[概要]本发明是一种关于铸坯高温矫正的方法。它是在处于导入辊最下段正前方的矫正辊的正前方,急冷铸坯表面,在铸坯通过矫正辊的那一点,使之急速回热到150～250℃;借助热膨胀,使之补偿关系到铸坯的矫正变形应力,从而达到预防铸坯裂纹缺陷的目的。[原来技术]用连铸机铸造的铸坯,因为在脆性温度区域进行矫正,所以在铸坯上表面产生了拉伸应力。因为这一拉伸应力超过了 [Summary] The present invention is a method for high-temperature straightening of a slab. It is in front of the correction roller just before the lowermost stage of the lead-in roll and the surface of the slab is rapidly quenched, so that the slab rapidly recuperates to 150 to 250 ° C at the point where the slab passes the correction roll; by means of thermal expansion, To the billet straightening deformation stress, so as to achieve the purpose of preventing slab cracks. [Prior Art] A slab cast by a continuous casting machine produces tensile stress on the upper surface of the slab because it is straightened in a brittle temperature region. Because of this tensile stress exceeded