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(Note: this annealing process totally according to CreatBot 3D printer and PEEK filament, not suitable to other brand machines, also not suitable to other machine printed parts annealing. )
Firstly what's annealing? The so-called annealing process actually is to put the material in the oven for some time. This is a necessary process for polymer materials, aiming to eliminate or reduce internal stress, to enhance the overall properties of a material.
Benefits of annealing: PEEK is a polymer material, semi-crystalline thermoplastic engineering plastics, glass transition temperature is close to 150 ℃, once considered expensive in the early days. 3D printed PEEK parts, usually printed by FDM 3d printers. For PEEK material as a polymer material, after extrusion, intramolecular stress not eliminated, this will affect quality of PEEK printed parts. Usually it's a good way to put PEEK printed parts into oven for some time for annealing, the length of time is according to model size. After good annealing treatment, material internal stress eliminated, it will be great helpful to parts further process, and parts toughness& strength also much superior.