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About LiMLiM Laser is committed to providing global customers with advanced additive manufacturing equipment, supporting auxiliary equipment and 3D printing services.
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ProductsRadium Laser has independently developed LiM-X series of selective laser melting equipment, LiM-S series of coaxial powder feeding equipment, LiM-R series of laser cladding equipment and customized equipment for special industries.
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Help the high quality and efficient production of air and sky parts, and fully demonstrate the LiM power of pursuing dreams
Author：
Time：2024-11-18
On November 12, the 15-day China Airshow opened in Zhuhai, Guangdong province, and TSC, the parent company, brought overall solutions and innovations for metal 3D printing.
Aerospace is a strategic field to promote national defense construction, scientific and technological innovation and economic and social development, and has a strong role in improving the upstream and downstream industrial systems, and promoting the construction, extension, reinforcement and strengthening of the industrial chain. Metal 3D printing, as one of the innovative technologies of industrial machines, has been deeply applied in the aerospace manufacturing industry.
Aerospace products are mostly required to serve under extreme conditions, showing a high degree of integration and integration characteristics: a wide variety of components and interconnections, emphasizing the overall coordination; Material selection, processing accuracy, performance requirements are different; Highlighting large-scale, lightweight, etc., which also causes aerospace parts design difficulty, high manufacturing costs, long production cycle, and slow iteration speed. However, the popularity of metal 3D printing technology eliminates the need for open mold manufacturing, directly forms large-size, high-precision, high-performance key parts, shortens the trial-production verification cycle, accelerates the research and development process, and further promotes the development of advanced manufacturing technology in the field of space. LiM Laser is deeply engaged in metal 3D printing technology and integrates practical experience to provide overall metal 3D printing solutions for high-end manufacturing industries represented by aerospace, so as to achieve mass production quickly and efficiently.
Large size complex structural parts manufacturing
Taking the cascade ring, a key component of an aerospace engine printed by LiM Laser, as an example, with a diameter of 1470mm and a composite impeller structure as a whole, the number of blades is large and thin, which is difficult to process. Using laser selective melting technology, the large size complex parts are formed in one body, the finished product surface is dense without defects, the connection structure has no solder joints, the whole is uniform, and the performance is excellent. The material is superalloy (GH3625) to ensure its normal operation in high temperature, high pressure and high speed air flow. The outer surface is covered with reinforcing bars to increase the mechanical properties of the structure such as strength and stiffness. Using LIM-X1500HF flight printing equipment, 20 Laser prints were manufactured in 240h, demonstrating LiM Laser's high quality and efficient production capability for large-size aerospace components.
Cascade ring
The thrust chamber, an important component of space engines, uses laser selective melting technology to achieve lightweight design and reduce weight to 600kg. The diameter of the part is 589mm, the overall height is 1357mm, and it only takes 360h to print; Integrated shape, the internal flow path structure design is more free, manufacturing more accurate; No solder joints on the surface, high finish, reliable strength; External texture fit application requirements, high process stability. This part fully demonstrates LiM Laser's experience and ability in forming large sizes, especially ultra-high size complex parts.
Thrust chamber
Multi-process, multi-material combination manufacturing
In practical applications, special parts in the aerospace field often need to be coupled by a variety of materials, and the process and performance requirements are also different. In response to such needs, LiM Laser uses multi-alloy, multi-process combined 3D printing to manufacture parts, which not only reduces the production cycle and processing costs, but also ensures the quality and performance of the finished product.
Taking the aero engine thrust chamber as an example, the part has many fine structures, complex internal flow channels and thin wall structure. First, the laser selective melting technology is used to complete the integrated forming of copper alloy (CuCrZr), and then the superalloy (GH4169) cladding layer is added to the external surface by laser cladding technology to achieve the purpose of surface modification. The final product combines high thermal conductivity and high strength.
Thrust chamber
A certain type of front fuselage product has complex overall structure, large size, high precision requirements, many key positions, and difficult processing. In actual manufacturing, LiM Laser fabricated and connected the entire fuselage into three section structures and two frame and beam structures. The six-stage piecewise forming method is adopted to control the deformation effectively after each stage is completed. Web beam parts are manufactured by web + laser deposition to optimize the forming scanning strategy, reduce the unit heat input, and increase the chamfer in the area with large cross-section changes to reduce stress concentration and ensure the forming quality.
Front middle body product of a certain model
Precision structure high quality forming
Aerospace products put forward strict requirements for precision, especially impeller, blade, thin-wall structure and other parts, to ensure product quality and performance in extreme working environments and complex design requirements, but also to achieve micron-level processing accuracy requirements.
The main structure of a satellite printed by LiM Laser is made of aluminum alloy. In order to overcome the problem of deformation and cracking of large plane and large size, a typical thin-wall sandwich structure is designed: the combination of thin-wall panel and lattice inner core can not only achieve rapid lightweight of components, but also have the advantages of high strength, good plasticity, fatigue resistance, sound absorption and heat insulation. Relying on metal 3D printing, thin-walled sandwich structural parts can be formed in one body, the internal lattice structure is intact, uniform thickness, accurate and reliable.
Main structure of a satellite
Taking the large-area (150mm×150mm) ultimate size structural part printed by LiM Laser as an example, the material is aluminum alloy. After forming, the whole structure of the part is intact, the rod diameter is only 0.2mm, and the dimensional accuracy is ±0.025mm.
Magnify the partial rod diameter diagram by 50x
The printed product can meet the forging performance requirements
The requirements for structural design of aerospace parts are getting higher and higher, and the requirements for forming quality of parts are more stringent.
The tail nozzle, an important part of the turbojet engine, has an envelope size of 500mm×870mm×2880mm, multiple internal flow channels, and difficult deformation control of the rotary body. It is manufactured by laser selective melting + material reduction forming, which takes 720h to make, and the final product meets the performance requirements of the forging.
Tail nozzle
A certain type of jet fuel injection rod printed by LiM Laser uses metal 3D printing to form in one piece, replacing the original welding spliting scheme, and ultimately reducing the number of welds by 14, greatly improving the stability of product quality.
Jet fuel injection rod
LiM Laser metal 3D printing equipment has been tested by users for a long time, stable and reliable operation, providing strong support for high-quality and efficient mass production of spare parts in the aerospace field, and participating in national engineering projects for many times. In the new generation manned spacecraft test ship project, LiM-S2510 laser near-net forming equipment was used to print the heat-proof outsole frame of the return capsule with a diameter of 3.95m, which solved the problem of "deformation and cracking" of large integral components, and achieved outstanding results in improving manufacturing accuracy, increasing manufacturing size and improving production efficiency. The material utilization rate is increased by 67%, which greatly improves the subsequent assembly efficiency.
Heat-proof outsole frame of reentry capsule
In 2021, the "Tianwen 1" probe will land on Mars, taking an important step in China's journey of interstellar exploration. In the process of task development, LiM LaserLiM-X series laser selective melting equipment manufacturing delivery of more than 30 products, LIM-S series laser near net forming equipment manufacturing delivery of 9 products.
Sky Man 1 probe
In recent years, the global aerospace industry has been booming, from engine components to satellite components, and then to aircraft structural parts, the application of 3D printing is changing the production mode of aerospace manufacturing; In addition, the steady development of low-altitude economy and commercial space track has also accelerated the development and improvement of metal 3D printing technology, which has become the normal manufacturing means of parts research and development and trial production and mass production. As an advanced enterprise in the metal 3D printing industry, LiM Laser has always been guided by the needs of users, optimizing the stability of equipment, strengthening the development of process technology, upgrading the quality of service, and strengthening the market competitiveness, so as to provide diversified metal 3D printing overall solutions for users in the aerospace field.
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