在3D打印的聚合物元素中对线程的承载能力评估
Mateusz Śliwka1, Błażej Wójcik1
1Department of Mechanical Engineering Fundamentals, Faculty of Mechanical Engineering and Computer Science, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biała, Poland.
Polymers
|January 10, 2026
概括
金属插件显著提高了3D打印尼龙 (PA 12) 中M8线程连接的机械强度. 螺旋线圈插件提供了最高的负载能力,而热置插件为SLS组件提供了技术优势.
科学领域:
- 添加剂制造 添加剂制造 添加剂制造
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 选择性激光烧结 (SLS) 是生产功能性聚合物零件的关键增材制造技术.
- 在聚合物组件中的线程接头通常需要加强以满足机械需求.
- 评估提高SLS打印聚胺12 (PA12) 线连接耐用性的方法至关重要.
研究的目的:
- 通过SLS制造的PA 12标本中对M8线程接头的机械性能进行比较分析.
- 评估直接线程打印与金属插件增强 (螺旋圈和热套) 在关节强度上的有效性.
- 为了确定不同螺纹接头配置的故障模式和承载能力.
主要方法:
- 使用SLS技术制造了长方形PA 12标本.
- 创建了三种类型的M8线程接头:直接打印线程 (PT),螺旋圈插件 (HT) 和加热插件 (IT).
- 拉力测试以恒定位移速率 (2mm/min) 进行,以记录最大力 (F_MF) 和故障时的位移.
主要成果:
- 直接打印线 (PT) 的承载能力最低 (平均F_MF = 3.41 kN).
- 热置插件 (IT) 提高了12%的承载能力 (平均F_MF = 3.83 kN).
- 螺旋圈插件 (HT) 提供了最高的承载能力,将关节强度提高了40% (平均F_MF = 4.78 kN).
- 所有样品的故障都是由于线程或插件拉出来而发生的.
结论:
- 金属插件显著提高了SLS打印PA12组件中螺纹接头的机械强度和承载能力.
- 螺旋线圈插件提供更高的负载能力,而热设插件提供更好的技术优势.
- 直接打印线程适用于较低的机械负载和较大的线程大小,但对于高强度要求的应用性有限.
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