The compact density does not meet the design requirements.

In the production of powder metallurgy parts, the higher the density of materials, the higher the physical and mechanical properties. In other words, the compact density and distribution of powder metallurgical parts will determine the performance of the final product. Therefore, in the process of debugging and pressing of powder metallurgy dies, the density of compacts must be tested. In density testing, attention should be paid to the different structure and requirements of the compacts to be treated differently.