Metal 3D printing is gradually moving towards large-scale applications in batches. If the cost is reduced by more than 50%, the application scale may be expanded by 10 times or even 100 times. In the "equipment-material-3D printing" industry chain, one of the most important questions is how to reduce the cost of 3D printing metal powder?
Direct gas atomization to make powder, or processing into wire or bar material and then making powder is determined by the principle of its own powdering technology, and there is no way to change it. To reduce costs, one has to try to expand the upper limit of the powder spreading particle size, such as laser printing to 63 microns, or larger 75 microns, because many large parts are most important to dimensional accuracy, and you can give up a little surface accuracy. Increasing the particle size by more than ten microns will be beneficial to the comprehensive utilization of powder and the cost reduction of laser printing. In addition, there is still room for improvement in the overall industry application volume. As long as the printing technology can be used in large quantities in industrialization, the cost of aerosolization and rotating electrodes or other technologies is basically the same.
In addition, the quality of the powder produced by these atomization technologies is not the same, and the cost cannot be compared from a technical point of view. From the application side, the particle size of the fine powder should be appropriately increased, the coarse powder can be consumed in large quantities in the coaxial powder feeding, and the comprehensive utilization of the powder can reduce the cost of the manufacturer and the user. The cost of powder has dropped a lot since these years. If the industry can continue to maintain high growth, the cost will continue to fall, the market will make a choice, and everyone is thinking of ways.
Starting from raw materials and manufacturing processes is an effective way to reduce the manufacturing cost of metal 3D printing powders. Alloy powders for aerospace use need to use pre-alloyed rods or wires as raw materials to achieve the goal of homogenization of the composition and purity of the alloy. High-level powder milling, printing and heat treatment have maximized the performance of alloy materials. Alloy powder materials for aerospace are mainly used in the manufacture of structural parts, and material quality is the key. Choosing upstream element materials and realizing short-process powder production through ingredients can significantly reduce the cost of 3D printing powder, but the alloying and purification of element materials is very necessary, otherwise the material properties are extremely unstable. The smelting of alloy raw materials generally requires VIM, ESR, VAR and other processes. High alloying elements generally go through a two-link smelting process to ensure the quality of the alloy metallurgy. However, each additional process will increase the cost significantly. This is also the reduction of 3D printing alloy powder. The difficulty of this book is not only to ensure the quality of aerospace and aerospace, but also to reduce costs, which requires creative technological research.
KMPASS does this: the metal 3D printing process has a strong discreteness, requiring a narrow window for the composition of the alloy powder raw materials and very stable physical and chemical properties. It is necessary to get through all aspects of material composition design, master alloy preparation, atomized powdering, printing, and heat treatment. Chain material technology, which is the key to accelerating the application and promotion of 3D printing technology. Cost reduction cannot be done at the expense of material performance and quality, and high-end domestic materials should be made. KMPASS starts with low-cost manufacturing of ultra-high purity Tara master alloys and short-process high-energy atomization powder milling. While ensuring the metallurgical quality of raw materials, it reduces costs and increases efficiency, saves material costs for users, and promotes the development of the industry. Using elemental materials to prepare 3D printing alloy powders at low cost, application verification studies can be carried out in civilian scenarios, and data can be accumulated.
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