▎ 摘　　要

NOVELTY - Abrasion resistant aluminum alloy door frame comprises 0.31-0.36 wt.% tungsten, 0.04-0.08 wt.% iron, 0.42-0.46 wt.% carbon, 0.32-0.36 wt.% magnesium, 2.20-2.50 wt.% zinc, 0.05-0.15 wt.% chromium, 5.2-5.6 wt.% silicon, 1.20-1.26 wt.% nickel, 0.63-0.67 wt.% strontium, 0.05-0.09 wt.% cobalt, 0.06-0.12 wt.% zirconium, 0.74-0.78 wt.% boron, 0.09-0.13 wt.% molybdenum, 1.03-1.08 wt.% tin, 0.01-0.05 wt.% silicon nitride, 0.22-0.26 wt.% graphene, 0.50-1.50 wt.% rare earth element, and rest is aluminum and inevitable impurities. USE - Abrasion resistant aluminum alloy door frame. ADVANTAGE - The abrasion resistant aluminum alloy door frame has enhanced abrasion resistant and prolonged service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing an abrasion resistant aluminum alloy door frame, which involves: (A) adding pure aluminum ingot to boiler to melt at a temperature of 650-670 degrees C for 20-30 minutes, increasing furnace temperature to 720-740 degrees C, adding rare earth element, heating it for 5-10 minutes, adding tungsten, iron, magnesium, zinc, chromium, nickel, lanthanum, cobalt, zirconium, molybdenum and tin until mineral material is completely melted, placing it at 840-880 degrees C for 30-50 minutes, adding refining agent, heating it to 950-980 degrees C, adding carbon, silicon, silicon nitride and graphene, melting it, removing the refining agent on the surface of the aluminum liquid, and ultrasonically treating the aluminum alloy melt to remove the dross; (B) cooling the aluminum alloy melt to 550-570 degrees C, and then casting it under vacuum to obtain an aluminum alloy ingot; (C) placing aluminum alloy ingot at 460-500 degrees C for 2-5 hours, heating it to 520-550 degrees C for 10-15 hours to obtain a homogenized ingot; (D) pre-heating and placing extrusion die and the homogenized ingot on an extruder for extrusion molding, where preheating temperature of extruder is 450-470 degrees C for 2-3.5 hours, preheating temperature of ingot is 470-520 degrees C for 4-6 hours, cooling it under air to below 50 degrees C, and then stretching and straightening it to obtain an extruded piece; and (E) subjecting extruded piece to solution treatment and artificial aging treatment to obtain final product.