Abstract
Modern development of the machine-building industry is associated with improving the quality of finished products and reducing the cost of their production. In modern foundry production, steel with the original structure often does not meet the requirements without additional processing or any additional effects on the processes in their manufacture. Currently, there are quite a lot of ways to improve the quality of metal in production, affecting it at the stage of crystallization. You can adjust the properties of the finished metal already at the initial stages of preparation – by external influence on the melt. By varying the modes and methods of processing the melt, you can change the structure and properties of the metal in a wide range. The introduction of alloying and modifying elements in the melt often leads not only to positive, but also to negative side effects, many elements have a negative impact on the metal. When this occurs, the increase in the cost. The use of external physical and thermal effects on the melt allows to significantly improve the properties of the metal without getting into it undesirable impurities, as occurs during alloying and modification.
The influence of external complex effects on the structure and properties of castings made of steel grade 35L. Developed modes of high-temperature processing, the parameters of nanosecond electromagnetic pulse in the process of crystallization, the modes of thermal aging. The influence of metal overheating, nanosecond electromagnetic pulse, thermal aging on the structure and mechanical properties of castings is revealed. The results of changes in the properties of products through the use of optimal modes of external complex effects.
Keywords
High-temperature processing, structure, steel, nanosecond electromagnetic pulse, hardness, wear resistance, toughness, strength.