Abstract
By using nanosecond laser material ablation, which is widely used in mechanical micro machining fields. Based on this theory, in the northeast of red pine as the research object, establish the wood ablation heat transfer model, and derive the relationship between laser power density and the depth of ablation. Through simulate internal temperature distribution of wood in the ablation process and ablation depth, using the software, the experimental results are verified with simulation analysis approximation(Bo et al., 2010). After laser ablation wood interior presented regulation of temperature gradient, wood surface appear carbonation phenomenon(Chi et al., 2000). Through this process, with guidance function of the theory to control the actual design of laser parameters, and find reasonable laser ablation area through the ablation depth and laser power density relation, in order to provide theoretical basis for the relief of laser sand mill design.
