Experimental determination of coverage degree dependence on processing modes at shot peen forming

Abstract

The purpose of the paper is experimental determination of the dependence of coverage degree at shot peen forming on processing modes. Shot peening is a promising direction in the field of shaping long panels and skins. This method allows to achieve high accuracy of received contours along with the increased efficiency of the process and implemented strengthening effect that improves the fatigue strength and durability of parts. The required accuracy of the shape is achieved in shot peening with the use of an incomplete coverage degree of the processed surface by shot indents, which indicates the efficiency of the production process. The question of the need for the prediction of the dependence of the achieved coverage degree is important when selecting the processing mode. The method of planning a factorial experiment and calculating the coverage degree based on the measurement of shot indent depths using the three-dimensional optical scanning is applied. The actual dependences of the coverage degree on shot peening modes at shot peen forming are obtained.