Heat treatment carburizing or carbonitriding inspection device

The utility model discloses a heat treatment carburization or carbonitriding inspection device which comprises a signal connecting seat and an inspection main body, a reference gas sealing cover and a charking gas sealing cover which are used for sealing work are respectively arranged on two sides above the inspection main body, and the lower end of the inspection main body is provided with the signal connecting seat used for signal output and supporting work. By pulling a cylindrical handle outwards, a cross-shaped insertion column slides outwards in an anti-falling seat and a fixed through hole, so that the cross-shaped insertion column is separated from a fixed insertion hole, a probe can slide in the flange main body conveniently, and then the probe can be inserted into the flange main body through stretching and retracting of a telescopic spring. According to the probe height adjusting device, the cross-shaped inserting columns can slide inwards in the anti-falling bases and the fixing through holes, the