Method for quickly checking transverse cracks on surface of slab

The invention discloses a method for quickly checking transverse cracks on the surface of a slab. The method comprises the following specific steps: cooling a continuous casting slab, cleaning a checking belt, checking and confirming. According to the method for rapidly inspecting the transverse cracks on the surface of the slab, the continuous casting slab is cooled, the inspection belt is cleaned, and inspection and confirmation are conducted, only two hours are needed from the end of cutting of the continuous casting slab to inspection of whether the transverse cracks exist on the surface or not, the inspection efficiency of the continuous casting slab is improved, and a large number of continuous casting slabs can be rapidly inspected; according to the continuous casting slab inspection device, the working efficiency of people is improved, the continuous casting slab can be inspected without special devices, special equipment or special materials in the whole inspection process by cooling the continuous c