3D printing technologyis a revolutionary type of printing technology. Its unique advantage is the ability to directly create parts of any form from computer graphics data. Without the use of any molds or machining, it greatly speeds up product development, reduces manufacturing costs, and increases productivity. The most popular raw material to 3D print metal parts has been 3D printing powder. 3D printing metallic powder is an important component of the 3D printer industry.
Metal powder preparation
The current metal powder preparation techniques can be classified into one of the following categories: electrolysis, reduction, or carbonyl decomposition. The preparation method is what determines the final product. Powders made by electrolysis, reduction and atomization are the most commonly used as raw materials in powder metallurgy. You can use the atomization method to make alloy powder. Modern atomization processes can even control the powder shape. The atomization technique is gradually becoming the preferred method for powder production due to the continuous improvement of its atomization cavity structure. 3D printing requires a specific atomization method. A mechanical process that pulverizes molten metal to produce small particles of less than 150mm is called the atomization technique.
Water atomization is one method that can be used to produce atomized dust. Water atomization medium is both cheap and simple to get, but it also has excellent atomization performance. The domestic water atomization process is currently used to create steel powder, matrix for diamond tools and pre-alloy product for oil-bearing bearings. It also produces powder for hard surfaces technology and iron-based or nickel-based magnetic particles. Because water’s specific heat is greater than the capacity of gases, when the atomization takes place, broken metal particles can solidify quickly, which causes irregularities in the powder. Water can react with other alloys or metals which have high activity. In addition, powders with high activity will react to water. These issues limit water atomization when preparing metal powders having high sphericity but low oxygen.
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