Highly Wear-Resistant Alloy Steel Forgings

     The preparation of highly wear-resistant alloy steel forgings specifically includes the following steps:
(1) Vacuum smelting: Weigh pure iron, aluminum blocks, ferromanganese, ferrochromium, ferrotitanium, ferrosilicon, ferromolybdenum, vanadium particles, nickel plates, graphite electrode blocks, and ferroboron according to the designed ingredients, and obtain the metal after vacuum smelting To form an ingot, heat the demolded metal ingot to 850-950°C and keep it warm for 0.5-1 hour. After the heat preservation is completed, the metal ingot is forged into a cast ingot and then cooled to room temperature.
(2) Forging treatment: heat the ingot to 1000-1200°C at 50-100°C/h and keep it for 0.5-2h, then cool it down to 850-950°C at a speed of 5-10°C/s and keep it for 10-30 minutes. Forging, forging is divided into two passes of deformation, the time interval between the two passes is 0.5~1.5h, and the deformation rate is 0.5~1/s; after hot forging is completed, quenching treatment is performed, and the cooling rate is 5~10°C/s.
(3) Post-forging heat treatment: heat the lining plate to 600-700°C at a rate of 50-100°C/h and keep it warm for more than 1 hour, then heat it to 850-900°C at a rate of 40-60°C/h and keep it warm for more than 2 hours, and then Cool to 310-360°C at a rate of 5-10°C/s and keep it warm for more than 2 hours. After the heat preservation is completed, cool to room temperature.
Through the composition design, hot forging deformation and subsequent heat treatment process of high wear-resistant alloy steel forgings, a large number of dispersed multi-scale C particles and small Beima complex phase structures, large-sized micron particles are produced in the alloyed medium carbon steel structure. Class C particles can effectively resist the micro-cutting effect of abrasive particles. Small-sized sub-micron C particles and fine Beima structures can enhance the yield strength of the matrix, thereby improving the matrix's ability to resist deformation and strengthening the support for large-sized C particles. function, significantly improving the wear resistance of the material.