PIM International September 2017

Page 34

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Industry News

Taisei Kogyo highlights nanoscale porous MIM products and improved surface finishes

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Do you get sufficient support from your feedstock supplier? Do you get technical service support from A to Z? PolyMIM, provides you with technical support until your process is finished! PolyMIM GmbH is a manufacturer, that offers two different binder systems for metal injection molding: • polyPOM – our catalytic binder system • polyMIM – our water soluble binder system These two binder systems have excellent characteristics during the production process and combine attractive prices with worldwide availability. Our portfolio includes products for mass production for the telecommunication and automotive industries as well as the highend sector with our special alloys. Please be informed that PolyMIM is participating from 1st to 4th of October at EuroPM2017 in Milano, Italy. You’re Welcome to visit us at our exhibition booth #63 PolyMIM GmbH Am Gefach 55566 Bad Sobernheim, Germany Phone: +49 6751 85769-0 Fax: +49 6751 85769-5300 Mail: info@polymim.com

www.polymim.com

A LEGACY OF PRECISION SINCE 1977

Japanese Metal Injection Moulding specialist Taisei Kogyo Co. Ltd., based in Osaka, has recently highlighted two product application areas that rely on some unique features of the company’s proprietary µ-MIM technology. The first of these application areas relates to the development of nanoscale porous metal products. Specific surface area is an essential design parameter, for example in electrode or cooling parts, since specific surface area per unit volume affects performance. High specific surface area is a feature of porous metal. Taisei Kogyo has carried out joint research with Tohoku University Advanced Institute for Materials Research (AIMR) and has established a mass production process for bimodal porous metals with a pore structure consisting of micrometre and nanometre scale pores (Fig. 1). Using this process, a specific surface area of 100 m2/g has been achieved. The second application area relates to achieving fine surface finishes in µ-MIM parts. A satin or matte finish is generally considered to be the standard finish of MIM product surfaces; however, if smaller or finer metal powders are used, smoother surfaces can be realised. According to the company, feedstock preparation, injection moulding and sintering deformation control are all made more challenging with finer metal powders. Despite these considerations, the company has successfully developed its µ-MIM technology to utilise single-μm or sub-μm metal powder in mass production. Using this process, the surface finish parameters achieved can be as low as Ra=1 µm and Rz=7 µm. www.taisei-kogyo.com

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Powder Injection Moulding International

Fig. 1 Image of bimodal porous metal having specific surface area of 100 m2/g

September 2017

© 2017 Inovar Communications Ltd

Vol. 11 No. 3


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