
2. The micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy of claim 1, which is characterized in that: the content of impurity elements in the aluminum-magnesium-calcium alloy is less than 1.0 wt.%.
3. The method for preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 1 is characterized in that: the method comprises the following steps:
(1) adopting a 1000Kg aluminum alloy dumping type closed resistance melting furnace, taking a pure aluminum ingot, metal calcium and metal magnesium as raw materials, weighing the chemical components of the aluminum-magnesium-calcium alloy deoxidizer, and adding the aluminum-magnesium-calcium alloy deoxidizer into the resistance melting furnace to be melted to prepare aluminum-magnesium-calcium alloy liquid;
(2) pouring the aluminum-magnesium-calcium alloy liquid obtained in the step (1) into an aluminum block mold;
(3) and cooling the aluminum-magnesium-calcium alloy liquid in the die to form an aluminum-magnesium-calcium alloy block, thus preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer.
4. The method for preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 3 is characterized in that: in the melting process of the step (1), the melting temperature is controlled to be 680-850 ℃, the melting time is controlled to be 2.5-3.5 hours, and in the whole melting process, a furnace mouth is sealed, so that the aluminum-magnesium-calcium alloy liquid is not contacted with air, and the oxidation burning loss phenomenon is avoided.
5. The method for preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 3 is characterized in that: in the melting process in the step (1), the feeding sequence is that firstly, the pure aluminum ingot is completely melted, then, the metal calcium and the metal magnesium are added, after the pure aluminum ingot is completely melted, the aluminum magnesium calcium alloy liquid is stirred for 5min by using a graphite rod, and then, the mixture is kept stand for 1 min.
6. The method for preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 3 is characterized in that: in the pouring process in the step (2), the pouring temperature is 680-780 ℃, and the pouring completion time of the aluminum-magnesium-calcium alloy liquid in each furnace is controlled to be 20-25 min.
7. The method for preparing the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 3 is characterized in that: and (2) in the casting process, an aluminum block continuous casting machine is adopted to cast the aluminum-magnesium-calcium alloy liquid, the aluminum-magnesium-calcium alloy liquid is uniformly injected into an aluminum block mold through a flow distribution plate, the aluminum-magnesium-calcium alloy block in the mold is subjected to water spraying cooling to be solidified and formed, finally, the aluminum-magnesium-calcium alloy deoxidizer is prepared by adopting a mechanical beating mode to demould, and the aluminum-magnesium-calcium alloy deoxidizer is prepared after demould.
8. The application of the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer according to claim 1 is characterized in that: the micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer is applied to smelting low-silicon or low-carbon aluminum killed steel.
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| CN114318084A (en) * | 2021-12-24 | 2022-04-12 | 陇西西北铝九鼎粉材有限公司 | Aluminum-magnesium-calcium alloy powder and preparation method and application thereof |
| CN116287554A (en) * | 2023-02-16 | 2023-06-23 | 马鞍山市九鹏嘉腾机械实业有限公司 | Silicon-calcium aluminum alloy and production process thereof |
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