▎ 摘　　要

NOVELTY - A powder metallurgy flange with high tensile strength and high air tightness, comprises 70-80 pts. wt. iron-based powder, 1-12 pts. wt. molybdenum powder, 2-8 pts. wt. vanadium powder, 5-9 pts. wt. glutinous rice powder, 5-10 pts. wt. zinc powder, 1-3 pts. wt. bismuth diboride, 2-5 pts. wt. ferroferric oxide, 3-5 pts. wt. graphene, and 2-5 pts. wt. additive. USE - Powder metallurgy flange. ADVANTAGE - The produced flange has a uniform tensile strength, a gas tightness and a uniform structure, and can widely adapt to various environments.