1,The aerospace: Boom of 'Additive revolution IEnumerator.
Higher gas temperatures,lighter engine systems and scorching-hot combustion environments.Next-generation airplane and rocket engines are pushing facilities that make the required components from metals and ceramics to their limit.
The aerospace industry has very demanding requirements on components: lightweight (preserve energy), complicated structure (enhance efficiency), high temperature (ensuring safety), high pressure (ensuring safety). Metal 3D printing has thus turned out to be the fundamental approach for resolving these contradictions with the help of topology optimization design and integrated forming technology.
Typical case 1: Titanium alloy frame of excessive size
At the 2025 TCT ASIA exhibition, the world's first titanium alloy aircraft frame with a size of more than 6 meters (6295mm × 2198mm × 614mm) was demonstrated by Laiming Laser. The component takes the hybrid manufacturing technology of coaxial powder feeding with machining process, utilizes the topology optimization design to change the traditional multi-component assembly structure into one lightweight integral limber structure, and reduces the weight by 35% and improves the fatigue strength by 20%. This achievement verifies the potential application of the metal 3D print technology in the field of large-sized aviation structure component manufacture, which embodies the technical support given to the wide body flight fuselage integrated design technology.
Case 2: Multimaterial rocket nozzle
The rocket nozzle design project, which is the very first 3-ton class of print-part, was developed by InssTek in partnership with the Korea Aerospace Research institute (Isawon Gu, Daejeon). 3D printing of a 3 ton rocket nozzle using DED (Directed Energy Deposition) technology had never been tested before, and the printed rocket nozzle was produced by multi material printing with aluminum bronze and Inconel 625. Cooling channels are arranged at 1 mm intervals in the nozzle and the outside is built with high temperature resistive nickel based alloy. The thermal stress concentration is resolved by gradient material design. After verification the combustion test, the nozzle can also keep its structural integrity under the hyperthermal conditions, which paves a new way for the thrust chamber design of heavy carrier rocket.
Technical value:
Light Formation: With optimization of the lattice structure, the weight of parts is decreased 30% ~ 50%, greatly improving the fuel efficiency.
Increased functional integration: Complex constructions (e.g. cooling channels (5) or fluid manifolds (4)) can be incorporated in the components (2,13), eliminating the need of assembly operations.
Material innovation: Multi material 3D printing technology realizes the synergy of the properties of different metals, breaking through the performance limitation of individual metal.
2,The Automotive Industry: Additive Manufacturing Chain from Concept to Serial Part
The automotive industry is experiencing a two-fold transformation toward electrification and intelligence and metal 3D printing has served as a fundamental tool for auto makers' innovation in kickstart to mass production with rapid prototyping, lightweight part manufacturing, and personalized production.
Case 1: Frame of Titanium Alloy Electric Motorcycle
The titanium alloy frame developed by Huashu High tech and Starck Future is printed in endeight laser s SLM technology and has dimensions of 720x420x650 mm. The frame adopts "topology optimiztion" design, reaching a reduction weight by 40%,and achieving the strengh, reducing the original 200+welding points to 12 and the production cycle from 6weeks to 72 hours. This case shows that the production capacity of metal 3D printing is large and can meet the annual demand for the production of high-end electric motorcycles.
Case 2:Aluminum alloy robot leg bones
As shown by the AlSi10Mg aluminum alloy robot leg bone that is presented by Leiming Laser, the printed leg bone is 200mm ×170mm × 400mm and is fabricated by SLM method. Through the structure design of bionic bionic in the inner side of the leg bones, employing honeycomb lattice structure inspired by biomimetics reduces 25% weight and retains higher rigidity. The parts have been printed without interruption for 48 h, with their surface roughness Ra ≤ 6.3 μ m, which satisfy the high requirements in structure accuracy for robot gait control.
Technical value:
Fast iteration: The prototype production cycle has changed from months to days, and the development cycle has been shortened in the development of a new car.
Light weight / performance balance: Topology Optimization "weight reduction withou t strength reduction" to extend EV range.
Resilience of the supply chain: On-site production of spare parts for old vehicle models lowers stock prices and diminishes the risk of the supply chain.
3, Mold production: Change the way from "experience oriented" to "data oriented"
Mould is one of the necessary production tool in industrial production, its performance stand in line with production efficiency and product quality. The construction and manufacturing technologies of molds are not only unlimited by mold development, but also the metal 3D printing can design and manufacture the mold beyond the limitations of the previous technology, using conforming cooling water channels, precision molds hot nozzles, and lightweight structure.
TYPICAL CASE l The Example of Soft Type Cooling Water System Mold
Waterway Molds The waterway molds, which are printed by the LiM-X400M+ manufactured by Platinum Technology, are 343mm × 242mm × 120mm in size, and are utilized in the injection molding process of automotive parts. The conventional molds use the straight hole the water channel and the cooling efficiency is low and the product deformation is large; The 3D printing mold adopts the bionic flow channel design, so that the cooling water channel is close to the surface of the product, the molding cycle is shortened by 30%, and the product qualification rate is increased by 15%. It has been estimated that only one spread of molds can reduce the production costs by more than 500000 yuan per year.
Case 2 Too: Thin-Shell Insulated Mesons
For injection molds, insulating mesons can be employed to minimize heat transfer from the splitter plate to the mold. The traditional processing of making hexagonal honeycomb uses a lot of machine tool cutting and milling, and the material utilization rate is below 40%; metal 3D printing can directly print hollow hexagonal lattice particles to 90%, improve the insulation efficiency by 25%, the life of the mold is increased by three times.
Technical value:
Freedom of design: Break through the limitation of traditional mold on waterway design, and realize the personalized design of "the first mock test, one optimization".
Production efficiency increased: can reduce more than 50% of mold making cycle, save mold test costs.
Material creation: Create special mold material segments; increase the application range of high thermal-conductivity copper alloy; resistant cast Ni paste alloy.
4, Energt equipment: "Adding agent series" extreme pressure working condition lubricant project
In the energy sector like nuclear plant and gas turbines, components must resist high temperature, high pressure, and aggressive corrosive condition over a long period of time. Metal 3D printing offers a new way to manufacture parts in ultra sever working environment by tuning material performance and structural optimization.
Case 1: Typical Case: Five-outlet aerial nozzle of a coke oven.
The 73x300x228mm, five outlet nozzle co-developed by ArcelorMittal and TheSteelPrinters is printed in AdamIQ3167L stainless steel material. This nozzle incorporates 5 separate traditional components into a single piece and shortens the production cycle from 4 months to 3 weeks. DESCRIPTION-The material microstructure is also optimized using a laser powder bed melting (LPBF)technology, enhancing its resistance to corrosion by 30% and thus meeting the 10-year maintenance-freeconditions of coke oven.
Example 2 Standard Repair of Gas Turbine Blades
Siemens Energy utilises metal 3D printing for the restoration of worn out gas turbine blades, scanning worn surfaces through reverse engineering and printing directly nickel based alloy repair layers, which closely match the substrate material. The refurbished blades underwent a hot test at 1000 °C, and exhibited a performance of up to 95% from the new part standard. Single piece repair cost was decreased 70%, while repair cycle was shortened from 6 weeks to 72 hours.
Technical value:
Customization of material performance: By adjusting the process parameters, the performance of the material can be tailored (such as tuning its hardness, toughness and corrosion resistance).
Spare economy: Cut the lifecycle cost of old equipment and longer the life of important parts.
Fast response time: in situ printing of repair parts can minimize the downtime of equipment.