Details of mining beneficiation equipment made of medium manganese wear-resistant steel

Abstract

For mining and beneficiation equipment, medium-manganese steel for the production of fast-wearing replaceable parts is proposed. The object of research was the effect of phosphorus on the physical and mechanical properties of austenitic manganese steels with a manganese concentration within the standard for steel 110G13L and below the regulated lower level. Phosphorus more significantly reduces impact toughness, relative elongation and relative narrowing in steels with a lower manganese content than in classic Hadfield steel. In steels with a reduced manganese content, phosphorus has a less effective influences on the tensile strength, and it has practically no effect on hardness. Reducing the phosphorus concentration to 0.025 % and below in 110G8L steel increases its main physical and mechanical properties to the level of 110G10L steel with high phosphorus (recommended for parts subject to abrasive wear). The use of 110G8LA steel with low phosphorus reduces to further reduce the costs of manganese ferroalloys in the production of fast-wearing replaceable parts of mining and beneficiation equipment. This also reduces the emission of manganese compounds with oxygen into the atmosphere, which is very harmful to the environment and the human body.