▎ 摘　　要

NOVELTY - Automobile brake drum material comprises 63-72 pts. wt. pig iron, 14-26 pts. wt. 25# scrap steel, 0.05-0.3 pt. wt. glass fiber, 6-11 pts. wt. foundry returns, 0.8-1.5 pts. wt. silicon carbide, 0.3-1 pt. wt. chromium, 0.4-0.8 pt. wt. manganese, 0.1-0.2 pt. wt. antimony, 0.01-0.1 pt. wt. titanium, 0.03-0.15 pt. wt. molybdenum, and 5-10 pts. wt. graphene. USE - Automobile brake drum material. ADVANTAGE - The material is friction-resistant, abrasion-resistant, fatigue-resistant, and has long useful life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of automobile brake drum material comprising taking raw materials, smelting at 1520-1630 degrees C, adding inoculant, inoculating for 6-10 minutes, melting at 1450-1480 degrees C, adding inoculant, vermicular agent and covering agent, heating at 550-600 degrees C for 20-45 minutes, and cooling.