Influence of die coating on forming of micro-parts by forward-backward extrusion

N. Takatsuji, K. Dohda, T. Makino, T. Yoshimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recent trend towards miniaturization of products and technology has produced a strong demand for such metallic micro-parts with extremely small geometric features and high tolerances. Conventional forming technologies, such as extrusion and drawing, have encountered new challenges on the micro-scale due to the influence of 'size effects' that tend to be predominant at this level. One of the factors that show a strong influence is friction. A novel experimental setup consisting of forming assembly and a loading stage has been developed to obtain the force-displacement response for the extrusion of pins made of aluminum. This paper also investigates the validity of using high-strength/low-friction die coatings to improve the tribological characteristics observed in micro-extrusion. All of the various coatings were used in the micro-extrusion experiments, and worked satisfactorily to reduce the friction. The DLC-Spatter-coating produces the least friction and therefore has the lowest extrusion force.

Original languageEnglish (US)
Title of host publication9th International Conference on Technology of Plasticity, ICTP 2008
PublisherHanrimwon Publishing Co.
Pages1890-1895
Number of pages6
StatePublished - Jan 1 2008
Event9th International Conference on Technology of Plasticity, ICTP 2008 - Gyeongju, Korea, Republic of
Duration: Sep 7 2008Sep 11 2008

Other

Other9th International Conference on Technology of Plasticity, ICTP 2008
CountryKorea, Republic of
CityGyeongju
Period9/7/089/11/08

ASJC Scopus subject areas

  • Polymers and Plastics

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    Takatsuji, N., Dohda, K., Makino, T., & Yoshimura, T. (2008). Influence of die coating on forming of micro-parts by forward-backward extrusion. In 9th International Conference on Technology of Plasticity, ICTP 2008 (pp. 1890-1895). Hanrimwon Publishing Co..