Abstract:

Using experimental optimal design method, nine concave surface morphologies were designed on ring model with different concave sizes and distributions. Laser graphic texturing was applied to treat process the bionic concave surface micro-morphology on the ring model. The anti-wear capacity of the ring model was investigated. Under the same conditions, comparative experiments were conducted on smooth model and concave model. The wear values and wear rates were determined by weighing the samples before and after the experiments. The wear values and wear rates of ten different samples were analyzed. By orthogonal experimental design, the range analysis was adopted to evaluate anti-wear properties the nine bionic samples. Under lubrication condition, the anti-wear properties of the concave models were better than that of the smooth model. The morphological parameters of the best anti-wear bionic model were obtained as follows; the concave diameter is 100 μm, the transverse space between two concaves is 450 μm, and the longitudinal space is 350 μm.

Key words: engineering bionics, anti-wear, wear value, wear rate, orthogonal experimental design