Traxel Kellen D, Bandyopadhyay Amit
W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
Addit Manuf. 2021 Jan;37. doi: 10.1016/j.addma.2020.101602. Epub 2020 Sep 20.
Production-volume and cost requirements currently limit machine tool manufacturers' ability to produce application-specific tooling with traditional methods, motivating the development of innovative manufacturing technologies. To this end, we detail a manufacturing framework for the design and production of application-specific cutting tools based on industry standard tungsten carbide-cobalt (WC-Co)-based "carbide" cutting materials using additive manufacturing (AM). Herein, novel diamond-reinforced carbide structures were designed and manufactured via AM and subsequently tested in comparison to current commercial products that are traditionally-processed. The resulting diamond-reinforced composites were free from large scale cracking and maintained microstructures with multiple reinforcing phases. Diamond incorporation had a remarkable effect on the processing, microstructure, and machining performance of the WC-Co based material in comparison to a commercial carbide cutting tool of similar composition as well as the base WC-Co matrix. Detailed microstructure and phase analysis, as well as machining experiments, demonstrate the ability to exploit laser-based directed energy deposition (DED)-based AM to create multifunctional cutting tools that can be designed to meet ever-increasing manufacturing demands across many industries.
目前，产量和成本要求限制了机床制造商使用传统方法生产特定应用刀具的能力，这推动了创新制造技术的发展。为此，我们详细介绍了一种制造框架，用于基于行业标准的碳化钨-钴（WC-Co）基“硬质合金”切削材料，使用增材制造（AM）设计和生产特定应用的切削刀具。在此，通过增材制造设计并制造了新型金刚石增强硬质合金结构，并与传统加工的现有商业产品进行了对比测试。所得的金刚石增强复合材料没有大规模裂纹，并且保持了具有多个增强相的微观结构。与成分相似的商业硬质合金切削刀具以及基础WC-Co基体相比，金刚石的加入对WC-Co基材料的加工、微观结构和加工性能产生了显著影响。详细的微观结构和相分析以及加工实验表明，利用基于激光的定向能量沉积（DED）增材制造能够制造多功能切削刀具，这些刀具可设计用于满足众多行业不断增长的制造需求。
