Method for assessing the effectiveness of surface hardening processing

Welded joints are the most capricious to the influence of extreme conditions (low temperatures, vulnerable places of highly respected sizes and t. e). This is due to the structures, especially when operating in the fact that during welding in the material of the seam and the near -level zone, the sharp heterogeneity of the chemical composition, structure and defect, which affect the mechanical properties of materials and the operational reliability of the structure, are formed. To reduce the influence of these heterogeneities, various technological techniques are used, such as special welding modes or comprehensive heat treatment. A significant increase in the operational characteristics of welded joints operating in the conditions of alternating loading can be achieved by shock ultrasound processing (UUO).