First, fill the printing chamber with an inert gas (such as argon) to minimize the oxidation of metal powder.
Then heat it to the best printing temperature. Spread a thin layer of metal powder on the platform, scan the cross section of the component with a laser, and melt (or fuse) the metal particles together to complete the data printing of this layer.
After the printing of the previous layer is completed, the printing platform moves down one layer of thickness, and the squeegee moves across the platform to deposit the next layer of powder into the inert printing chamber. Then reapply another layer of metal powder. Repeat this process layer by layer until printing is complete.
After the printing process is completed, the parts will be completely encapsulated in metal powder. The support in metal 3D printing is constructed using the same material as the part, and it is always necessary to alleviate warpage and deformation that may occur due to high processing temperatures.
When the material box is cooled to room temperature, the excess powder will be manually removed. The parts are usually heat-treated while still attached to the printing platform to eliminate residual stress. Then, the assembly is removed from the printing board by wire cutting, ready for use or further post-processing.