Table of Contents

    • 34

    • Modernization of Existing Assets to Meet the Growing Demand for Advanced High-Strength Steels

      Due to the growing demand for advanced high-strength steels (AHSS), particularly from the automotive market, steel producers are faced with a tough challenge. With significant investment required of greenfield projects, many instead turn to modernizing their current assets.  This paper looks at the demand for AHSS and implications of modernizing existing assets in lieu of embarking on new construction projects.

    • 46

    • Surface Chemistry–Based Defects on Steel Sheet, Investigated by SEM/EDS

      Cold-rolled and wet-tempered steel sheet sometimes shows surface discoloration. This occurs in spots, patches or bands, and may have a range of possible causes. The discoloration may be caused by local differences in light refraction or light reflection off the surface. These differences may be caused by subtle oxidation processes, by corrosion resulting in the creation of etching holes or a thin oxide layer, by surface reactions, by deposition of compounds other than oxide or by a coating defect. Several field cases are discussed.

    • 58

    • Composite Technologies for Corrosive Fluid Processing Applications

      This paper discusses and compares various piping system composite technologies available for use in corrosive fluid processing applications such as pickle lines. Raw material and component design characteristics, composite manufacturing processes that impact durability and strength, application utilization, selection criteria, as well as safety and reliability aspects of composites, are also covered.

    • 62

    • Development of Tension Leveler for Advanced High-Strength Steel

      The production of advanced high-strength steel requires rapid cooling, which results in undesirable flatness and/or excessive residual stress of products. Those defects cause adverse effects to automobile production processes. Therefore, high-performance levelers are required for eliminating those defects. JP Steel Plantech Co. has developed a new tension leveler to meet market demands. This paper discusses the new tension leveler.

    • 68

    • Methodology to Quantify Objectively the Coating Weight Uniformity

      After a brief review that demonstrates the limitation of the Zn gauge sensitivity to strip vibration, a standard easy-to-run methodology is proposed to compute not only the standard deviation per side but also quantities in relation to strip shape, nozzle adjustment, and other process and product parameters. The results obtained on two high-class galvanizing lines with campaigns of five days are presented.