LINING Russian patent published in 1995 - IPC

FIELD: grinding and disintegrating materials. SUBSTANCE: lining comprises plastic base 1 made of a steel, e.g. carbon steel, in which inserts 2 made of, e.g. high-chromium iron are imbedded, the insert being reinforced with rods 3 made of a plastic material and projected in the body of base 1. Inserts 3 are usually trapezoidal. The rock moves over the working surface of the lining whose plastic base is protected by wear- resisting inserts. Under the shock load the insert are cracked but their integrity and connection with the base is conserved owing to the rods. EFFECT: enhanced reliability. 2 cl, 3 dwg