3D Printing (3DP) Process
The three-dimensional printing process was developed by the Massachusetts Institute of Technology E-manual Sachs et al. It has been commercialized by Soligen Corporation of the United States under the name of DSPC (DirectShell Production Casting) to manufacture ceramic shells and cores for casting.
The 3DP process is similar to the SLS process and is formed from powder materials such as ceramic powders and metal powders. The difference is that the material powder is not joined by sintering, but the cross section of the part is “printed” on the material powder by means of a nozzle with a binder such as silica gel.
The principle of 3DP is that the powder storage cartridge and material are placed at the beginning of the rapid prototyping process. The parts are made up of powder and glue. On the right is the place where the parts are made. Inside the work platform is a flat metal plate with a layer of fine powder spread out by a roller and then bonded by a printhead during the manufacturing process.
Advantage
(1) Fast speed.
(2) Suitable for manufacturing parts with complex shapes.
(3) Parts that can be used to make composite or non-uniform materials.
(4) It is suitable for manufacturing small batch parts.
(5) It is a green office design without pollution.
Disadvantage
(1) The parts have poor precision and the surface roughness is poor.
(2) The parts are variability and even cracks.
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