A NEW ON-LINE BAR JOINING TECHNOLOGY FOR ENDLESS HOT ROLLING

  • Lee, Jong-Sub (Steel Process & Automation Research Team, RIST) ;
  • Kim, Ki-Chol (Steel Process & Automation Research Team, RIST) ;
  • Won, Chun-Soo (Hot Rolling Technology Team, POSCO) ;
  • Kenji Horii (Technical Development Group, Mitsubishi-Hitachi Metals Machinery, Inc.) ;
  • Talmo Funamoto (Technical Development Group, Mitsubishi-Hitachi Metals Machinery, Inc.)
  • Published : 2002.10.01

Abstract

A new on-line bar joining technology employing the concept of a solid-state joining has been developed for the endless rolling by POSCO, RIST and MHMM Inc.. In the process, the bars are partially descaled, partially overlapped, joined by shearing action and crops are finally removed. The feasibility of the developed process was evaluated in this study in terms of microstructures and mechanical properties of joints, and the response of the joint to rolling.

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