gun
v.— «The present invention relates to a process for the repair of blast furnaces. More specifically, it relates to a method of repairing blast furnaces using a vertical remote controlled refractory gunning apparatus.…U.S. Pat. No. 4,649,858 discloses a repairing apparatus for an industrial furnace which comprises a plasma spray gun capable of being moved in a three-dimensional direction relative to the area of the furnace wall to be repaired. By controlling the spray distance of the plasma flame, repairs can be made to uneven areas of damage.…Manual gunning requires a complete shutdown of the furnace. After the furnace has cooled, men must enter the furnace on erected scaffolds and gun the stack at close range.» —“United States Patent 4,860,422″ by Joseph Marino United States Patent and Trademark Office Aug. 29, 1989. (source: Double-Tongued Dictionary)
Further reading
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