Optimization of high strength wear-resistant plate technology
Different processes and production concepts can produce different grades of high-strength wear-resistant plates. The metallurgical functions of these processes were compared. A high level of metallurgical technology and a long time of practical experience are the basis for achieving reliable reproduction capacity and optimizing costs, and researchers must predict and evaluate the cost of each process according to the specific situation of the plant.
In general, because of small deviations in metallurgical properties, the chemical composition of microalloy high-strength steel and hydrogen-crack resistant wear plates (HIC resistant wear plates) must have high precision, so that
The center segregation is reduced and the grain size of the microstructure is precisely controlled to ensure effective ductility. In terms of chemical composition, there are several elements that must be considered:
Low carbon content, especially sulfur content;
② High-precision adjustment of manganese content;
③ Application of alloying elements (Cr, Ni, Mb, Cu, Nb, Ti, etc.).
The development of these steel grades began in the mid-1960s, and the development work continues today due to the increasing requirements of users for the mechanical and chemical properties of steel grades. Manufacturers of wear-resistant plates try to adjust their chemical composition to meet these needs, such as reducing carbon content, flexible microalloying and optimizing rolling processes.
