SSI Sintered Specialties, LLC can trace its roots back to the earliest days of Powder Metallurgy in the US. True to its name, that company has over the decades found success through specialisation, in particular stainless steel PM products. This is a theme that continues today, with the company now expanding its horizons through the development of large Metal Injection Molding parts using innovative feedstock technology, and the adoption of metal Binder Jetting. Bernard North visited the company on behalf of PIM International and reports on its plans to remain at the forefront of metal powder based parts production.
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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.
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The dramatic growth of China’s Metal Injection Moulding industry over the past decade has not only seen MIM producers thrive, but it has driven major investments in metal powder production capabilities. One of the biggest success stories is that of Jingye Lide Additive Manufacturing Co., Ltd., a company whose production has grown from 50 tons of atomised powder in 2009 to 4,000 tons in 2020. It is planning to increase capacity to 40,000 in the near future. Dr Chiou Yau Hung (Dr Q) reports on a recent visit to the company for PIM International.
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MIMplus Technologies has a proven track record in MIM materials, process and application development. Now, the company is further increasing its market reach and production capability through research-driven material and process developments. As Dr Georg Schlieper explains, the first of the company’s two main areas of current innovation is the production of NdFeB hard magnets, using recycled materials, by MIM. The second is in sinter-based Additive Manufacturing, where MIMplus is working closely with Germany’s Headmade Materials and Israel’s Tritone Technologies on the commercial development of their very distinct production processes.
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BASF SE, the market leader in feedstocks for Metal Injection Molding (MIM), has expanded its feedstock range with the release of Catamold® motion 8620, a low alloy steel feedstock suited to high performance automotive applications. In this paper, the company’s Marie-Claire Hermant, Rudolf Seiler, and Thorsten Staudt introduce the new feedstock and the strategy behind the move to pre-alloyed, water atomised powders. The properties and performance of the new system are compared with those of the company’s existing Catamold 8620 that uses the master alloy approach.
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Whilst many MIM companies choose to purchase commercially available ‘off the shelf’ feedstocks, a significant proportion continue to manufacture their own – or use both routes. Motives can range from a desire to use a proprietary binder composition for specific applications, to simple cost savings. What is critical is that in-house produced feedstocks are manufactured to the highest quality and with excellent batch-to-batch repeatability. In this article, Grant Jamieson, Managing Director of Winkworth Machinery Ltd, reviews the process of mixing, extruding and pelletising MIM feedstocks and introduces a specially-developed machine that combines these three operations.
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