A Special Interest Seminar in the programme of the virtual Euro PM2021 conference, organised by the European Powder Metallurgy Association (EPMA) and held October 18-22, 2021, focused on developments aimed at enhancing the sustainability of production by Metal Injection Moulding. This seminar comprised three presentations from representatives of different points in the MIM process chain. ... Read more »
In recent years there has been a surge in interest in sinter-based metal Additive Manufacturing, with many of these technologies adapting the materials used in Metal Injection Moulding. Whilst Binder Jetting (BJT) and Material Extrusion (MEX) processes lead the field in terms of market penetration, sometimes something radically different comes along. This is certainly the case with Germany’s Headmade Materials, whose Cold Metal Fusion (CMF) AM process takes a completely new approach. Dr Georg Schlieper visited the company and reports for PIM International on the company and its technology. ... Read more »
A technical session, comprising three papers, at the Euro PM2021 Virtual Congress, organised by the European Powder Metallurgy Association (EPMA) and held from October 18–22, 2021, assessed various aspects of the formulation and preparation of feedstocks for Metal Injection Moulding. Dr David Whittaker reports on three papers that addressed solvent debinding efficiency, strategies for enhancing the debinding of polyacetal (POM) feedstocks, and, lastly, an analytical method for enhancing the understanding of the homogeneity of MIM feedstocks and green parts. ... Read more »
Type 420 martensitic stainless steel covers a wide carbon range of 0.15% to 0.45%. Demand for this material from the 3C, automotive, biomedical and aerospace industries has been increasing thanks to its combination of moderate corrosion resistance, high hardness, and good tensile properties. In this study, Shu-Hsu Hsieh, Dr Chung-Huei Chueh, and I-Shiuan Chen, from Chenming Electronic Technology Corp. (UNEEC), Taiwan, investigated Nb-alloyed 420 produced using BASF SE’s Catamold 420 W feedstock. Decarburisation was examined in samples processed in both a graphite furnace and a molybdenum lined furnace. Microstructure, phase and hardness variations from the sintered state to each specific stage in heat treatment were also explored. Additionally, the influence of niobium on the formation of intergranular compounds, carbides, and carbonitrides was also assessed in each heat treatment stage for comparison. ... Read more »
The ability to innovate is the cornerstone of the successful evolution of technology companies. Jiangsu Gian Technology Co., Ltd., China’s largest Metal Injection Moulding company, has always followed such a philosophy. Dr Chiou Yau Hung (Dr Q) visited the company on behalf of PIM International and spoke with Junwen Wu, the company’s vice president, about how innovation, from materials development to the use of Artifical Intelligence for advanced quality management, has become the driving force behind the company’s success. ... Read more »
Binder Jetting – at once the new kid on the block yet one of the industry’s earliest processes – holds the promise of taking metal Additive Manufacturing into the territory of true high-volume production. Yet progress towards this goal appears to be struggling, with machine sales lower than many hoped and two new ‘big players’ appearing to be holding back on full commercialisation. In this report, Joseph Kowen considers the development of this industry to date, the obstacles facing its growth, and, of course, the recent announcement of two of Binder Jetting’s biggest rivals coming together in the most unexpected acquisition. ... Read more »
In this article, Dr Samuel von Karsa-Wilberforce, Emery Oleochemicals, Germany, and co-authors report on the tensile strength of sintered 316L specimens produced via Fused Filament Fabrication (FFF), a Material Extrusion (MEX)-based Additive Manufacturing process. The parameters studied include printing nozzle temperature, flow percent or extrusion multiplier and nozzle diameter of print head. The 316L feedstock filaments are based on Emery Oleochemicals’ evolutionary binder system, which has been used in MIM for more than thirty years. The partner in the study for debinding, sintering and mechanical testing is CMG Technologies Ltd, UK. ... Read more »
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