Casting blank artificial defect manufacturing method, artificial defect steel rail and defect analysis method

The invention discloses a casting blank artificial defect manufacturing method, an artificial defect steel rail and a defect analysis method, and the method comprises the steps: preparing a casting blank with artificial hole groove defects, and carrying out the comparative analysis of the surface defects of a steel rail finished product produced by the casting blank and the artificial defects on the surface of the casting blank. Therefore, the surface defect inheritance relationship between the steel rail with the artificial defect and the casting blank with the artificial defect is determined, and the defect on the steel rail is successfully traced back to the casting blank by utilizing the inheritance relationship, so that technicians are helped to quickly and accurately position the defect position on the casting blank, pre-estimate the defect size on the casting blank and select a proper defect coping strategy; and the yield of rolled finished products is effectively improved. In addition, it is verified