HOT STEEL CUTTING APPARATUS

摘要

A cutting apparatus lights the surface of a moving hot steel material with lamps, locates any flaw with a video camera or the like, scarfs the surface of the steel material adjacent the flaw with a scarfing torch, measures the depth of the flaw with an eddy current detecting probe or the like, estimates accurately the loss of length due to conditioning from the position, size and depth of the flaw with a computer, and cuts the steel material in a predetermined length plus the accurately estimated length corresponding to the loss of length due to conditioning.