THE INTERNATIONAL ACADEMY FOR PRODUCTION ENGINEERING

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STC G - 2019 Annual Report

The year 2019 was successful for the Scientific Technical Committee STC “G”. Forty-five people attended the STC G winter meeting in Paris in February, and sixty-seven people attended Part II of the STC G meeting held at the 69th General Assembly in Birmingham, UK, in August.

Highlights of the STC G winter meeting in Paris included seven technical contributions, one laboratory presentation, and status updates of the 2019 and 2020 keynote papers. The topics of the technical contributions included process modelling for diamond wire sawing, modelling of grit depth of cut based on wheel topography, the effect of heat treatment on process limits in gear grinding of steel workpiece, the design of grinding cycle to improve dimensional stability of the part, the chip formation in grinding with interrupted cut, the nanostructure of silicon induced by ultraprecision grinding, and the vibration-assisted magnetic abrasive polishing. In the laboratory-presentation, an overview of the research in the area of additive manufacturing at the United Technologies Research Center in East Hartford, USA, was introduced. The progress of the 2019 and 2020 keynote papers was presented, and the contents were all approved. It was also approved that proposals for the 2021 and 2022 keynote papers on “Grinding of Automotive Powertrain Components” and “Grinding Tools and Abrasives” will both be forwarded to the Liaison Committee as future STC G keynote papers. Mr. Wegener, Chairman of STC G, encouraged the audience to present contributions in the next STC G meeting in Part II of the 69th General Assembly in Birmingham in August 2019. Any abrasive-related topics and in particular those on abrasive machining of composites are welcome.

The STC G contributions to Part I of the 69th General Assembly in Birmingham included the keynote paper entitled “Abrasive Processes for Micro Parts and Structures” presented by Mr. Aurich, and 14 regular papers. The keynote paper summarized advancements in abrasive processes for miniaturized products and functionalized parts made of hard and brittle materials. The fundamentals and applications of these processes, which include dicing, micro grinding, micro abrasive blasting, vibration-assisted grinding and magnet field-assisted finishing were discussed in the keynote paper. The paper concluded with a discussion of future trends in the field. The keynote paper was well received. The regular papers presented covered a broad range of topics, including the workpiece thermal behavior in cut-off grinding, profile gear grinding of multi-phase case-hardened steel, the impact of fluid supply on energy efficiency in grinding, the fabrication of free-form optical moulds using a slow tool servo, dressing and its impact on surface waviness, surface finishing of biodegradable stents, modelling of vibratory finishing by discrete element method, hydroplaning phenomenon in high-speed polishing, and stream finishing for mechanical surface treatment.

Highlights of the STC G meeting in Part II of the 69th General Assembly in Birmingham included seven technical contributions, status updates of the 2020, 2021 and 2022 keynote papers, and two proposals for future keynote papers. The topics of the technical contributions included grinding and polishing of additively manufactured parts, effect of polishing kinematics on surface morphology, abrasive machining of ceramic matrix composite materials, a sensory honing tool, grinding of cast iron, high efficiency grinding of hemi-spherical surfaces, and grinding of CoCr for artificial knee joints. Lively discussions of the presentations were, as always, part of the meeting. The success of the 2019 keynote paper was acknowledged. The progress of the 2020, 2021 and 2022 keynote papers was presented, and the contents were all approved. Topics for two future keynote papers were proposed, and both initiatives were well received after intensive discussion. The proposers were encouraged to present further progress of their proposals in the next winter meeting in February 2020, according to the comments and advices from the discussion. The new voting timeline for STC officers was presented and further discussions concerned the CWGs.
Mr. Wegener, Chairman of STC G, encouraged the audience to present contributions in the next winter meeting in Paris in February 2020. Any abrasive-related topics will be welcome. 

Konrad Wegener, Chairman, STC G, 29th of September 2019