INCREASING MATERIAL DURABILITY FOR DROP HOT FORGING

The paper concentrates on the research of technological - metallurgical processes of X37CrMoV5-1 (CSN 41 9552) steel grade type produced in the medium frequency induction furnace. Ways of achieving higher material durability are determined by the modification possibilities of tool steel chemical composition, mainly by modifying carbon, molybdenum and tungsten content. Other possibilities how to increase abrasion resistance of the basic metal matrix with the given chemical composition can be found in making use of the different ways of heat processing of a forged piece by methods, increasing resistance to abrasive action of the flowing metal in the die cavity. The accepted ways of solving the durability problem must predict lower economic costs compared with the standard material of X37CrMoV5-1 steel grade type.