Study on the Surface Roughness of Additive Manufacturing PLA Parts with Heat Treatment

• Main Authors: WANG, JING-KAI, 王靖凱
• Other Authors: WANG, MIN-WEN
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/a72k5f

碩士 === 國立高雄應用科技大學 === 機械工程系 === 106 === In recent years, Additive Manufacturing (AM) offers the ability to build initial prototypes from a variety of materials. Fused Deposition Manufacturing (FDM) is one of additive manufacturing techniques that produce 3D objects through plastic filaments. However, there are some shortcomings in the manufacture of FDM. Such as, FDM technology builds models one by one by stacking, due to the existence of gaps between the material and the material, as well as in the construction of the stack to build the workpiece, the ladder caused by the impact of the quality of their products surface quality problems. Although, the current improvement of the surface quality is mostly chemical solvent chemistry. Therefore, this study will use physical surface treatment, the use of FDM technology to produce polylactic acid (PLA) products, by using a high-temperature sintering furnace, PLA products to the surface treatment to improve the quality of the product surface roughness. The study will eventually use Taguchi experimental methods, the FDM process factors and furnace heating factors combined with Taguchi experiment to find the best treatment parameters to improve the surface quality.From the experimental results of this study, it is found that when the sintering furnace temperature is 140 ℃, the cylindrical test specimen and the cubic test specimen with the thickness of 0.1 mm made by FDM are placed at this temperature and the processing time is 10 min, the resulting surface roughness is the best, the surface roughness of 0.6328 μm and 0.5098 μm, respectively.