Apparatus for monitoring temperatures of implements during brazing.

摘要

Disclosed is an apparatus for monitoring the temperature of an implement being brazed to a workpiece. The preferred implement is a polycrystalline diamond composite compact which is brazed to a drill bit or other workpiece. The apparatus comprises an insulated a temperature probe comprising a stiff support rod (46) of predetermined length with a first passageway therethrough. An insulating handle (42) is connected in supporting relationship with the rod and has a second passageway therethrough which communicates with the first passageway. A heat shield (44) is disposed about the handle in the vicinity of its connection with the base portion of the rod. A thermocouple means (54) for generating signals correlative with temperature is disposed at the rod tip and energized from leads extending to an alarm unit (12). The alarm unit includes a power supply and a circuit which carries out a comparator function for energizing an annunciator when proper braze temperatures commence and further energizing the annunciator function to signal excessive temperature at the braze. A method provides using the apparatus disclosed herein.