Iron & Steel Technology

August Issue Now Online

August Issue Now Online

Feature: Long Products, Pipe & Tube Products, AISTech 2014 Conference and Exposition Retrospective, Awards Call for Nominations and more.

Table of Contents

    • 144

    • Cold Finishing Chain Track Technology: Pushing the Limits of Coil-to-Bar Drawing

      Over the past 30 years, Danieli has developed a reliable drawing system based on the chain track drawing unit, which replaces the traditional cam-based system. The chain track system consists of two caterpillar-type chains that rotate at a high, constant speed — ensuring drawing speeds of up to 400 m/minute for non-ferrous materials and up to 180 m/minute for ferrous materials. Up to 48 drawn bars per minute from coil can be produced.

    • 154

    • The Development of Water-Based Lub-ricants for the Production of Seamless Pipe

      New approaches have been developed in designing water-based products to effectively deoxidize and maintain internal shell quality. This paper discusses the development of water-based lubricants to replace borax, thereby decreasing occupational health and safety risks, and lowering maintenance and disposal costs without compromising shell quality and production.

    • 161

    • Bar Code Identification of Pipes and Tubes

      This paper presents decision-making steps to perform preliminary evaluation of the technology and process improvements to prolong bar code survival. Bar code reading technology is discussed, along with implementation of the marking and reading technologies to enable collecting and vectoring process data into a tracking database. Automatic tube identification and tracking benefits are discussed and summarized.

    • 168

    • Complex Profile Gauging

      The argument for on-line, real-time measurement of rolled profiles has never been more important. In these times of high energy costs, environmental considerations and the need to produce a guaranteed high-quality product, rapid feedback on size and shape are crucial in process improvement. Typical profiles that can be accurately measured are rail, I-beams, H-beams, channels, angles, tracks, blades, etc.

    • 294

    • Initial Alumina Formation: Some Addi-tional Thoughts Based on Laboratory and Steel Plant Findings

      The initial formation of alumina was studied in literature in many cases. Based on the behavior of aluminum with regard to FeO in ladle slags and laboratory tests, where aluminum is forced to react with oxygen in steel and the samples are solidified quickly, a hypothesis will be described as to how alumina is initially formed. In this mechanism, the diffusion of Fe into aluminum plays an important role.