High-abrasion-resistance powder metallurgical spherical hinge for excavating machine and manufacture method of spherical hinge

The invention discloses a high-abrasion-resistance powder metallurgical spherical hinge for an excavating machine and a manufacture method of the spherical hinge. The manufacture method comprises the following steps of 1, uniform ingredient mixing, 2, warm-pressing one-step forming, 3, high-temperature sintering, 4, finishing, and 5, heat treatment. Through the material improvement and the step improvement, the goal of producing the spherical hinge by a powder metallurgy forming process is realized, and compared with mechanically processed parts, the spherical hinge produced by adopting the powder metallurgy forming process has the advantages that 55 percent of materials can be saved, and in addition, the abrasion resistance performance is improved by 20 percent.