- 29. september 2022
14:00 SMS group GmbH - Production Part Tracing Along The Forging Process Chain14:00 - 14:30Martin Gerhard Scholles - SMS group GmbH
Measure, record, and verify the carbon footprint for every forging with a precise CO2 value. Instead of major recall campaigns, quality issues can now be narrowed down to just a few individual forged products to facilitate the root cause analysis. Identify new optimization potential along the entire process and value chain. Those are the key benefits of iForge Traceability for closed-die forging.
As an essential element of Digitalization and Industrie 4.0, SMS group has developed a strategy and the related process for complete traceability of individual forgings along the overall closed-die forging process chain to ensure that all production, material and quality data being acquired during the process will be stored and linked to the specific production part. Product traceability is the key to building a closed loop with integrated condition and quality checks within and between each process step.
14:30 Acciaierie Venete S.p.A. - Influence of Different Final Electromagnetic Stirrer (F-EMS) Parameters on Internal Quality of Continuous Casting Products14:30 - 15:00Ricardo Ottini - Acciaierie Venete S.p.A.
In continuous casting steelmaking, a growing demand for better quality products set new challenges in ensuring excellent properties in cast steel. This is especially true for long products either intended for rolling or for heavy forging. The most important quality indicators (QIs) for long products such as blooms, billets and rolled bars are internal chemical homogeneity, absence of pinholes and blowholes as well as surface, subsurface and internal cracks, lack of centreline segregation, centre porosity and V segregation.
All the aforementioned features can be achieved through the correct management of the process parameters of the continuous casting machine. Specifically, a proper electromagnetic stirring in optimal positions of the metallurgical length of cast product helps to reach a better solidification structure: acting in the mould (M-EMS), lower in the strand (S-EMS) and towards the end of the metallurgical length (F-EMS).
The aim of this research work is to present the introduction and optimization of the correct parameters for the control of F-EMS recently installed on the large round sections - three strands - continuous casting machine (for heavy sections blooms, i.e., from ø350 mm to ø600 mm) in the Padua plant of Acciaierie Venete group. In particular, two cases are here described: for as-cast materials a medium carbon steel (42CrMo4) cast in round section ø420 mm, while for rolled material a high carbon steel (100Cr6) cast in round section ø500 mm and rolled in final section ø120 mm. The technological parameters of the F-EMS that have been adjusted are current (A), frequency (Hz) and rotational direction (one way or alternate mode). The products have been ranked using macro-etching examinations (both parallel and perpendicular to casting direction) and chemical analysis (OES-PDA and combustion elemental analysis). Finally, thanks to the illustrated experimental results, it has been possible to identify the best operational set-up to apply.