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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/014/05/1249-1255

    • Keywords

       

      Hi-B silicon steel; laser scribing; domain refinement; power loss

    • Abstract

       

      Non-contact processing technique involving the use of CW and pulsed CO2 laser irradiation has been used for reducing the core loss of cold-rolled grain-oriented silicon steel. Laser scribing perpendicular to the rolling direction resulted in a refinement of domain wall spacing which subsequently reduced the loss of silicon steel. It was found that laser irradiation was more effective in a specimen with higher magnetic induction (Hi-B) and the loss was reduced by more than 10% under optimum conditions of the laser irradiation and the scribing speed. Since laser processing is a non-contact technique, it can be easily applied to the production line of the silicon steel.

    • Author Affiliations

       

      S C Patil1 G Swaminathan1 2 Manoj Kumar1 2 P V Sastry1 2 S B Ogale1 S M Kanetkar1 A Pramanik1 2

      1. Centre for Advanced Studies in Materials Science and Solid State Physics, Department of Physics, University of Poona, Pune - 411 007, India
      2. Corporate Research and Development Division, Bharat Heavy Electricals Limited, Vikasnagar, Hyderabad - 500 593, India

    • Dates

       
      Published
      October 1991
      Manuscript received
      29 December 1990
      Manuscript revised
      23 May 1991

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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