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Work hard | LiM Laser 2024 Technology display
Author：
Time：2025-01-09
Under the wave of new industrialization, additive manufacturing has become a key engine for reconstructing the manufacturing landscape, and is opening up a new road for industrial development with an innovative attitude. In the face of rapidly growing market demand, LiM Laser follows the development trend, from industrial equipment manufacturing to high-performance metal material forming, from aerospace application innovation to mold manufacturing, 3C electronics and other fields of large-scale application, and achieved a number of technical achievements in 2024. With the power of LiM Laser to accelerate the development of the manufacturing industry to digital and intelligent.
In response to the needs of users in the fields of aerospace, energy and power for large-scale, integrated and complicated parts production, LiM Laser released LIM-X1500HF in 2024. As the first SLM equipment equipped with "flight printing" technology, the forming format is 1500mm×1500mm, and up to 20 laser numbers can be configured. Relying on the flying device to realize the movement of the galvanometer, thus expanding the print area. With intelligent dynamic variable speed powder laying strategy, Z-axis precision transmission system, intelligent monitoring system, etc., to ensure continuous, stable and high-quality production. Full fresh air field control scheme, effectively take away the dust and black slag generated in the printing process, improve the consistency of large format printing; The wind farm design has been fully validated on LiM-X1500HF equipment, which also lays the foundation for the subsequent development of larger format equipment.
Faced with the pain point of integrated manufacturing of ultra-high size parts in the market, LiM Laser developed technology and iterative optimization on the basis of LIM-X800H equipment, and launched LIM-X800H + with a Z axis net forming height of 2500mm, providing a better solution for integrated forming of large-size long-axis parts. Self-developed double drive Z-axis patent design, while ensuring the forming height, the height of the control equipment is only 7m, which supports the layout design of most plants.
In recent years, the demand for metal 3D printing in the consumer goods industry has been increasing, and LiM Laser has launched a 3000W dual laser solution based on the LIM-X400M, a special device for consumer goods, with a printing layer thickness of 0.4mm, further improving the production efficiency of the equipment. In addition, the LiM-X400M+ equipment was released, and the forming size was upgraded to 400mm×300mm×450mm, with larger forming space to meet the needs of more users for complex structural parts production and mass production.
Pure copper and copper alloys have excellent electrical and thermal conductivity and corrosion resistance, and have a wide range of application prospects in aerospace and other fields. In response to the difficulties and challenges faced by high inverse materials such as pure copper and copper alloys in metal 3D printing, LiM Laser has launched green laser additive manufacturing solutions to effectively improve the forming quality of copper and copper alloy parts, and support the customized development of large-format and multi-quantity green laser SLM equipment, providing equipment basis for high-quality forming of more special materials.
Efficient powder cycle is an inevitable requirement for mass, scale and industrial development of metal 3D printing. LiM Laser provides diversified and efficient powder cycle solutions for different industry users in different application scenarios. Automatic powder cycle and split powder cycle solutions can be freely selected to ensure continuous and stable production.
Metal 3D printing equipment continues to develop in the direction of large size, multi-laser and high efficiency, which puts forward new requirements for equipment research and development and design, with the superposition of the number of lasers and scanning galvanometer, handling the problems of scanning galvanometer lap calibration, lap stability, multi-laser scanning task assignment, etc., is an important part of ensuring forming accuracy and production efficiency. To this end, LiM Laser carried out a special technical research, the introduction of the galvanometer intelligent calibration system, with full automatic, high efficiency, high precision, easy to operate and other advantages, automatic calibration, no manual intervention, shorten the printing preparation time, effectively control accuracy deviation. The scanning accuracy of the galvanometer can be controlled at ±0.03mm, and the overall scanning accuracy of the multi-galvanometer is stable at ±0.05mm. The accuracy of multi-optical lap is stable at ±0.05mm, which can effectively eliminate lap marks and lap dislocation of formed parts in the lap position.
In the face of sputtering, spheroidization, porosity, cracks and other defects in SLM forming process, the laser additive process detection system is used for real-time monitoring (that is, melting pool monitoring), so that the forming process can be known and controlled. The information of molten pool is analyzed and evaluated to provide important basis for process development, quality tracing and defect analysis.
Small Angle, no support technology, improve production efficiency
When using SLM technology to form parts of complex structures (such as internal flow channels, overhangs, etc.), if the forming Angle of the part is too small, it is necessary to add a support structure in the small Angle hanging area to prevent deformation and collapse of the formed part during the printing process, but increase the production cost and post-processing difficulty. Using his rich industry experience, LiM Laser systematically explored a number of key links, further optimized the printing strategy, introduced the unsupported process technology solution, broke the traditional 45° forming Angle limitation, and realized the unsupported forming of small Angle (5° ~ 35°) parts, which has been applied to the production of industrial parts such as impelers, reducing the difficulty of post-processing. Ensure high quality and efficient production.
Multi-process and multi-material combination printing, mining manufacturing potential
In aerospace and other fields, some parts need to be made of multiple materials to obtain better performance, which puts higher requirements on metal 3D printing technology. LiM Laser solves the process challenges and combines SLM technology with laser cladding technology to successfully manufacture high-performance complex structure thrust chamber parts: First, SLM technology is used to form copper alloy parts, and then laser cladding technology is used to add high-temperature alloy cladding layer to the external surface to achieve the purpose of surface modification. The final product has high thermal conductivity and high strength properties, proving the manufacturing potential of multi-alloy and multi-process combination 3D printing, providing a new manufacturing idea for the rapid development of low-cost and high-quality parts.
Optimize process technology to help mold manufacturing transformation
With the acceleration of the transformation and upgrading of the manufacturing industry, and the continuous upgrading of advanced manufacturing and intelligent manufacturing, the field of mold manufacturing is also seeking process technology innovation to solve the bottleneck problems faced. According to the market demand of the mold manufacturing industry, LiM Laser continues to develop metal 3D printing process technology, and relies on LIM-X400M series equipment to solve a number of mold manufacturing production problems, contributing to the transformation and upgrading of the industry.
Optimization of automatic grafting scheme, based on "machine vision" to replace the cumbersome and time-consuming traditional positioning method, positioning accuracy up to ±0.1mm. The scheme realizes the mixed manufacturing of additive and subtraction materials. The machined parts are used as the base, and the form-following cooling part of the mold insert is formed separately on the cutting plane, and the complete mold is formed by "shifting the wood", which can significantly reduce the printing cost and shorten the printing time.
In order to efficiently and flexibly solve the problem of trapped gas in the mold, LiM Laser directly prints the mold with exhaust system by optimizing the design structure and adjusting the process parameters, realizing effective air permeability and greatly improving the overall yield of injection parts.
Special material forming scheme to solve the difficulties of integrated manufacturing
In 2024, driven by market demand, LiM Laser launched LIM-AL-HRM high-strength aluminum alloy material, which can overcome the problems of hot cracking sensitivity and low density of formed parts during SLM forming, and can form an enhanced phase with high thermal stability and improve the mechanical properties of the material. Based on this material, the process technology solution introduced solves the problem that high-strength aluminum alloy parts with large size and complex structure are difficult to integrate, and successfully printing LiM-Al-HRM high-strength aluminum alloy UAV frame: through structural optimization and improvement, the overall weight is reduced by about 20%, and the tensile strength of the material after heat treatment exceeds 570MPa and the elastic modulus is about 70GPa. Meet the technical requirements of lightweight, high stiffness and high strength, and the production cycle and production cost have also been significantly improved.
At the 2024 TCT exhibition, LiM Laser exhibited a full-format printed automotive connection frame to demonstrate the application of metal 3D printing technology in large-scale production. LiM-X1300H equipment adopts 80μm large layer thickness process, 112 hours to complete the printing and manufacturing of 240 automotive connection frames, to achieve multi-layer batch printing, the production cycle is shortened by 20%, the production cost is reduced by more than 60%, and provides an exploration path for further production increase and efficiency.
Enterprising little stars pave the way, steady step since success. LiM Laser has always adhered to the concept of "making manufacturing more efficient", and has gone all out to explore the development space of metal 3D printing, promoting its large-scale application in more fields, more square views, and larger platforms. Looking forward to 2025, we will firmly deepen innovation, take root in practice, embrace change, and support advanced technology products and professional services to help users achieve the goal of reducing cost, increasing efficiency and improving quality, leading the development of the manufacturing industry.
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