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Dr Paul R. Provencher (Polytechnique Montreal)21/06/2021, 17:30Challenges in Galvanizing Advanced High Strength Steels (GI, GA,…)Poster (*)
The work studied the effect that processing parameters have on microstructure and mechanical properties of dual-phase steel grade 980. This was achieved by subjecting steel coupons to various annealing cycles featuring different heating rates, cooling rates and intercritical annealing temperatures using a dilatometer. Following heat treatments, the microstructures and mechanical properties of...
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Yuki Takeda (JFE Steel)21/06/2021, 17:32In-Line Measurements and Quality ControlPosterThe Zinc Alloy Coated Steel Sheets are mainly used for the plates of Automotive. Especially, the interstitial free steel is used to the outer panel and it is manufactured by press forming in the process of automotive manufacturing. The materials are needed of high formability because the press formed parts have some complicated shape, therefore high elongation of mechanical properties are...Go to contribution page
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Juliana Porto Guimarães (Usiminas)21/06/2021, 17:34HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight ControlPoster (*)The steel surface condition after continuous annealing is extremely important to the quality of galvannealed coating (GA). The presence of oxides can affect the reactions at the coating/substrate interface and decrease the zinc wettability on the steel surface. To avoid oxidation, a protective atmosphere is used during the annealing. Despite this, it is possible the selective oxidation occurs...Go to contribution page
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Ms Se-Young Oh (POMIA (Pohang Institute of Metal Industry Advancement))21/06/2021, 17:36Zinc-Aluminum-Magnesium and Zinc-Aluminum Coatings for Non-Automotive ApplicationPoster
Iron is corroded by various factors such as moisture, salt and air exposure, causing problems in the building's exterior and structure. To solve this problem, studies have been continued about rust-resistant iron. Most of the galvanized steel used for outdoor applications are coated again painting on the galvanizing layer. More than that, Magnesium-added Zn-Al-Mg coated steel sheet is...
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Suk Kyu Lee (POSCO Technical Research Lab.)21/06/2021, 17:38Zinc-Aluminum-Magnesium Coatings for Automotive ApplicationPosterRecently, the demand for high strength hot-dip galvanized steel sheet is continuously increasing due to light weight and safety of automobiles. However, in the case of hot-dip galvanized steel sheet, it is found to have a problem that LME(Liquid Metal Embrittlement) cracks occur during welding process, therefore it is limited to supply to the automakers. The hot dip galvanized steel sheet...Go to contribution page
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130. KINETICS OF WÜSTITE FORMATION IN SHORT TIME ON PURE IRON IN THE GAS MIXTURE OF CO2+CO OR H2O+H2Soroush Aghaeian (Department of Materials Science and Engineering, Delft University of Technology)21/06/2021, 17:40Fundamentals on Gas - Metal Interfacial ReactionsPosterOne of the challenges on the development of new steel products is the possibility to predict or control surface behaviour through-process. The lack of prediction, together with the difficulty on simulating the behaviour of the surface in pilot processing, lead to the evaluation of the product after costly industrial trials. Therefore, knowledge on the kinetics of oxide formation on steels is...Go to contribution page
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Moon Hi Hong (POSCO C&C)21/06/2021, 17:42Consumer Electronics Application - Forming, Joining, Painting and Final PropertiesPosterIn the past, both galvanized (GI) and galvannealed (GA) steel sheets with white color coating produced by continuous coating line (CCL) has been widely used for home appliance such as refrigerator, washing machine and air conditioner. On the other hand, in premium home appliance market, either mechanically polished or physical vapor deposited (PVD) stainless steel sheets was used due to their...Go to contribution page
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Georg Reiss (Materials Center Leoben)21/06/2021, 17:44HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight ControlPoster (*)This paper presents a CFD simulation study of the influence of roughness on the flow near stationary and rotating bath equipment. During production, the roughness of bath rolls is significantly increased by dross build-up. The latter is one major reason for undesired maintenance cycles. Understanding the interaction between roughness and zinc flow facilitates the interpretation of dross...Go to contribution page
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HEUNG YUN KIM (POSCO / Technical Research Laboratories)21/06/2021, 17:46Zinc-Aluminum-Magnesium and Zinc-Aluminum Coatings for Non-Automotive ApplicationPosterZnAlMg-based alloy hot-dip galvanized steel sheet, as known, has high corrosion resistance. Also, several types of composition systems are commercially produced and applied to various fields. However, these steel sheets characteristically contain up to 3% magnesium. The improvement of corrosion resistance is the attractive point of the product and the goal to pursue forever. In recent years,...Go to contribution page
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Jong Beom Lee (HYUNDAI STEEL)21/06/2021, 17:48Product Modifications on Metallic Coatings (Spangle Size, Solidification Path, Interface Layers, …)Poster (*)Al-Si coated steel is required to have a beautiful surface according to the application, and spangle size is one of the important factors to satisfy this. To control the Spangle size, Various studies have been conducted. In this study, Conditions of Spangle Minimizer which is using the Al powder spraying method after Al-Si pot were investigated, which is one of the methods to control the...Go to contribution page
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Hugues Guerault (Bruker AXS, GmbH)21/06/2021, 17:50Structure and Surface Analysis as well as Defect CharacterizationPoster (*)
A fast and non-destructive method based on X-ray diffraction for phase quantification in zinc alloyed coatings is presented. Post-annealed hot-dip galvanized steel sheets may contain various Fe/Zn alloys (Γ-Fe3Zn10, Γ1-Fe11Zn40, δ-Fe13Zn126, ζ-FeZn13) arranged in a layered conformation and with a predictable stacking order. Each phase within the coating has a different crystalline structure...
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Thierry Robin (Fivesgroup)21/06/2021, 17:52New Technological ConceptsPoster (*)
In continuous galvanizing lines (CGL), strip annealing temperature is, though not the only one, the most significant physical parameter in the annealing process and therefore is used as the main indicator for product qualification. Annealing furnaces today are mostly regulated by Proportional Integral Derivative (PID) controllers or with the help of static based models. Those methods, though...
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Bora Park (POMIA (Pohang Institute of Metal Industry Advancement))21/06/2021, 17:54Zinc-Aluminum-Magnesium and Zinc-Aluminum Coatings for Non-Automotive ApplicationPosterA steel is used in all industries because it has many advantages such as high strength, easy workability and high-quality paintability. Nevertheless, steel can not be used for a long time due to the occurrence of rust caused by various factors. In order to improve the corrosion resistance of steel, the development of a high corrosion resistance steel with Mg and Al is being studied. Also, we...Go to contribution page
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Can Ergun (Primetals Technologies Austria GmbH)21/06/2021, 17:56New Technological ConceptsPoster (*)
Through-Process Quality Control is a quality system intended to cover the entire production line, from the liquid phase to the finishing and packaging lines of the final end product. The term “Through-Process” has been coined to specifically emphasize this idea. TPQC is a quality management system for steel production, which helps to continuously monitor and to manage quality across all...
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Markus Ringhofer (Primetals Technologies Austria)21/06/2021, 17:58New Galvanizing Lines with Innovative Solutions and New Technological ConceptsPoster (*)The production of galvanized coils requires stable operating conditions for achieving sustainable product quality. In order to reach stable operation conditions for high quality products it is essential to prepare the production process according certain constraints. Those constraints include building schedules with a coffin shape ensuring that width and thickness changes are within certain...Go to contribution page
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Tobias Klinkberg (Salzgitter Mannesmann Forschung)21/06/2021, 18:00HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight ControlPosterIn the present study Computational Fluid Dynamics (CFD) were used to design a new air-knife for the hot-dip galvanizing simulator of Salzgitter Mannesmann Forschung in order to improve the flow field inside the knife and at the nozzle exit. The overall objectives were to improve the surface quality of coated samples and enhance coating control capabilities compared to the existing air-knife by...Go to contribution page
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Georg Reiss (MCL)21/06/2021, 18:02Fundamentals on Solid - Liquid Interfacial ReactionsPoster (*)The present paper presents a front tracking interface numerical model for the simulation of facetted crystal growth, taken into account the incidence of flow. This model was applied to the build-up growth (Fe2Al5 faceted crystals) occurring during the production of Zn coated steel sheets (Galvanizing industry) on the bath hardware. In the galvanizing industry their occurrence is a problem and...Go to contribution page
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Mr Alexandre Nadeau (Tecnar Automation Ltee)21/06/2021, 18:04In-Line Measurements and Quality ControlPoster (*)
With ever increasing targets on productivity, unpredictable down times caused by a weld break can become an important problem. Lately, partly because of drivers like the rise of multiple high strength steel grades and the retirement of highly experienced operators, we have seen CGL lines experience an increase in weld break events. Technologies like pressure sensors, current sensors, cameras...
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