▎ 摘　　要

NOVELTY - A planetary gear of the planetary reducer comprises 81-88 pts. wt. iron, 4-8 pts. wt. zinc, 2-8 pts. wt. aluminum, 2.4-3 pts. wt. silicon, 2.2-3 pts. wt. graphene, 0.2-0.5 pt. wt. copper, 0.5-1 pt. wt. magnesium, 0.1-0.5 pt. wt. vanadium, 0.005-0.007 pt. wt. tantalum, 0.002-0.005 pt. wt. molybdenum and 0.003-0.008 pt. wt. titanium. USE - Planetary gear of planetary reducer. ADVANTAGE - The planetary gear has high hardness, excellent abrasion resistance, prolonged service life, low heat expansion rate, and improves the accuracy and service life of the reducer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of planetary gear of the planetary reducer.