E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 3/40 (2006.01) B22D 25/00 (2006.01) B23P 19/00 (2006.01) B66C 3/02 (2006.01)
Patent
CA 2639121
Disclosed herein are a wear-resistant, impact-resistant excavator bucket manufactured by casting and a manufacturing method thereof. The excavator bucket is manufactured by: making a wooden or metallic casting pattern having the same shape as that of the bucket; inserting the casting pattern into a molding box and subjecting the inserted pattern to sand casting using molding sand so as to form a sprue; taking out the pattern from the molding box to form a mold cavity; heating an ingot, comprising a silicon (Si)-chromium (Cr)-manganese (Mn) alloy as a base, bromine (B) and the balance of Fe and unavoidable impurities, at a temperature of 1600-1650 °C, and pouring the heated ingot into the mold cavity; solidifying the poured ingot and separating the upper mold portion and the molding box from the solidified ingot, thus producing a sand-cast bucket; charging the sand-cast bucket into an electric furnace, heating the charged bucket at a temperature of 900-1100 °C, and quenching the heated bucket in cold water; subjecting the coupling part of the quenched bucket to boring, face milling, drilling and tapping, such that the bucket can be coupled to an excavator body; assembling parts, bushings, pins and bolts, to the coupling part; and washing, drying and painting the assembled bucket.
Kim Jong-Soo
Lee Kyu-Young
Hung Jin Industry Co. Ltd.
Na
LandOfFree
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