Fire bricks for metallurgical furnaees, whefe very, high temperatures must be withstood, now are made with gteel jackets. Previous types of bricks for use undef severe temperature con.ditions were physically ' weak, and their use was ,thus limited. The new bloclcs, after' being moulded under high pr'essure, are encased in three sides in a "jacket of heavy , steel, then - laid in tH'e furnace so the wall 'is lined with a complete lattice of steel. In use,. the edges of the steel -melt and f use with the bri'ek it'self, forming a highly resistant surface. A' short distance baclc from the heated face, however, Jhe steel Temains intact, adding' greatly to the strength of the wall.
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https://paperspast.natlib.govt.nz/newspapers/HBHETR19371104.2.82.3
Bibliographic details
Hawke's Bay Herald-Tribune, Volume 81, Issue 35, 4 November 1937, Page 6
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114Page 6 Advertisements Column 3 Hawke's Bay Herald-Tribune, Volume 81, Issue 35, 4 November 1937, Page 6
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