STEEL MATERIAL COOLING METHOD STEEL MATERIAL MANUFACTURING METHOD STEEL MATERIAL COOLING FACILITY AND STEEL MATERIAL MANUFACTURING FACILITY

摘要

It is an object of the present invention to provide a cooling method of a steel material which promotes cooling of a bottom surface of a steel material and which can obtain a material of high strength and high toughness and which does not cause warping during cooling. The steel material is placed in a water tank storing water at least 20 times as large as the steel volume so that the inclined angle from the horizontal plane in the short side direction of the light side of the steel material is 15 degrees or more and 45 degrees or less, And then the steel material is immersed.