对选择性激光烧结加工零件的摩擦行为进行实验调查
Prithvirajan Rajendran1, Arumaikkannu Ganesan1
1Department of Manufacturing Engineering, College of Engineering Guindy, Anna University, Chennai, India.
3D printing and additive manufacturing
|October 3, 2024
概括
选择性激光烧结 (SLS) 从聚合物粉末中生产功能部件. 这项研究揭示了SLS聚胺 (PA12) 和PA-GF材料在增加负载时的摩擦力降低,使它们适合工具加工.
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
- 部落学 (tribology) 是一个学科.
背景情况:
- 选择性激光烧结 (SLS) 是一种粉床融合增材制造技术,用于从聚合物粉末中生产功能部件.
- SLS可为各种应用提供定制生产,包括用于传统制造和检验的工具.
- 用SLS制造的零件的机械和tribological性能对于其在工具应用中的性能至关重要.
研究的目的:
- 为了评估使用SLS聚胺 (PA12) 和玻璃珠填充聚胺 (PA-GF) 材料制造的零件的摩擦行为.
- 为了研究构造方向,负载和速度在干滑条件下对摩擦系数的影响.
- 了解磨损机制以及表面多孔性和材料组成对tribological性能的作用.
主要方法:
- 在干式滑动条件下使用Pin-on-Disk tribometer进行摩擦行为的表征.
- 应用Taguchi的方法和差异分析 (ANOVA) 来量化影响因素 (负载,速度,构建方向) 的影响.
- 检查磨损表面 (碎片,钉子和盘) 以阐明磨损机制.
主要成果:
- 无论是PA12还是PA-GF材料,随着施加负载的增加,摩擦系数都会降低.
- 增加的滑动速度对两种材料的摩擦系数产生了不利影响.
- 与负载和速度相比,零件构造方向对摩擦的影响相对较小.
- 固有于SLS工艺的表面多孔性显著影响摩擦行为.
- 在PA-GF中的玻璃珠充当了增强剂,影响了摩擦和磨损特性.
结论:
- 由SLS制造的PA12和PA-GF材料表现出有希望的低摩擦和磨损特性.
- 研究结果表明,这些材料是适合用于工具应用的候选材料,在这些应用中,tribological性能至关重要.
- 表面多孔性和材料组成 (例如,玻璃珠增强) 是控制SLS零件摩擦行为的关键因素.
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