Abstract
The “step cooling method” was studied. In this method, the “water cooling” and the “natural cooling” were repeated alternately. The results obtained are as follows:
1. The method can prevent the bending of steel products caused by the forced water cooling.
2. With this method, one can control the cooling effect.
3. And the nozzel troubles by interruption are decreased.
4. Other conditions being the same, the total amount of the cooling water, necessary to cool the steel products for a definite temperature difference, is proportional to its flow rate.
5. With equal duration of “water cooling” and “natural cooling” the total time to cool the steel products for a definite temperature difference, depends on their repeating period.
