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    12th International Conference on Zinc & Zinc Alloy Coated Steel Sheet - GALVATECH 2021

    21–23 Jun 2021 Virtual Conference
    Virtuel Conference
    Europe/Vienna timezone
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    Session

    HDG Coating Formation & Dross Management

    22 Jun 2021, 16:10
    Virtuel Conference

    Virtuel Conference

    Conveners

    HDG Coating Formation & Dross Management

    • Alexander Mertke (Boliden Commercial Deutschland GmbH)
    • Sarah Zhang

    Presentation materials

    There are no materials yet.

    1. 157. INFLUENCE OF Al CONTENT IN THE ZN BATH ON GALVANIZED COATING FORMATION OF HIGH STRENGTH STEELS
      Henrique Eleuterio (Usiminas)
      22/06/2021, 16:10
      HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight Control
      Oral Presentation
      The control of Al content in the bath of molten Zn in Continuous Galvanizing Lines (CGL) allows to improve the surface quality of coated products, particularly in the case of galvanized (GI) coating, to minimize the precipitation of Fe-Zn intermetallic particles in the bath, named dross particles, and to improve operational efficiency by increasing the process velocity. The control of Al...
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    2. 155. OPTIMAL CONTENT OF ALUMINUM IN ALUMINUM-ZINC ALLOY IN HOT-DIP COATING ON THE STEEL STRIP
      Sergey Yashchuk (JSC Severstal Management)
      22/06/2021, 16:30
      Zinc-Aluminum-Magnesium and Zinc-Aluminum Coatings for Non-Automotive Application
      Oral Presentation
      Currently, the optimum aluminum content in the alloy for Aluminum-zinc coating considered wt.55%. In addition to aluminum and zinc, the alloy contains 1.6 wt.% Silicon, which is introduced to suppress the exothermic reaction of the melt with iron. Cold-rolled steel coils with such a coating, has gained wide popularity and produced in many countries of the world. A coating with 55% aluminum...
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    3. 50. A MODELING FRAMEWORK FOR TOP SKIMMING FORMATION IN GALVANIZING BATH
      Kintak Raymond Yu (National Research Council Canada)
      22/06/2021, 16:50
      In-Line Measurements and Quality Control
      Oral Presentation (*)
      In continuous galvanizing line operations, the thickness and the uniformity of the zinc coating are governed by the gas jet wiping process; a complex multi-phase, multi-scale phenomenon. Though efficient, the process leads to the undesired top skimming formation. To better understand the intricate interactions among the moving strip, the unsteady turbulent jet, the falling excess liquid zinc...
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    4. 123. CFD-DPM MODELLING AND ANALYSIS OF DROSS PARTICLE DYNAMICS IN HOT-DIP GALVANIZING BATHS
      Werner Eßl (Materials Center Leoben Forschung GmbH)
      22/06/2021, 17:10
      HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight Control
      Oral Presentation

      The surface quality of galvanized steel sheets is considerably influenced by intermetallic dross particles, which inevitably form during operation. η-phase Fe2Al5 top dross and δ-phase FeZn7 bottom dross particles have been reported to be entrapped into the coating causing functional and optical defects. Moreover, particles are frequently mentioned to adhere to the stationary and the moving...

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    5. 174. HDG POT PRODUCTIVITY
      Matthieu Didier (ArcelorMittal)
      22/06/2021, 17:30
      HDG Process Technology - Furnace, Galvanizing Bath, Coating Weight Control
      Oral Presentation

      During production of galvanized products, the Hot Dip Galvanizing bath is managed with additions of ingots allowing to guaranty the stability of the bath level and composition. Hot Dip Galvanizing pot productivity (in kg/h) is then defined as the amount of materials melted in the pot during a given time. The pot productivity is generally monitored to maintain the HDG bath at a stable level and...

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