PURPOSE: To decrease a data processing quantity and to make a computer small- sized by providing a material temp. detector and means for temp. pattern recognition and for speed pattern determination in the titled device to regulate the speed of a transfer table passing through heat treatment equipment.

CONSTITUTION: A temp. on a line is measured in the direction of a point or width of a material 2 transferred by a transfer tabel 1 passing through a heat treatment equipment 3 and the temp. distribution over the total length of the material is obtained with the execution of the correction of a differential temp. measuring time. A temp. pattern recognition block 14 of a subordinate controller 10 of the titled device catches in macro the temp. distributing pattern in the itranfer direction and classifies based on the temp. data of after the correction. A speed pattern deciding block 15 decides the speed pattern of the table according to the temp. distribution pattern. A part of the function of a process calculator 20 can thus be shared and the speed control of the table as a control system closed by the command from the calculator 20 is enabled. The processing quantity of the calculator 20 can be reduced so much.