Abstract: This paper presents an equal-wear surface design method in order to solve the unequal wear problem of large component to be easily worn. The method effectievely makes use of wear failure analysis wear simulating test and material's surface treatment technology. While the design method is dealed with in the paper, the equal-wear surface design of the large thin shell component--the body of paddy-field-tractor (P. F. T) is illustrated. Through field test, it is proved that the new P. F. T. body designed as stated above is not only avoided in the unequal wear phenomenon but also prolonged more than double in its service life.

Key words: 机耕船, 磨损控制设计, 磨损失效分析