Wear bushing for a casting chamber for pressure casting metals is made from a silicon nitride ceramic or ferrous alloy containing alloying additions of chromium

摘要

Wear bushing is made from a silicon nitride ceramic or an alloy containing (in %) 0-15 cobalt, 1.2-13 chromium, 0-8 tungsten, 0.5-5.5 molybdenum, 0-3.6 vanadium, 0-2.7 niobium, 0-2.5 manganese, 0-2.2 silicon, 0-2 carbon and a balance of iron.