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Edward Lowton
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Enlarged pit furnace
13 November 2013
Anticipating growing customer demand for processing larger gears, shafts and other components, sub-contract heat treatment specialist Keighley Laboratories has enlarged one of its pit furnaces, increasing dimensions to 1110mm working diameter and almost 1800mm maximum length, in the process gaining 30% in overall capacity.
At the same time, it upgraded the lifting capacity of its overhead crane, which services all seven pit furnaces, a salt bath and tempering equipment, to 3t maximum lift.
Enlarging the No 1 pit furnace involved fabricating a custom-made inner shell or retort, made from exotic duplex stainless steel, but the investment has already been offset by orders for heat treating 1108mm diameter gear wheels for an offshore application and 1755mm long, 1t shafts for a renewable energy project.
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