局部增强切片对3D打印FDM模型弯曲强度的影响

为了提高熔融沉积(FDM)3D打印模型的弯曲强度和比强度,通过Cura软件局部增强切片功能对聚乳酸(PLA)试样的中心区域进行了加强,使用FDM工艺制作了8组试样(包含0#参考组和1#~7#增强组),对各组试样进行三点弯曲实验,对比不同增强切片参数下PLA试样的弯曲强度和比强度。结果表明,随着局部增强填充密度的增大,PLA试样的弯曲强度先增大后减小;随着局部增强填充走线乘数的增大,PLA试样的弯曲强度逐渐增大;随着局部增强挤出倍率的增大,PLA试样的弯曲强度逐渐增大;与0#参考组相比,局部增强填充密度60%、局部增强填充走线乘数3、局部增强挤出倍率120%三种方式下PLA试样的比强度分别提高了16%,13%和5%,通过局部增强填充密度方式产生的比强度提升效果最好。因此,对于常规切片参数为填充密度20%、填充走线乘数1、挤出倍率100%的FDM模型,将局部增强区域填充密度设置为60%可以有效提高其弯曲强度和比强度。

基于高分子材料3D打印成型技术探究

随着数字技术的快速发展,3D打印技术作为一种创新的制造方法正逐步改变传统的制造业。3D打印技术能够通过逐层材料的叠加来直接构建三维物体,从而在设计自由度、制造效率和个性化制造方面提供了前所未有的可能性。在众多3D打印材料中,高分子材料以其加工便捷、性能可调和成本效益等优势,成为增材制造领域的重要选材之一。基于此,探讨高分子材料的3D打印技术的原理、发展现状、应用案例以及面临的主要挑战和未来发展趋势。

基于快速成型技术的组织工程支架制备进展

介绍了组织工程支架的重要性和基本要求 ,综述了组织工程支架制备中的新技术 :三维打印技术、熔融沉积模型以及选择性激光烧结等三种快速成型技术的基本原理及应用情况 。

Comparison of wear behavior of ABS and Nylon6-Fe powder composite parts prepared with fused deposition modelling

Fused deposition modeling(FDM) is one of the latest rapid prototyping techniques in which parts can be manufactured at a fast pace and are manufactured with a high accuracy. This research work is carried out to study the friction and wear behavior of parts made of newly developed Nylon6-Fe composite material by FDM. This work also involves the comparison of the friction and wear characteristics of the Nylon6-Fe composite with the existing acrylonitrile butadiene styrene(ABS) filament of the FDM machine. This Is carried out on the pin on disk setup by varying the load(5, 10, 15 and 20 N) and speed(200 and 300 r/min). It is concluded that the newly developed composite is highly wear resistant and can be used in industrial applications where wear resistance is of paramount importance. Morphology of the surface in contact with the Nylon6-Fe composite and ABS is also carried out.