Research of Quality of the Surface of the Charred Materials at Laser Processing

Abstract

Theoretical and pilot researches are carried out for the quality of a surface of the charred materials in dependence of technological operating modes of the laser equipment for improvement of quality of the processed surface of industrial products processed by laser radiation. The obtained analytical expressions don't contradict with the results of imitating modeling and results of an experiment. Coherence of theoretical and statistical results is checked with use of criterion of consent, χ2 Pearson criterion. The performed researches have shown that for assessment of surface quality of materials with carbonization it is optimal to use the depth of penetration of radiation into material, the average value of microroughnesses, the average quadratic deviation of microroughnesses and coefficient of correlation of microroughnesses at change of power of laser radiation. For receiving a qualitative surface layer with the accurate and contrast image, maximum saving the unique natural drawing which compensates the available natural surface heterogeneity, universality of technological modes for materials with carbonization of a surface with any range of transmission and absorption, it is necessary to use the recommended operating modes of the laser machine at the largest admissible power of radiation and speed of engraving.