| 摘要 |
The efficiency of tempering flat or curved glass sheets suspended in a vertical orientation is improved in the type of quenching operation wherein quenching nozzles are arranged on a plurality of nozzle boxes, each of which is pivotable about its longitudinal axis so as to oscillate the nozzles in unison within planes which are parallel to each other. The improvement here achieves optimum heat exchange, with a minimized amount of power consumption for supplying pressurized tempering fluid, by controlling the angular displacement of the oscillating nozzles within an angle of 20 degrees from normal to the portion of the glass sheet surface opposite each respective nozzle.
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