A process for the production of a high-density powder metallurgical iron-based alloy

Abstract

The application relates to a preparation process of a high-density powder metallurgy iron-based alloy, and relates to the technical field of metallurgical materials, in particular to a high-density powder metallurgy iron-based alloy preparation process. The preparation process comprises the following steps: taking copper (2%), nickel (2%), molybdenum (1%), graphite (0.3%) and the rest of iron according to the mass percentage, and making the above raw materials into 800-mesh powders; uniformly mixing the powders; pressing the mixed powders into blanks; sintering the blanks at 1100-1250 DEG C under a protective atmosphere or vacuum condition for 30-120 minutes; and obtaining the iron-based alloy product through shaping. The iron-based alloy material prepared by optimizing the powder granularity (800-1000 mesh), the pressing mode and the sintering is obviously superior to traditional powder metallurgy iron-based materials. The iron-based alloy product has the comprehensive advantages of high density, high strength, good size precision and stable performance, and has a wide industrial application prospect.