The method for optimizing the forming quality of
metal materials based on collaborative distribution of multi-
laser data belongs to the field of
metal additive manufacturing. The method introduces a regional
thermal inertia coefficient (λ) and a
dynamic energy density compensation factor (κ) as core
control parameters, and constructs a three-level collaborative
control system of "feature awareness-
time sequence decoupling-dynamic feedback". Through an intelligent data distribution
algorithm based on the regional
thermal inertia coefficient (λ), the
stress minimization planning of the joint is realized; by introducing the
time sequence decoupling coefficient (ξ), the
laser start-stop interval is accurately controlled, and the heat accumulation is effectively inhibited; by real-time calculation of the κ factor, the energy of the overlapping area and the abnormal area is precisely adjusted. Combined with hierarchical post-
processing, the problems of joint accuracy, organizational uniformity and performance
anisotropy in multi-
laser printing are solved. The present application is suitable for various
metal materials, realizes the joint error <0.03 mm, the
surface roughness Ra<4 μm, the grain size refinement uniformity, the significant improvement of the
room temperature tensile strength, and the forming efficiency is improved by more than 25%.