| 摘要 |
<p>The purpose of the present invention is to provide a steel material cooling method that not only promotes cooling of the bottom surface of a steel material in order to achieve such material properties as high strength and high toughness but also does not cause warpage during cooling. This steel material cooling method is characterized in that a steel material is immersed in a water tank holding an amount of water that is at least twenty times greater than the volume of the steel material, in a manner such that, assuming that the broad-surface parts of the steel material constitute the top and bottom surfaces, the direction of the short side of the broad-surface parts of the steel material forms a tilt angle of between 15º and 45º with respect to a level plane.</p> |
