One kind dredge dredger teeth and preparation method reamer

The present invention provides a dredging dredger reamer teeth and a preparation method solves the reamer tooth wear and problems of the conventional dredging dredger poor impact resistance. The reamer teeth comprising the following weight percentages of the chemical composition of: C: 0.25-0.28%, Mn: 0.70-1.10%, Si: 1.30-1.60%, Cr: 1.50-1.70%, Nb: 0.07-0.12%, S≤ 0.040%, P≤0.070%, the balance is Fe. Above reamer tooth preparation methods include pouring reamer teeth and heat treatment process in two steps. The present invention is a reamer foot tensile strength of 1600-1730MPa, an elongation of 5-7%, V-notch impact toughness of 23-28J / cm2, hardness HRC50-52. The present invention reamer teeth stable mechanical properties, high strength, impact toughness, excellent wear resistance, long service life, can greatly reduce the replacement and repair times dredging operations reamer teeth, improve production efficiency, reducing Cost of production.