The invention discloses a method for preparing a composite
wear resistant abrasive disk with a protogenous columnar hard phase. The
wear resistant abrasive disk prepared by the method is formed by pouring and compounding a high
hardness columnar
alloy hard phase and a high tenacity
base metal. The method comprises the following steps: weaving an
alloy powder core wire material into a framework similar to the shape of the
abrasive disk, and pouring smelted high temperature base material
molten steel into a die cavity of an abrasive disk
casting mould; putting the woven framework similar to the shape of the abrasive disk into the
casting die cavity filled with the high temperature
base metal molten steel quickly, performing cast-infiltration,
sintering or melting on the woven
alloy powder core wire material framework by using the heat of the high temperature
base metal molten steel so as to generate a highly-dispersed high
hardness columnar alloy hard phase in situ; and cooling the phase at
room temperature to produce the composite
wear resistant abrasive disk using high-tenacity and high-strength
metal as a base and containing the metallurgically-combined protogenous columnar hard phase. The composite wear resistant abrasive disk with the protogenous columnar hard phase has ultra
wear resistance and good
impact resistant
toughness, and the service life of the abrasive disk is close to or exceeds the imported products of the same type.