Current status and development of aluminum melt online refining and purification equipment

Improving the purity of aluminum melt and the metallurgical quality of ingots have always been the goals pursued by aluminum processing workers, and the aluminum melt degassing and purification device is the equipment guarantee for improving the purity of the melt.

During the smelting process of aluminum and its alloys, the inclusions and gases present in the aluminum melt will affect the purity of the melt, causing the ingot to easily produce bubbles, pores, inclusions, looseness, cracks, and other defects, which will hurt the performance of the casting or the ingot. The strength, plasticity, fatigue, corrosion resistance, anodizing properties, and appearance quality of subsequent processed products have a significant impact.

The presence of inclusions will increase the viscosity of the aluminum melt, reduce the casting performance of the aluminum alloy, and promote the formation of porosity.

There is an interaction between inclusions and hydrogen in the aluminum melt. The presence of inclusions makes it difficult to remove the hydrogen in the aluminum melt. Only by removing the inclusions in the aluminum melt can the hydrogen content in the aluminum melt be reduced. to a lower level.

The melt purification principles of "prevention first and discharge as a supplement" and "degassing first and slag removal" have become the consensus of the aluminum processing industry. The gas content of aluminum melt is closely related to the cleanliness of aluminum alloy raw and auxiliary materials, alloy chemical composition, melt temperature, and air humidity, and the suction and exhaust of high-temperature aluminum melt is a dynamic competitive balance. At present, the bubble flotation method and melt filtration are the main methods for degassing and purifying aluminum melt.

According to the characteristics of aluminum melt suction and exhaust, a composite purification device using online rotating nozzle air blowing and refining of the melt and online ceramic foam filter filtration or high interfacial energy particle adsorption and slag removal is the basis for producing high-quality aluminum alloy ingots. configuration.

The rotating nozzle blowing method uses a rotating nozzle to inject high-purity inert gas or gas + flux from the bottom of the aluminum alloy melt. The rapid rotation of the rotating nozzle can make the bubbles evenly distributed and dispersed, and float to the surface along a spiral route, thereby achieving removal. Purpose of Hydrogen in Melt. The SNIF method of the American Union Carbide Company, the RID method of the American Hitchcock Company, the ALPUR method of the French Pisigne Company, the series of equipment for the rotary spray flux method developed by the RDU of the British Foseco Company, and the series of equipment researched and developed by the Process Research Department of the Italian Aluminum Company ALUDEF, etc. are all rotating nozzle blowing devices.

The development of online aluminum alloy melt processing equipment in China started late. According to incomplete statistics, at present, the online purification system outside the aluminum alloy furnace consists of two parts: degassing and filtration: 99% of the refining and degassing is performed by the rotating rotor, more than 95% of the filtration part is made of CFF foam ceramic filter plates, and 2% is made of oxidation Aluminum ball deep bed filtration or <1% is performed by tubular filtration.

In the actual production process, most companies not only use online degassing equipment but also use foam ceramic filters. After years of technological improvements, the degassing effect of these Chinese-made devices has gradually improved, but the short service life of the graphite rotor and heating sleeve is a common problem.

1 Typical foreign online purification devices

The online refining and degassing of aluminum alloy can be roughly divided into gas blowing method, vacuum refining method, and ultrasonic refining method. At present, most of the online refining and degassing devices used in industrial production are box-type rotating degassers using the gas-blowing method (floating method). The principle of refining and degassing is: that after inert gas is blown into the aluminum liquid, many small bubbles are formed. The initial pressure of hydrogen in the bubbles is zero. There is a pressure difference of hydrogen at the interface between the bubbles and the aluminum liquid, making it dissolve in the aluminum liquid. The hydrogen in the aluminum is continuously sucked into the bubbles, and this sucking process will not stop until the pressure of the hydrogen in the bubbles is equal to the pressure of the hydrogen in the aluminum liquid.

After the bubbles surface, the hydrogen in the bubbles escapes into the atmosphere. In addition, when the bubbles float from the melt, they meet the oxide inclusions in the melt and adsorb them on the surface of the bubbles. They are removed as the bubbles float to the surface of the melt. Early aluminum melt refining removal Generally, a drilled iron straight pipe or "T"-shaped pipe is inserted into the aluminum melt of the smelting furnace or holding furnace, and then inert gas, mixed gas, inert gas + flux, etc. are introduced into the pipe for refining and degassing.

However, this form of degassing efficiency is low and can easily cause secondary pollution of the melt;

At the same time, the furnace door must be opened for refining in the furnace, resulting in large heat loss, rapid melt temperature drop, and high labor intensity for the operator, which seriously affects product quality and process continuity. Compared with in-furnace refining and degassing, the currently commonly used online refining and degassing has the advantages of high refining and purification efficiency, less melt pollution, and low worker labor intensity. It can be matched with current semi-continuous DC casting and continuous casting to achieve casting Continuity and automation of production.

(1) SNIF melt purification device.

The SNIF method (rotating nozzle inert gas flotation method) developed by Union Carbide Company of the United States is equipped with two graphite gas rotating nozzles. The gas passes through the nozzle's rotor to form fine and dispersed small bubbles. At the same time, the melt is stirred by the rotor. , make the bubbles evenly dispersed throughout the melt, increase the contact area between the gas and the liquid, extend the movement distance and residence time of the bubbles in the aluminum liquid, increase the gas volume, adsorb gas and oxidation in the melt The inclusions float to the surface of the melt, thereby achieving the purification effect of degassing and impurity removal. The hydrogen removal efficiency of this method

Approximately 3 times that of the single-tube injection method. The hydrogen content of the melt after single-tube injection treatment is approximately 0.2 mL/100 mg ? Al, while the hydrogen content of the melt after purification treatment by the SNIF method can reach less than 0.08 mL/100 mg ? Al.

The SNIF rotating head online processing device has its characteristics. Unlike other rotating nozzle systems, the rotor is in contact with the melt, which can avoid eddy currents on the surface. The good thermal insulation of the treatment box can keep the aluminum liquid solidified for up to 1 hour, ensuring that when the aluminum liquid solidifies between two casting batches, the aluminum liquid in the treatment box can be completely discharged.

This advantage is even more apparent when alloys are frequently changed. SNIF's modern equipment improves the sealing of the cover, reduces the entry of oxidation, keeps the hydrogen content in the aluminum liquid below 1%, and increases the service life of the graphite nozzles and bearings.

SNIF's online refining degassing treatment box includes both a clean room and a heated insulation room. There are two inner chambers, separated by SiC partitions in the middle, and the bottoms of the two chambers are connected. After the melt is degassed and slag removed in the purification chamber, it flows into the insulation chamber from below the partition and is kept warm.

The insulation chamber is made of U-shaped silicon carbon. The rod-coated silicon carbide protective tube is immersed in the melt to heat it. The outer shell of the box is made of a 10 mm steel plate, and the lining is integrally cast with refractory materials.

There is an observation port and a slag removal port on the upper part of the side wall, and a slag removal port at the bottom. The front and rear of the treatment box are connected into an independent inner cavity, which facilitates direct conduction of the heater and underflow transportation of the treated melt. The rotating nozzle of SNIF is made of high-purity graphite. In addition to being able to break up bubbles, its structure should also use the centrifugal force generated by stirring the melt to cause the melt to enter the nozzle and mix evenly with the horizontally ejected gas to form a gas/ The liquid flow is ejected to increase the contact area and contact time between bubbles and melt, thereby improving the degassing and purification effect.

The rotation speed of the graphite rotor can be controlled by a frequency converter, up to 400 r/min. The graphite rotor specifications are ? 150~250 mm, and the impeller specifications are ? 250~350 mm. The high-purity anti-oxidation graphite rotor has the characteristics of high strength, high-temperature resistance, corrosion resistance, and erosion resistance of liquid aluminum.

(2) ALPUR melt purification device.

ALPUR is a patented product of the French Pisigny Industrial Company. It is a continuous melt purification treatment device outside the furnace developed in 1981 that uses a rotating nozzle to generate tiny bubbles. The ALPUR unit is a dual-heater, dual-rotor gas refining unit that is highly efficient in removing gases, inclusions, and alkali metals from aluminum melts. Its equipment includes a degassing container, a top cover lifting system, a gas circuit, a rotor and motor drive system, a heater, electrical equipment, and a human-machine interface. ALPUR online equipment is installed on the production line between the holding furnace and the casting machine and has both heating and processing functions. Heating is to preheat the container before filling it with molten aluminum through a heater installed on the container cover. It can not only maintain the metal temperature between castings according to the temperature set by the operator but also increase the temperature during the casting process; processing

It is to remove some impurities (hydrogen, alkaline metals, slag inclusions) contained in the molten aluminum liquid coming from the outlet of the holding furnace through ALPUR online processing. The treatment process used by this device is based on the principle of gas flotation. The rotor injects and evenly disperses inert gas or a mixture of inert gas and chlorine to form tiny bubbles. When the bubbles rise through the melt, the hydrogen in them is adsorbed into the bubbles, and eventually floats to the surface and is removed; alkali metals react chemically with chlorine to form chlorides and are eliminated; slag inclusions are captured by the bubbles, and larger slag inclusions Collisions with bubbles are captured, smaller ones are captured through the bubble radial cross-section, and then

As the bubbles rise to the surface of the melt, they form dross and are removed.

(3) LARS melt purification device.

The LARS melt purification system is a new aluminum refining system successfully developed by the American ALMEX company in the mid-1990s. It also uses rotating graphite nozzles to disperse the refining gas into fine bubbles in the melt, ultimately removing the aluminum melt. The purpose of hydrogen and oxide inclusions.

Different from the previous rotating graphite nozzle refining system, the LARS system has an ingenious concept and unique structure and has better hydrogen and impurity removal effects.

The hydrogen removal rate can reach more than 75%, and 99% of inclusions with a particle size greater than 20 μm can be removed. The hydrogen removal rate of previous rotary graphite nozzle degassing methods (such as SNIF, ALPUR, etc.) does not exceed 70%. The LARS melt purification system consists of a melting furnace, LAPS refining system, aluminum liquid filtration system, and direct cooling casting system. The LARS refining system replaces the previous static furnace and mainly consists of two clean rooms, heating and gas supply systems, and related control devices. The clean room mainly consists of a shell and a rotating graphite nozzle system. The right side is the first clean room, and the left side is the second clean room. The purified aluminum melt flows into the ladle through an undercurrent. The rear of the LARS system is equipped with 40 PPI and 50 PPI foam ceramic filters. In addition to the rotation drive motor control system, the rotating graphite nozzle system consists of a graphite jacket, a rotating shaft, and a graphite nozzle. What makes it different from previous rotating graphite nozzle devices is that there are many spiral grooves processed on the surface of the rotating shaft, which forms a spiral channel for transporting purification gas with the outer jacket. The LARS system adopts three unique technologies including inert gas online preheating, friction stirring of the aluminum melt by the inert gas, and prevention of bubble aggregation. It has been patented and can effectively eliminate physical, metallurgical, and chemical problems in the aluminum melt. impurities, achieving the purpose of purifying the aluminum melt. All aluminum products processed by the LARS purification system can meet the requirements of the Class A standard for ultrasonic flaw detection, and in most cases can also meet the requirements of the US Mil-2154 Class AA standard.

(4) Other aluminum melt purification devices:

①FILD melt purification method.

Also known as the smokeless online degassing method, it was jointly developed by the British Aluminum Company (BACO) and the Swiss Gauts Electric Furnace Company. Its working principle is to divide the square crucible with a sealing heating device into upper and lower layers using partitions, and alumina pellets with purifiers are installed in the partitions. When the melt passes through the upper partition, nitrogen, and solid powder flux are blown in for gas-solid double purification. At the same time, the melt will also be filtered when it flows through the alumina balls. This method has no pollution to the environment, increases the metal yield by 0.2%, and reduces the burning loss of raw materials during smelting.

②RDU melt purification.

The RDU rapid degassing device is a patented product of the British FOSECO company. It also uses a graphite rotor to rotate and blow out tiny bubbles, which increases the uniformity of gas-liquid mixing and improves the purification effect of the aluminum alloy melt. The medium used is 95%Ar+5%Cl2, which can remove alkaline earth metals.

③GBF melt purification.

The GBF bubble flow filtration method was developed by the Japanese company FOSECO. It uses a special rotating nozzle with a rotation speed of 700 r/min to produce ultra-fine bubbles of ? 1 to 4 mm. It uses a small amount of air, which is equivalent to 30% of the amount of air used by other degassing methods. 50%, only uses Ar gas, no pollution to the environment. The clean room is made of SiC-Si3N4 material, which is non-stick to aluminum, corrosion-resistant, and has a service life of 2 to 3 years. The clean room is equipped with a damping device. During operation, the liquid aluminum level is stable and the amount of slag is small.

④MINT melt purification.

The full name of MINT is a continuous online processing device outside the melt furnace, invented by the United Aluminum Company of the United States. The degassing and purification chamber is conical in shape and has no rotating parts. There are several small gas injection holes at the bottom of the conical working chamber. Using a small amount of chlorine, the degassing effect is good.

2 Typical online purification devices and development in China

In aluminum and aluminum alloy products, melt purification is a key technology to ensure the metallurgical quality of aluminum and aluminum alloy materials. The purpose of aluminum alloy melt purification is mainly to reduce the hydrogen content and oxidized inclusion content in the melt. Hydrogen and oxidized inclusions in the alloy destroy the continuity of the aluminum matrix, which will greatly reduce the mechanical properties, fatigue properties, fracture toughness, corrosion resistance, etc. of the alloy.

Since the late 1980s, China has successively introduced aluminum melt online purification equipment such as SNIF, Alpur, MINT, and FDU. This equipment can be divided into two categories, one is the rotating nozzle type represented by SNIF and Alpur, and the other is the fixed nozzle type represented by MINT and DMC. Production practice in the past 10 years shows that the rotating nozzle type has higher purification efficiency. Improving the purity of aluminum alloy melt and improving the metallurgical quality of aluminum alloy ingots are the goals that have been pursued in the production of high-performance aluminum alloy processing products. To this end, Chinese aluminum processing enterprises, universities, scientific research institutes, and other units, combined with market demand and application practice, have carried out mechanism research and equipment design and development for online refining, degassing, and purification of aluminum melt.

(1) DFU aluminum melt purification device.

Based on digesting and absorbing MINT, SAMRU, DDF, and DFU devices have been developed successively. The DFU aluminum melt purification device uses the principle of partial pressure difference degassing and adopts the composite gas rotating nozzle method combined with Ar-CCl4 to refine the melt. At the same time, it assists the composite purification process combined with alumina ceramic foam filter filtration to purify the aluminum melt. The body is degassed and the slag is removed. At the same time, purified exhaust gas is used as a protective gas to tightly seal the melt surface to prevent external air from being sucked in and prevent re-contamination of the melt. The DFU aluminum melt purification device is mainly composed of a degassing filter box, a lifting mechanism, and a control system. The degassing unit is divided into a degassing area and a resting area by thermally conductive partitions. The internal immersion heater is placed in the degassing area and has high thermal efficiency;

Thermal conductive partitions can not only conduct metal flow but also use their good thermal conductivity to insulate the metal melt in the resting area. After the metal enters the degassing area from the inlet, when it flows from top to bottom, the spirally floating bubbles ejected from the bottom to top flow in the reverse direction, which is beneficial to the renewal of the gas-liquid interface and improves the degassing efficiency. At the same time, the upper part of the degassing area can be automatically closed, which can effectively prevent the entry of outside air. There are slag cleaning ports at the top and bottom of the DFU purification device, which not only ensures that the scum on the melt surface can be cleaned between each casting but also allows all residues in the device to be easily cleaned out when the device is drained. The matching filter box has a heating and heat preservation function, which can heat or heat the metal melt during casting or non-casting, and the filter plate can be preheated directly with an electric heating system before casting. DUF purification device has strong degassing ability.

It has high degassing efficiency, simple operation, and convenient maintenance, which reduces labor intensity and production costs.

(2) Degassing, filtration and composite purification device.

This composite purification device uses rotating graphite nozzles for refining and degassing and foam ceramic plate filtration to jointly purify the aluminum melt, ultimately achieving the purpose of removing hydrogen and oxide inclusions in the melt. The degassing purification box consists of two parts: a degassing chamber and a filter chamber. The degassing chamber is equipped with a graphite shaft rotor that injects inert gas. It has step-less speed regulation and a normal operating speed of 200 to 500 r/min. The graphite rotating shaft is lifted by a hydraulic device outside the box and can freely rotate 180° for easy maintenance. The degassing chamber has reasonable slag-cleaning holes and discharge holes.

The filter box is equipped with a two-stage foam ceramic filter as the filter medium, with a discharge port underneath.

The box relies on multiple silicon carbon rods evenly distributed on the cover for radiation compensation heating, degassing, and purification. The structure of the box has the following characteristics:

①The inner cavity of the box can ensure that the flow route of the aluminum liquid is as follows: aluminum liquid inlet - the intersection of the aluminum liquid level and the graphite rotating shaft - graphite rotor - aluminum liquid outlet. A good purification effect can only be achieved if the contact area between the aluminum liquid and the bubbles is large and the contact time is long;

② To ensure that the box always maintains a slight positive pressure during the purification operation and to prevent outside air and water vapor from entering the box, the aluminum inlet and outlet are designed in a sloped shape so that the upper edge of the inner part of the box is the same height or slightly lower At the lower edge of the outer port, the aluminum liquid is always in a sealed state in the degassing box, reducing contact with outside air and avoiding further reaction with water vapor;

The working volume of the degassing chamber and filter chamber should be reasonable, and the remaining aluminum liquid channels should be kept to a minimum volume to minimize the amount of aluminum liquid between different castings.

release flow;

The structure of the cavity inside the box is reasonable, and the formwork combination for castable construction is easy to disassemble and assemble.

(3) FAPR technology purification device.

In-furnace rotating powder spraying and mixing machine. The flux addition, inert gas introduction, and alloying stirring are integrated into one machine and are completed in one go by the mechanical action of a machine. This device greatly improves working conditions, significantly shortens operating time, and improves production efficiency. This new type of purification device has a simple structure, is convenient and easy to use, has the dual functions of powder spraying and stirring, and is not restricted by the degree of freedom when working in the furnace. The special pump stirring head promotes forced convection of the melt under the aluminum liquid surface and sprays a small amount of flux from its center to fully stir the aluminum melt so that the alloy chemical composition and melt temperature are quickly and evenly distributed. This device achieves the goals of high efficiency in degassing and slag removal in the furnace and fast melt purification speed. It is currently the most ideal process equipment for furnace purification. The equipment can be designed as a furnace wall side-mounted or mobile type. When used to remove alkali metals from electrolytic aluminum liquid, it can be designed as a vertical lifting type. It has the characteristics of high spray stirring efficiency and a direct high-concentration ratio of flux and metal. It can be used at high Efficiently to eliminate the sodium content in the aluminum transfer package and solve the long-term problem of low purity of electrolytic aluminum liquid.

(5) Other aluminum melt purification devices:

① Furnace bottom breathable brick technology.

The furnace bottom breathable brick melt purification technology can avoid flux purification pollution and enable aluminum alloy smelting to meet true green requirements. Using breathable bricks to blow in dispersed inert gas can form an interface barrier layer enriched with an inert atmosphere at the interface between furnace gas and aluminum liquid, preventing the oxidation and outgassing of the aluminum melt, and reducing the burning loss of aluminum. At the same time, the blowing of inert gas increases the mass transfer and heat transfer of the aluminum melt, improves the melting efficiency, and achieves the alloying stirring effect. In the process of floating upward, the blown inert gas can adsorb and bring out impurities suspended in the aluminum melt. It also brings out large inclusions from the bottom of the furnace and the melt, reducing slagging on the hearth and corners of the furnace. , thereby not only improving the cleanliness of the melt but also ensuring the cleanliness of the hearth.

Breathable bricks are composed of breathable brick core (breathable work brick, breathable safety brick, breathable chamber, gas sealing cover), seat brick, air duct, shell, etc. The non-oxide, sintered microporous ceramic core with the strongest non-stick properties to aluminum is selected to produce composite breathable bricks. A bed of dispersed small bubbles is obtained through pulse air blowing to reduce the disadvantages of "blistering". The breathable bricks are installed in the furnace and designed in a plum blossom pile distribution pattern. The advantages of such distribution are:

(a) Use gas wave-making stirring to enhance horizontal mass transfer movement and promote diffusion movement of solute components;

(b) There is mass transfer movement in the reverse gravity field to overcome the segregation of chemical components caused by specific gravity;

(c) There is a reverse temperature field mass transfer movement, which can solve the temperature difference between the upper and lower layers and the segregation of chemical components caused by the temperature field, promote uniform alloy melt composition and temperature, and effectively solve the problem of melt uniformity.

②Aluminum melt composite purification technology.

The aluminum melt composite purification system consists of a diversion device, a filter purification device, a gas medium purification device, a purification chamber, a discharge device, and a furnace support device. The composite purification system can be applied to the regeneration and recovery of aluminum, which can completely remove non-metallic inclusions with a size of more than 10 μm, and reduce the hydrogen content in aluminum alloys to less than 0.08 mL/100 g ? Al.

③Ultrasonic treatment.

Ultrasonic treatment is a new type of purification method. Its principle is: that when elastic waves are introduced into the aluminum melt, the liquid and molecules are affected by the periodic alternating sound field, and many microscopic "cavities" are generated inside the aluminum melt. , these holes continuously absorb the hydrogen in the aluminum melt, turning it into the core of the bubbles and growing into hydrogen bubbles one after another, escaping from the surface of the aluminum liquid, thereby achieving the purpose of purifying the aluminum liquid. The use of ultrasonic purification treatment can not only remove gases and impurities, but also vibrate dendrites to become crystal cores, improve the nucleation rate in supercooled aluminum alloy liquid, and thereby refine the grains.

④Vacuum degassing and purification.

The vacuum degassing method is divided into static vacuum purification treatment and dynamic vacuum purification treatment. It places the aluminum liquid in a closed vacuum chamber and utilizes the fact that the suction tendency of the aluminum melt in the vacuum tends to zero and hydrogen has a strong tendency to precipitate. The principle is to let the gas and non-metallic inclusions in the aluminum melt stand at a certain temperature to precipitate and float to the surface of the aluminum liquid for removal.

Advantages of vacuum degassing:

(a) Will not pollute the alloy liquid;

(b) Can be purified after deterioration without destroying the deterioration effect of sodium;

(c) Avoid secondary chlorine absorption and oxidation during the deterioration process;

(d) The pinhole rate is significantly reduced and the mechanical properties are significantly improved, etc.

From the perspective of purification effect and environmental protection, vacuum refining is a promising purification method.

The vacuum degassing method also has some disadvantages:

(a) The melt temperature will drop and it will be difficult to meet the pouring temperature requirements;

(b) When the depth of the aluminum liquid is too large, the degassing effect is reduced;

(c) A set of sealing equipment is required and is expensive;

(d) Smelting, pouring, and maintenance technologies are high and production efficiency is low.

Therefore, it has not been widely used in industrial production.

⑤Electromagnetic purification.

The electromagnetic purification process is a novel melt purification process that separates and removes inclusions through the difference in conductivity between the inclusions and the aluminum melt. The electromagnetic force has very little effect on non-metallic oxide inclusions with poor electrical conductivity or non-conductivity, and only affects the metal liquid, thus creating a pressure gradient in the aluminum melt. This pressure gradient affects the oxidized inclusions, causing them to move in the opposite direction to the force direction of the molten metal. The electromagnetic purification process is based on this principle to achieve the effect of removing oxidized inclusions. Depending on the way the electromagnetic field is generated, there are traveling wave magnetic fields, alternating magnetic fields, alternating magnetic fields, rotating magnetic fields and electromagnetic stirring, direct current electric fields, orthogonal steady magnetic fields, high-frequency magnetic fields super strong magnetic fields, etc. This makes the method of electromagnetic purification a lot of. The electromagnetic purification process is still in the experimental stage of exploration and has not yet been used in industrial production.

3 Summary

Generally speaking, China's foreign melt purification process includes in-furnace purification and outside-furnace purification, which are divided into adsorption purification, non-adsorption purification, and filtration purification according to different purification mechanisms. With the development of technology, the degassing and slag removal purification processes are separated. The traditional process of degassing without slag removal and slag removal without degassing can no longer meet the requirements of the development of high-precision aerospace and military industries. It has become the main development trend to combine degassing and slag removal to achieve better purification effects by taking into account both degassing and slag removal. The development direction of China's aluminum alloy melt purification is based on independent innovation and the development of high-efficiency aluminum alloy melt purification with independent intellectual property rights.

Chemical technology and supporting purification equipment and facilities;

In terms of aluminum alloy metallurgical quality control, strengthen basic research and investment in high-performance aluminum alloy materials, form an advanced set of preparation technologies, including aluminum alloy melt purification technology, meet and support the needs of the Chinese aviation market and civil market, and improve aluminum materials. Product quality, achieving high-quality and rapid development of high-performance aluminum materials.