Lamellar tear

Analysis of the Types and Basic Characteristics of Welding Cracks With the development of steel, petrochemical industry, ship and electric power industry, the welding structure tends to be large-scale, large-capacity and high-parameter, some also work in low temperature, cryogenic, corrosive media and other environments. Therefore, all kinds of low-alloy high-strength steel, medium and high-alloy steel, super-strength steel, as well as a variety of alloy materials are increasingly widely used. However, with the application of these steels and alloys, there are many new problems in welding production, and the most common and serious one is welding crack. Cracks sometimes occur during welding, sometimes during placement or operation, and so-called delayed cracks. Because this kind of crack can not be detected in the manufacture, the harm of this kind of crack is more serious. There are many kinds of cracks in welding process. According to the present research, according to the nature […]