| 摘要 |
PROBLEM TO BE SOLVED: To increase supply capability in a fluid supply source for cooling, since the cooling fluid is supplied simultaneously from the fluid supply source for cooling to a plurality of heat-treatment sections, when a set temperature for heating is reduced by the plurality of heat-treating sections. SOLUTION: When the set temperature on the temperature reduction side of a heat plate is to be changed in each heat-treatment unit, the supply of the cooling fluid to each heat-treatment unit is carried out successively, while being shifted in time based on the set temperature of the heat-treatment unit after each change. |
