Chapter 22. The Evolution of the Ceramic Welding Process for the Repair and Maintenance of Glass Furnaces

  1. John B. Wachtman Jr
  1. Pierre Robyn1,
  2. Pierre Deschepper1 and
  3. Thad Busby2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310533.ch22

Proceedings of the 49th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 10, Issue 3/4

Proceedings of the 49th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 10, Issue 3/4

How to Cite

Robyn, P., Deschepper, P. and Busby, T. (1989) The Evolution of the Ceramic Welding Process for the Repair and Maintenance of Glass Furnaces, in Proceedings of the 49th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 10, Issue 3/4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310533.ch22

Author Information

  1. 1

    Glaverbel

  2. 2

    Fosbel

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374849

Online ISBN: 9780470310533

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Keywords:

  • frontwall;
  • periscope;
  • exothermic;
  • endoscope;
  • visibility

Summary

The ceramic welding process is now well established in the glass industry. Developments have occurred which improve and increase the range of applications. In this report several different industrial experiences are discussed:

  • –Periscope assistance of a silica crown repair where the full extent of damage could not be seen from outside the furnace.

  • –Periscope assistance of a crown/frontwall joint repair which could otherwise not clearly be seen due to flame length.

  • –Doghouse arch repair in which the periscope facilitated optimization of the weld tip distance.

  • –Experience with a periscope in a U.S. repair to backwall, tuckstones, doghouse corners and regenerator port faces.

  • –Use of a new AZS mass for repair of an uninsulated doghouse arch.

  • –Repair of an insulated doghouse arch.

  • –An AZS mass used to rebuild a missing port arch face.

  • –Rebuilding of a collapsed endwall where AZS block had tumbled into an endfired tank leaving only the fireclay bricks.

  • –A low temperature AZS mass for external repair of a crown joint.

  • –External repair with a low temperature AZS mass of an uninsulated AZS doghouse arch block.

  • –Sealing sides, crown and underport areas of these ports by external welding to eliminate sting-outs.

  • –Securing of backwall glass contact refractories from both inside and outside the furnace.

  • The ceramic welding process has been used very successfully for a wide range of repairs. Improvements continue to be introduced and development work continues in an effort to improve the flexibility and durability of the process.