A Review on Material Extrusion Additive Manufacturing of Metal and How It Compares with Metal Injection Moulding
A Review on Material Extrusion Additive Manufacturing of Metal and How It Compares with Metal Injection Moulding
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DOI：
10.3390/met12030429
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发表时间：
2022-03-01
期刊：
影响因子：
2.9
通讯作者：
Manonukul, Anchalee
中科院分区：
文献类型：
--
作者：
Suwanpreecha, Chanun;Manonukul, Anchalee
金属挤压添加剂制造作为3D打印技术的一种，以其简单、经济的特点受到了越来越多的关注。金属MEX工艺类似于传统的金属注射成型(MIM)工艺，包括金属粉末和聚合物粘结剂的原料制备，层层3D打印(金属MEX)或注射(MIM)以产生绿色零件，脱脂以去除粘结剂，以及烧结以产生固结的金属零件。鉴于近年来金属MEX的快速发展，有必要对当前的研究工作进行综述，以进一步了解金属MEX零件的关键工艺参数和相关的物理力学性能，为进一步的研究和实际应用奠定基础。本文从原料、印刷、脱脂和烧结等方面对现有文献进行了系统的总结和总结。文中还讨论了三种主要合金(316L不锈钢、17-4PH不锈钢和Ti-6Al-4V)与加工有关的物理和力学性能，即固体载荷-尺寸收缩图、烧结温度-相对烧结密度图、应力-伸长图，并与成熟的MIM性能和MIM国际标准进行了比较，以评估金属MEX发展的当前阶段。
Material extrusion additive manufacturing of metal (metal MEX), which is one of the 3D printing processes, has gained more interests because of its simplicity and economics. Metal MEX process is similar to the conventional metal injection moulding (MIM) process, consisting of feedstock preparation of metal powder and polymer binders, layer-by-layer 3D printing (metal MEX) or injection (MIM) to create green parts, debinding to remove the binders and sintering to create the consolidated metallic parts. Due to the recent rapid development of metal MEX, it is important to review current research work on this topic to further understand the critical process parameters and the related physical and mechanical properties of metal MEX parts relevant to further studies and real applications. In this review, the available literature is systematically summarised and concluded in terms of feedstock, printing, debinding and sintering. The processing-related physical and mechanical properties, i.e., solid loading vs. dimensional shrinkage maps, sintering temperature vs. relative sintered density maps, stress vs. elongation maps for the three main alloys (316L stainless steel, 17-4PH stainless steel and Ti-6Al-4V), are also discussed and compared with well-established MIM properties and MIM international standards to assess the current stage of metal MEX development.