The invention discloses a mold composite repair decision-making method and
system based on
laser thermal layer-by-layer interaction, and relates to the technical field of mold repair, and the method comprises the steps: carrying out the three-dimensional scanning of a damage region of a to-be-repaired mold, and recognizing the geometric features of a
damage repair model; carrying out self-adaptive hierarchical planning on the
damage repair area along the
depth direction, and determining an initial
layer thickness for each repair layer; optimized
laser process parameters are generated for the current to-be-repaired layer; performing
laser repair
processing on the current layer, and monitoring thermal parameters and states in the
processing process in real time; dynamically adjusting the
layer thickness of a subsequent repair layer and laser process parameters; and circularly executing until all the repair
layers are processed. The method has the advantages that the subsequent
layer thickness and process parameters can be dynamically adjusted on line, so that the generation of defects such as
thermal damage, deformation and cracks is remarkably inhibited, finally, the synchronous improvement of the mold repairing efficiency and the repairing quality is realized, and the good matching of the
structure property of a repaired part and a matrix is ensured.