By Swain Thorne
The creation of three-dimensional items by adding layers of material is known as additive manufacturing. However, it is more popularly known as 3D printing. Even though 3D printing has revolutionized the design and manufacturing processes, the completed goods still frequently require additional processing to be smooth, precise, and usable. Following is a list of examples of some common applications of additive manufacturing post-processing:
Surface finishing
The layer-by-layer printing process produces a 3D-printed component that often has a rough surface. Surface finishing is the process of smoothing down this surface. Sanding, polishing, and painting are all examples of post-processing processes that can be used to improve the surface quality of the product and give it a more visually acceptable appearance. Sandblasting and shot peening are two other techniques that can be utilized to produce a consistent surface texture.
Support removal
It is common practice in 3D printing to develop support structures to hold up overhanging elements throughout the manufacturing process. This phase entails the removal of these support structures that were previously constructed. After the printed component has been put together, these auxiliary structures must be taken down and discarded. By using post-processing procedures like cutting, grinding, or dissolving the supports, it is possible to easily remove them from the part without causing any damage to the piece itself.
Heat Treatment
Some materials used in 3D printing, such as metals, can improve their mechanical properties by submitting them to heat treatment. This is especially true of the material’s strength. Metal components can have their strength, flexibility, and toughness enhanced through heat treatment. The feature is first allowed to cool down after being heated to the required temperature and then maintained at that temperature for the allotted time.
Surface coating
Post-processing techniques like electroplating, anodizing, or powder coating can be used to improve the surface finish while also providing further protection against wear, corrosion, and UV radiation. These processes can also be used to add additional layers of protection. 4. Coating of the Surface In addition, other techniques, like electroplating, can be utilized to improve the surface polish of the component. These procedures allow for modifying the part’s color and electrical conductivity.
Machining
Objects made using 3D printing can be machined to achieve more precision and complicated geometries than achievable with the printing process alone. This is made possible by the machining process. Post-processing techniques such as CNC machining, drilling, and tapping are all options for removing surplus material or adding threaded holes. These techniques can be used in conjunction with one another. The processes of milling and turning are two more forms of post-processing.
Assembly
Components generated using a 3D printer can be coupled with those printed using other methods to produce a more complicated assembly. Post-processing methods, such as gluing, welding, or attaching, can combine components created using a 3D printer with other components.
Testing and inspection
Post-production methods, such as optical scanning, X-ray inspection, or tensile testing, can verify the correctness, strength, and usefulness of objects that have been 3D printed. These procedures make it possible to identify flaws in the component, such as cracks or voids, that might interfere with the component’s ability to perform its job.
In conclusion, the post-processing techniques for additive manufacturing make it possible for the final 3D-printed object to have a surface that is smoother, more precise, and more practically applicable. Surface finishing, support removal, heat treatment, surface coating, machining, assembling, as well as inspection, and testing are some examples of processes that fall under this category. Utilizing these methods to build components of superior quality and functionality allows manufacturers to better cater to the unique requirements outlined by their clients.
